/// <summary>
/// calculates a new shadow.
/// </summary>
public void ResetShadow()
{
ShadowDirty = false;
if (!Shadow)
{
return;
}
GLShader SaveShader = this.Shader;
RenderKind = RenderKind.Render;
Matrix SaveP = ProjectionMatrix;
Texture SaveTexture = texture;
GL.Enable(EnableCap.PolygonOffsetFill);
GL.PolygonOffset(1, 0);
Shader = ShadowDepthShader;
ProjectionMatrix = GetLightProjectionMatrix();
ShadowFBO.EnableWriting();
OnPaint();
ShadowFBO.DisableWriting();
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, ShadowFBO.FboTexture);
ProjectionMatrix = SaveP;
Shader = SaveShader;
GL.ActiveTexture(TextureUnit.Texture0);
}
Texture GetPatternTexture(OpenGlDevice Device)
{
Texture Save = Device.texture;
if (Pattern == null)
{
return(null);
}
Rectangled R = new Rectangled(Pattern.PatternX, Pattern.PatternY, Pattern.PatternWidth, Pattern.PatternHeight);
FBO FrameBuffer = new FBO();
FrameBuffer.BackGround = System.Drawing.Color.Transparent;
Device.PushMatrix();
xyz RU = new xyz(R.Width, R.Height, 0);
xyz RD = new xyz(R.X, R.Y, 0);
Point _RU = Device.ToScr(RU);
Point _RD = Device.ToScr(RD);
FrameBuffer.Init((int)(_RU.X - _RD.X), (int)(_RD.Y - _RU.Y));
FrameBuffer.EnableWriting();
Pattern.Paint(Device);
Device.PopMatrix();
FrameBuffer.DisableWriting();
Texture result = FrameBuffer.Texture;
Device.texture = Save;
result.WorldWidth = R.Width;
result.WorldHeight = R.Height;
result.Translation = new xy(R.X, R.Y);
FrameBuffer.Dispose(true);
return(result);
}
/// <summary>
/// plays the scene in Bitmap.
/// </summary>
/// <returns></returns>
public Bitmap ScreenShot()
{
FBO FrameBuffer = new FBO((int)ViewPort.Width, (int)ViewPort.Height);
Texture Save = texture;
FrameBuffer.EnableWriting();
Refresh();
FrameBuffer.DisableWriting();
texture = Save;
Bitmap Result = FrameBuffer.ReadBitmap();
FrameBuffer.Dispose();
return(Result);
}