/// <summary>
/// Renders this object
/// </summary>
/// <param name="context">Rendering context</param>
public void Render( IRenderContext context )
{
ICamera3 camera = Graphics.Renderer.Camera as ICamera3;
if ( camera == null )
{
throw new InvalidOperationException( "Expected ICamera3 to be attached to renderer" );
}
ReflectionsRenderContext reflectionsContext = new ReflectionsRenderContext( context, m_Reflections );
RenderPlanarReflections( reflectionsContext, camera );
// Render the scene as usual
reflectionsContext.RenderingReflections = false;
RenderSceneObjects( reflectionsContext );
}
/// <summary>
/// Renders reflections on the first <see cref="ReflectionPlane"/> found in the scene
/// </summary>
private void RenderPlanarReflections( ReflectionsRenderContext reflectionsContext, ICamera3 camera )
{
ReflectionPlane plane = ReflectionPlane;
if ( plane == null )
{
return;
}
// Matrix44 reflectionMatrix = Matrix44.MakeReflectionMatrix( new Point3( 0, -10, 0 ), new Vector3( 0, 1, 0 ) );
Matrix44 reflectionMatrix = plane.CreateReflectionMatrix( );
Matrix44 reflectedCameraMatrix = new Matrix44( camera.InverseFrame * reflectionMatrix );
// reflectedCameraMatrix.YAxis = -reflectedCameraMatrix.YAxis; // Restore handedness
Graphics.Renderer.PushTransform( TransformType.WorldToView );
Graphics.Renderer.SetTransform( TransformType.WorldToView, reflectedCameraMatrix );
Graphics.Renderer.PushTransform( TransformType.ViewToScreen );
IProjectionCamera projCamera = ( IProjectionCamera )camera;
Graphics.Renderer.SetPerspectiveProjectionTransform( projCamera.PerspectiveFovDegrees, 1, projCamera.PerspectiveZNear, projCamera.PerspectiveZFar );
m_ReflectionMatrixDataSource.Value = Graphics.Renderer.GetTransform( TransformType.ViewToScreen ) * reflectedCameraMatrix;
// TODO: AP: Reflect camera position
System.Drawing.Rectangle viewport = Graphics.Renderer.Viewport;
Graphics.Renderer.SetViewport( 0, 0, m_Reflections.Width, m_Reflections.Height );
reflectionsContext.RenderingReflections = true;
m_Reflections.Begin( );
Graphics.Renderer.ClearDepth( 1.0f );
Graphics.Renderer.ClearColour( Color.SteelBlue );
RenderSceneObjects( reflectionsContext );
m_Reflections.End( );
Graphics.Renderer.SetViewport( viewport.X, viewport.Y, viewport.Width, viewport.Height );
Graphics.Renderer.PopTransform( TransformType.WorldToView );
Graphics.Renderer.PopTransform( TransformType.ViewToScreen );
}
