private void SetVertsColor(PositionColorNormalTexture[] verts, int startIndex, int count,
double x, double y, double width, double height)
{
verts[startIndex].Color = ColorGradient.Interpolate(x, y).ToArgb();
verts[startIndex + 1].Color = ColorGradient.Interpolate(x + width, y).ToArgb();
verts[startIndex + 2].Color = ColorGradient.Interpolate(x, y + height).ToArgb();
verts[startIndex + 3].Color = ColorGradient.Interpolate(x + width, y + height).ToArgb();
}
void DrawImpl(float destX, float destY, Rectangle srcRect, float rotationCenterX, float rotationCenterY)
{
SizeF dispSize = new SizeF(
srcRect.Width * (float)ScaleWidth,
srcRect.Height * (float)ScaleHeight);
if (DisplaySize.Width < 0)
{
destX -= dispSize.Width;
rotationCenterX += dispSize.Width;
}
if (DisplaySize.Height < 0)
{
destY -= dispSize.Height;
rotationCenterY += dispSize.Height;
}
mTexCoord = GetTextureCoords(srcRect);
mState.DrawBuffer.SetInterpolationMode(InterpolationHint);
if (TesselateFactor == 1)
{
BufferQuad(destX, destY, rotationCenterX, rotationCenterY,
dispSize.Width, dispSize.Height, mTexCoord, ColorGradient);
}
else
{
TextureCoordinates texCoord = new TextureCoordinates();
float texWidth = mTexCoord.Right - mTexCoord.Left;
float texHeight = mTexCoord.Bottom - mTexCoord.Top;
float displayWidth = DisplayWidth / (float)TesselateFactor;
float displayHeight = DisplayHeight / (float)TesselateFactor;
for (int j = 0; j < TesselateFactor; j++)
{
texCoord.Top = mTexCoord.Top + j * texHeight / TesselateFactor;
texCoord.Bottom = mTexCoord.Top + (j + 1) * texHeight / TesselateFactor;
for (int i = 0; i < TesselateFactor; i++)
{
texCoord.Left = mTexCoord.Left + i * texWidth / TesselateFactor;
texCoord.Right = mTexCoord.Left + (i + 1) * texWidth / TesselateFactor;
float dx = destX + i * displayWidth * mRotationCos + j * displayHeight * mRotationSin;
float dy = destY - i * displayWidth * mRotationSin + j * displayHeight * mRotationCos;
double cx = i / (double)TesselateFactor;
double cy = j / (double)TesselateFactor;
Gradient color = new Gradient(
ColorGradient.Interpolate(cx, cy),
ColorGradient.Interpolate(cx + 1.0 / TesselateFactor, cy),
ColorGradient.Interpolate(cx, cy + 1.0 / TesselateFactor),
ColorGradient.Interpolate(cx + 1.0 / TesselateFactor, cy + 1.0 / TesselateFactor));
BufferQuad(dx, dy,
rotationCenterX, rotationCenterY,
displayWidth, displayHeight, texCoord, color);
}
}
}
//GL.PushMatrix();
//GL.Translatef(-translatePoint.X, -translatePoint.Y, 0);
//GL.Rotatef((float)-RotationAngleDegrees, 0.0f, 0.0f, 1.0f);
// restore the matrix
//GL.PopMatrix();
}
