diff options
| author | Uneven Prankster <unevenprankster@protonmail.com> | 2023-10-15 21:28:29 -0300 |
|---|---|---|
| committer | Uneven Prankster <unevenprankster@protonmail.com> | 2023-10-15 21:28:29 -0300 |
| commit | 1c0cc775732201f4c4d3ee0d6772be786b3b4aa1 (patch) | |
| tree | f5d692d046868261275c7430a624c3ea9ed75d3d /raylib/rshapes.c | |
| parent | a89f892640cf12f75c7ce18e6e88c70a8d3965ed (diff) | |
A lot has certainly happened!
Diffstat (limited to 'raylib/rshapes.c')
| -rw-r--r-- | raylib/rshapes.c | 1973 |
1 files changed, 0 insertions, 1973 deletions
diff --git a/raylib/rshapes.c b/raylib/rshapes.c deleted file mode 100644 index 6987fe9..0000000 --- a/raylib/rshapes.c +++ /dev/null @@ -1,1973 +0,0 @@ -/********************************************************************************************** -* -* rshapes - Basic functions to draw 2d shapes and check collisions -* -* ADDITIONAL NOTES: -* Shapes can be draw using 3 types of primitives: LINES, TRIANGLES and QUADS. -* Some functions implement two drawing options: TRIANGLES and QUADS, by default TRIANGLES -* are used but QUADS implementation can be selected with SUPPORT_QUADS_DRAW_MODE define -* -* Some functions define texture coordinates (rlTexCoord2f()) for the shapes and use a -* user-provided texture with SetShapesTexture(), the pourpouse of this implementation -* is allowing to reduce draw calls when combined with a texture-atlas. -* -* By default, raylib sets the default texture and rectangle at InitWindow()[rcore] to one -* white character of default font [rtext], this way, raylib text and shapes can be draw with -* a single draw call and it also allows users to configure it the same way with their own fonts. -* -* CONFIGURATION: -* #define SUPPORT_MODULE_RSHAPES -* rshapes module is included in the build -* -* #define SUPPORT_QUADS_DRAW_MODE -* Use QUADS instead of TRIANGLES for drawing when possible. Lines-based shapes still use LINES -* -* -* LICENSE: zlib/libpng -* -* Copyright (c) 2013-2023 Ramon Santamaria (@raysan5) -* -* This software is provided "as-is", without any express or implied warranty. In no event -* will the authors be held liable for any damages arising from the use of this software. -* -* Permission is granted to anyone to use this software for any purpose, including commercial -* applications, and to alter it and redistribute it freely, subject to the following restrictions: -* -* 1. The origin of this software must not be misrepresented; you must not claim that you -* wrote the original software. If you use this software in a product, an acknowledgment -* in the product documentation would be appreciated but is not required. -* -* 2. Altered source versions must be plainly marked as such, and must not be misrepresented -* as being the original software. -* -* 3. This notice may not be removed or altered from any source distribution. -* -**********************************************************************************************/ - -#include "raylib.h" // Declares module functions - -// Check if config flags have been externally provided on compilation line -#if !defined(EXTERNAL_CONFIG_FLAGS) - #include "config.h" // Defines module configuration flags -#endif - -#if defined(SUPPORT_MODULE_RSHAPES) - -#include "rlgl.h" // OpenGL abstraction layer to OpenGL 1.1, 2.1, 3.3+ or ES2 - -#include <math.h> // Required for: sinf(), asinf(), cosf(), acosf(), sqrtf(), fabsf() -#include <float.h> // Required for: FLT_EPSILON -#include <stdlib.h> // Required for: RL_FREE - -//---------------------------------------------------------------------------------- -// Defines and Macros -//---------------------------------------------------------------------------------- -// Error rate to calculate how many segments we need to draw a smooth circle, -// taken from https://stackoverflow.com/a/2244088 -#ifndef SMOOTH_CIRCLE_ERROR_RATE - #define SMOOTH_CIRCLE_ERROR_RATE 0.5f // Circle error rate -#endif -#ifndef SPLINE_LINE_DIVISIONS - #define SPLINE_LINE_DIVISIONS 24 // Spline lines segment divisions -#endif - - -//---------------------------------------------------------------------------------- -// Types and Structures Definition -//---------------------------------------------------------------------------------- -// Not here... - -//---------------------------------------------------------------------------------- -// Global Variables Definition -//---------------------------------------------------------------------------------- -Texture2D texShapes = { 1, 1, 1, 1, 7 }; // Texture used on shapes drawing (white pixel loaded by rlgl) -Rectangle texShapesRec = { 0.0f, 0.0f, 1.0f, 1.0f }; // Texture source rectangle used on shapes drawing - -//---------------------------------------------------------------------------------- -// Module specific Functions Declaration -//---------------------------------------------------------------------------------- -static float EaseCubicInOut(float t, float b, float c, float d); // Cubic easing - -//---------------------------------------------------------------------------------- -// Module Functions Definition -//---------------------------------------------------------------------------------- - -// Set texture and rectangle to be used on shapes drawing -// NOTE: It can be useful when using basic shapes and one single font, -// defining a font char white rectangle would allow drawing everything in a single draw call -void SetShapesTexture(Texture2D texture, Rectangle source) -{ - // Reset texture to default pixel if required - // WARNING: Shapes texture should be probably better validated, - // it can break the rendering of all shapes if misused - if ((texture.id == 0) || (source.width == 0) || (source.height == 0)) - { - texShapes = (Texture2D){ 1, 1, 1, 1, 7 }; - texShapesRec = (Rectangle){ 0.0f, 0.0f, 1.0f, 1.0f }; - } - else - { - texShapes = texture; - texShapesRec = source; - } -} - -// Draw a pixel -void DrawPixel(int posX, int posY, Color color) -{ - DrawPixelV((Vector2){ (float)posX, (float)posY }, color); -} - -// Draw a pixel (Vector version) -void DrawPixelV(Vector2 position, Color color) -{ -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - - rlNormal3f(0.0f, 0.0f, 1.0f); - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(position.x, position.y); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(position.x, position.y + 1); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(position.x + 1, position.y + 1); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(position.x + 1, position.y); - - rlEnd(); - - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(position.x, position.y); - rlVertex2f(position.x, position.y + 1); - rlVertex2f(position.x + 1, position.y); - - rlVertex2f(position.x + 1, position.y); - rlVertex2f(position.x, position.y + 1); - rlVertex2f(position.x + 1, position.y + 1); - - rlEnd(); -#endif -} - -// Draw a line -void DrawLine(int startPosX, int startPosY, int endPosX, int endPosY, Color color) -{ - rlBegin(RL_LINES); - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f((float)startPosX, (float)startPosY); - rlVertex2f((float)endPosX, (float)endPosY); - rlEnd(); -} - -// Draw a line (Vector version) -void DrawLineV(Vector2 startPos, Vector2 