protected override void OnPaintSurface(SKPaintSurfaceEventArgs e)
{
base.OnPaintSurface(e);
var info = e.Info;
var canvas = e.Surface.Canvas;
canvas.Clear(SKColors.White);
using (var paint = new SKPaint())
{
var topBottom = SKShader.CreateLinearGradient(
new SKPoint(0, 0),
new SKPoint(0, GridSize),
new[] { _color1, _color1, _color2, _color2 },
new[] { 0f, 0.5f, 0.5f, 1f },
SKShaderTileMode.Repeat);
var leftRight = SKShader.CreateLinearGradient(
new SKPoint(0, 0),
new SKPoint(GridSize, 0),
new[] { _color1, _color1, _color2, _color2 },
new[] { 0f, 0.5f, 0.5f, 1f },
SKShaderTileMode.Repeat);
var shader = SKShader.CreateCompose(topBottom, leftRight, SKBlendMode.Xor);
paint.Shader = shader;
canvas.DrawRect(0, 0, info.Width, info.Height, paint);
}
}
/// <summary>
/// Draw a textured background
/// </summary>
/// <param name="backgroundColor">the backgroud color</param>
/// <param name="canvas">the canvas</param>
/// <param name="bounds">the bounds</param>
public static void DrawBackground(Color backgroundColor, SKCanvas canvas, SKRect bounds)
{
if (canvas == null)
{
throw new ArgumentNullException(nameof(canvas));
}
using var bitmap = new SKBitmap(128, 128);
using (var bitmapCanvas = new SKCanvas(bitmap))
{
//bitmapCanvas.Clear(backgroundColor.ToSKColor());
using var colorShader = SKShader.CreateColor(backgroundColor.ToSKColor());
using var perlinShader = SKShader.CreatePerlinNoiseFractalNoise(0.8f, 0.8f, 1, 1, new SKPointI(64, 64));
using var paint = new SKPaint
{
Color = backgroundColor.ToSKColor(),
Shader = SKShader.CreateCompose(colorShader, perlinShader),
IsAntialias = true,
IsStroke = false
};
bitmapCanvas.DrawRect(new SKRect(0, 0, 128, 128), paint);
}
using var paint2 = new SKPaint
{
Shader = SKShader.CreateBitmap(bitmap, SKShaderTileMode.Repeat, SKShaderTileMode.Repeat),
IsStroke = false,
IsAntialias = true
};
canvas.Clear(Color.Transparent.ToSKColor());
canvas.DrawRect(bounds, paint2);
}
public void Render(IDrawingContextImpl context)
{
var canvas = (context as ISkiaDrawingContextImpl)?.SkCanvas;
if (canvas == null)
{
using (var c = new DrawingContext(context, false))
{
c.DrawText(_noSkia, new Point());
}
}
else
{
canvas.Save();
// create the first shader
var colors = new SKColor[] {
new SKColor(0, 255, 255),
new SKColor(255, 0, 255),
new SKColor(255, 255, 0),
new SKColor(0, 255, 255)
};
var sx = Animate(100, 2, 10);
var sy = Animate(1000, 5, 15);
var lightPosition = new SKPoint(
(float)(Bounds.Width / 2 + Math.Cos(St.Elapsed.TotalSeconds) * Bounds.Width / 4),
(float)(Bounds.Height / 2 + Math.Sin(St.Elapsed.TotalSeconds) * Bounds.Height / 4));
using (var sweep =
SKShader.CreateSweepGradient(new SKPoint((int)Bounds.Width / 2, (int)Bounds.Height / 2), colors,
null))
using (var turbulence = SKShader.CreatePerlinNoiseFractalNoise(0.05f, 0.05f, 4, 0))
using (var shader = SKShader.CreateCompose(sweep, turbulence, SKBlendMode.SrcATop))
using (var blur = SKImageFilter.CreateBlur(Animate(100, 2, 10), Animate(100, 5, 15)))
using (var paint = new SKPaint
{
Shader = shader,
ImageFilter = blur
})
canvas.DrawPaint(paint);
using (var pseudoLight = SKShader.CreateRadialGradient(
lightPosition,
(float)(Bounds.Width / 3),
new [] {
new SKColor(255, 200, 200, 100),
SKColors.Transparent,
new SKColor(40, 40, 40, 220),
new SKColor(20, 20, 20, (byte)Animate(100, 200, 220))
},
