public override void Render(IDrawingContextImpl drw_context)
{
if (drw_context is ISkiaDrawingContextImpl context)
{
var canvas = context.SkCanvas;
canvas.Save();
var info = new SKImageInfo((int)Bounds.Width, (int)Bounds.Height);
var s_r = stroke / 2;
SKRect rect = new SKRect(s_r, s_r, info.Height - s_r, info.Width - s_r);
using (var paint = new SKPaint())
{
paint.Shader = SKShader.CreateColor(StrokeColor.ToSKColor());
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = stroke;
paint.IsAntialias = true;
paint.Color = StrokeColor.ToSKColor();
canvas.DrawArc(rect, _angle1, _angle2, false, paint);
}
canvas.Restore();
Debug.WriteLine(StrokeColor.ToString());
Debug.WriteLine("Arc rendered");
}
}
public override void Render(SKCanvas canvas, SKRect bounds, SKPaint paint)
{
paint.Shader = SKShader.CreateColor(_currentColor);
canvas.DrawRect(bounds, paint);
paint.Shader?.Dispose();
paint.Shader = null;
}
public void Draw(SKCanvas canvas, float scale)
{
var screenDimensions = _drawingConfig.ScreenDimensions(scale);
var sliderCenter = new SKPoint(_slider.Position.X * scale, _slider.Position.Y * scale);
var radiusScale = !_slider.IsSelected ? 1f : 1.1f;
var radius = _slider.Radius * radiusScale * scale;
canvas.DrawCircle(sliderCenter, radius + screenDimensions.BetweenCirclesMargin, new SKPaint()
{
Shader = SKShader.CreateColor(_drawingConfig.BackgroundColor), IsStroke = false, IsAntialias = true
});
canvas.DrawCircle(sliderCenter, radius, new SKPaint()
{
Shader = SKShader.CreateColor(_slider.Color), IsStroke = false, IsAntialias = true
});
if (_slider.IsSelected)
{
canvas.DrawCircle(sliderCenter, radius / 2f, new SKPaint()
{
Shader = SKShader.CreateColor(_drawingConfig.BackgroundColor), IsStroke = false, IsAntialias = true
});
}
}
/// <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);
}
private Texture2D getOrCreateTexture(GraphicsDevice device)
{
if (this.bitmap is null || this.texture is null)
{
this.bitmap?.Dispose();
this.texture?.Dispose();
this.bitmap = new SKBitmap(this.mBounds.Width, this.mBounds.Height);
using var ms = new MemoryStream();
using var canvas = new SKCanvas(this.bitmap);
using var white_skpaint = new SKPaint()
{
Shader = SKShader.CreateLinearGradient(new SKPoint(0.0f, 0.0f), new SKPoint(this.mBounds.Width, 0.0f), new SKColor[] { SKColors.Transparent, SKColors.White }, SKShaderTileMode.Decal)
};
using var black_skpaint = new SKPaint()
{
Shader = SKShader.CreateLinearGradient(new SKPoint(0.0f, 0.0f), new SKPoint(this.mBounds.Height, 0.0f), new SKColor[] { SKColors.Transparent, new SKColor(1, 1, 1, 255) }, SKShaderTileMode.Decal)
};
using var colour_skpaint = new SKPaint()
{
Shader = SKShader.CreateColor(this.hueColour.AsSKColor())
};
canvas.DrawPaint(colour_skpaint);
canvas.DrawPaint(white_skpaint);
canvas.RotateDegrees(90.0f);
canvas.DrawPaint(black_skpaint);
this.bitmap.Encode(ms, SKEncodedImageFormat.Png, 95);
this.texture = Texture2D.FromStream(device, ms);
}
return(this.texture);
}
private void CreateSolid()
{
_color = Properties.Color.CurrentValue;
_shader?.Dispose();