endPos, Color color) -{ - rlBegin(RL_LINES); - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(startPos.x, startPos.y); - rlVertex2f(endPos.x, endPos.y); - rlEnd(); -} - -// Draw a line defining thickness -void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color) -{ - Vector2 delta = { endPos.x - startPos.x, endPos.y - startPos.y }; - float length = sqrtf(delta.x*delta.x + delta.y*delta.y); - - if ((length > 0) && (thick > 0)) - { - float scale = thick/(2*length); - Vector2 radius = { -scale*delta.y, scale*delta.x }; - Vector2 strip[4] = { - { startPos.x - radius.x, startPos.y - radius.y }, - { startPos.x + radius.x, startPos.y + radius.y }, - { endPos.x - radius.x, endPos.y - radius.y }, - { endPos.x + radius.x, endPos.y + radius.y } - }; - - DrawTriangleStrip(strip, 4, color); - } -} - -// Draw line using cubic-bezier curves in-out -void DrawLineBezier(Vector2 startPos, Vector2 endPos, float thick, Color color) -{ - Vector2 previous = startPos; - Vector2 current = { 0 }; - - Vector2 points[2*SPLINE_LINE_DIVISIONS + 2] = { 0 }; - - for (int i = 1; i <= SPLINE_LINE_DIVISIONS; i++) - { - // Cubic easing in-out - // NOTE: Easing is calculated only for y position value - current.y = EaseCubicInOut((float)i, startPos.y, endPos.y - startPos.y, (float)SPLINE_LINE_DIVISIONS); - current.x = previous.x + (endPos.x - startPos.x)/(float)SPLINE_LINE_DIVISIONS; - - float dy = current.y-previous.y; - float dx = current.x-previous.x; - float size = 0.5f*thick/sqrtf(dx*dx+dy*dy); - - if (i==1) - { - points[0].x = previous.x+dy*size; - points[0].y = previous.y-dx*size; - points[1].x = previous.x-dy*size; - points[1].y = previous.y+dx*size; - } - - points[2*i+1].x = current.x-dy*size; - points[2*i+1].y = current.y+dx*size; - points[2*i].x = current.x+dy*size; - points[2*i].y = current.y-dx*size; - - previous = current; - } - - DrawTriangleStrip(points, 2*SPLINE_LINE_DIVISIONS+2, color); -} - -// Draw line using quadratic bezier curves with a control point -void DrawLineBezierQuad(Vector2 startPos, Vector2 endPos, Vector2 controlPos, float thick, Color color) -{ - const float step = 1.0f/SPLINE_LINE_DIVISIONS; - - Vector2 previous = startPos; - Vector2 current = { 0 }; - float t = 0.0f; - - Vector2 points[2*SPLINE_LINE_DIVISIONS + 2] = { 0 }; - - for (int i = 1; i <= SPLINE_LINE_DIVISIONS; i++) - { - t = step*i; - float a = powf(1 - t, 2); - float b = 2*(1 - t)*t; - float c = powf(t, 2); - - // NOTE: The easing functions aren't suitable here because they don't take a control point - current.y = a*startPos.y + b*controlPos.y + c*endPos.y; - current.x = a*startPos.x + b*controlPos.x + c*endPos.x; - - float dy = current.y-previous.y; - float dx = current.x-previous.x; - float size = 0.5f*thick/sqrtf(dx*dx+dy*dy); - - if (i==1) - { - points[0].x = previous.x+dy*size; - points[0].y = previous.y-dx*size; - points[1].x = previous.x-dy*size; - points[1].y = previous.y+dx*size; - } - - points[2*i+1].x = current.x-dy*size; - points[2*i+1].y = current.y+dx*size; - points[2*i].x = current.x+dy*size; - points[2*i].y = current.y-dx*size; - - previous = current; - } - - DrawTriangleStrip(points, 2*SPLINE_LINE_DIVISIONS+2, color); -} - -// Draw line using cubic bezier curves with 2 control points -void DrawLineBezierCubic(Vector2 startPos, Vector2 endPos, Vector2 startControlPos, Vector2 endControlPos, float thick, Color color) -{ - const float step = 1.0f/SPLINE_LINE_DIVISIONS; - - Vector2 previous = startPos; - Vector2 current = { 0 }; - float t = 0.0f; - - Vector2 points[2*SPLINE_LINE_DIVISIONS + 2] = { 0 }; - - for (int i = 1; i <= SPLINE_LINE_DIVISIONS; i++) - { - t = step*i; - float a = powf(1 - t, 3); - float b = 3*powf(1 - t, 2)*t; - float c = 3*(1 - t)*powf(t, 2); - float d = powf(t, 3); - - current.y = a*startPos.y + b*startControlPos.y + c*endControlPos.y + d*endPos.y; - current.x = a*startPos.x + b*startControlPos.x + c*endControlPos.x + d*endPos.x; - - float dy = current.y - previous.y; - float dx = current.x - previous.x; - float size = 0.5f*thick/sqrtf(dx*dx+dy*dy); - - if (i == 1) - { - points[0].x = previous.x + dy*size; - points[0].y = previous.y - dx*size; - points[1].x = previous.x - dy*size; - points[1].y = previous.y + dx*size; - } - - points[2*i + 1].x = current.x - dy*size; - points[2*i + 1].y = current.y + dx*size; - points[2*i].x = current.x + dy*size; - points[2*i].y = current.y - dx*size; - - previous = current; - } - - DrawTriangleStrip(points, 2*SPLINE_LINE_DIVISIONS + 2, color); -} - -// Draw a B-Spline line, minimum 4 points -void DrawLineBSpline(Vector2 *points, int pointCount, float thick, Color color) -{ - if (pointCount < 4) return; - - float a[4] = { 0 }; - float b[4] = { 0 }; - float dy = 0.0f; - float dx = 0.0f; - float size = 0.0f; - - Vector2 currentPoint = { 0 }; - Vector2 nextPoint = { 0 }; - Vector2 vertices[2*SPLINE_LINE_DIVISIONS + 2] = { 0 }; - - for (int i = 0; i < (pointCount - 3); i++) - { - Vector2 p1 = points[i], p2 = points[i + 1], p3 = points[i + 2], p4 = points[i + 3]; - - a[0] = (-p1.x + 3*p2.x - 3*p3.x + p4.x)/6.0f; - a[1] = (3*p1.x - 6*p2.x + 3*p3.x)/6.0f; - a[2] = (-3*p1.x + 3*p3.x)/6.0f; - a[3] = (p1.x + 4*p2.x + p3.x)/6.0f; - - b[0] = (-p1.y + 3*p2.y - 3*p3.y + p4.y)/6.0f; - b[1] = (3*p1.y - 6*p2.y + 3*p3.y)/6.0f; - b[2] = (-3*p1.y + 3*p3.y)/6.0f; - b[3] = (p1.y + 4*p2.y + p3.y)/6.0f; - - currentPoint.x = a[3]; - currentPoint.y = b[3]; - - if (i == 0) DrawCircleV(currentPoint, thick/2.0f, color); - - float t = 0.0f; - - if (i > 0) - { - vertices[0].x = currentPoint.x + dy*size; - vertices[0].y = currentPoint.y - dx*size; - vertices[1].x = currentPoint.x - dy*size; - vertices[1].y = currentPoint.y + dx*size; - } - - for (int j = 1; j <= SPLINE_LINE_DIVISIONS; j++) - { - t = ((float)j)/((float)SPLINE_LINE_DIVISIONS); - - nextPoint.x = a[3] + t*(a[2] + t*(a[1] + t*a[0])); - nextPoint.y = b[3] + t*(b[2] + t*(b[1] + t*b[0])); - - dy = nextPoint.y - currentPoint.y; - dx = nextPoint.x - currentPoint.x; - size = 0.5f*thick/sqrtf(dx*dx+dy*dy); - - if ((j == 1) && (i == 0)) - { - vertices[0].x = currentPoint.x + dy*size; - vertices[0].y = currentPoint.y - dx*size; - vertices[1].x = currentPoint.x - dy*size; - vertices[1].y = currentPoint.y + dx*size; - } - - vertices[2*j + 1].x = nextPoint.x - dy*size; - vertices[2*j + 1].y = nextPoint.y + dx*size; - vertices[2*j].x = nextPoint.x + dy*size; - vertices[2*j].y = nextPoint.y - dx*size; - - currentPoint = nextPoint; - } - - DrawTriangleStrip(vertices, 2*SPLINE_LINE_DIVISIONS+2, color); - } - - DrawCircleV(currentPoint, thick/2.0f, color); -} - -// Draw a Catmull Rom spline line, minimum 4 points -void DrawLineCatmullRom(Vector2 *points, int pointCount, float thick, Color color) -{ - if (pointCount < 4) return; - - float dy = 0.0f; - float dx = 0.0f; - float size = 0.0f; - - Vector2 currentPoint = points[1]; - Vector2 nextPoint = { 0 }; - Vector2 vertices[2*SPLINE_LINE_DIVISIONS + 2] = { 0 }; - - DrawCircleV(currentPoint, thick/2.0f, color); - - for (int i = 0; i < (pointCount - 3); i++) - { - Vector2 p1 = points[i], p2 = points[i + 1], p3 = points[i + 2], p4 = points[i + 3]; - - float t = 0.0f; - currentPoint = points[i]; - - if (i > 0) - { - vertices[0].x = currentPoint.x + dy*size; - vertices[0].y = currentPoint.y - dx*size; - vertices[1].x = currentPoint.x - dy*size; - vertices[1].y = currentPoint.y + dx*size; - } - - for (int i = 0; i <= SPLINE_LINE_DIVISIONS; i++) - { - t = ((float)i)/((float)SPLINE_LINE_DIVISIONS); - - float q0 = (-1*t*t*t) + (2*t*t) + (-1*t); - float q1 = (3*t*t*t) + (-5*t*t) + 2; - float q2 = (-3*t*t*t) + (4*t*t) + t; - float q3 = t*t*t - t*t; - - nextPoint.x = 0.5f*((p1.x*q0) + (p2.x*q1) + (p3.x*q2) + (p4.x*q3)); - nextPoint.y = 0.5f*((p1.y*q0) + (p2.y*q1) + (p3.y*q2) + (p4.y*q3)); - - float dy = nextPoint.y - currentPoint.y; - float dx = nextPoint.x - currentPoint.x; - float size = (0.5f*thick)/sqrtf(dx*dx + dy*dy); - - if (i == 1) - { - vertices[0].x = currentPoint.x + dy*size; - vertices[0].y = currentPoint.y - dx*size; - vertices[1].x = currentPoint.x - dy*size; - vertices[1].y = currentPoint.y + dx*size; - } - - vertices[2*i + 1].x = nextPoint.x - dy*size; - vertices[2*i + 1].y = nextPoint.y + dx*size; - vertices[2*i].x = nextPoint.x + dy*size; - vertices[2*i].y = nextPoint.y - dx*size; - - currentPoint = nextPoint; - } - - DrawTriangleStrip(vertices, 2*SPLINE_LINE_DIVISIONS+2, color); - - // TODO: REVIEW: HACK: Drawing a circle at points intersection to hide broken strip - DrawCircleV(currentPoint, thick/2.0f, color); - } -} - -// Draw lines sequence -void DrawLineStrip(Vector2 *points, int pointCount, Color color) -{ - if (pointCount >= 2) - { - rlBegin(RL_LINES); - rlColor4ub(color.r, color.g, color.b, color.a); - - for (int i = 0; i < pointCount - 1; i++) - { - rlVertex2f(points[i].x, points[i].y); - rlVertex2f(points[i + 1].x, points[i + 1].y); - } - rlEnd(); - } -} - -// Draw a color-filled circle -void DrawCircle(int centerX, int centerY, float radius, Color color) -{ - DrawCircleV((Vector2){ (float)centerX, (float)centerY }, radius, color); -} - -// Draw a piece of a circle -void DrawCircleSector(Vector2 center, float radius, float startAngle, float endAngle, int segments, Color color) -{ - if (radius <= 0.0f) radius = 0.1f; // Avoid div by zero - - // Function expects (endAngle > startAngle) - if (endAngle < startAngle) - { - // Swap values - float tmp = startAngle; - startAngle = endAngle; - endAngle = tmp; - } - - int minSegments = (int)ceilf((endAngle - startAngle)/90); - - if (segments < minSegments) - { - // Calculate the maximum angle between segments based on the error rate (usually 0.5f) - float th = acosf(2*powf(1 - SMOOTH_CIRCLE_ERROR_RATE/radius, 2) - 1); - segments = (int)((endAngle - startAngle)*ceilf(2*PI/th)/360); - - if (segments <= 0) segments = minSegments; - } - - float stepLength = (endAngle - startAngle)/(float)segments; - float angle = startAngle; - -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - // NOTE: Every QUAD actually represents two segments - for (int i = 0; i < segments/2; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength*2))*radius, center.y + sinf(DEG2RAD*(angle + stepLength*2))*radius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - - angle += (stepLength*2); - } - - // NOTE: In case number of segments is odd, we add one last piece to the cake - if (segments%2) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - } - rlEnd(); - - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x, center.y); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - - angle += stepLength; - } - rlEnd(); -#endif -} - -// Draw a piece of a circle outlines -void DrawCircleSectorLines(Vector2 center, float radius, float startAngle, float endAngle, int segments, Color color) -{ - if (radius <= 0.0f) radius = 0.1f; // Avoid div by zero issue - - // Function expects (endAngle > startAngle) - if (endAngle < startAngle) - { - // Swap values - float tmp = startAngle; - startAngle = endAngle; - endAngle = tmp; - } - - int minSegments = (int)ceilf((endAngle - startAngle)/90); - - if (segments < minSegments) - { - // Calculate the maximum angle between segments based on the error rate (usually 0.5f) - float th = acosf(2*powf(1 - SMOOTH_CIRCLE_ERROR_RATE/radius, 2) - 1); - segments = (int)((endAngle - startAngle)*ceilf(2*PI/th)/360); - - if (segments <= 0) segments = minSegments; - } - - float stepLength = (endAngle - startAngle)/(float)segments; - float angle = startAngle; - bool showCapLines = true; - - rlBegin(RL_LINES); - if (showCapLines) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(center.x, center.y); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - } - - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - - angle += stepLength; - } - - if (showCapLines) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(center.x, center.y); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - } - rlEnd(); -} - -// Draw a gradient-filled circle -// NOTE: Gradient goes from center (color1) to border (color2) -void DrawCircleGradient(int centerX, int centerY, float radius, Color color1, Color color2) -{ - rlBegin(RL_TRIANGLES); - for (int i = 0; i < 360; i += 10) - { - rlColor4ub(color1.r, color1.g, color1.b, color1.a); - rlVertex2f((float)centerX, (float)centerY); - rlColor4ub(color2.r, color2.g, color2.b, color2.a); - rlVertex2f((float)centerX + cosf(DEG2RAD*(i + 10))*radius, (float)centerY + sinf(DEG2RAD*(i + 10))*radius); - rlColor4ub(color2.r, color2.g, color2.b, color2.a); - rlVertex2f((float)centerX + cosf(DEG2RAD*i)*radius, (float)centerY + sinf(DEG2RAD*i)*radius); - } - rlEnd(); -} - -// Draw a color-filled circle (Vector version) -// NOTE: On OpenGL 3.3 and ES2 we use QUADS to avoid drawing order issues -void DrawCircleV(Vector2 center, float radius, Color color) -{ - DrawCircleSector(center, radius, 0, 360, 36, color); -} - -// Draw circle outline -void DrawCircleLines(int centerX, int centerY, float radius, Color color) -{ - rlBegin(RL_LINES); - rlColor4ub(color.r, color.g, color.b, color.a); - - // NOTE: Circle outline is drawn pixel by pixel every degree (0 to 360) - for (int i = 0; i < 360; i += 10) - { - rlVertex2f(centerX + cosf(DEG2RAD*i)*radius, centerY + sinf(DEG2RAD*i)*radius); - rlVertex2f(centerX + cosf(DEG2RAD*(i + 10))*radius, centerY + sinf(DEG2RAD*(i + 10))*radius); - } - rlEnd(); -} - -// Draw ellipse -void DrawEllipse(int centerX, int centerY, float radiusH, float radiusV, Color color) -{ - rlBegin(RL_TRIANGLES); - for (int i = 0; i < 360; i += 10) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f((float)centerX, (float)centerY); - rlVertex2f((float)centerX + cosf(DEG2RAD*(i + 10))*radiusH, (float)centerY + sinf(DEG2RAD*(i + 10))*radiusV); - rlVertex2f((float)centerX + cosf(DEG2RAD*i)*radiusH, (float)centerY + sinf(DEG2RAD*i)*radiusV); - } - rlEnd(); -} - -// Draw ellipse outline -void DrawEllipseLines(int centerX, int centerY, float radiusH, float radiusV, Color color) -{ - rlBegin(RL_LINES); - for (int i = 0; i < 360; i += 10) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(centerX + cosf(DEG2RAD*(i + 10))*radiusH, centerY + sinf(DEG2RAD*(i + 10))*radiusV); - rlVertex2f(centerX + cosf(DEG2RAD*i)*radiusH, centerY + sinf(DEG2RAD*i)*radiusV); - } - rlEnd(); -} - -// Draw ring -void DrawRing(Vector2 center, float innerRadius, float outerRadius, float startAngle, float endAngle, int segments, Color color) -{ - if (startAngle == endAngle) return; - - // Function expects (outerRadius > innerRadius) - if (outerRadius < innerRadius) - { - float tmp = outerRadius; - outerRadius = innerRadius; - innerRadius = tmp; - - if (outerRadius <= 0.0f) outerRadius = 0.1f; - } - - // Function expects (endAngle > startAngle) - if (endAngle < startAngle) - { - // Swap values - float tmp = startAngle; - startAngle = endAngle; - endAngle = tmp; - } - - int minSegments = (int)ceilf((endAngle - startAngle)/90); - - if (segments < minSegments) - { - // Calculate the maximum angle between segments based on the error rate (usually 0.5f) - float th = acosf(2*powf(1 - SMOOTH_CIRCLE_ERROR_RATE/outerRadius, 2) - 1); - segments = (int)((endAngle - startAngle)*ceilf(2*PI/th)/360); - - if (segments <= 0) segments = minSegments; - } - - // Not a ring - if (innerRadius <= 0.0f) - { - DrawCircleSector(center, outerRadius, startAngle, endAngle, segments, color); - return; - } - - float stepLength = (endAngle - startAngle)/(float)segments; - float angle = startAngle; - -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius); - - angle += stepLength; - } - rlEnd(); - - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - - angle += stepLength; - } - rlEnd(); -#endif -} - -// Draw ring outline -void DrawRingLines(Vector2 center, float innerRadius, float outerRadius, float startAngle, float endAngle, int segments, Color color) -{ - if (startAngle == endAngle) return; - - // Function expects (outerRadius > innerRadius) - if (outerRadius < innerRadius) - { - float tmp = outerRadius; - outerRadius = innerRadius; - innerRadius = tmp; - - if (outerRadius <= 0.0f) outerRadius = 0.1f; - } - - // Function expects (endAngle > startAngle) - if (endAngle < startAngle) - { - // Swap values - float tmp = startAngle; - startAngle = endAngle; - endAngle = tmp; - } - - int minSegments = (int)ceilf((endAngle - startAngle)/90); - - if (segments < minSegments) - { - // Calculate the maximum angle between segments based on the error rate (usually 0.5f) - float th = acosf(2*powf(1 - SMOOTH_CIRCLE_ERROR_RATE/outerRadius, 2) - 1); - segments = (int)((endAngle - startAngle)*ceilf(2*PI/th)/360); - - if (segments <= 0) segments = minSegments; - } - - if (innerRadius <= 0.0f) - { - DrawCircleSectorLines(center, outerRadius, startAngle, endAngle, segments, color); - return; - } - - float stepLength = (endAngle - startAngle)/(float)segments; - float angle = startAngle; - bool showCapLines = true; - - rlBegin(RL_LINES); - if (showCapLines) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - } - - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius); - - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - - angle += stepLength; - } - - if (showCapLines) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - } - rlEnd(); -} - -// Draw a color-filled rectangle -void DrawRectangle(int posX, int posY, int width, int height, Color color) -{ - DrawRectangleV((Vector2){ (float)posX, (float)posY }, (Vector2){ (float)width, (float)height }, color); -} - -// Draw a color-filled rectangle (Vector version) -// NOTE: On OpenGL 3.3 and ES2 we use QUADS to avoid drawing order issues -void DrawRectangleV(Vector2 position, Vector2 size, Color color) -{ - DrawRectanglePro((Rectangle){ position.x, position.y, size.x, size.y }, (Vector2){ 0.0f, 0.0f }, 0.0f, color); -} - -// Draw a color-filled rectangle -void DrawRectangleRec(Rectangle rec, Color color) -{ - DrawRectanglePro(rec, (Vector2){ 0.0f, 0.0f }, 0.0f, color); -} - -// Draw a color-filled rectangle with pro parameters -void DrawRectanglePro(Rectangle rec, Vector2 origin, float rotation, Color color) -{ - Vector2 topLeft = { 0 }; - Vector2 topRight = { 0 }; - Vector2 bottomLeft = { 0 }; - Vector2 bottomRight = { 0 }; - - // Only calculate rotation if needed - if (rotation == 0.0f) - { - float x = rec.x - origin.x; - float y = rec.y - origin.y; - topLeft = (Vector2){ x, y }; - topRight = (Vector2){ x + rec.width, y }; - bottomLeft = (Vector2){ x, y + rec.height }; - bottomRight = (Vector2){ x + rec.width, y + rec.height }; - } - else - { - float sinRotation = sinf(rotation*DEG2RAD); - float cosRotation = cosf(rotation*DEG2RAD); - float x = rec.x; - float y = rec.y; - float dx = -origin.x; - float dy = -origin.y; - - topLeft.x = x + dx*cosRotation - dy*sinRotation; - topLeft.y = y + dx*sinRotation + dy*cosRotation; - - topRight.x = x + (dx + rec.width)*cosRotation - dy*sinRotation; - topRight.y = y + (dx + rec.width)*sinRotation + dy*cosRotation; - - bottomLeft.x = x + dx*cosRotation - (dy + rec.height)*sinRotation; - bottomLeft.y = y + dx*sinRotation + (dy + rec.height)*cosRotation; - - bottomRight.x = x + (dx + rec.width)*cosRotation - (dy + rec.height)*sinRotation; - bottomRight.y = y + (dx + rec.width)*sinRotation + (dy + rec.height)*cosRotation; - } - -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - - rlNormal3f(0.0f, 0.0f, 1.0f); - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(topLeft.x, topLeft.y); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(bottomLeft.x, bottomLeft.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(bottomRight.x, bottomRight.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(topRight.x, topRight.y); - - rlEnd(); - - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(topLeft.x, topLeft.y); - rlVertex2f(bottomLeft.x, bottomLeft.y); - rlVertex2f(topRight.x, topRight.y); - - rlVertex2f(topRight.x, topRight.y); - rlVertex2f(bottomLeft.x, bottomLeft.y); - rlVertex2f(bottomRight.x, bottomRight.y); - - rlEnd(); -#endif -} - -// Draw a vertical-gradient-filled rectangle -// NOTE: Gradient goes from bottom (color1) to top (color2) -void DrawRectangleGradientV(int posX, int posY, int width, int height, Color color1, Color color2) -{ - DrawRectangleGradientEx((Rectangle){ (float)posX, (float)posY, (float)width, (float)height }, color1, color2, color2, color1); -} - -// Draw a horizontal-gradient-filled rectangle -// NOTE: Gradient goes from bottom (color1) to top (color2) -void DrawRectangleGradientH(int posX, int posY, int width, int height, Color color1, Color color2) -{ - DrawRectangleGradientEx((Rectangle){ (float)posX, (float)posY, (float)width, (float)height }, color1, color1, color2, color2); -} - -// Draw a gradient-filled rectangle -// NOTE: Colors refer to corners, starting at top-lef corner and counter-clockwise -void DrawRectangleGradientEx(Rectangle rec, Color col1, Color col2, Color col3, Color col4) -{ - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - rlNormal3f(0.0f, 0.0f, 1.0f); - - // NOTE: Default raylib font character 95 is a white square - rlColor4ub(col1.r, col1.g, col1.b, col1.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(rec.x, rec.y); - - rlColor4ub(col2.r, col2.g, col2.b, col2.