/// <summary>
/// Initializes the transforms used for the 3D model.
/// </summary>
private void InitializeTransform()
{
this.Scene = new VikingXNA.Scene(Device.Viewport, this.Camera);
// Use the world matrix to tilt the cube along x and y axes.
// worldMatrix = Matrix.Identity; // CreateRotationX(_CameraTilt) * Matrix.CreateRotationZ(_CameraPan);
// projectionMatrix = Matrix.CreateOrthographic((float)ProjectedArea.Width, (float)ProjectedArea.Height, MinDrawDistance, MaxDrawDistance);
}
/// <summary>
/// Draws the volume using the bounds and downsample onto the renderTarget. If renderTarget is null the scene is drawn to the display
/// </summary>
/// <param name="graphicsDevice"></param>
/// <param name="Bounds"></param>
/// <param name="DownSample"></param>
/// <param name="renderTarget"></param>
protected virtual void Draw(Scene scene)
{
}
protected void UpdateSceneViewport(Scene scene)
{
Microsoft.Xna.Framework.Rectangle ClientBounds = new Microsoft.Xna.Framework.Rectangle(0,
0,
ClientRectangle.Width,
ClientRectangle.Height);
if (ClientBounds.Height == 0 || ClientBounds.Width == 0)
{
return;
}
if (Device == null)
{
return;
}
//Figure out how much we have to scale the downsample to keep the same scene in view if minimizing
Viewport viewport = Device.Viewport;
if (Device != null)
{
this.Downsample = Downsample * (((double)viewport.Width * (double)viewport.Height) / ((double)ClientBounds.Width * (double)ClientBounds.Height));
if (viewport.Width != ClientBounds.Width ||
viewport.Height != ClientBounds.Height)
{
this.graphicsDeviceService.ResetDevice(ClientRectangle.Width, ClientRectangle.Height);
}
}
// this.GraphicsDevice.Viewport.Width = ClientSize.Width;
// GraphicsDevice.Viewport.Height = ClientSize.Height;
//Trace.WriteLine("Projection Bounds: " + ProjRect.ToString() + " Client Rect: " + ClientRectangle.ToString());
scene.Viewport = Device.Viewport;
}
protected void Draw(Scene drawnScene, RenderTarget2D renderTarget)
{
Device.SetRenderTarget(renderTarget);
try
{
Device.Viewport = drawnScene.Viewport;
}
catch (ArgumentException)
{
UpdateSceneViewport(drawnScene);
Device.Viewport = drawnScene.Viewport;
}
annotationOverlayEffect.RenderTargetSize = drawnScene.Viewport;
#if DEBUG
if (renderTarget != null)
{
Debug.Assert(renderTarget.Bounds.Width >= drawnScene.Viewport.Width &&
renderTarget.Bounds.Height >= drawnScene.Viewport.Height);
}
#endif
if (DefaultDepthState == null || DefaultDepthState.IsDisposed)
{
DefaultDepthState = new DepthStencilState();
DefaultDepthState.DepthBufferEnable = true;
DefaultDepthState.DepthBufferFunction = CompareFunction.LessEqual;
DefaultDepthState.StencilEnable = false;
DefaultDepthState.DepthBufferWriteEnable = true;
}
Device.DepthStencilState = DefaultDepthState;
if (DefaultBlendState == null || DefaultBlendState.IsDisposed)
{
DefaultBlendState = new BlendState();
DefaultBlendState.AlphaSourceBlend = Blend.SourceAlpha;
DefaultBlendState.AlphaDestinationBlend = Blend.InverseSourceAlpha;
DefaultBlendState.ColorSourceBlend = Blend.SourceAlpha;
DefaultBlendState.ColorDestinationBlend = Blend.InverseSourceAlpha;
}
Device.BlendState = DefaultBlendState;
SamplerState sampleState = Device.SamplerStates[0];
if (sampleState == null || sampleState.IsDisposed ||
(sampleState.AddressU != TextureAddressMode.Clamp || sampleState.AddressV != TextureAddressMode.Clamp))
{
try
{
sampleState = new SamplerState();
sampleState.AddressU = TextureAddressMode.Clamp; //Compatability with Reach
sampleState.AddressV = TextureAddressMode.Clamp;
Device.SamplerStates[0] = sampleState;
}
catch (Exception)
{
if (sampleState != null)
{
sampleState.Dispose();
sampleState = null;
}
}
}
Device.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.Black, float.MaxValue, 0);
if (Device.RasterizerState == null ||
Device.RasterizerState.IsDisposed ||
Device.RasterizerState.CullMode != CullMode.None)
{
RasterizerState rState = null;
try
{
rState = new RasterizerState();
rState.CullMode = CullMode.None;
Device.RasterizerState = rState;
}
catch (Exception)
{
if (rState != null)
{
rState.Dispose();
rState = null;
}
}
}
Matrix worldViewProj = drawnScene.WorldViewProj;
//Enables some basic effect characteristics, such as vertex coloring and default lighting.
basicEffect.Projection = drawnScene.Projection;
basicEffect.View = drawnScene.Camera.View;
basicEffect.World = drawnScene.World;
tileLayoutEffect.WorldViewProjMatrix = worldViewProj;
this.channelOverlayEffect.WorldViewProjMatrix = worldViewProj;
this.mergeHSVImagesEffect.WorldViewProjMatrix = worldViewProj;
this.annotationOverlayEffect.WorldViewProjMatrix = worldViewProj;
if (this.spriteBatch == null || this.spriteBatch.GraphicsDevice.IsDisposed)
{
IGraphicsDeviceService IService = this.Services.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
if (IService != null)
{
spriteBatch = new SpriteBatch(IService.GraphicsDevice);
fontArial = Content.Load<SpriteFont>(@"Arial");
}
}
// GridRectangle Bounds = VisibleBounds();
#if !DEBUG
try
{
#endif
//Since draw can be called from other methods than paint calls,
//such as screencaptures, increment the PaintCallRefCount here
PaintCallRefCount++;
// Draw the control using the GraphicsDevice.
Draw(drawnScene);
#if !DEBUG
}
catch (Exception except)
{
throw except;
}
finally
{
#endif
PaintCallRefCount--;
#if !DEBUG
}
#endif
}