new float[] { 0.3f, 0.3f, 0.8f, 1 },
SKShaderTileMode.Clamp))
using (var paint = new SKPaint
{
Shader = pseudoLight
})
canvas.DrawPaint(paint);
canvas.Restore();
}
}
public async ValueTask <IActionResult> GetShaderAsync(int size, string topic = null)
{
int center = size / 2;
var colors = new SKColor[] { new SKColor(0, 255, 90), new SKColor(50, 0, 255), new SKColor(255, 255, 0), new SKColor(0, 255, 255) };
using (var sweep = SKShader.CreateSweepGradient(new SKPoint(center, center), colors, null))
using (var turbulence = SKShader.CreatePerlinNoiseTurbulence(0.02f, 0.02f, size / 100, 0))
using (var shader = SKShader.CreateCompose(sweep, turbulence))
{
var response = await GetWithFilterAsync(size, topic, shader : shader);
return(response);
}
}
protected void DrawArea(SKCanvas canvas, SKPoint[] points, SKSize itemSize, float origin)
{
if (LineAreaAlpha > 0 && points.Length > 1)
{
using (var paint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.White,
IsAntialias = true,
})
{
using (var shaderX = CreateXGradient(points, (byte)(LineAreaAlpha * AnimationProgress)))
using (var shaderY = CreateYGradient(points, (byte)(LineAreaAlpha * AnimationProgress)))
{
paint.Shader = EnableYFadeOutGradient ? SKShader.CreateCompose(shaderY, shaderX, SKBlendMode.SrcOut) : shaderX;
var path = new SKPath();
path.MoveTo(points.First().X, origin);
path.LineTo(points.First());
var last = (LineMode == LineMode.Spline) ? points.Length - 1 : points.Length;
for (int i = 0; i < last; i++)
{
var entry = Entries.ElementAt(i);
if (LineMode == LineMode.Spline)
{
var nextEntry = Entries.ElementAt(i + 1);
var cubicInfo = CalculateCubicInfo(points, i, itemSize);
path.CubicTo(cubicInfo.control, cubicInfo.nextControl, cubicInfo.nextPoint);
}
else if (LineMode == LineMode.Straight)
{
if (!entry.Value.HasValue)
{
continue;
}
path.LineTo(points[i]);
}
}
path.LineTo(points.Last().X, origin);
path.Close();
canvas.DrawPath(path, paint);
}
}
}
}
public override void Paint(SKSurface surface, SKImageInfo info)
{
var canvas = surface.Canvas;
var colors = new SKColor[] { new SKColor(0, 255, 255), new SKColor(255, 0, 255), new SKColor(255, 255, 0), new SKColor(0, 255, 255) };
var sweep = SKShader.CreateSweepGradient(new SKPoint((int)(info.Width * Parameter), (int)(info.Height * Parameter)), colors, null);
var turbulence = SKShader.CreatePerlinNoiseTurbulence(0.05f, 0.05f, 4, 0);
var shader = SKShader.CreateCompose(sweep, turbulence);
var paint = new SKPaint()
{
Shader = shader
};
canvas.DrawPaint(paint);
}
protected override void OnDrawSample(SKCanvas canvas, int width, int height)
{
var colors = new[] { SKColors.Blue, SKColors.Yellow };
var center = new SKPoint(width / 2f, height / 2f);
using (var shader1 = SKShader.CreateRadialGradient(center, 180.0f, colors, null, SKShaderTileMode.Clamp))
using (var shader2 = SKShader.CreatePerlinNoiseTurbulence(0.025f, 0.025f, 2, 0.0f))
using (var shader = SKShader.CreateCompose(shader1, shader2))
using (var paint = new SKPaint())
{
paint.Shader = shader;
canvas.DrawPaint(paint);
}
}
internal PaintWrapper CreateAcrylicPaint(SKPaint paint, IExperimentalAcrylicMaterial material, bool disposePaint = false)
{
var paintWrapper = new PaintWrapper(paint, disposePaint);
paint.IsAntialias = true;
double opacity = _currentOpacity;
var tintOpacity =
material.BackgroundSource == AcrylicBackgroundSource.Digger ?
