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Fixed regular polygon shape rendering (#972)

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AlexHCC 2019-09-22 22:25:39 +03:00 committed by Ray
parent 1f730b3b35
commit acedf4a0d5
1 changed files with 15 additions and 11 deletions
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18
src/shapes.c
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@ -1298,6 +1298,7 @@ void DrawTriangleStrip(Vector2 *points, int pointsCount, Color color)
void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color) void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color color)
{ {
if (sides < 3) sides = 3; if (sides < 3) sides = 3;
float internalAngle = 360.0f/(float)sides;
if (rlCheckBufferLimit(4*(360/sides))) rlglDraw(); if (rlCheckBufferLimit(4*(360/sides))) rlglDraw();
@ -1309,7 +1310,7 @@ void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color col
rlEnableTexture(GetShapesTexture().id); rlEnableTexture(GetShapesTexture().id);
rlBegin(RL_QUADS); rlBegin(RL_QUADS);
for (int i = 0; i < 360; i += 360/sides) for (int i = 0; i < sides; i++)
{ {
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
@ -1317,25 +1318,28 @@ void DrawPoly(Vector2 center, int sides, float radius, float rotation, Color col
rlVertex2f(0, 0); rlVertex2f(0, 0);
rlTexCoord2f(recTexShapes.x/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height); rlTexCoord2f(recTexShapes.x/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height);
rlVertex2f(sinf(DEG2RAD*i)*radius, cosf(DEG2RAD*i)*radius); rlVertex2f(sinf(DEG2RAD*internalAngle)*radius, cosf(DEG2RAD*internalAngle)*radius);
rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height); rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, (recTexShapes.y + recTexShapes.height)/texShapes.height);
rlVertex2f(sinf(DEG2RAD*i)*radius, cosf(DEG2RAD*i)*radius); rlVertex2f(sinf(DEG2RAD*internalAngle)*radius, cosf(DEG2RAD*internalAngle)*radius);
internalAngle += 360.0f/(float)sides;
rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, recTexShapes.y/texShapes.height); rlTexCoord2f((recTexShapes.x + recTexShapes.width)/texShapes.width, recTexShapes.y/texShapes.height);
rlVertex2f(sinf(DEG2RAD*(i + 360/sides))*radius, cosf(DEG2RAD*(i + 360/sides))*radius); rlVertex2f(sinf(DEG2RAD*internalAngle)*radius, cosf(DEG2RAD*internalAngle)*radius);
} }
rlEnd(); rlEnd();
rlDisableTexture(); rlDisableTexture();
#else #else
rlBegin(RL_TRIANGLES); rlBegin(RL_TRIANGLES);
for (int i = 0; i < 360; i += 360/sides) for (int i = 0; i < sides; i++)
{ {
rlColor4ub(color.r, color.g, color.b, color.a); rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex2f(0, 0); rlVertex2f(0, 0);
rlVertex2f(sinf(DEG2RAD*i)*radius, cosf(DEG2RAD*i)*radius); rlVertex2f(sinf(DEG2RAD*internalAngle)*radius, cosf(DEG2RAD*internalAngle)*radius);
rlVertex2f(sinf(DEG2RAD*(i + 360/sides))*radius, cosf(DEG2RAD*(i + 360/sides))*radius);
internalAngle += 360.0f/(float)sides;
rlVertex2f(sinf(DEG2RAD*internalAngle)*radius, cosf(DEG2RAD*internalAngle)*radius);
} }
rlEnd(); rlEnd();
#endif #endif