public void DrawSolidCircle(Vec2 center, float radius, Vec2 axis, Color color)
{
drawActions.Enqueue(() =>
{
const float kSegments = 16.0f;
const int VertexCount = 16;
var kIncrement = Settings.Tau / kSegments;
var theta = 0.0f;
GL.Color4(color.R, color.G, color.B, 0.5f);
GL.Begin(PrimitiveType.TriangleFan);
GL.VertexPointer(VertexCount * 2, VertexPointerType.Float, 0, IntPtr.Zero);
for (var i = 0; i < kSegments; ++i)
{
var x = (float)Math.Cos(theta);
var y = (float)Math.Sin(theta);
var vertex = center + (radius * new Vec2(x, y));
GL.Vertex2(vertex.X, vertex.Y);
theta += kIncrement;
}
GL.End();
DrawSegment(center, center + (radius * axis), color);
});
}
public void DrawSegment(Vec2 p1, Vec2 p2, Color color)
{
drawActions.Enqueue(() =>
{
GL.Color4(color.R, color.G, color.B, 1);
GL.Begin(PrimitiveType.Lines);
GL.Vertex2(p1.X, p1.Y);
GL.Vertex2(p2.X, p2.Y);
GL.End();
});
}
public void DrawSolidPolygon(Vec2[] vertices, int vertexCount, Color color)
{
drawActions.Enqueue(() =>
{
GL.Color4(color.R, color.G, color.B, 0.5f);
GL.Begin(PrimitiveType.TriangleFan);
for (var i = 0; i < vertexCount; i++)
{
var vertex = vertices[i];
GL.Vertex2(vertex.X, vertex.Y);
}
GL.End();
});
}