material.TintOpacity : 1;
const double noiseOpcity = 0.0225;
var tintColor = material.TintColor;
var tint = new SKColor(tintColor.R, tintColor.G, tintColor.B, tintColor.A);
if (s_acrylicNoiseShader == null)
{
using (var stream = typeof(DrawingContextImpl).Assembly.GetManifestResourceStream("Avalonia.Skia.Assets.NoiseAsset_256X256_PNG.png"))
using (var bitmap = SKBitmap.Decode(stream))
{
s_acrylicNoiseShader = SKShader.CreateBitmap(bitmap, SKShaderTileMode.Repeat, SKShaderTileMode.Repeat)
.WithColorFilter(CreateAlphaColorFilter(noiseOpcity));
}
}
using (var backdrop = SKShader.CreateColor(new SKColor(material.MaterialColor.R, material.MaterialColor.G, material.MaterialColor.B, material.MaterialColor.A)))
using (var tintShader = SKShader.CreateColor(tint))
using (var effectiveTint = SKShader.CreateCompose(backdrop, tintShader))
using (var compose = SKShader.CreateCompose(effectiveTint, s_acrylicNoiseShader))
{
paint.Shader = compose;
if (material.BackgroundSource == AcrylicBackgroundSource.Digger)
{
paint.BlendMode = SKBlendMode.Src;
}
return(paintWrapper);
}
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
// Get values from sliders and stepper
float baseFreqX = (float)Math.Pow(10, baseFrequencyXSlider.Value - 4);
baseFrequencyXText.Text = String.Format("Base Frequency X = {0:F4}", baseFreqX);
float baseFreqY = (float)Math.Pow(10, baseFrequencyYSlider.Value - 4);
baseFrequencyYText.Text = String.Format("Base Frequency Y = {0:F4}", baseFreqY);
int numOctaves = (int)octavesStepper.Value;
using (SKPaint paint = new SKPaint())
{
paint.Shader = SKShader.CreateCompose(
SKShader.CreateColor(SKColors.Blue),
SKShader.CreatePerlinNoiseFractalNoise(baseFreqX,
baseFreqY,
numOctaves,
0));
SKRect rect = new SKRect(0, 0, info.Width, info.Height / 2);
canvas.DrawRect(rect, paint);
paint.Shader = SKShader.CreateCompose(
SKShader.CreateColor(SKColors.Blue),
SKShader.CreatePerlinNoiseTurbulence(baseFreqX,
baseFreqY,
numOctaves,
0));
rect = new SKRect(0, info.Height / 2, info.Width, info.Height);
canvas.DrawRect(rect, paint);
}
}
public static Tuple <SKPaint, IEnumerable <IDisposable> > CreatePaint(this XInkStroke stroke, SKPaintStyle paintStyle = SKPaintStyle.Stroke, SKBlendMode blendMode = SKBlendMode.SrcATop)
{
if (stroke == null)
{
throw new ArgumentNullException(nameof(stroke));
}
var disposables = new List <IDisposable>();
SKShader shader = null;
if (stroke.DrawingAttributes.Kind == XInkDrawingAttributesKind.Pencil)
{
var perlin = SKShader.CreatePerlinNoiseFractalNoise(0.01f, 0.01f, 1, 1.0f);
var color = SKShader.CreateColor(stroke.DrawingAttributes.Color.ToSKColor().WithAlpha(0x7F));
disposables.Add(perlin);
disposables.Add(color);
shader = SKShader.CreateCompose(
perlin,
color,
blendMode);
}
Tuple <SKPaint, IEnumerable <IDisposable> > tuple = null;
SKPaint paint = null;
if (!stroke.DrawingAttributes.IgnorePressure)
{
paintStyle = SKPaintStyle.Fill;
}
try
{
paint = new SKPaint
{
Color = stroke.DrawingAttributes.Kind == XInkDrawingAttributesKind.Default ? stroke.DrawingAttributes.Color.ToSKColor() : new SKColor(),
StrokeWidth = stroke.DrawingAttributes.IgnorePressure? stroke.DrawingAttributes.Size : 0.0f,
