public static Shape GetCircle(GraphicsDevice device, int radius)
{
Shape texture = new Shape(device, radius, radius, EShapes.Circle);
Color[] colorData = new Color[radius * radius];
float diam = radius / 2f;
float diamsq = diam * diam;
for (int x = 0; x < radius; x++)
{
for (int y = 0; y < radius; y++)
{
int index = x * radius + y;
Vector2 pos = new Vector2(x - diam, y - diam);
if (pos.LengthSquared() <= diamsq)
{
colorData[index] = Color.White;
}
else
{
colorData[index] = Color.Transparent;
}
}
}
texture.SetData(colorData);
return texture;
}
public static Shape GetPixel(GraphicsDevice device)
{
Shape pixel = new Shape(device, 1, 1, EShapes.Pixel);
pixel.SetData(new Color[] { Color.Black });
return pixel;
}
