private static ICanvasImage CreateColorMatrixEffect(ICanvasImage canvasImage, float coeff)
{
var ef = new ColorMatrixEffect
{
Source = canvasImage
};
var matrix = new Matrix5x4();
matrix.M11 = (float)Math.Sin(coeff * 1.5);
matrix.M21 = (float)Math.Sin(coeff * 1.4);
matrix.M31 = (float)Math.Sin(coeff * 1.3);
matrix.M51 = (1 - matrix.M11 - matrix.M21 - matrix.M31) / 2;
matrix.M12 = (float)Math.Sin(coeff * 1.2);
matrix.M22 = (float)Math.Sin(coeff * 1.1);
matrix.M32 = (float)Math.Sin(coeff * 1.0);
matrix.M52 = (1 - matrix.M12 - matrix.M22 - matrix.M32) / 2;
matrix.M13 = (float)Math.Sin(coeff * 0.9);
matrix.M23 = (float)Math.Sin(coeff * 0.8);
matrix.M33 = (float)Math.Sin(coeff * 0.7);
matrix.M53 = (1 - matrix.M13 - matrix.M23 - matrix.M33) / 2;
matrix.M44 = 1;
ef.ColorMatrix = matrix;
return(ef);
}
async Task canvas_CreateResourcesAsync(CanvasAnimatedControl sender)
{
DissolveEffect = new PixelShaderEffect(await ReadAllBytes("Assets/Shaders/WipeUp.bin"));
//DissolveEffect.Properties["feather"] = 0.1f;
DissolveMask = await CreateRippleEffect();
CanvasSourceImageLarge1 = await CanvasBitmap.LoadAsync(sender, new Uri("ms-appx:///" + "Assets/Images/beautiful-bloom-blooming-blossom-414083.jpg"));
CanvasSourceImageLarge2 = await CanvasBitmap.LoadAsync(sender, new Uri("ms-appx:///" + "Assets/Images/nature-red-forest-leaves-33109.jpg"));
CanvasSourceImageSmall1 = await CanvasBitmap.LoadAsync(sender, new Uri("ms-appx:///" + "Assets/Images/beach-birds-calm-clouds-219998.jpg"));
CanvasSourceImageSmall2 = await CanvasBitmap.LoadAsync(sender, new Uri("ms-appx:///" + "Assets/Images/photography-of-trees-covered-with-snow-773594.jpg"));
try
{
var info = Windows.Graphics.Display.DisplayInformation.GetForCurrentView();
DissolveEffect.Properties["dpi"] = info.LogicalDpi;
DissolveEffect.Properties["height"] = 369f;
//DissolveEffect.Properties["progress"] = (float)ProgressSlider.Value;
DissolveEffect.Source1 = CanvasSourceImageSmall1;
//DissolveEffect.Source2 = CanvasSourceImageSmall2;
}
catch { }
}
private static ICanvasImage CreateGrayscaleEffect(ICanvasImage canvasImage)
{
var ef = new GrayscaleEffect();
ef.Source = canvasImage;
return(ef);
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new InvertEffect
{
Source = image
});
}
public ICanvasImage ApplyFilter(ICanvasImage source)
{
return(new InvertEffect
{
Source = source
});
}
private async void LoadImage1(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
bitmap1 = new SepiaEffect
{
Source = await PickImageAsync()
};
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new GammaTransferEffect
{
ClampOutput = this.ClampOutput,
AlphaDisable = this.AlphaDisable,
AlphaOffset = this.AlphaOffset,
AlphaExponent = this.AlphaExponent,
AlphaAmplitude = this.AlphaAmplitude,
RedDisable = this.RedDisable,
RedOffset = this.RedOffset,
RedExponent = this.RedExponent,
RedAmplitude = this.RedAmplitude,
GreenDisable = this.GreenDisable,
GreenOffset = this.GreenOffset,
GreenExponent = this.GreenExponent,
GreenAmplitude = this.GreenAmplitude,
BlueDisable = this.BlueDisable,
BlueOffset = this.BlueOffset,
BlueExponent = this.BlueExponent,
BlueAmplitude = this.BlueAmplitude,
