quartznet/raylib
Watch
2
0
Fork
You've already forked raylib
 0
Code Issues Pull requests Releases 25 Activity

[rshapes] Add DrawEllipseLinesEx()

Browse source 
Add DrawEllipseLinesEx() to the API for consistency with other shape drawing functions.
This commit is contained in:
Matthew Roush 2026-07-20 17:29:17 -04:00
commit c2232b839d
2 changed files with 71 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
src/raylib.h
View file

@ -1313,6 +1313,7 @@ RLAPI void DrawEllipse(int centerX, int centerY, float radiusH, float radiusV, C
RLAPI void DrawEllipseV(Vector2 center, float radiusH, float radiusV, Color color); // Draw ellipse (Vector version)
RLAPI void DrawEllipseLines(int centerX, int centerY, float radiusH, float radiusV, Color color); // Draw ellipse outline
RLAPI void DrawEllipseLinesV(Vector2 center, float radiusH, float radiusV, Color color); // Draw ellipse outline (Vector version)
RLAPI void DrawEllipseLinesEx(Vector2 center, float radiusH, float radiusV, float thick, Color color); // Draw ellipse outline with line thickness
RLAPI void DrawRing(Vector2 center, float innerRadius, float outerRadius, float startAngle, float endAngle, int segments, Color color); // Draw ring
RLAPI void DrawRingLines(Vector2 center, float innerRadius, float outerRadius, float startAngle, float endAngle, int segments, Color color); // Draw ring outline

70
src/rshapes.c
View file

@ -1690,6 +1690,76 @@ void DrawEllipseLinesV(Vector2 center, float radiusH, float radiusV, Color color
rlEnd();
}
// Draw ellipse outline with thickness
void DrawEllipseLinesEx(Vector2 center, float radiusH, float radiusV, float thick, Color color)
{
float outerRadiusH = radiusH, innerRadiusH = radiusH - thick;
float outerRadiusV = radiusV, innerRadiusV = radiusV - thick;
if (thick >= 0.0f) {
// Just a filled-in ellipse
if (innerRadiusH <= 0.0f || innerRadiusV <= 0.0f)
{
DrawEllipseV(center, radiusH, radiusV, color);
return;
}
}
else
{
// The outline is growing outside of the ellipse, so swap the inner and outer radius
float tmp = outerRadiusH;
outerRadiusH = innerRadiusH;
innerRadiusH = tmp;
tmp = outerRadiusV;
outerRadiusV = innerRadiusV;
innerRadiusV = tmp;
}
#if SUPPORT_QUADS_DRAW_MODE
rlSetTexture(GetShapesTexture().id);
Rectangle shapeRect = GetShapesTextureRectangle();
rlBegin(RL_QUADS);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 0; i < 360; i += 10)
{
rlTexCoord2f(shapeRect.x/texShapes.width, shapeRect.y/texShapes.height);
rlVertex2f(center.x + cosf(DEG2RAD*i)*innerRadiusH, center.y + sinf(DEG2RAD*i)*innerRadiusV);
rlTexCoord2f(shapeRect.x/texShapes.width, (shapeRect.y + shapeRect.height)/texShapes.height);
rlVertex2f(center.x + cosf(DEG2RAD*(i + 10))*innerRadiusH, center.y + sinf(DEG2RAD*(i + 10))*innerRadiusV);
rlTexCoord2f((shapeRect.x + shapeRect.width)/texShapes.width, (shapeRect.y + shapeRect.height)/texShapes.height);
rlVertex2f(center.x + cosf(DEG2RAD*(i + 10))*outerRadiusH, center.y + sinf(DEG2RAD*(i + 10))*outerRadiusV);
rlTexCoord2f((shapeRect.x + shapeRect.width)/texShapes.width, shapeRect.y/texShapes.height);
rlVertex2f(center.x + cosf(DEG2RAD*i)*outerRadiusH, center.y + sinf(DEG2RAD*i)*outerRadiusV);
}
rlEnd();
rlSetTexture(0);
#else
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 0; i < 360; i += 10)
{
rlVertex2f(center.x + cosf(DEG2RAD*i)*innerRadiusH, center.y + sinf(DEG2RAD*i)*innerRadiusV);
rlVertex2f(center.x + cosf(DEG2RAD*(i + 10))*innerRadiusH, center.y + sinf(DEG2RAD*(i + 10))*innerRadiusV);
rlVertex2f(center.x + cosf(DEG2RAD*(i + 10))*outerRadiusH, center.y + sinf(DEG2RAD*(i + 10))*outerRadiusV);
rlVertex2f(center.x + cosf(DEG2RAD*i)*innerRadiusH, center.y + sinf(DEG2RAD*i)*innerRadiusV);
rlVertex2f(center.x + cosf(DEG2RAD*(i + 10))*outerRadiusH, center.y + sinf(DEG2RAD*(i + 10))*outerRadiusV);
rlVertex2f(center.x + cosf(DEG2RAD*i)*outerRadiusH, center.y + sinf(DEG2RAD*i)*outerRadiusV);
}
rlEnd();
#endif
}
// Draw ring
void DrawRing(Vector2 center, float innerRadius, float outerRadius, float startAngle, float endAngle, int segments, Color color)
{