//Fog：迷雾
private void FogButton_Tapped(object sender, TappedRoutedEventArgs e)
{
flyout.Hide();
Layer l = App.Model.Layers[App.Model.Index];
//如果图层不可视或透明
if (l.Visual == false || l.Opacity <= 0)
{
App.Tip(App.resourceLoader.GetString("/Layer/Hided_"));
}
else
{
//Undo：撤销
Undo undo = new Undo();
undo.TargeInstantiation(App.Model.Index, App.Model.CurrentRenderTarget);
App.UndoAdd(undo);
ICanvasImage ic = new TurbulenceEffect
{
Octaves = 4,
Size = new Vector2(App.Model.Width, App.Model.Height)
};
using (CanvasDrawingSession ds = l.CanvasRenderTarget.CreateDrawingSession())
{
ds.DrawImage(ic, 0, 0, App.Model.MaskRenderTarget.Bounds, 1, CanvasImageInterpolation.Linear, CanvasComposite.DestinationOut);//绘画：特效渲染目标
}
l.SetWriteableBitmap(App.Model.VirtualControl); //刷新缩略图
App.Model.isReRender = true; //重新渲染
App.Model.Refresh++; //画布刷新
}
}
private void Page_Loaded(object sender, RoutedEventArgs e)
{
turbulence = new TurbulenceEffect //柏林噪波
{
Octaves = 8,
Size = new Vector2(App.Model.Width, App.Model.Height),
};
Slider.Value = App.Setting.GlassAmount;
NumberPicker.Value = (int)App.Setting.GlassAmount;
Slider.ValueChanged += Slider_ValueChanged;
NumberPicker.ValueChange += NumberPicker_ValueChange;
Render();
}