Source = image
});
}
public static ICanvasImage GetShadow(ICanvasImage canvasImage, float BlurAmount, Color ShadowColor, float X, float Y)
{
if (BlurAmount < 0)
{
BlurAmount = 0;
}
else if (BlurAmount > 100)
{
BlurAmount = 100;
}
return(new CompositeEffect
{
Sources =
{
new Transform2DEffect
{
Source = new ShadowEffect
{
Source = canvasImage,
BlurAmount = BlurAmount,
ShadowColor = ShadowColor,
},
TransformMatrix = Matrix3x2.CreateTranslation(X, Y),
},
canvasImage
}
});
}
//冷暖方法
public static ICanvasImage GetTemperature(ICanvasImage canvasImage, float Temperature, float Tint = 0f)
{
if (Temperature < -1)
{
Temperature = -1;
}
else if (Temperature > 1)
{
Temperature = 1;
}
if (Tint < -1)
{
Tint = -1;
}
else if (Tint > 1)
{
Tint = 1;
}
return(new TemperatureAndTintEffect
{
Source = canvasImage,
Temperature = Temperature,
Tint = Tint,
});
}
//边界算法
public static ICanvasImage GetBorder(ICanvasImage canvasImage, int Border)
{
if (Border == 0)
{
return(canvasImage);
}
else if (Border >= 90)
{
Border = 90;
}
else if (Border <= -90)
{
Border = -90;
}
return(new MorphologyEffect//形态学
{
Source = new BorderEffect {
Source = canvasImage
}, //边界效应
Mode = (Border > 0) ? MorphologyEffectMode.Dilate : MorphologyEffectMode.Erode, //扩张&侵蚀
Height = Math.Abs(Border),
Width = Math.Abs(Border) //地区扩张
});
}
void CreateTurbulence()
{
turbulence = new ColorMatrixEffect
{
Source = new TurbulenceEffect
{
Size = tigerSize,
Frequency = new Vector2(0.02f),
Octaves = 3,
},
// Adjust intensity of the generated turbulence, and copy the red channel over green and blue.
ColorMatrix = new Matrix5x4
{
M11 = 1.8f,
M12 = 1.8f,
M13 = 1.8f,
M51 = -0.4f,
M52 = -0.4f,
M53 = -0.4f,
M54 = 1
}
};
}
public static void Erasing(this CanvasDrawingSession session, ICanvasImage mask, float o = 1)
{
session.DrawImage(
mask, mask.GetBounds(session.Device), mask.GetBounds(session.Device),
o, CanvasImageInterpolation.Linear, CanvasComposite.DestinationOut
);
}
private ICanvasImage image2Premultiply(ICanvasImage aImage)
{
return(new PremultiplyEffect()
{
Source = aImage
});
}
//浮雕方法
public static ICanvasImage GetEmboss(ICanvasImage canvasImage, float Amount, float Angle)
{
if (Amount < 0)
{
Amount = 0;
}
else if (Amount > 10)
{
Amount = 10;
}
if (Angle < 0)
{
Angle = 0;
}
else if (Angle > 2 * (float)(Math.PI))
{
Angle = (float)(2 * Math.PI);
}
return(new EmbossEffect
{
Source = canvasImage,
Amount = Amount,
Angle = Angle,
});
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new GrayscaleEffect
{
Source = image
});
}
public ICanvasImage ApplyFilter(ICanvasImage source)
{
return(new GrayscaleEffect
{
Source = source
});
}
//初始化杂项渲染目标
public static void InitializeOther()
{
//下杂项渲染目标 （从灰白网格到当前图层）
using (CanvasDrawingSession ds = App.Model.SecondBottomRenderTarget.CreateDrawingSession())
{
ICanvasImage ci = App.GrayWhiteGrid; //由下向上渲染的图片接口
for (int i = App.Model.Layers.Count - 1; i >= App.Model.Index; i--) //自下而上渲染
{
ci = App.Render(App.Model.Layers[i], ci); //渲染
}
ds.DrawImage(ci);
}
//上杂项渲染目标 （从当前图层的的上一层到顶层）
using (CanvasDrawingSession ds = App.Model.SecondTopRenderTarget.CreateDrawingSession())
{
ds.Clear(Colors.Transparent);
