/// <summary>
/// This method is used to set the dimensions and the viewport of the OpenGL control.
/// </summary>
/// <param name="width">The width of the OpenGL drawing area.</param>
/// <param name="height">The height of the OpenGL drawing area.</param>
private void UpdateOpenGLControl(int width, int height)
{
// Lock on OpenGL
lock (this.OpenGL)
{
this.OpenGL.SetDimensions(width, height);
// Set the viewport
this.OpenGL.Viewport(0, 0, width, height);
// If we have a project handler, call it
if (width != -1 && height != -1)
{
OpenGLEventHandler handler = this.Resized;
if (handler != null)
{
handler(this, this.eventArgsFast);
}
else
{
// Otherwise we do our own projection
this.OpenGL.MatrixMode(OpenGL.GL_PROJECTION);
this.OpenGL.LoadIdentity();
// Calculate The Aspect Ratio Of The Window
this.OpenGL.Perspective(45.0f, (float)width / (float)height, 0.1f, 100.0f);
this.OpenGL.MatrixMode(OpenGL.GL_MODELVIEW);
this.OpenGL.LoadIdentity();
}
}
}
}
/// <summary>
/// Handles the Tick event of the timer control.
/// </summary>
private void TimerTick()
{
try
{
if (this.Dispatcher.HasShutdownStarted || this.Dispatcher.HasShutdownFinished)
{
this.timer.Abort();
return;
}
this.Dispatcher.Invoke(
() =>
{
// Lock on OpenGL
lock (this.OpenGL)
{
// Start the stopwatch so that we can time the rendering
this.stopwatch.Restart();
// Make GL current
this.OpenGL.MakeCurrent();
// If there is a draw handler, then call it
OpenGLEventHandler handler = this.OpenGLDraw;
if (handler != null)
{
handler(this, this.eventArgsFast);
}
else
{
this.OpenGL.Clear(OpenGL.GL_COLOR_BUFFER_BIT);
}
// Draw the FPS
if (this.DrawFPS)
{
this.OpenGL.DrawText(5, 5, 1.0f, 0.0f, 0.0f, "Courier New", 12.0f, string.Format("Draw Time: {0:0.0000} ms ~ {1:0.0} FPS", this.frameTime, this.currentFrameRate));
this.OpenGL.Flush();
}
// Render
this.OpenGL.Blit(IntPtr.Zero);
switch (this.RenderContextType)
{
case RenderContextType.DIBSection:
{
DIBSectionRenderContextProvider provider = this.OpenGL.RenderContextProvider as DIBSectionRenderContextProvider;
IntPtr hBitmap = provider.DIBSection.HBitmap;
if (hBitmap != IntPtr.Zero)
{
FormatConvertedBitmap newFormatedBitmapSource = GetFormatedBitmapSource(hBitmap);
// Copy the pixels over
this.image.Source = newFormatedBitmapSource;
}
}
break;
case RenderContextType.NativeWindow:
break;
case RenderContextType.HiddenWindow:
break;
case RenderContextType.FBO:
{
FBORenderContextProvider provider = this.OpenGL.RenderContextProvider as FBORenderContextProvider;
IntPtr hBitmap = provider.InternalDIBSection.HBitmap;
if (hBitmap != IntPtr.Zero)
{
FormatConvertedBitmap newFormatedBitmapSource = GetFormatedBitmapSource(hBitmap);
// Copy the pixels over
this.image.Source = newFormatedBitmapSource;
}
}
break;
default:
break;
}
// Stop the stopwatch
this.stopwatch.Stop();
// Store the frame time
this.frameTime = this.stopwatch.Elapsed.TotalMilliseconds;
}
},
DispatcherPriority.Send);
if (this.frameRate > 0.0)
{
Thread.Sleep(new TimeSpan(0, 0, 0, 0, (int)(Math.Max(1000.0 - this.frameTime, this.frameRate) / this.frameRate)));
}
}
catch (Exception ex)
{
ex.ToString();
}
}