_shader = SKShader.CreateColor(_color);
UpdatePaint();
}
private SKShader Shader(float scale)
{
if (_color != null)
{
return(SKShader.CreateColor(_color.Value));
}
if (_colorPositions != null)
{
return(SKShader.CreateLinearGradient(_p0.Multiply(scale), _p1.Multiply(scale), _colorPositions.Select(cp => cp.Color).ToArray(), _colorPositions.Select(cp => cp.Position).ToArray(), SKShaderTileMode.Clamp));
}
return(SKShader.CreateColor(SKColors.Red));
}
public override void Render(IDrawingContextImpl context)
{
var canvas = (context as ISkiaDrawingContextImpl)?.SkCanvas;
var surface = (context as ISkiaDrawingContextImpl)?.SkSurface;
if (canvas == null | surface == null)
{
context.Clear(Colors.White);
context.DrawText(new SolidColorBrush(Colors.Black), new Point(), NoSkia);
}
else
{
Surface = surface;
var width = (int)Bounds.Width;
var height = (int)Bounds.Height;
var info = new SKImageInfo(width, height);
using (SKPaint paint = new SKPaint())
{
SKColor[] colors = { SKColors.White, HueColor.ToSKColor() };
SKPoint center = new SKPoint(info.Rect.MidX, info.Rect.MidY);
paint.Shader = SKShader.CreateLinearGradient(new SKPoint(0, 0), new SKPoint(width, 0), colors, SKShaderTileMode.Repeat);
var rect = SKRect.Create(width, height);
canvas.DrawRect(rect, paint);
}
// Creates the black gradient effect (transparent to black)
using (SKPaint paint = new SKPaint())
{
SKColor[] colors = { SKColors.Transparent, SKColors.Black };
paint.Shader = SKShader.CreateLinearGradient(new SKPoint(0, 0), new SKPoint(0, height), colors, SKShaderTileMode.Repeat);
var rect = SKRect.Create(width, height);
canvas.DrawRect(rect, paint);
}
using (SKPaint paint = new SKPaint())
{
paint.Shader = SKShader.CreateColor(StrokeColor.ToSKColor());
var rect = SKRect.Create(width, height);
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = StrokeWidth;
canvas.DrawRect(rect, paint);
}
}
}
/// <inheritdoc />
public override void Render(SKCanvas canvas, SKRect bounds, SKPaint paint)
{
paint.Shader = Properties.ColorMode.CurrentValue switch
{
SolidBrushColorMode.Static => SKShader.CreateColor(Properties.Color),
SolidBrushColorMode.GradientPosition => SKShader.CreateColor(Properties.Colors.CurrentValue.GetColor(Properties.GradientPosition / 100f)),
SolidBrushColorMode.GradientAnimation => SKShader.CreateColor(Properties.Colors.CurrentValue.GetColor(_animationPosition)),
_ => SKShader.CreateColor(Properties.Color)
};
canvas.DrawRect(bounds, paint);
paint.Shader?.Dispose();
paint.Shader = null;
}
/// <inheritdoc />
public override void Render(SKCanvas canvas, SKRect bounds, SKPaint paint)
{
if (Properties.EnableColorAnimation)
{
paint.Shader = SKShader.CreateColor(Properties.Colors.CurrentValue.GetColor(_position));
}
else
{
paint.Shader = SKShader.CreateColor(Properties.Color);
}
canvas.DrawRect(bounds, paint);
paint.Shader?.Dispose();
paint.Shader = null;
}
public override void Render(SKCanvas canvas, SKRect bounds, SKPaint paint)
{
if (rect != bounds)
{
rect = bounds;
}
foreach (Particle particle in _particles)
{
//handle color modes here.