ICanvasImage ci = App.Model.NullRenderTarget;
//当前图层索引不在0，即并不在第一层
if (App.Model.Index > 0)
{
for (int i = 0; i < App.Model.Index; i++) //自上而下渲染
{
ci = App.Render(App.Model.Layers[i], ci); //渲染
}
ds.DrawImage(ci);
}
}
}
public override ICanvasImage GetRender(ICanvasResourceCreator resourceCreator, Layerage layerage)
{
if (layerage.Children.Count == 0)
{
return(null);
}
ICanvasImage childImage = LayerBase.Render(resourceCreator, layerage);
if (childImage is null)
{
return(null);
}
CanvasCommandList command = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession drawingSession = command.CreateDrawingSession())
{
if (this.Transform.IsCrop)
{
CanvasGeometry geometryCrop = this.Transform.CropTransformer.ToRectangle(resourceCreator);
using (drawingSession.CreateLayer(1, geometryCrop))
{
drawingSession.DrawImage(childImage);
}
}
else
{
drawingSession.DrawImage(childImage);
}
}
return(command);
}
public static ICanvasImage GetTint(ICanvasImage canvasImage, float Opacity, Color Color)
{
if (Opacity < 0)
{
Opacity = 0;
}
else if (Opacity > 1)
{
Opacity = 1;
}
return(new CompositeEffect
{
Sources =
{
canvasImage,
new OpacityEffect
{
Opacity = Opacity,
Source = new TintEffect
{
Source = canvasImage,
Color = Color
}
}
}
});
}
private void Canvas_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (canvas.ReadyToDraw)
{
effect = CreateEffect();
}
}
//Render:When your image has changed, call it
public void Render(ICanvasResourceCreator creator, float scaleX, float scaleY, ICanvasImage image)
{
//Scale :zoom up
ScaleEffect effect = new ScaleEffect
{
Source = image,
Scale = new Vector2(1 / scaleX, 1 / scaleY),
InterpolationMode = CanvasImageInterpolation.NearestNeighbor,
};
//Crop:So that it does not exceed the canvas boundary
Rect rect = effect.GetBounds(creator);
CropEffect effect2 = new CropEffect
{
Source = effect,
SourceRectangle = new Rect(2, 2, rect.Width - 4, rect.Height - 4),
};
//DottedLine
this.OutPut = new LuminanceToAlphaEffect //Alpha
{
Source = new EdgeDetectionEffect //Edge
{
Amount = 1,
Source = effect2
},
};
}
//边缘检测方法
public static ICanvasImage GetEdgeDetection(ICanvasImage canvasImage, float Amount, float BlurAmount = 0, EdgeDetectionEffectMode Mode = EdgeDetectionEffectMode.Sobel, CanvasAlphaMode AlphaMode = CanvasAlphaMode.Premultiplied, bool OverlayEdges = false)
{
if (Amount < 0)
{
Amount = 0;
}
else if (Amount > 1)
{
Amount = 1;
}
if (BlurAmount < 0)
{
BlurAmount = 0;
}
else if (BlurAmount > 10)
{
BlurAmount = 10;
}
return(new EdgeDetectionEffect
{
Source = canvasImage,
Amount = Amount,
BlurAmount = BlurAmount,
Mode = Mode,
AlphaMode = AlphaMode,
OverlayEdges = OverlayEdges,
});
}
static void ValidateCannotDrawImage(CanvasDevice device, ICanvasImage image)
{
ValidateUnsupportedPixelFormatException(() =>
{
ValidateCanDrawImage(device, image);
});
}
//Merge Visual：合并可见
private void LayerMergeVisualButton_Click(object sender, RoutedEventArgs e)
{
App.Model.isCanUndo = false;//关闭撤销
//更新撤销类
Undo undo = new Undo();
undo.CollectionInstantiation(App.Model.Index, App.Model.Layers);
App.UndoAdd(undo);
//新建渲染目标=>层
