/// <summary>
/// Renders the viewport to a bitmap.
/// </summary>
/// <param name="view">The viewport.</param>
/// <param name="background">The background.</param>
/// <param name="m">The oversampling multiplier.</param>
/// <returns>A bitmap.</returns>
public static BitmapSource RenderBitmap(this Viewport3DX view, Brush background, int m = 1)
{
var target = new WriteableBitmap(
(int)view.ActualWidth * m, (int)view.ActualHeight * m, 96, 96, PixelFormats.Pbgra32, null);
var originalCamera = view.Camera;
var vm = originalCamera.GetViewMatrix3D();
double ar = view.ActualWidth / view.ActualHeight;
for (int i = 0; i < m; i++)
{
for (int j = 0; j < m; j++)
{
// change the camera viewport and scaling
var pm = originalCamera.GetProjectionMatrix3D(ar);
if (originalCamera is OrthographicCamera)
{
pm.OffsetX = m - 1 - (i * 2);
pm.OffsetY = -(m - 1 - (j * 2));
}
if (originalCamera is PerspectiveCamera)
{
pm.M31 = -(m - 1 - (i * 2));
pm.M32 = m - 1 - (j * 2);
}
pm.M11 *= m;
pm.M22 *= m;
var mc = new MatrixCamera(vm, pm);
view.Camera = mc;
var partialBitmap = new RenderTargetBitmap(
(int)view.ActualWidth, (int)view.ActualHeight, 96, 96, PixelFormats.Pbgra32);
// render background
var backgroundRectangle = new Rectangle
{
Width = partialBitmap.Width,
Height = partialBitmap.Height,
Fill = background
};
backgroundRectangle.Arrange(new Rect(0, 0, backgroundRectangle.Width, backgroundRectangle.Height));
partialBitmap.Render(backgroundRectangle);
// render 3d
partialBitmap.Render(view);
// copy to the target bitmap
CopyBitmap(partialBitmap, target, (int)(i * view.ActualWidth), (int)(j * view.ActualHeight));
}
}
// restore the camera
view.Camera = originalCamera;
return(target);
}
/// <summary>
/// Renders the viewport to a bitmap.
/// </summary>
/// <param name="view">The viewport.</param>
/// <param name="background">The background.</param>
/// <param name="m">The oversampling multiplier.</param>
/// <returns>A bitmap.</returns>
public static BitmapSource RenderBitmap(this Viewport3DX view, Brush background, int m = 1)
{
var target = new WriteableBitmap(
(int)view.ActualWidth * m, (int)view.ActualHeight * m, 96, 96, PixelFormats.Pbgra32, null);
var originalCamera = view.Camera;
var vm = originalCamera.GetViewMatrix3D();
double ar = view.ActualWidth / view.ActualHeight;
for (int i = 0; i < m; i++)
{
for (int j = 0; j < m; j++)
{
// change the camera viewport and scaling
var pm = originalCamera.GetProjectionMatrix3D(ar);
if (originalCamera is OrthographicCamera)
{
pm.OffsetX = m - 1 - (i * 2);
pm.OffsetY = -(m - 1 - (j * 2));
}
if (originalCamera is PerspectiveCamera)
{
pm.M31 = -(m - 1 - (i * 2));
pm.M32 = m - 1 - (j * 2);
}
pm.M11 *= m;
pm.M22 *= m;
var mc = new MatrixCamera(vm, pm);
view.Camera = mc;
var partialBitmap = new RenderTargetBitmap(
(int)view.ActualWidth, (int)view.ActualHeight, 96, 96, PixelFormats.Pbgra32);
// render background
var backgroundRectangle = new Rectangle
{
Width = partialBitmap.Width,
Height = partialBitmap.Height,
Fill = background
};
backgroundRectangle.Arrange(new Rect(0, 0, backgroundRectangle.Width, backgroundRectangle.Height));
partialBitmap.Render(backgroundRectangle);
// render 3d
partialBitmap.Render(view);
// copy to the target bitmap
CopyBitmap(partialBitmap, target, (int)(i * view.ActualWidth), (int)(j * view.ActualHeight));
}
}
// restore the camera
view.Camera = originalCamera;
return target;
}