Style = paintStyle,
IsAntialias = true,
StrokeCap = stroke.DrawingAttributes.PenTip == Inking.XPenTipShape.Circle ? SKStrokeCap.Round : SKStrokeCap.Butt,
PathEffect = SKPathEffect.CreateCorner(100)
};
if (shader != null)
{
paint.Shader = shader;
}
tuple = Tuple.Create(paint, disposables as IEnumerable <IDisposable>);
paint = null;
}
finally
{
paint?.Dispose();
}
return(tuple);
}
/// <summary>
/// Configure paint wrapper for using gradient brush.
/// </summary>
/// <param name="paintWrapper">Paint wrapper.</param>
/// <param name="targetSize">Target size.</param>
/// <param name="gradientBrush">Gradient brush.</param>
private void ConfigureGradientBrush(ref PaintWrapper paintWrapper, Size targetSize, IGradientBrush gradientBrush)
{
var tileMode = gradientBrush.SpreadMethod.ToSKShaderTileMode();
var stopColors = gradientBrush.GradientStops.Select(s => s.Color.ToSKColor()).ToArray();
var stopOffsets = gradientBrush.GradientStops.Select(s => (float)s.Offset).ToArray();
switch (gradientBrush)
{
case ILinearGradientBrush linearGradient:
{
var start = linearGradient.StartPoint.ToPixels(targetSize).ToSKPoint();
var end = linearGradient.EndPoint.ToPixels(targetSize).ToSKPoint();
// would be nice to cache these shaders possibly?
using (var shader =
SKShader.CreateLinearGradient(start, end, stopColors, stopOffsets, tileMode))
{
paintWrapper.Paint.Shader = shader;
}
break;
}
case IRadialGradientBrush radialGradient:
{
var center = radialGradient.Center.ToPixels(targetSize).ToSKPoint();
var radius = (float)(radialGradient.Radius * targetSize.Width);
var origin = radialGradient.GradientOrigin.ToPixels(targetSize).ToSKPoint();
if (origin.Equals(center))
{
// when the origin is the same as the center the Skia RadialGradient acts the same as D2D
using (var shader =
SKShader.CreateRadialGradient(center, radius, stopColors, stopOffsets, tileMode))
{
paintWrapper.Paint.Shader = shader;
}
}
else
{
// when the origin is different to the center use a two point ConicalGradient to match the behaviour of D2D
// reverse the order of the stops to match D2D
var reversedColors = new SKColor[stopColors.Length];
Array.Copy(stopColors, reversedColors, stopColors.Length);
Array.Reverse(reversedColors);
// and then reverse the reference point of the stops
var reversedStops = new float[stopOffsets.Length];
for (var i = 0; i < stopOffsets.Length; i++)
{
reversedStops[i] = stopOffsets[i];
if (reversedStops[i] > 0 && reversedStops[i] < 1)
{
reversedStops[i] = Math.Abs(1 - stopOffsets[i]);
}
}
// compose with a background colour of the final stop to match D2D's behaviour of filling with the final color
using (var shader = SKShader.CreateCompose(
SKShader.CreateColor(reversedColors[0]),
SKShader.CreateTwoPointConicalGradient(center, radius, origin, 0, reversedColors, reversedStops, tileMode)
))
{
paintWrapper.Paint.Shader = shader;
}
}
break;
}
case IConicGradientBrush conicGradient:
{
var center = conicGradient.Center.ToPixels(targetSize).ToSKPoint();
// Skia's default is that angle 0 is from the right hand side of the center point
// but we are matching CSS where the vertical point above the center is 0.