switch (Properties.Color.ColorMode.CurrentValue)
{
case ParticleColorMode.Lifetime:
paint.Shader = SKShader.CreateColor(Properties.Color.Gradient.CurrentValue.GetColor((float)particle.LifetimePercent));
break;
case ParticleColorMode.Static:
paint.Shader = SKShader.CreateColor(Properties.Color.Color);
break;
case ParticleColorMode.Sweep:
paint.Shader = SKShader.CreateSweepGradient(particle.Position, Properties.Color.Gradient.CurrentValue.GetColorsArray());
break;
case ParticleColorMode.Radial:
paint.Shader = SKShader.CreateRadialGradient(particle.Position, particle.Radius, Properties.Color.Gradient.CurrentValue.GetColorsArray(), SKShaderTileMode.Clamp);
break;
default:
break;
}
canvas.DrawCircle(particle.Position, particle.Radius, paint);
if (Properties.Trail.DrawTrail.CurrentValue)
{
SKPoint normalized = SKPoint.Normalize(particle.Velocity);
float mult = Properties.Trail.TrailLength.CurrentValue.GetValueAtPercent((float)particle.LifetimePercent);
SKPoint trailEndPosition = new SKPoint(
particle.Position.X - (normalized.X * mult),
particle.Position.Y - (normalized.Y * mult)
);
paint.StrokeWidth = Properties.Trail.TrailWidth.CurrentValue.GetValueAtPercent((float)particle.LifetimePercent);
canvas.DrawLine(particle.Position, trailEndPosition, 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);
}
}
private void CreateShader()
{
var center = new SKPoint(Layer.Rectangle.MidX, Layer.Rectangle.MidY);
SKShader shader;
switch (Settings.GradientType)
{
case GradientType.Solid:
shader = SKShader.CreateColor(_testColors.First());
break;
case GradientType.LinearGradient:
shader = SKShader.CreateLinearGradient(new SKPoint(0, 0), new SKPoint(Layer.Rectangle.Width, 0), _testColors.ToArray(), SKShaderTileMode.Repeat);
break;
case GradientType.RadialGradient:
shader = SKShader.CreateRadialGradient(center, Math.Min(Layer.Rectangle.Width, Layer.Rectangle.Height), _testColors.ToArray(), SKShaderTileMode.Repeat);
break;
case GradientType.SweepGradient:
shader = SKShader.CreateSweepGradient(center, _testColors.ToArray(), null, SKShaderTileMode.Clamp, 0, 360);
break;
default:
throw new ArgumentOutOfRangeException();
}
var oldShader = _shader;
var oldPaint = _paint;
_shader = shader;
_paint = new SKPaint {
Shader = _shader, FilterQuality = SKFilterQuality.Low
};
oldShader?.Dispose();
oldPaint?.Dispose();
}
public static SKShader ToSkiaShader(this Brush brush, double width, double height)
{
if (brush == null)
{
return(null);
}
else if (brush is SolidColorBrush)
{
return(SKShader.CreateColor((brush as SolidColorBrush).Color.ToSKColor()));
}
else if (brush is LinearGradientBrush)
{
var b = brush as LinearGradientBrush;
return(SKShader.CreateLinearGradient(
new SKPoint((float)(b.StartPoint.X * width), (float)(b.StartPoint.Y * height)),
new SKPoint((float)(b.EndPoint.X * width), (float)(b.EndPoint.Y * height)),
b.GradientStops.Select(x => x.Color.ToSKColor()).ToArray(),
b.GradientStops.Select(x => (float)x.Offset).ToArray(),
SKShaderTileMode.Clamp));
}
else if (brush is RadialGradientBrush)
{
var b = brush as RadialGradientBrush;
return(SKShader.CreateRadialGradient(
new SKPoint((float)(b.Center.X * width), (float)(b.Center.Y * height)),
(float)b.RadiusX,
b.GradientStops.Select(x => x.Color.ToSKColor()).ToArray(),
b.GradientStops.Select(x => (float)x.Offset).ToArray(),
SKShaderTileMode.Clamp));
}
else
{
throw new NotSupportedException($"Unsupported brush type {brush.GetType().Name}.");
}
}
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;
}
}
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
//determine find smallet axis length
MinorAxisLength = info.Width > info.Height ? info.Height : info.Width;
arcWidth = MinorAxisLength / 30;
arcPadding = MinorAxisLength / 15;
