public static Polygon BuildRectangle(float x, float y, float width, float height)
{
Polygon result = new Polygon(4);
result.AddVertex(x, y);
result.AddVertex(x + width, y);
result.AddVertex(x + width, y + height);
result.AddVertex(x, y + height);
return(result);
}
public static Polygon BuildCircle(int vertices, Vector2 center, float radius)
{
Polygon result = new Polygon(vertices);
for (double i = 0; i < MathHelper.TwoPi; i += (float)MathHelper.TwoPi / (float)vertices)
{
result.AddVertex(center + radius * new Vector2((float)(Math.Cos(i)), (float)(Math.Sin(i))));
}
return(result);
}