var angle = (float)(conicGradient.Angle - 90);
var rotation = SKMatrix.CreateRotationDegrees(angle, center.X, center.Y);
using (var shader =
SKShader.CreateSweepGradient(center, stopColors, stopOffsets, rotation))
{
paintWrapper.Paint.Shader = shader;
}
break;
}
}
}
private void DrawLineArea(SKCanvas canvas, ChartSerie serie, SKPoint[] points, SKSize itemSize, float origin)
{
if (LineAreaAlpha > 0 && points.Length > 1)
{
using (var paint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.White,
IsAntialias = true,
})
{
using (var shaderX = CreateXGradient(points, serie.Entries, serie.Color, (byte)(LineAreaAlpha * AnimationProgress)))
using (var shaderY = CreateYGradient(points, (byte)(LineAreaAlpha * AnimationProgress)))
{
paint.Shader = EnableYFadeOutGradient ? SKShader.CreateCompose(shaderY, shaderX, SKBlendMode.SrcOut) : shaderX;
var path = new SKPath();
var isFirst = true;
var entries = serie.Entries;
var lineMode = LineMode;
var last = (lineMode == LineMode.Spline) ? points.Length - 1 : points.Length;
SKPoint lastPoint = points.First();
for (int i = 0; i < last; i++)
{
if (!entries.ElementAt(i).Value.HasValue)
{
continue;
}
if (isFirst)
{
path.MoveTo(points[i].X, origin);
path.LineTo(points[i]);
isFirst = false;
}
if (lineMode == LineMode.Spline)
{
int next = i + 1;
while (next < last && !entries.ElementAt(next).Value.HasValue)
{
next++;
}
if (next == last && !entries.ElementAt(next).Value.HasValue)
{
lastPoint = points[i];
break;
}
var cubicInfo = CalculateCubicInfo(points, i, next, itemSize);
path.CubicTo(cubicInfo.control, cubicInfo.nextControl, cubicInfo.nextPoint);
lastPoint = cubicInfo.nextPoint;
}
else if (lineMode == LineMode.Straight)
{
path.LineTo(points[i]);
lastPoint = points[i];
}
}
path.LineTo(lastPoint.X, origin);
path.Close();
canvas.DrawPath(path, paint);
}
}
}
}
protected void DrawArea(SKCanvas canvas, SKPoint[] points, SKSize itemSize, float origin, IEnumerable <ChartEntry> entries, SKPoint[] pointsTo = null)
{
if (this.LineAreaAlpha > 0 && points.Length > 1)
{
using (var paint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.White,
IsAntialias = true,
})
{
using (var shaderX = this.CreateXGradient(points, entries, (byte)(this.LineAreaAlpha * this.AnimationProgress)))
using (var shaderY = this.CreateYGradient(points, (byte)(this.LineAreaAlpha * this.AnimationProgress)))
{
paint.Shader = EnableYFadeOutGradient ? SKShader.CreateCompose(shaderY, shaderX, SKBlendMode.SrcOut) : shaderX;
var path = new SKPath();
var initialY = origin;
var finishY = origin;
if (pointsTo != null)
{
initialY = pointsTo.First().Y;
finishY = pointsTo.Last().Y;
}
path.MoveTo(points.First().X, initialY);
path.LineTo(points.First());
var last = (this.LineMode == LineMode.Spline) ? points.Length - 1 : points.Length;
for (int i = 0; i < last; i++)
{
