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ADDED: DrawCircleSector()

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Ray 2019-02-13 00:06:06 +01:00
parent e46c23128e
commit 297dd641e8
2 changed files with 49 additions and 39 deletions
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1
src/raylib.h
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@ -1033,6 +1033,7 @@ RLAPI void DrawLineV(Vector2 startPos, Vector2 endPos, Color color);
RLAPI void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color); // Draw a line defining thickness
RLAPI void DrawLineBezier(Vector2 startPos, Vector2 endPos, float thick, Color color); // Draw a line using cubic-bezier curves in-out
RLAPI void DrawCircle(int centerX, int centerY, float radius, Color color); // Draw a color-filled circle
RLAPI void DrawCircleSector(Vector2 center, float radius, int startAngle, int endAngle, Color color); // Draw a piece of a circle
RLAPI void DrawCircleGradient(int centerX, int centerY, float radius, Color color1, Color color2); // Draw a gradient-filled circle
RLAPI void DrawCircleV(Vector2 center, float radius, Color color); // Draw a color-filled circle (Vector version)
RLAPI void DrawCircleLines(int centerX, int centerY, float radius, Color color); // Draw circle outline

87
src/shapes.c
View File

@ -182,6 +182,53 @@ void DrawCircle(int centerX, int centerY, float radius, Color color)
DrawCircleV((Vector2){ (float)centerX, (float)centerY }, radius, color);
}
// Draw a piece of a circle
// TODO: Support better angle resolution (now limited to CIRCLE_SECTOR_LENGTH)
void DrawCircleSector(Vector2 center, float radius, int startAngle, int endAngle, Color color)
{
#define CIRCLE_SECTOR_LENGTH 10
#if defined(SUPPORT_QUADS_DRAW_MODE)
if (rlCheckBufferLimit(4*((360/CIRCLE_SECTOR_LENGTH)/2))) rlglDraw();
rlEnableTexture(GetShapesTexture().id);
rlBegin(RL_QUADS);
for (int i = startAngle; i < endAngle; i += CIRCLE_SECTOR_LENGTH*2)
{
rlColor4ub(color.r, color.g, color.b, color.a);
rlTexCoord2f(recTexShapes.x/texShapes.width, recTexShapes.y/texShapes.height);
rlVertex2f(center.x, center.y);
rlTexCoord2f(recTexShapes.x/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height);
rlVertex2f(center.x + sinf(DEG2RAD*i)*radius, center.y + cosf(DEG2RAD*i)*radius);
rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height);
rlVertex2f(center.x + sinf(DEG2RAD*(i + CIRCLE_SECTOR_LENGTH))*radius, center.y + cosf(DEG2RAD*(i + CIRCLE_SECTOR_LENGTH))*radius);
rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, recTexShapes.y/texShapes.height);
rlVertex2f(center.x + sinf(DEG2RAD*(i + CIRCLE_SECTOR_LENGTH*2))*radius, center.y + cosf(DEG2RAD*(i + CIRCLE_SECTOR_LENGTH*2))*radius);
}
rlEnd();
rlDisableTexture();
#else
if (rlCheckBufferLimit(3*((360/CIRCLE_SECTOR_LENGTH)/2))) rlglDraw();
rlBegin(RL_TRIANGLES);
for (int i = startAngle; i < endAngle; i += CIRCLE_SECTOR_LENGTH)
{
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex2f(center.x, center.y);
rlVertex2f(center.x + sinf(DEG2RAD*i)*radius, center.y + cosf(DEG2RAD*i)*radius);
rlVertex2f(center.x + sinf(DEG2RAD*(i + CIRCLE_SECTOR_LENGTH))*radius, center.y + cosf(DEG2RAD*(i + CIRCLE_SECTOR_LENGTH))*radius);
}
rlEnd();
#endif
}
// 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)
@ -205,45 +252,7 @@ void DrawCircleGradient(int centerX, int centerY, float radius, Color color1, Co
// NOTE: On OpenGL 3.3 and ES2 we use QUADS to avoid drawing order issues (view rlglDraw)
void DrawCircleV(Vector2 center, float radius, Color color)
{
#if defined(SUPPORT_QUADS_DRAW_MODE)
if (rlCheckBufferLimit(4*(36/2))) rlglDraw();
rlEnableTexture(GetShapesTexture().id);
rlBegin(RL_QUADS);
for (int i = 0; i < 360; i += 20)
{
rlColor4ub(color.r, color.g, color.b, color.a);
rlTexCoord2f(recTexShapes.x/texShapes.width, recTexShapes.y/texShapes.height);
rlVertex2f(center.x, center.y);
rlTexCoord2f(recTexShapes.x/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height);
rlVertex2f(center.x + sinf(DEG2RAD*i)*radius, center.y + cosf(DEG2RAD*i)*radius);
rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height);
rlVertex2f(center.x + sinf(DEG2RAD*(i + 10))*radius, center.y + cosf(DEG2RAD*(i + 10))*radius);
rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, recTexShapes.y/texShapes.height);
rlVertex2f(center.x + sinf(DEG2RAD*(i + 20))*radius, center.y + cosf(DEG2RAD*(i + 20))*radius);
}
rlEnd();
rlDisableTexture();
#else
if (rlCheckBufferLimit(3*(36/2))) rlglDraw();
rlBegin(RL_TRIANGLES);
for (int i = 0; i < 360; i += 10)
{
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex2f(center.x, center.y);
rlVertex2f(center.x + sinf(DEG2RAD*i)*radius, center.y + cosf(DEG2RAD*i)*radius);
rlVertex2f(center.x + sinf(DEG2RAD*(i + 10))*radius, center.y + cosf(DEG2RAD*(i + 10))*radius);
}
rlEnd();
#endif
DrawCircleSector(center, radius, 0, 360, color);
}
// Draw circle outline