/// <summary>
/// This needs to be updated to use the same approach as Draw(Rectangle, Rectangle)
/// </summary>
/// <param name="srcRects"></param>
/// <param name="destRects"></param>
public override void DrawRects(RectangleF[] srcRects, RectangleF[] destRects, int start, int length)
{
PositionColorNormalTexture[] verts =
new PositionColorNormalTexture[srcRects.Length * 4];
short[] indices = new short[srcRects.Length * 6];
int startIndex = 0;
int indexIndex = 0;
for (int i = start; i < start + length; i++)
{
AddRectToVB(verts, startIndex, srcRects[i], destRects[i]);
indices[indexIndex] = (short)startIndex;
indices[indexIndex + 1] = (short)(startIndex + 1);
indices[indexIndex + 2] = (short)(startIndex + 2);
indices[indexIndex + 3] = (short)(startIndex + 2);
indices[indexIndex + 4] = (short)(startIndex + 1);
indices[indexIndex + 5] = (short)(startIndex + 3);
startIndex += 4;
indexIndex += 6;
}
mDevice.DrawBuffer.CacheDrawIndexedTriangles(verts, indices, mTexture.Value, true);
//mDevice.SetDeviceStateTexture(mTexture.Value);
//mDevice.AlphaBlend = true;
//mDevice.VertexFormat = CustomVertex.TransformedColoredTextured.Format;
////mDevice.Device.DrawUserPrimitives(PrimitiveType.TriangleList, 2 * srcRects.Length, verts);
//mDevice.Device.DrawIndexedUserPrimitives(PrimitiveType.TriangleList, 0, indexIndex,
// srcRects.Length * 2, indices, true, verts);
}
private void AddRectToVB(PositionColorNormalTexture[] verts, int startIndex,
RectangleF srcRect, RectangleF destRect)
{
// find center
PointF centerpt = Origin.CalcF(DisplayAlignment, DisplaySize);
float left = destRect.Left - 0.5f;
float top = destRect.Top - 0.5f;
float right = destRect.Right - 0.5f; // +(float)Math.Floor(destRect.Width / (float)srcRect.Width);
float bottom = destRect.Bottom - 0.5f; // +(float)Math.Floor(destRect.Height / (float)srcRect.Height);
PointF[] corners = new PointF[4]
{
new PointF(left, top),
new PointF(right, top),
new PointF(left, bottom),
new PointF(right, bottom)
};
PointF[] uv = new PointF[4]
{
new PointF(mSrcRect.Left + srcRect.Left, mSrcRect.Top + srcRect.Top),
new PointF(mSrcRect.Left + srcRect.Right, mSrcRect.Top + srcRect.Top),
new PointF(mSrcRect.Left + srcRect.Left, mSrcRect.Top + srcRect.Bottom),
new PointF(mSrcRect.Left + srcRect.Right, mSrcRect.Top + srcRect.Bottom)
};
TranslatePointInPlace(ref corners, centerpt);
for (int i = 0; i < 4; i++)
{
verts[startIndex + i] = new PositionColorNormalTexture(
corners[i].X, corners[i].Y, 0.0F, Color.ToArgb(),
uv[i].X / (float)mTextureSize.Width, uv[i].Y / (float)mTextureSize.Height,
0, 0, -1);
}
}