if (this.LineMode == LineMode.Spline)
{
var cubicInfo = this.CalculateCubicInfo(points, i, itemSize);
path.CubicTo(cubicInfo.control, cubicInfo.nextControl, cubicInfo.nextPoint);
}
else if (this.LineMode == LineMode.Straight)
{
path.LineTo(points[i]);
}
}
if (pointsTo != null)
{
var first = 0;
if (LineMode == LineMode.Spline)
{
path.LineTo(pointsTo.Last());
first = 1;
}
for (int i = pointsTo.Length - 1; i >= first; i--)
{
if (this.LineMode == LineMode.Spline)
{
var cubicInfo = this.CalculateReverseCubicInfo(pointsTo, i, itemSize);
path.CubicTo(cubicInfo.control, cubicInfo.previousControl, cubicInfo.previousPoint);
}
else if (this.LineMode == LineMode.Straight)
{
path.LineTo(pointsTo[i]);
}
}
}
path.LineTo(points.Last().X, finishY);
path.Close();
canvas.DrawPath(path, paint);
}
}
}
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
float x = (info.Width - monkeyBitmap.Width) / 2;
float y = info.Height - monkeyBitmap.Height;
// Draw monkey bitmap
if (step >= 1)
{
canvas.DrawBitmap(monkeyBitmap, x, y);
}
// Draw matte to exclude monkey's surroundings
if (step >= 2)
{
using (SKPaint paint = new SKPaint())
{
paint.BlendMode = SKBlendMode.DstIn;
canvas.DrawBitmap(matteBitmap, x, y, paint);
}
}
const float sidewalkHeight = 80;
SKRect rect = new SKRect(info.Rect.Left, info.Rect.Bottom - sidewalkHeight,
info.Rect.Right, info.Rect.Bottom);
// Draw gravel sidewalk for monkey to sit on
if (step >= 3)
{
using (SKPaint paint = new SKPaint())
{
paint.Shader = SKShader.CreateCompose(
SKShader.CreateColor(SKColors.SandyBrown),
SKShader.CreatePerlinNoiseTurbulence(0.1f, 0.3f, 1, 9));
paint.BlendMode = SKBlendMode.DstOver;
canvas.DrawRect(rect, paint);
}
}
// Draw bitmap tiled brick wall behind monkey
if (step >= 4)
{
using (SKPaint paint = new SKPaint())
{
SKBitmap bitmap = BrickWallTile;
float yAdjust = (info.Height - sidewalkHeight) % bitmap.Height;
paint.Shader = SKShader.CreateBitmap(bitmap,
SKShaderTileMode.Repeat,
SKShaderTileMode.Repeat,
SKMatrix.MakeTranslation(0, yAdjust));
paint.BlendMode = SKBlendMode.DstOver;
canvas.DrawRect(info.Rect, paint);
}
}
}
public void Render(IStateOwner pOwner, SKCanvas pRenderTarget, PauseGameState Source, GameStateSkiaDrawParameters Element)
{
if (!Source.DrawDataInitialized)
{
InitDrawData(pOwner, Source, Element);
Source.DrawDataInitialized = true;
}
if (GameOverTextPaint == null)
{
GameOverTextPaint = new SKPaint();
GameOverTextPaint.Color = SKColors.Black;
GameOverTextPaint.TextSize = 24;
GameOverTextPaint.IsAntialias = true;
GameOverTextPaint.Typeface = TetrisGame.RetroFontSK;
}
String sPauseText = "Pause";
SKCanvas g = pRenderTarget;
var Bounds = Element.Bounds;
var FallImages = Source.FallImages;
SKRect MeasureBounds = new SKRect();
var measureresult = GameOverTextPaint.MeasureText(sPauseText, ref MeasureBounds);
//render the paused state.