CanvasRenderTarget crt = new CanvasRenderTarget(App.Model.VirtualControl, App.Model.Width, App.Model.Height);
using (CanvasDrawingSession ds = crt.CreateDrawingSession())
{
ds.Clear(Colors.Transparent);
ICanvasImage ci = App.Model.NullRenderTarget;
for (int i = App.Model.Layers.Count - 1; i >= 0; i--) //自下而上渲染
{
ci = App.Render(App.Model.Layers[i], ci); //渲染
}
ds.DrawImage(ci);
}
//删掉所有可视图层
for (int i = App.Model.Layers.Count - 1; i >= 0; i--)//自下而上
{
Layer L = App.Model.Layers[i];
if (L.Visual == true)
{
App.Model.Layers.Remove(L);
}
}
//插入与索引
Layer l = new Layer {
Name = App.resourceLoader.GetString("/Layer/NameMerge_"), Visual = true, Opacity = 100, CanvasRenderTarget = crt,
};
if (App.Model.isLowView)
{
l.LowView();
}
else
{
l.SquareView();
}
l.SetWriteableBitmap(App.Model.VirtualControl);//刷新缩略图
App.Model.Layers.Insert(0, l);
App.Model.Index = 0;
App.Model.isCanUndo = true; //打开撤销
App.Model.LayersCount = App.Model.Layers.Count; //Undo：撤销
Jugde(); //判断
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new ColorMatrixEffect
{
Source = image,
ColorMatrix = AdjustmentExtensions.GetColorMatching(this.SourceColor, this.DestinationColor)
});
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new SaturationEffect
{
Saturation = this.Saturation,
Source = image
});
}
protected override void DrawModification(ref ICanvasImage bitmap, CanvasDrawingSession draw)
{
base.DrawModification(ref bitmap, draw);
//Rotates the player in the direction where he is moving
//(this is implemented automatically within a list in the AbstractActor)
//RotationStrategy.DrawModification(ref bitmap, draw);
}
public void Dispose()
{
_cl?.Dispose();
_cl = null;
shadow?.Dispose();
shadow = null;
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new HueRotationEffect
{
Angle = this.Angle,
Source = image
});
}
public void Setup(ICanvasImage canvas, double amount = 10)
{
morphology.Source = canvas;
amount = Math.Min(amount / 2, 100);
morphology.Width = (int)Math.Truncate(Math.Floor(amount));
morphology.Height = (int)Math.Truncate(Math.Floor(amount));
Blur.BlurAmount = (float)amount;
}
public ICanvasImage GetRender(ICanvasImage image)
{
return(new ExposureEffect
{
Exposure = this.Exposure,
Source = image
});
}
public void Dispose()
{
_cl?.Dispose();
_cl = null;
morphology?.Dispose();
morphology = null;
blur?.Dispose();
blur = null;
}
public void Setup(ICanvasImage source, float amount)
{
morphology.Source = source;
var halfAmount = Math.Min(amount / 2, 100);
morphology.Width = (int)Math.Ceiling(halfAmount);
morphology.Height = (int)Math.Ceiling(halfAmount);
blur.BlurAmount = halfAmount;
}
private void _setup(ICanvasImage source, float amount, Color shadowColor)
{
if (_cl != null) { _cl.Dispose(); _cl = null; }
_cl = source;
shadow.Source = _cl;
shadow.BlurAmount = amount;
shadow.ShadowColor = shadowColor;
}
private void _setup(ICanvasImage source, float amount)
{
if (amount == 0) return;
if (_cl != null) { _cl.Dispose(); _cl = null; }
_cl = source;
morphology.Source = _cl;
var halfAmount = Math.Min(amount / 2, 100);
morphology.Width = (int)Math.Ceiling(halfAmount);
morphology.Height = (int)Math.Ceiling(halfAmount);
blur.BlurAmount = halfAmount;
}
