private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
var compositor = Window.Current.Compositor;
_surface = LoadedImageSurface.StartLoadFromUri(new Uri("ms-appx:///Assets/webster-pass.png"));
var backgroundBrush = compositor.CreateSurfaceBrush(_surface);
backgroundBrush.Stretch = CompositionStretch.UniformToFill;
var saturationEffect = new SaturationEffect
{
Saturation = 0.0f,
Source = new CompositionEffectSourceParameter("mySource")
};
var saturationEffectFactory = compositor.CreateEffectFactory(saturationEffect);
var bwEffect = saturationEffectFactory.CreateBrush();
bwEffect.SetSourceParameter("mySource", backgroundBrush);
_backgroundVisual = compositor.CreateSpriteVisual();
_backgroundVisual.Brush = bwEffect;
_backgroundVisual.Size = RootElement.RenderSize.ToVector2();
_containerVisual = compositor.CreateContainerVisual();
_containerVisual.Children.InsertAtBottom(_backgroundVisual);
ElementCompositionPreview.SetElementChildVisual(RootElement, _containerVisual);
// Text
_surfaceFactory = SurfaceFactory.GetSharedSurfaceFactoryForCompositor(compositor);
_textSurface = _surfaceFactory.CreateTextSurface("Weston Pass");
_textSurface.ForegroundColor = Color.FromArgb(50, 255, 255, 255);
_textSurface.FontSize = 150;
var textSurfaceBrush = compositor.CreateSurfaceBrush(_textSurface.Surface);
_textVisual = compositor.CreateSpriteVisual();
_textVisual.Size = _textSurface.Size.ToVector2();
_textVisual.RotationAngleInDegrees = 45f;
_textVisual.AnchorPoint = new Vector2(0.5f);
_textVisual.Brush = textSurfaceBrush;
_textVisual.StartAnimation(nameof(Visual.Offset), CreateTextOffsetAnimation(
new Vector3((float)RootElement.ActualWidth / 2, (float)RootElement.ActualWidth / 2, 0)));
_containerVisual.Children.InsertAtTop(_textVisual);
AddLighting();
StartLightingAnimationTimer();
}
private void OnLoaded(object sender, RoutedEventArgs routedEventArgs)
{
// Compositor
_compositor = Window.Current.Compositor;
// Load Image
_imageSurface = LoadedImageSurface.StartLoadFromUri(new Uri("ms-appx:///Assets/webster-pass.png"));
var backgroundBrush = _compositor.CreateSurfaceBrush(_imageSurface);
backgroundBrush.Stretch = CompositionStretch.UniformToFill;
// Apply Saturation Effect (Win2D)
var saturationEffect = new SaturationEffect
{
Saturation = 0,
Source = new CompositionEffectSourceParameter("background")
};
var saturationEffectFactory = _compositor.CreateEffectFactory(saturationEffect);
var saturationBrush = saturationEffectFactory.CreateBrush();
saturationBrush.SetSourceParameter("background", backgroundBrush);
// Add background to visual tree
_backgroundVisual = _compositor.CreateSpriteVisual();
_backgroundVisual.Brush = saturationBrush;
_backgroundVisual.Size = RootElement.RenderSize.ToVector2();
_containerVisual = _compositor.CreateContainerVisual();
_containerVisual.Children.InsertAtBottom(_backgroundVisual);
ElementCompositionPreview.SetElementChildVisual(RootElement, _containerVisual);
// Add Lighting
_ambientLight = _compositor.CreateAmbientLight();
_ambientLight.Intensity = 1.5f;
_ambientLight.Color = Colors.Purple;
_ambientLight.Targets.Add(_backgroundVisual);
_pointLight1 = _compositor.CreatePointLight();
_pointLight1.Color = Colors.Yellow;
_pointLight1.CoordinateSpace = _containerVisual;
_pointLight1.Targets.Add(_backgroundVisual);
_pointLight1.Offset = new Vector3((float)RootElement.ActualWidth, (float)RootElement.ActualHeight * 0.25f, 300);
_pointLight2 = _compositor.CreatePointLight();
_pointLight2.Color = Colors.Green;
_pointLight2.Intensity = 2f;
_pointLight2.CoordinateSpace = _containerVisual;
_pointLight2.Targets.Add(_backgroundVisual);
_pointLight2.Offset = new Vector3(0, (float)RootElement.ActualHeight * 0.75f, 300);
// Animate Lights - Create expression template
var offsetAnimation = Window.Current.Compositor.CreateVector3KeyFrameAnimation();
offsetAnimation.Target = nameof(PointLight.Offset);
offsetAnimation.InsertExpressionKeyFrame(1.0f, "this.FinalValue");
offsetAnimation.Duration = TimeSpan.FromSeconds(10);
// Animate Lights - create implicit animations
_implicitOffsetAnimation = _compositor.CreateImplicitAnimationCollection();
_implicitOffsetAnimation[nameof(Visual.Offset)] = offsetAnimation;
_pointLight1.ImplicitAnimations = _implicitOffsetAnimation;
_pointLight2.ImplicitAnimations = _implicitOffsetAnimation;
// Animate Lights - create timer
_lightTimer = new DispatcherTimer();
_lightTimer.Interval = TimeSpan.FromSeconds(10);
_lightTimer.Tick += LightTimerOnTick;
_lightTimer.Start();
// AnimateLights - initial move
MoveLights();
// Add Text (RobMikh.SurfaceFactory) Ø
_surfaceFactory = SurfaceFactory.GetSharedSurfaceFactoryForCompositor(_compositor);
_textSurface = _surfaceFactory.CreateTextSurface("Hello Øredev!");
_textSurface.ForegroundColor = Color.FromArgb(50, 255, 255, 255);
_textSurface.FontSize = 150;
var textBrush = _compositor.CreateSurfaceBrush(_textSurface.Surface);
_textVisual = _compositor.CreateSpriteVisual();
_textVisual.Size = _textSurface.Size.ToVector2();
_textVisual.RotationAngleInDegrees = 45f;
_textVisual.AnchorPoint = new Vector2(0.5f);
_textVisual.Brush = textBrush;
_textVisual.StartAnimation(nameof(Visual.Offset), CreateTextAnimation());
_containerVisual.Children.InsertAtTop(_textVisual);
}