//TetrisGame.RetroFontSK
if (Source.PauseGamePlayerState != null)
{
RenderingProvider.Static.DrawElement(Source, pRenderTarget, Source.PauseGamePlayerState, Element);
}
var ColorShader = SKShader.CreateColor(new SKColor(128, 128, 0, 128));
var PerlinShader = SKShader.CreatePerlinNoiseFractalNoise(0.5f, 0.5f, 4, 0, new SKPointI((int)Element.Bounds.Width, (int)Element.Bounds.Height)); //SKShader.CreatePerlinNoiseFractalNoise(0.5f, 0.5f, 5, (float)TetrisGame.rgen.NextDouble() * 3000000);
var DualPerlinShader = SKShader.CreateCompose(SKShader.CreatePerlinNoiseTurbulence(0.5f, 0.5f, 4, (float)TetrisGame.rgen.NextDouble() * 3000000), PerlinShader);
var Gradcolors = new SKColor[] {
new SKColor(0, 255, 255),
new SKColor(255, 0, 255),
new SKColor(255, 255, 0),
new SKColor(0, 255, 255)
};
//var sweep = SKShader.CreateSweepGradient(new SKPoint(128, 128), Gradcolors, null);
//var sweep = SKShader.CreateTwoPointConicalGradient(new SKPoint(Element.Bounds.Width / 2, Element.Bounds.Height - 64), Element.Bounds.Width,
// new SKPoint(Element.Bounds.Width / 2, 64), Element.Bounds.Width / 4, Gradcolors, null, SKShaderTileMode.Clamp);
var sweep = SKShader.CreateLinearGradient(new SKPoint(0, 0), new SKPoint(Element.Bounds.Width, Element.Bounds.Height), Gradcolors, null, SKShaderTileMode.Repeat);
// create the second shader
var turbulence = SKShader.CreatePerlinNoiseTurbulence(0.05f, 0.05f, 4, 0);
// create the compose shader
var shader = SKShader.CreateCompose(sweep, turbulence, SKBlendMode.SrcOver);
GrayBG.BlendMode = SKBlendMode.Luminosity;
//GrayBG.BlendMode = SKBlendMode.Nor;
//GrayBG.Color = new SKColor(0,0,0,128);
//GrayBG.ColorFilter = SKColorFilter.CreateHighContrast(SKHighContrastConfig.Default);
//GrayBG.Shader = SKShader.CreateLinearGradient(new SKPoint(Bounds.Left, Bounds.Top), new SKPoint(Bounds.Right, Bounds.Bottom), new SKColor[] { SKColors.Red, SKColors.Yellow, SKColors.Blue, SKColors.Green }, null, SKShaderTileMode.Repeat);
//ColorShader; // SKShader.CreateCompose(ColorShader,DualPerlinShader);
GrayBG.Shader = shader;
g.DrawRect(Bounds, GrayBG);
foreach (var iterate in FallImages)
{
iterate.Draw(g);
}
g.ResetMatrix();
SKPoint DrawPos = new SKPoint(Bounds.Width / 2 - MeasureBounds.Width / 2, Bounds.Height / 2 - MeasureBounds.Height / 2);
GameOverTextPaint.Color = SKColors.White;
g.DrawText(sPauseText, new SKPoint(DrawPos.X + 2, DrawPos.Y + 2), GameOverTextPaint);
GameOverTextPaint.Color = SKColors.Navy;
g.DrawText(sPauseText, DrawPos, GameOverTextPaint);
//retrieve the renderer for the MenuState object.