public ICanvasImage Cache(Photo photo, ICanvasImage image, params object[] keys)
{
if (cachedImage == null)
{
cachedImage = new CanvasRenderTarget(photo.SourceBitmap.Device, photo.Size.X, photo.Size.Y, 96);
}
using (var drawingSession = cachedImage.CreateDrawingSession())
{
drawingSession.Blend = CanvasBlend.Copy;
drawingSession.DrawImage(image);
}
isCacheValid = true;
cacheKeys = keys;
return cachedImage;
}
async Task LoadBitmaps(CanvasControl sender)
{
var bitmapType = CurrentBitmapType;
var bitmapSource = CurrentBitmapSource;
var newTestBitmaps = new ICanvasImage[fileNames.Length];
for (int i = 0; i < fileNames.Length; i++)
{
Package package = Package.Current;
StorageFolder installedLocation = package.InstalledLocation;
string pathName = installedLocation.Path + "\\" + "BitmapOrientation" + "\\" + fileNames[i];
if (bitmapSource == BitmapSourceOption.FromStream)
{
StorageFile storageFile = await StorageFile.GetFileFromPathAsync(pathName);
using (IRandomAccessStreamWithContentType stream = await storageFile.OpenReadAsync())
{
if (bitmapType == BitmapType.CanvasBitmap)
newTestBitmaps[i] = await CanvasBitmap.LoadAsync(sender, stream);
#if WINDOWS_UWP
else
newTestBitmaps[i] = await CanvasVirtualBitmap.LoadAsync(sender, stream);
#endif
}
}
else
{
if (bitmapType == BitmapType.CanvasBitmap)
newTestBitmaps[i] = await CanvasBitmap.LoadAsync(sender, pathName);
#if WINDOWS_UWP
else
newTestBitmaps[i] = await CanvasVirtualBitmap.LoadAsync(sender, pathName);
#endif
}
}
testBitmaps = newTestBitmaps;
}
private ICanvasImage CombineDiffuseAndSpecular(ICanvasImage diffuse, ICanvasImage specular, float x, float y)
{
var composite = new ArithmeticCompositeEffect
{
Source1 = new ArithmeticCompositeEffect
{
Source1 = bitmapTiger,
Source2 = diffuse,
Source1Amount = 0,
Source2Amount = 0,
MultiplyAmount = 1,
},
Source2 = specular,
Source1Amount = 1,
Source2Amount = 1,
MultiplyAmount = 0,
};
return AddTextOverlay(composite, x, y);
}
private ICanvasImage AddTextOverlay(ICanvasImage effect, float x, float y)
{
var textOverlay = new CanvasRenderTarget(canvas, 200, 30);
using (var ds = textOverlay.CreateDrawingSession())
{
ds.Clear(Color.FromArgb(0, 0, 0, 0));
ds.DrawText(effect.GetType().Name.Replace("Effect", ""), 0, 0, Colors.White);
}
return new Transform2DEffect
{
Source = new BlendEffect
{
Background = effect,
Foreground = textOverlay,
Mode = BlendEffectMode.Screen
},
TransformMatrix = Matrix3x2.CreateTranslation(x, y)
};
}
private void CreateEffect(bool resetTime = true)
{
if (resetTime)
{
timer = Stopwatch.StartNew();
}
currentEffectSize = bitmapTiger.Size.ToVector2();
textLabel = null;
switch (CurrentEffect)
{
case EffectType.ArithmeticComposite:
effect = CreateArithmeticComposite();
break;
case EffectType.Blend:
effect = CreateBlend();
break;
case EffectType.Border:
effect = CreateBorder();
break;
case EffectType.Brightness:
effect = CreateBrightness();
break;
case EffectType.ColorMatrix:
effect = CreateColorMatrix();
break;
case EffectType.Composite:
effect = CreateComposite();
break;
case EffectType.ConvolveMatrix:
effect = CreateConvolveMatrix();
break;
case EffectType.Crop:
effect = CreateCrop();
