/// <summary>
/// Paints a triangle onto the screen.
/// </summary>
/// <param name="device"></param>
/// <param name="region"></param>
/// <param name="buffer"></param>
/// <param name="fillColor"></param>
public static void PaintColoredTriangle(Device device, Rectangle rectangle, VertexBuffer buffer, Color fillColor)
{
GraphicsBuffer <TransformedColored> data = buffer.Lock <TransformedColored>(0, 3, LockFlags.None);
buffer.Unlock();
data[0] = new TransformedColored(rectangle.X, rectangle.Y, .5f, 0, fillColor);
data[1] = new TransformedColored(rectangle.Right, rectangle.Y, .5f, 0, fillColor);
data[2] = new TransformedColored((rectangle.X + rectangle.Right) / 2, rectangle.Bottom, .5f, 0, fillColor);
device.RenderState.ZBufferWriteEnable = false;
device.RenderState.AlphaBlendEnable = true;
device.RenderState.CullMode = Cull.None;
device.VertexFormat = TransformedColored.Format;
device.SetStreamSource(0, buffer, 0);
device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 1);
}
/// <summary>
/// Paints a the specified rectangle with the colors specified.
/// </summary>
/// <param name="device"></param>
/// <param name="rectangle"></param>
/// <param name="buffer"></param>
/// <param name="color1"></param>
/// <param name="color2"></param>
/// <param name="gradientDirection"></param>
public static void PaintColoredRectangle(Device device, Rectangle rectangle, VertexBuffer buffer, Color color1, Color color2, GradientDirection gradientDirection)
{
GraphicsBuffer <TransformedColored> data = buffer.Lock <TransformedColored>(0, 4, LockFlags.None);
int topLeftColor = color1.ToArgb();
int topRightColor = gradientDirection == GradientDirection.Horizontal ? color2.ToArgb() : color1.ToArgb();
int bottomLeftColor = gradientDirection == GradientDirection.Horizontal ? color1.ToArgb() : color2.ToArgb();
int bottomRightColor = color2.ToArgb();
data[0] = new TransformedColored(rectangle.X, rectangle.Y, .5f, 0, topLeftColor);
data[1] = new TransformedColored(rectangle.Right, rectangle.Y, .5f, 0, topRightColor);
data[2] = new TransformedColored(rectangle.X, rectangle.Bottom, .5f, 0, bottomLeftColor);
data[3] = new TransformedColored(rectangle.Right, rectangle.Bottom, .5f, 0, bottomRightColor);
buffer.Unlock();
device.RenderState.ZBufferWriteEnable = false;
device.RenderState.AlphaBlendEnable = false;
device.RenderState.CullMode = Cull.None;
device.VertexFormat = TransformedColored.Format;
device.SetStreamSource(0, buffer, 0);
device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 2);
}