//var basecall = RenderingProvider.Static.GetHandler(typeof(SKCanvas), typeof(MenuState), typeof(GameStateSkiaDrawParameters));
base.Render(pOwner, pRenderTarget, Source, Element);
//basecall?.Render(pOwner, pRenderTarget, Source, Element);
}
public void DrawWeather(WeatherRendererInfo info, SKCanvas canvas, int width, int height)
{
// background
using (var paint = new SKPaint())
{
var colors = new[] { WeatherColors.DarkBlue, WeatherColors.Orange };
var headerHeight = 84;
var shaderGradient = SKShader.CreateLinearGradient(new SKPoint(0, headerHeight), new SKPoint(0, height),
colors, null, SKShaderTileMode.Clamp);
var shaderNoise = SKShader.CreatePerlinNoiseTurbulence(0.99f, 0.99f, 1, 0.0f);
var shaderComp = SKShader.CreateCompose(shaderGradient, shaderNoise, SKXferMode.Multiply);
paint.Color = WeatherColors.DarkBlue;
paint.Shader = shaderComp;
// background
canvas.DrawRect(new SKRect(0, 0, width, height), paint);
// header background
var grad = WeatherBitmapCache.Get("gradient_orange.png");
canvas.DrawBitmap(grad, new SKRect(0, 0, width, headerHeight));
// top right cutout
paint.Shader = null;
using (var path = new SKPath())
{
var baseX = 180;
var slant = 80;
path.MoveTo(width - baseX, 0);
path.LineTo(width, 0);
path.LineTo(width, headerHeight);
path.LineTo(width - baseX - slant, headerHeight);
canvas.DrawPath(path, paint);
}
}
// ticker
using (var paint = new SKPaint())
{
var alertsActive = info.WeatherResponse.alerts?.Count > 0;
var rect = new SKRect(0, height - 100, width, height);
paint.Color = SKColors.Black;
canvas.DrawRect(rect, paint);
rect.Top += 2;
paint.Color = SKColors.Gray;
canvas.DrawRect(rect, paint);
rect.Top += 2;
paint.Color = alertsActive ? WeatherColors.Red : WeatherColors.Teal;
canvas.DrawRect(rect, paint);
paint.Color = SKColors.White;
paint.TextSize = 36;
paint.Typeface = WeatherTypeface.Standard;
string message;
if (alertsActive)
{
message = string.Join(", ", (from alert in info.WeatherResponse.alerts select alert.title));
}
else
{
var unit = info.Unit == Unit.us ? "F" : "C";
message =
$"Temp: {(int) info.WeatherResponse.currently.temperature}°{unit} Feels Like: {(int) info.WeatherResponse.currently.apparentTemperature}°{unit}";
}
DrawShadowedText(canvas, message, 5, height - 55, paint);
}
// logo
var logo = WeatherBitmapCache.Get("logo.png");
var imgRect = new SKRect(20, 5, 20 + logo.Width, 5 + logo.Height);
;
canvas.DrawBitmap(logo, imgRect);
// city name and extended forecast header text
using (var paint = new SKPaint())
{
paint.TextSize = 36.0f;
paint.Typeface = WeatherTypeface.Standard;
var baseX = 150.0f;
var baseY = 32.0f;
var baseYOff = 30.0f;
paint.Color = SKColors.White;
DrawShadowedText(canvas, info.Address, baseX, baseY, paint);
paint.Color = WeatherColors.Yellow;
DrawShadowedText(canvas, "Extended Forecast", baseX, baseY + baseYOff, paint);
}
// top right date and time
using (var paint = new SKPaint())
{
// TODO: this is probably not right. i have an offset but no clue what the best way is here
var now = DateTime.UtcNow + TimeSpan.FromHours(info.WeatherResponse.offset);
var topDateLine = now.ToString("h:mm:ss tt").ToUpper();
var bottomDateLine = now.ToString("ddd MMM d").ToUpper();
var baseX = width - 280.0f;
var baseY = 45;
paint.Typeface = WeatherTypeface.Small;
paint.TextSize = 36;
paint.Color = SKColors.LightGray;
DrawShadowedText(canvas, topDateLine, baseX, baseY, paint);
DrawShadowedText(canvas, bottomDateLine, baseX, baseY + 20, paint);
}
for (var i = 0; i < 4; i++)
{
var boxWidth = 220;
var boxOffset = width / 4;
DrawForecast(canvas, new SKRect(i * boxOffset + 10, 90, i * boxOffset + boxWidth, height - 90 - 20),
info.WeatherResponse.daily.data[i]);
}
}