break;
case EffectType.DirectionalBlur:
effect = CreateDirectionalBlur();
break;
case EffectType.DiscreteTransfer:
effect = CreateDiscreteTransfer();
break;
case EffectType.DisplacementMap:
effect = CreateDisplacementMap();
break;
case EffectType.GaussianBlur:
effect = CreateGaussianBlur();
break;
case EffectType.HueRotation:
effect = CreateHueRotation();
break;
case EffectType.Lighting:
effect = CreateLighting();
break;
case EffectType.LuminanceToAlpha:
effect = CreateLuminanceToAlpha();
break;
case EffectType.Morphology:
effect = CreateMorphology();
break;
case EffectType.Saturation:
effect = CreateSaturation();
break;
case EffectType.Shadow:
effect = CreateShadow();
break;
case EffectType.Tile:
effect = CreateTile();
break;
case EffectType.Transform3D:
effect = CreateTransform3D();
break;
#if WINDOWS_UWP
// The following effects are new in the Universal Windows Platform.
// They are not supported on Windows 8.1 or Phone 8.1.";
case EffectType.ChromaKey:
effect = CreateChromaKey();
break;
case EffectType.Contrast:
effect = CreateContrast();
break;
case EffectType.EdgeDetection:
effect = CreateEdgeDetection();
break;
case EffectType.Emboss:
effect = CreateEmboss();
break;
case EffectType.Exposure:
effect = CreateExposure();
break;
case EffectType.Grayscale:
effect = CreateGrayscale();
break;
case EffectType.HighlightsAndShadows:
effect = CreateHighlightsAndShadows();
break;
case EffectType.Invert:
effect = CreateInvert();
break;
case EffectType.Posterize:
effect = CreatePosterize();
break;
case EffectType.RgbToHue:
effect = CreateRgbToHue();
break;
case EffectType.Sepia:
effect = CreateSepia();
break;
case EffectType.Sharpen:
effect = CreateSharpen();
break;
case EffectType.Straighten:
effect = CreateStraighten();
break;
case EffectType.TemperatureAndTint:
effect = CreateTemperatureAndTint();
break;
case EffectType.Vignette:
effect = CreateVignette();
break;
#endif // WINDOWS_UWP
default:
throw new NotSupportedException();
}
activeEffectNames = GetActiveEffectNames();
}
public static void DrawImage(this CanvasDrawingSession session, ICanvasImage image, float opacity)
{
var rect = image.GetBounds(session);
session.DrawImage(image, rect, rect, opacity);
}
private ICanvasImage AddSoftEdgedCrop(ICanvasImage effect)
{
var size = bitmapTiger.Size;
var softEdge = new GaussianBlurEffect
{
Source = new CropEffect
{
Source = new ColorSourceEffect { Color = Colors.Black },
SourceRectangle = new Rect(-size.Width / 2, -size.Height / 2, size.Width * 2, size.Height * 2)
},
BlurAmount = 32
};
return new CompositeEffect
{
Sources = { softEdge, effect },
Mode = CanvasComposite.SourceIn
};
}
static void ValidateCanDrawImage(CanvasDevice device, ICanvasImage image)
{
using (var commandList = new CanvasCommandList(device))
using (var drawingSession = commandList.CreateDrawingSession())
{
drawingSession.DrawImage(image);
}
}
public ICanvasImage Apply(ICanvasImage image, ref Rect? bounds)
{
if (!IsEnabled)
return image;
var metadata = EffectMetadata.Get(type);
// Instantiate the effect.
var effect = (ICanvasImage)Activator.CreateInstance(metadata.ImplementationType);
// Set the effect input.