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(rec.x, rec.y + rec.height); - - rlColor4ub(col3.r, col3.g, col3.b, col3.a); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(rec.x + rec.width, rec.y + rec.height); - - rlColor4ub(col4.r, col4.g, col4.b, col4.a); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(rec.x + rec.width, rec.y); - rlEnd(); - - rlSetTexture(0); -} - -// Draw rectangle outline -// NOTE: On OpenGL 3.3 and ES2 we use QUADS to avoid drawing order issues -void DrawRectangleLines(int posX, int posY, int width, int height, Color color) -{ -#if defined(SUPPORT_QUADS_DRAW_MODE) - DrawRectangle(posX, posY, width, 1, color); - DrawRectangle(posX + width - 1, posY + 1, 1, height - 2, color); - DrawRectangle(posX, posY + height - 1, width, 1, color); - DrawRectangle(posX, posY + 1, 1, height - 2, color); -#else - rlBegin(RL_LINES); - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(posX + 1, posY + 1); - rlVertex2f(posX + width, posY + 1); - - rlVertex2f(posX + width, posY + 1); - rlVertex2f(posX + width, posY + height); - - rlVertex2f(posX + width, posY + height); - rlVertex2f(posX + 1, posY + height); - - rlVertex2f(posX + 1, posY + height); - rlVertex2f(posX + 1, posY + 1); - rlEnd(); -#endif -} - -// Draw rectangle outline with extended parameters -void DrawRectangleLinesEx(Rectangle rec, float lineThick, Color color) -{ - if ((lineThick > rec.width) || (lineThick > rec.height)) - { - if (rec.width > rec.height) lineThick = rec.height/2; - else if (rec.width < rec.height) lineThick = rec.width/2; - } - - // When rec = { x, y, 8.0f, 6.0f } and lineThick = 2, the following - // four rectangles are drawn ([T]op, [B]ottom, [L]eft, [R]ight): - // - // TTTTTTTT - // TTTTTTTT - // LL RR - // LL RR - // BBBBBBBB - // BBBBBBBB - // - - Rectangle top = { rec.x, rec.y, rec.width, lineThick }; - Rectangle bottom = { rec.x, rec.y - lineThick + rec.height, rec.width, lineThick }; - Rectangle left = { rec.x, rec.y + lineThick, lineThick, rec.height - lineThick*2.0f }; - Rectangle right = { rec.x - lineThick + rec.width, rec.y + lineThick, lineThick, rec.height - lineThick*2.0f }; - - DrawRectangleRec(top, color); - DrawRectangleRec(bottom, color); - DrawRectangleRec(left, color); - DrawRectangleRec(right, color); -} - -// Draw rectangle with rounded edges -void DrawRectangleRounded(Rectangle rec, float roundness, int segments, Color color) -{ - // Not a rounded rectangle - if ((roundness <= 0.0f) || (rec.width < 1) || (rec.height < 1 )) - { - DrawRectangleRec(rec, color); - return; - } - - if (roundness >= 1.0f) roundness = 1.0f; - - // Calculate corner radius - float radius = (rec.width > rec.height)? (rec.height*roundness)/2 : (rec.width*roundness)/2; - if (radius <= 0.0f) return; - - // Calculate number of segments to use for the corners - if (segments < 4) - { - // Calculate the maximum angle between segments based on the error rate (usually 0.5f) - float th = acosf(2*powf(1 - SMOOTH_CIRCLE_ERROR_RATE/radius, 2) - 1); - segments = (int)(ceilf(2*PI/th)/4.0f); - if (segments <= 0) segments = 4; - } - - float stepLength = 90.0f/(float)segments; - - /* - Quick sketch to make sense of all of this, - there are 9 parts to draw, also mark the 12 points we'll use - - P0____________________P1 - /| |\ - /1| 2 |3\ - P7 /__|____________________|__\ P2 - | |P8 P9| | - | 8 | 9 | 4 | - | __|____________________|__ | - P6 \ |P11 P10| / P3 - \7| 6 |5/ - \|____________________|/ - P5 P4 - */ - // Coordinates of the 12 points that define the rounded rect - const Vector2 point[12] = { - {(float)rec.x + radius, rec.y}, {(float)(rec.x + rec.width) - radius, rec.y}, { rec.x + rec.width, (float)rec.y + radius }, // PO, P1, P2 - {rec.x + rec.width, (float)(rec.y + rec.height) - radius}, {(float)(rec.x + rec.width) - radius, rec.y + rec.height}, // P3, P4 - {(float)rec.x + radius, rec.y + rec.height}, { rec.x, (float)(rec.y + rec.height) - radius}, {rec.x, (float)rec.y + radius}, // P5, P6, P7 - {(float)rec.x + radius, (float)rec.y + radius}, {(float)(rec.x + rec.width) - radius, (float)rec.y + radius}, // P8, P9 - {(float)(rec.x + rec.width) - radius, (float)(rec.y + rec.height) - radius}, {(float)rec.x + radius, (float)(rec.y + rec.height) - radius} // P10, P11 - }; - - const Vector2 centers[4] = { point[8], point[9], point[10], point[11] }; - const float angles[4] = { 180.0f, 270.0f, 0.0f, 90.0f }; - -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - // Draw all the 4 corners: [1] Upper Left Corner, [3] Upper Right Corner, [5] Lower Right Corner, [7] Lower Left Corner - for (int k = 0; k < 4; ++k) // Hope the compiler is smart enough to unroll this loop - { - float angle = angles[k]; - const Vector2 center = centers[k]; - - // NOTE: Every QUAD actually represents two segments - for (int i = 0; i < segments/2; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength*2))*radius, center.y + sinf(DEG2RAD*(angle + stepLength*2))*radius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - - angle += (stepLength*2); - } - - // NOTE: In case number of segments is odd, we add one last piece to the cake - if (segments%2) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - } - } - - // [2] Upper Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[0].x, point[0].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[8].x, point[8].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[9].x, point[9].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[1].x, point[1].y); - - // [4] Right Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[2].x, point[2].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[9].x, point[9].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[10].x, point[10].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[3].x, point[3].y); - - // [6] Bottom Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[11].x, point[11].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[5].x, point[5].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[4].x, point[4].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[10].x, point[10].y); - - // [8] Left Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[7].x, point[7].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[6].x, point[6].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[11].x, point[11].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[8].x, point[8].y); - - // [9] Middle Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[8].x, point[8].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[11].x, point[11].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[10].x, point[10].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[9].x, point[9].y); - - rlEnd(); - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - - // Draw all of the 4 corners: [1] Upper Left Corner, [3] Upper Right Corner, [5] Lower Right Corner, [7] Lower Left Corner - for (int k = 0; k < 4; ++k) // Hope the compiler is smart enough to unroll this loop - { - float angle = angles[k]; - const Vector2 center = centers[k]; - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(center.x, center.y); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*radius, center.y + sinf(DEG2RAD*(angle + stepLength))*radius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*radius, center.y + sinf(DEG2RAD*angle)*radius); - angle += stepLength; - } - } - - // [2] Upper Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[0].x, point[0].y); - rlVertex2f(point[8].x, point[8].y); - rlVertex2f(point[9].x, point[9].y); - rlVertex2f(point[1].x, point[1].y); - rlVertex2f(point[0].x, point[0].y); - rlVertex2f(point[9].x, point[9].y); - - // [4] Right Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[9].x, point[9].y); - rlVertex2f(point[10].x, point[10].y); - rlVertex2f(point[3].x, point[3].y); - rlVertex2f(point[2].x, point[2].y); - rlVertex2f(point[9].x, point[9].y); - rlVertex2f(point[3].x, point[3].y); - - // [6] Bottom Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[11].x, point[11].y); - rlVertex2f(point[5].x, point[5].y); - rlVertex2f(point[4].x, point[4].y); - rlVertex2f(point[10].x, point[10].y); - rlVertex2f(point[11].x, point[11].y); - rlVertex2f(point[4].x, point[4].y); - - // [8] Left Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[7].x, point[7].y); - rlVertex2f(point[6].x, point[6].y); - rlVertex2f(point[11].x, point[11].y); - rlVertex2f(point[8].x, point[8].y); - rlVertex2f(point[7].x, point[7].y); - rlVertex2f(point[11].x, point[11].y); - - // [9] Middle Rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[8].x, point[8].y); - rlVertex2f(point[11].x, point[11].y); - rlVertex2f(point[10].x, point[10].y); - rlVertex2f(point[9].x, point[9].y); - rlVertex2f(point[8].x, point[8].y); - rlVertex2f(point[10].x, point[10].y); - rlEnd(); -#endif -} - -// Draw rectangle with rounded edges outline -void DrawRectangleRoundedLines(Rectangle rec, float roundness, int segments, float lineThick, Color color) -{ - if (lineThick < 0) lineThick = 0; - - // Not a rounded rectangle - if (roundness <= 0.0f) - { - DrawRectangleLinesEx((Rectangle){rec.x-lineThick, rec.y-lineThick, rec.width+2*lineThick, rec.height+2*lineThick}, lineThick, color); - return; - } - - if (roundness >= 1.0f) roundness = 1.0f; - - // Calculate corner radius - float radius = (rec.width > rec.height)? (rec.height*roundness)/2 : (rec.width*roundness)/2; - if (radius <= 0.0f) return; - - // Calculate number of segments to use for the corners - if (segments < 4) - { - // Calculate the maximum angle between segments based on the error rate (usually 0.5f) - float th = acosf(2*powf(1 - SMOOTH_CIRCLE_ERROR_RATE/radius, 2) - 1); - segments = (int)(ceilf(2*PI/th)/2.0f); - if (segments <= 0) segments = 4; - } - - float stepLength = 90.0f/(float)segments; - const float outerRadius = radius + lineThick, innerRadius = radius; - - /* - Quick sketch to make sense of all of this, - marks the 16 + 4(corner centers P16-19) points we'll use - - P0 ================== P1 - // P8 P9 \\ - // \\ - P7 // P15 P10 \\ P2 - || *P16 P17* || - || || - || P14 P11 || - P6 \\ *P19 P18* // P3 - \\ // - \\ P13 P12 // - P5 ================== P4 - */ - const Vector2 point[16] = { - {(float)rec.x + innerRadius, rec.y - lineThick}, {(float)(rec.x + rec.width) - innerRadius, rec.y - lineThick}, { rec.x + rec.width + lineThick, (float)rec.y + innerRadius }, // PO, P1, P2 - {rec.x + rec.width + lineThick, (float)(rec.y + rec.height) - innerRadius}, {(float)(rec.x + rec.width) - innerRadius, rec.y + rec.height + lineThick}, // P3, P4 - {(float)rec.x + innerRadius, rec.y + rec.height + lineThick}, { rec.x - lineThick, (float)(rec.y + rec.height) - innerRadius}, {rec.x - lineThick, (float)rec.y + innerRadius}, // P5, P6, P7 - {(float)rec.x + innerRadius, rec.y}, {(float)(rec.x + rec.width) - innerRadius, rec.y}, // P8, P9 - { rec.x + rec.width, (float)rec.y + innerRadius }, {rec.x + rec.width, (float)(rec.y + rec.height) - innerRadius}, // P10, P11 - {(float)(rec.x + rec.width) - innerRadius, rec.y + rec.height}, {(float)rec.x + innerRadius, rec.y + rec.height}, // P12, P13 - { rec.x, (float)(rec.y + rec.height) - innerRadius}, {rec.x, (float)rec.y + innerRadius} // P14, P15 - }; - - const Vector2 centers[4] = { - {(float)rec.x + innerRadius, (float)rec.y + innerRadius}, {(float)(rec.x + rec.width) - innerRadius, (float)rec.y + innerRadius}, // P16, P17 - {(float)(rec.x + rec.width) - innerRadius, (float)(rec.y + rec.height) - innerRadius}, {(float)rec.x + innerRadius, (float)(rec.y + rec.height) - innerRadius} // P18, P19 - }; - - const float angles[4] = { 180.0f, 270.0f, 0.0f, 90.0f }; - - if (lineThick > 1) - { -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - - // Draw all the 4 corners first: Upper Left Corner, Upper Right Corner, Lower Right Corner, Lower Left Corner - for (int k = 0; k < 4; ++k) // Hope the compiler is smart enough to unroll this loop - { - float angle = angles[k]; - const Vector2 center = centers[k]; - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - - angle += stepLength; - } - } - - // Upper rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[0].x, point[0].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[8].x, point[8].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[9].x, point[9].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[1].x, point[1].y); - - // Right rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[2].x, point[2].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[10].x, point[10].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[11].x, point[11].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[3].x, point[3].y); - - // Lower rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[13].x, point[13].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[5].x, point[5].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[4].x, point[4].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[12].x, point[12].y); - - // Left rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[15].x, point[15].y); - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[7].x, point[7].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(point[6].x, point[6].y); - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(point[14].x, point[14].y); - - rlEnd(); - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - - // Draw all of the 4 corners first: Upper Left Corner, Upper Right Corner, Lower Right Corner, Lower Left Corner - for (int k = 0; k < 4; ++k) // Hope the compiler is smart enough to unroll this loop - { - float angle = angles[k]; - const Vector2 center = centers[k]; - - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x + cosf(DEG2RAD*angle)*innerRadius, center.y + sinf(DEG2RAD*angle)*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*innerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*innerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - - angle += stepLength; - } - } - - // Upper rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[0].x, point[0].y); - rlVertex2f(point[8].x, point[8].y); - rlVertex2f(point[9].x, point[9].y); - rlVertex2f(point[1].x, point[1].y); - rlVertex2f(point[0].x, point[0].y); - rlVertex2f(point[9].x, point[9].y); - - // Right rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[10].x, point[10].y); - rlVertex2f(point[11].x, point[11].y); - rlVertex2f(point[3].x, point[3].y); - rlVertex2f(point[2].x, point[2].y); - rlVertex2f(point[10].x, point[10].y); - rlVertex2f(point[3].x, point[3].y); - - // Lower rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[13].x, point[13].y); - rlVertex2f(point[5].x, point[5].y); - rlVertex2f(point[4].x, point[4].y); - rlVertex2f(point[12].x, point[12].y); - rlVertex2f(point[13].x, point[13].y); - rlVertex2f(point[4].x, point[4].y); - - // Left rectangle - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[7].x, point[7].y); - rlVertex2f(point[6].x, point[6].y); - rlVertex2f(point[14].x, point[14].y); - rlVertex2f(point[15].x, point[15].y); - rlVertex2f(point[7].x, point[7].y); - rlVertex2f(point[14].x, point[14].y); - rlEnd(); -#endif - } - else - { - // Use LINES to draw the outline - rlBegin(RL_LINES); - - // Draw all the 4 corners first: Upper Left Corner, Upper Right Corner, Lower Right Corner, Lower Left Corner - for (int k = 0; k < 4; ++k) // Hope the compiler is smart enough to unroll this loop - { - float angle = angles[k]; - const Vector2 center = centers[k]; - - for (int i = 0; i < segments; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(center.x + cosf(DEG2RAD*angle)*outerRadius, center.y + sinf(DEG2RAD*angle)*outerRadius); - rlVertex2f(center.x + cosf(DEG2RAD*(angle + stepLength))*outerRadius, center.y + sinf(DEG2RAD*(angle + stepLength))*outerRadius); - angle += stepLength; - } - } - - // And now the remaining 4 lines - for (int i = 0; i < 8; i += 2) - { - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(point[i].x, point[i].y); - rlVertex2f(point[i + 1].x, point[i + 1].y); - } - - rlEnd(); - } -} - -// Draw a triangle -// NOTE: Vertex must be provided in counter-clockwise order -void DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, Color color) -{ -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - rlColor4ub(color.r, color.g, color.b, color.a); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(v1.x, v1.y); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(v2.x, v2.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(v2.x, v2.y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(v3.x, v3.y); - rlEnd(); - - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(v1.x, v1.y); - rlVertex2f(v2.x, v2.y); - rlVertex2f(v3.x, v3.y); - rlEnd(); -#endif -} - -// Draw a triangle using lines -// NOTE: Vertex must be provided in counter-clockwise order -void DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, Color color) -{ - rlBegin(RL_LINES); - rlColor4ub(color.r, color.g, color.b, color.a); - rlVertex2f(v1.x, v1.y); - rlVertex2f(v2.x, v2.y); - - rlVertex2f(v2.x, v2.y); - rlVertex2f(v3.x, v3.y); - - rlVertex2f(v3.x, v3.y); - rlVertex2f(v1.x, v1.y); - rlEnd(); -} - -// Draw a triangle fan defined by points -// NOTE: First vertex provided is the center, shared by all triangles -// By default, following vertex should be provided in counter-clockwise order -void DrawTriangleFan(Vector2 *points, int pointCount, Color color) -{ - if (pointCount >= 3) - { - rlSetTexture(texShapes.id); - rlBegin(RL_QUADS); - rlColor4ub(color.r, color.g, color.b, color.a); - - for (int i = 1; i < pointCount - 1; i++) - { - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(points[0].x, points[0].y); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(points[i].x, points[i].y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(points[i + 1].x, points[i + 1].y); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(points[i + 1].x, points[i + 1].y); - } - rlEnd(); - rlSetTexture(0); - } -} - -// Draw a triangle strip defined by points -// NOTE: Every new vertex connects with previous two -void DrawTriangleStrip(Vector2 *points, int pointCount, Color color) -{ - if (pointCount >= 3) - { - rlBegin(RL_TRIANGLES); - rlColor4ub(color.r, color.g, color.b, color.a); - - for (int i = 2; i < pointCount; i++) - { - if ((i%2) == 0) - { - rlVertex2f(points[i].x, points[i].y); - rlVertex2f(points[i - 2].x, points[i - 2].y); - rlVertex2f(points[i - 1].x, points[i - 1].y); - } - else - { - rlVertex2f(points[i].x, points[i].y); - rlVertex2f(points[i - 1].x, points[i - 1].y); - rlVertex2f(points[i - 2].x, points[i - 2].y); - } - } - rlEnd(); - } -} - -// Draw a regular polygon of n sides (Vector version) -void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color) -{ - if (sides < 3) sides = 3; - float centralAngle = rotation*DEG2RAD; - float angleStep = 360.0f/(float)sides*DEG2RAD; - -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - for (int i = 0; i < sides; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - float nextAngle = centralAngle + angleStep; - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x, center.y); - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(centralAngle)*radius, center.y + sinf(centralAngle)*radius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(nextAngle)*radius, center.y + sinf(nextAngle)*radius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(centralAngle)*radius, center.y + sinf(centralAngle)*radius); - - centralAngle = nextAngle; - } - rlEnd(); - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - for (int i = 0; i < sides; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x, center.y); - rlVertex2f(center.x + cosf(centralAngle + angleStep)*radius, center.y + sinf(centralAngle + angleStep)*radius); - rlVertex2f(center.x + cosf(centralAngle)*radius, center.y + sinf(centralAngle)*radius); - - centralAngle += angleStep; - } - rlEnd(); -#endif -} - -// Draw a polygon outline of n sides -void DrawPolyLines(Vector2 center, int sides, float radius, float rotation, Color color) -{ - if (sides < 3) sides = 3; - float centralAngle = rotation*DEG2RAD; - float angleStep = 360.0f/(float)sides*DEG2RAD; - - rlBegin(RL_LINES); - for (int i = 0; i < sides; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - - rlVertex2f(center.x + cosf(centralAngle)*radius, center.y + sinf(centralAngle)*radius); - rlVertex2f(center.x + cosf(centralAngle + angleStep)*radius, center.y + sinf(centralAngle + angleStep)*radius); - - centralAngle += angleStep; - } - rlEnd(); -} - -void DrawPolyLinesEx(Vector2 center, int sides, float radius, float rotation, float lineThick, Color color) -{ - if (sides < 3) sides = 3; - float centralAngle = rotation*DEG2RAD; - float exteriorAngle = 360.0f/(float)sides*DEG2RAD; - float innerRadius = radius - (lineThick*cosf(DEG2RAD*exteriorAngle/2.0f)); - -#if defined(SUPPORT_QUADS_DRAW_MODE) - rlSetTexture(texShapes.id); - - rlBegin(RL_QUADS); - for (int i = 0; i < sides; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - float nextAngle = centralAngle + exteriorAngle; - - rlTexCoord2f(texShapesRec.x/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(centralAngle)*radius, center.y + sinf(centralAngle)*radius); - - rlTexCoord2f(texShapesRec.x/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(centralAngle)*innerRadius, center.y + sinf(centralAngle)*innerRadius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, (texShapesRec.y + texShapesRec.height)/texShapes.height); - rlVertex2f(center.x + cosf(nextAngle)*innerRadius, center.y + sinf(nextAngle)*innerRadius); - - rlTexCoord2f((texShapesRec.x + texShapesRec.width)/texShapes.width, texShapesRec.y/texShapes.height); - rlVertex2f(center.x + cosf(nextAngle)*radius, center.y + sinf(nextAngle)*radius); - - centralAngle = nextAngle; - } - rlEnd(); - rlSetTexture(0); -#else - rlBegin(RL_TRIANGLES); - for (int i = 0; i < sides; i++) - { - rlColor4ub(color.r, color.g, color.b, color.a); - float nextAngle = centralAngle + exteriorAngle; - - rlVertex2f(center.x + cosf(nextAngle)*radius, center.y + sinf(nextAngle)*radius); - rlVertex2f(center.x + cosf(centralAngle)*radius, center.y + sinf(centralAngle)*radius); - rlVertex2f(center.x + cosf(centralAngle)*innerRadius, center.y + sinf(centralAngle)*innerRadius); - - rlVertex2f(center.x + cosf(centralAngle)*innerRadius, center.y + sinf(centralAngle)*innerRadius); - rlVertex2f(center.x + cosf(nextAngle)*innerRadius, center.y + sinf(nextAngle)*innerRadius); - rlVertex2f(center.x + cosf(nextAngle)*radius, center.y + sinf(nextAngle)*radius); - - centralAngle = nextAngle; - } - rlEnd(); -#endif -} - -//---------------------------------------------------------------------------------- -// Module Functions Definition - Collision Detection functions -//---------------------------------------------------------------------------------- - -// Check if point is inside rectangle -bool CheckCollisionPointRec(Vector2 point, Rectangle rec) -{ - bool collision = false; - - if ((point.x >= rec.x) && (point.x < (rec.x + rec.width)) && (point.y >= rec.y) && (point.y < (rec.y + rec.height))) collision = true; - - return collision; -} - -// Check if point is inside circle -bool CheckCollisionPointCircle(Vector2 point, Vector2 center, float radius) -{ - bool collision = false; - - collision = CheckCollisionCircles(point, 0, center, radius); - - return collision; -} - -// Check if point is inside a triangle defined by three points (p1, p2, p3) -bool CheckCollisionPointTriangle(Vector2 point, Vector2 p1, Vector2 p2, Vector2 p3) -{ - bool collision = false; - - float alpha = ((p2.y - p3.y)*(point.x - p3.x) + (p3.x - p2.x)*(point.y - p3.y)) / - ((p2.y - p3.y)*(p1.x - p3.x) + (p3.x - p2.x)*(p1.y - p3.y)); - - float beta = ((p3.y - p1.y)*(point.x - p3.x) + (p1.x - p3.x)*(point.y - p3.y)) / - ((p2.y - p3.y)*(p1.x - p3.x) + (p3.x - p2.x)*(p1.y - p3.y)); - - float gamma = 1.0f - alpha - beta; - - if ((alpha > 0) && (beta > 0) && (gamma > 0)) collision = true; - - return collision; -} - -// Check if point is within a polygon described by array of vertices -// NOTE: Based on http://jeffreythompson.org/collision-detection/poly-point.php -bool CheckCollisionPointPoly(Vector2 point, Vector2 *points, int pointCount) -{ - bool collision = false; - - if (pointCount > 2) - { - for (int i = 0; i < pointCount - 1; i++) - { - Vector2 vc = points[i]; - Vector2 vn = points[i + 1]; - - if ((((vc.y >= point.y) && (vn.y < point.y)) || ((vc.y < point.y) && (vn.y >= point.y))) && - (point.x < ((vn.x - vc.x)*(point.y - vc.y)/(vn.y - vc.y) + vc.x))) collision = !collision; - } - } - - return collision; -} - -// Check collision between two rectangles -bool CheckCollisionRecs(Rectangle rec1, Rectangle rec2) -{ - bool collision = false; - - if ((rec1.x < (rec2.x + rec2.width) && (rec1.x + rec1.width) > rec2.x) && - (rec1.y < (rec2.y + rec2.height) && (rec1.y + rec1.height) > rec2.y)) collision = true; - - return collision; -} - -// Check collision between two circles -bool CheckCollisionCircles(Vector2 center1, float radius1, Vector2 center2, float radius2) -{ - bool collision = false; - - float dx = center2.x - center1.x; // X distance between centers - float dy = center2.y - center1.y; // Y distance between centers - - float distance = sqrtf(dx*dx + dy*dy); // Distance between centers - - if (distance <= (radius1 + radius2)) collision = true; - - return collision; -} - -// Check collision between circle and rectangle -// NOTE: Reviewed version to take into account corner limit case -bool CheckCollisionCircleRec(Vector2 center, float radius, Rectangle rec) -{ - bool collision = false; - - int recCenterX = (int)(rec.x + rec.width/2.0f); - int recCenterY = (int)(rec.y + rec.height/2.0f); - - float dx = fabsf(center.x - (float)recCenterX); - float dy = fabsf(center.y - (float)recCenterY); - - if (dx > (rec.width/2.0f + radius)) { return false; } - if (dy > (rec.height/2.0f + radius)) { return false; } - - if (dx <= (rec.width/2.0f)) { return true; } - if (dy <= (rec.height/2.0f)) { return true; } - - float cornerDistanceSq = (dx - rec.width/2.0f)*(dx - rec.width/2.0f) + - (dy - rec.height/2.0f)*(dy - rec.height/2.0f); - - collision = (cornerDistanceSq <= (radius*radius)); - - return collision; -} - -// Check the collision between two lines defined by two points each, returns collision point by reference -bool CheckCollisionLines(Vector2 startPos1, Vector2 endPos1, Vector2 startPos2, Vector2 endPos2, Vector2 *collisionPoint) -{ - bool collision = false; - - float div = (endPos2.y - startPos2.y)*(endPos1.x - startPos1.x) - (endPos2.x - startPos2.x)*(endPos1.y - startPos1.y); - - if (fabsf(div) >= FLT_EPSILON) - { - collision = true; - - float xi = ((startPos2.x - endPos2.x)*(startPos1.x*endPos1.y - startPos1.y*endPos1.x) - (startPos1.x - endPos1.x)*(startPos2.x*endPos2.y - startPos2.y*endPos2.x))/div; - float yi = ((startPos2.y - endPos2.y)*(startPos1.x*endPos1.y - startPos1.y*endPos1.x) - (startPos1.y - endPos1.y)*(startPos2.x*endPos2.y - startPos2.y*endPos2.x))/div; - - if (((fabsf(startPos1.x - endPos1.x) > FLT_EPSILON) && (xi < fminf(startPos1.x, endPos1.x) || (xi > fmaxf(startPos1.x, endPos1.x)))) || - ((fabsf(startPos2.x - endPos2.x) > FLT_EPSILON) && (xi < fminf(startPos2.x, endPos2.x) || (xi > fmaxf(startPos2.x, endPos2.x)))) || - ((fabsf(startPos1.y - endPos1.y) > FLT_EPSILON) && (yi < fminf(startPos1.y, endPos1.y) || (yi > fmaxf(startPos1.y, endPos1.y)))) || - ((fabsf(startPos2.y - endPos2.y) > FLT_EPSILON) && (yi < fminf(startPos2.y, endPos2.y) || (yi > fmaxf(startPos2.y, endPos2.y))))) collision = false; - - if (collision && (collisionPoint != 0)) - { - collisionPoint->x = xi; - collisionPoint->y = yi; - } - } - - return collision; -} - -// Check if point belongs to line created between two points [p1] and [p2] with defined margin in pixels [threshold] -bool CheckCollisionPointLine(Vector2 point, Vector2 p1, Vector2 p2, int threshold) -{ - bool collision = false; - - float dxc = point.x - p1.x; - float dyc = point.y - p1.y; - float dxl = p2.x - p1.x; - float dyl = p2.y - p1.y; - float cross = dxc*dyl - dyc*dxl; - - if (fabsf(cross) < (threshold*fmaxf(fabsf(dxl), fabsf(dyl)))) - { - if (fabsf(dxl) >= fabsf(dyl)) collision = (dxl > 0)? ((p1.x <= point.x) && (point.x <= p2.x)) : ((p2.x <= point.x) && (point.x <= p1.x)); - else collision = (dyl > 0)? ((p1.y <= point.y) && (point.y <= p2.y)) : ((p2.y <= point.y) && (point.y <= p1.y)); - } - - return collision; -} - -// Get collision rectangle for two rectangles collision -Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2) -{ - Rectangle overlap = { 0 }; - - float left = (rec1.x > rec2.x)? rec1.x : rec2.x; - float right1 = rec1.x + rec1.width; - float right2 = rec2.x + rec2.width; - float right = (right1 < right2)? right1 : right2; - float top = (rec1.y > rec2.y)? rec1.y : rec2.y; - float bottom1 = rec1.y + rec1.height; - float bottom2 = rec2.y + rec2.height; - float bottom = (bottom1 < bottom2)? bottom1 : bottom2; - - if ((left < right) && (top < bottom)) - { - overlap.x = left; - overlap.y = top; - overlap.width = right - left; - overlap.height = bottom - top; - } - - return overlap; -} - -//---------------------------------------------------------------------------------- -// Module specific Functions Definition -//---------------------------------------------------------------------------------- - -// Cubic easing in-out -// NOTE: Used by DrawLineBezier() only -static float EaseCubicInOut(float t, float b, float c, float d) -{ - if ((t /= 0.5f*d) < 1) return 0.5f*c*t*t*t + b; - - t -= 2; - - return 0.5f*c*(t*t*t + 2.0f) + b; -} - -#endif // SUPPORT_MODULE_RSHAPES |
