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Ovals

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This commit is contained in:
Brian Fiete 2025-04-02 09:40:42 -04:00
parent 119da8dada
commit ef0bc6033b
2 changed files with 61 additions and 0 deletions
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40
BeefLibs/Beefy2D/src/geom/Oval.bf Normal file
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@ -0,0 +1,40 @@
namespace Beefy.geom;
struct Oval
{
public float mX;
public float mY;
public float mRadiusX;
public float mRadiusY;
public this(float x, float y, float radiusX, float radiusY)
{
mX = x;
mY = y;
mRadiusX = radiusX;
mRadiusY = radiusY;
}
public this(Rect rect)
{
mX = rect.CenterX;
mY = rect.CenterY;
mRadiusX = rect.mWidth / 2;
mRadiusY = rect.mHeight / 2;
}
public bool Contains(float x, float y)
{
float dx = (x - mX) / mRadiusX;
float dy = (y - mY) / mRadiusY;
return dx*dx + dy*dy <= 1.0f;
}
public void Inflate(float x, float y) mut
{
mRadiusX += x;
mRadiusY += y;
}
public bool Contains(Vector2 vec) => Contains(vec.mX, vec.mY);
}

21
BeefLibs/Beefy2D/src/gfx/Graphics.bf
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@ -1035,6 +1035,27 @@ namespace Beefy.gfx
{
Gfx_CopyDrawVertex((.)idx, (.)srcIdx);
}
public void OutlineOval(float x, float y, float radiusX, float radiusY)
{
int numSections = 40;
for (int section < numSections)
{
float ang0 = (section * Math.PI_f * 2) / numSections;
float ang1 = ((section + 1) * Math.PI_f * 2) / numSections;
float x0 = x + Math.Cos(ang0) * radiusX;
float y0 = y + Math.Sin(ang0) * radiusY;
float x1 = x + Math.Cos(ang1) * radiusX;
float y1 = y + Math.Sin(ang1) * radiusY;
DrawLine(x0, y0, x1, y1);
}
}
public void OutlineCircle(float x, float y, float radius)
{
OutlineOval(x, y, radius, radius);
}
}
#else
public class Graphics : GraphicsBase