SetProperty(effect, "Source", image);
// Set configurable parameter values.
foreach (var parameter in metadata.Parameters)
{
var value = GetParameter(parameter);
SetProperty(effect, parameter.Name, value);
// Track the image bounds if cropping changes them.
if (this.Type == EffectType.Crop && parameter.Name == "SourceRectangle")
{
bounds = bounds.HasValue ? RectHelper.Intersect(bounds.Value, (Rect)value) : (Rect)value;
}
}
// Set any constant values.
foreach (var constant in metadata.Constants)
{
SetProperty(effect, constant.Key, constant.Value);
}
return effect;
}
async Task CreateResourcesAsync(CanvasControl sender)
{
bitmap = await CanvasBitmap.LoadAsync(sender, (this.DataContext as PodcastDetailsViewModel).Podcast.Podcast.ImageUrl);
effect = CreateEffect();
}
public void Setup(ICanvasImage source, params dynamic[] args)
{
_setup(source, args[0]);
}
private ICanvasImage image2Premultiply(ICanvasImage aImage)
{
return new PremultiplyEffect()
{
Source = aImage
};
}
void CreateTurbulence()
{
turbulence = new LinearTransferEffect
{
Source = new TurbulenceEffect
{
Size = bitmapSize,
Frequency = new Vector2(0.02f),
Octaves = 3,
},
RedSlope = 2,
RedOffset = -0.2f,
};
}
ICanvasImage GetSelectionBorder(ICanvasImage mask, float zoomFactor)
{
// Scale so our border will always be the same width no matter how the image is zoomed.
var scaleToCurrentZoom = new ScaleEffect
{
Source = mask,
Scale = new Vector2(zoomFactor)
};
// Find edges of the selection.
var detectEdges = new EdgeDetectionEffect
{
Source = scaleToCurrentZoom,
Amount = 0.1f
};
// Colorize.
var colorItMagenta = new ColorMatrixEffect
{
Source = detectEdges,
ColorMatrix = new Matrix5x4
{
M11 = 1,
M13 = 1,
M14 = 1,
}
};
// Scale back to the original size.
return new ScaleEffect
{
Source = colorItMagenta,
Scale = new Vector2(1 / zoomFactor)
};
}
void CreateTurbulence()
{
turbulence = new ColorMatrixEffect
{
Source = new TurbulenceEffect
{
Size = tigerSize,
Frequency = new Vector2(0.02f),
Octaves = 3,
},
// Adjust intensity of the generated turbulence, and copy the red channel over green and blue.
ColorMatrix = new Matrix5x4
{
M11 = 1.8f,
M12 = 1.8f,
M13 = 1.8f,
M51 = -0.4f,
M52 = -0.4f,
M53 = -0.4f,
M54 = 1
}
};
}
static void ValidateCannotDrawImage(CanvasDevice device, ICanvasImage image)
{
ValidateUnsupportedPixelFormatException(() =>
{
ValidateCanDrawImage(device, image);
});
}
public ICanvasImage Apply(ICanvasImage image)
{
if (IsEnabled)
{
var originalImage = image;
Rect? bounds = null;
// Apply all our effects in turn.
foreach (var effect in Effects)
{
image = effect.Apply(image, ref bounds);
}
// Mask so these effects only alter a specific region of the image?
if (regionMask != null)
{
var selectedRegion = new CompositeEffect
{
Sources = { image, GetRegionMask() },
Mode = CanvasComposite.DestinationIn
};
image = new CompositeEffect
{
Sources = { originalImage, selectedRegion }
};
if (bounds.HasValue)
{
image = new CropEffect
{
Source = image,
SourceRectangle = bounds.Value
};
}
}
}
return image;
}
public RainyDay(CanvasAnimatedControl _canvas, float _width, float _height, ICanvasImage _img)
{
random = new Random();
//prepare width and height of region
width = _width;
height = _height;
//prepare imgReflected
img = _img;
//prepare drops
drops = new List<Drop>();
// assume defaults
// trail = Trail_Drops;
CurrentGravity = GravityType.Gravity_Linear;
collision = Collision_Sample;
reflection = Reflection_Miniature;
}