public void FillEllipse(Color innerColor, Color outerColor, GraphicsPoint center, double hRadius, double vRadius)
{
if (hRadius == 0 && vRadius == 0)
{
Draw(PrimitiveType.Points, new[] { center }, innerColor);
return;
}
var ellipse = Polygon.Ellipse(center, hRadius, vRadius);
var vertices = new GraphicsPoint[ellipse.Length + 2];
int i = 0;
vertices[i++] = center;
foreach (var p in ellipse.Vertices)
{
vertices[i++] = (GraphicsPoint)p;
}
vertices[vertices.Length - 1] = new GraphicsPoint(center.X + hRadius, center.Y);
var colors = new Color[ellipse.Length + 2];
colors[0] = innerColor;
for (int j = 1; j < colors.Length; j++)
{
colors[j] = outerColor;
}
_renderSystem.SetVertices(vertices);
_renderSystem.SetColors(colors);
_renderSystem.Render(PrimitiveType.TriangleFan);
}
public static GraphicsPoint[] Tesselate(this Polygon polygon)
{
var result = new GraphicsPoint[polygon.Length];
for (int i = 0, sign = 1; i < polygon.Length; i++, sign = -sign)
{
result[i] = (GraphicsPoint)polygon.Vertex(i * sign);
}
return(result);
}
internal SubTexture(Texture buffer, GraphicsPoint topLeft, GraphicsPoint topRight, GraphicsPoint bottomLeft, GraphicsPoint bottomRight)
{
TriangleStripCoords = new[] { topLeft, topRight, bottomLeft, bottomRight };
Texture = buffer;
}
public void FillEllipse(Color color, GraphicsPoint location, double hRadius, double vRadius)
{
_renderSystem.SetVertices(Polygon.Ellipse(location, hRadius, vRadius).Tesselate());
_renderSystem.SetColor(color);
_renderSystem.Render(PrimitiveType.LineLoop);
}