void OnIsFrontBufferAvailableChanged(object sender, DependencyPropertyChangedEventArgs e)
{
// Request redrawing when it is available again
if ((bool)e.NewValue) Invalidate();
else
{
// D3DImage is no so good to handle availability changing,
// so make things carefully as possible
if (renderTarget != null) renderTarget.Dispose();
renderTarget = null;
}
}
/// <summary>
/// Refreshes output content
/// </summary>
void Update()
{
// Skip if something missing
if (camera == null || render == null) return;
d3dImage.Lock();
// Check whether current render target exists and has appropriate size
if (renderTarget == null || (int)RenderSize.Width != renderTarget.Width || (int)RenderSize.Height != renderTarget.Height)
{
if (renderTarget != null) renderTarget.Dispose();
renderTarget = new RenderTarget((int)RenderSize.Width, (int)RenderSize.Height);
}
// Set it as current
d3dImage.SetBackBuffer(D3DResourceType.IDirect3DSurface9, renderTarget.Handle);
// Render to it & unlock
render.Draw(renderTarget, camera);
d3dImage.AddDirtyRect(new Int32Rect(0, 0, renderTarget.Width, renderTarget.Height));
d3dImage.Unlock();
}
/// <summary>
/// Renders the content to the render target
/// </summary>
/// <param name="renderTarget">Render target</param>
/// <param name="camera">Camera</param>
public void Draw(RenderTarget renderTarget, Camera camera)
{
// Upload atom's data
if (!atomsUploaded) { UploadAtoms(); atomsUploaded = true; }
// Upload bonds's data
if (!bondsUploaded) { UploadBonds(); bondsUploaded = true; }
// Upload bonds's render options
if (!bondRenderOptionsUploaded) { UploadBondRenderOptions(); bondRenderOptionsUploaded = true; }
// Upload elements materials data
if (!elementMaterialsUploaded) { UploadElementMaterials(); elementMaterialsUploaded = true; }
// Upload ribbons data
if (!residuesUploaded) { UploadResidues(); residuesUploaded = true; }
// Upload ribbons material's data
if (!residuesMaterialsUploaded) { UploadResidueMaterials(); residuesMaterialsUploaded = true; }
// Rendering
Matrix3D viewMatrix = camera.View;
Matrix3D projectionMatrix = camera.Projection;
IntPtr viewMatrixPointer = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Matrix3D)));
IntPtr projectionMatrixPointer = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Matrix3D)));
Marshal.StructureToPtr(viewMatrix, viewMatrixPointer, false);
Marshal.StructureToPtr(projectionMatrix, projectionMatrixPointer, false);
try
{
RenderTo(handle, renderTarget.Handle, viewMatrixPointer, projectionMatrixPointer);
}
finally
{
Marshal.FreeHGlobal(viewMatrixPointer);
Marshal.FreeHGlobal(projectionMatrixPointer);
}
}