KnobRadius = MinorAxisLength / 30;
float radius = (MinorAxisLength / 2);
//update center
Center = new SKPoint(info.Width / 2, info.Height / 2);
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
// canvas.Scale((float)(canvasView.CanvasSize.Width / canvasView.Width));
// SKPaint BackgroundPaint = new SKPaint
// {
// Style = SKPaintStyle.Fill,
// Shader = SKShader.CreateColor(BackgroundColor.ToSKColor()),
// };
//
// canvas.DrawRect(new SKRect(Center.X-(MinorAxisLength/2), Center.Y - (MinorAxisLength / 2), Center.X + (MinorAxisLength / 2), Center.Y + (MinorAxisLength / 2)), BackgroundPaint);
SKPaint arcPaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Shader = SKShader.CreateColor(ArcColor.ToSKColor()),
StrokeCap = SKStrokeCap.Round,
StrokeWidth = arcWidth + 1,
IsAntialias = true,
};
SKPaint arcBackgroundPaint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Shader = SKShader.CreateColor(ArcBackgroundColor.ToSKColor()),
StrokeCap = SKStrokeCap.Round,
StrokeWidth = arcWidth,
IsAntialias = true,
// ImageFilter = SKImageFilter.CreateDropShadow(0, 0, 2, 2, Color.Black.ToSKColor(), SKDropShadowImageFilterShadowMode.DrawShadowAndForeground)
};
SKPaint KnobPaint = new SKPaint
{
Style = SKPaintStyle.Fill,
Shader = SKShader.CreateColor(KnobColor.ToSKColor()),
IsAntialias = true,
ImageFilter = SKImageFilter.CreateDropShadow(0, 0, 3, 3, ArcColor.MultiplyAlpha(.5).ToSKColor())
};
SKPaint TextPaint = new SKPaint
{
Style = SKPaintStyle.Fill,
Shader = SKShader.CreateColor(TextColor.ToSKColor()),
IsAntialias = true,
TextSize = 40f,
IsStroke = false,
TextAlign = SKTextAlign.Center,
};
//create the rectangle that contains the arc
//SKRect rect = new SKRect(arcPadding, arcPadding, MinorAxisLength - arcPadding, MinorAxisLength - arcPadding);
SKRect rect = new SKRect(arcPadding + Center.X - (MinorAxisLength / 2), arcPadding + Center.Y - (MinorAxisLength / 2), Center.X + (MinorAxisLength / 2) - arcPadding, Center.Y + (MinorAxisLength / 2) - arcPadding);
//var point = LastTouchedPoint;
//calcualte the angle of the last touched point realtive to the center of the arc
var sweepAngle = getsweepangle();
float realAngle = startAngle + sweepAngle;
//Debug.WriteLine($"realAngle:{realAngle % 360}");
float arcRadius = (MinorAxisLength / 2) - arcPadding;;
//get x and y compoents o the point on ther arc
float x = arcRadius * (float)Math.Cos(DegreeToRadian(realAngle));
float y = arcRadius * (float)Math.Sin(DegreeToRadian(realAngle));
//move the points realitve to the center of the chart
// SKRect rect = new SKRect(arcPadding + Center.X - (MinorAxisLength / 2), arcPadding + Center.Y - (MinorAxisLength / 2), Center.X + (MinorAxisLength / 2) - arcPadding, Center.Y + (MinorAxisLength / 2) - arcPadding);
float realtiveX = x + Center.X;
float realtiveY = y + Center.Y;
using (SKPath path = new SKPath())
{
//draw background arc
path.AddArc(rect, startAngle, 300);
canvas.DrawPath(path, arcBackgroundPaint);
}
using (SKPath path = new SKPath())
{
//draw arc showing value
path.AddArc(rect, startAngle, sweepAngle);
canvas.DrawPath(path, arcPaint);
}
//draw current postion
var TextBounds = new SKRect();
var ValueString = String.Format("{0:F" + Precision + "}", Value);
TextPaint.MeasureText(ValueString, ref TextBounds);
canvas.DrawOval(new SKRect(realtiveX - KnobRadius, realtiveY - KnobRadius, realtiveX + KnobRadius, realtiveY + KnobRadius), KnobPaint);
if (ShowValue)
{
canvas.DrawText(ValueString, Center.X, Center.Y + (TextBounds.Height / 2), TextPaint);
}
}
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 override void Render(IDrawingContextImpl context)
{
var canvas = ((ISkiaDrawingContextImpl)context)?.SkCanvas;
if (canvas == null)
{
context.Clear(Colors.White);
context.DrawText(new SolidColorBrush(Colors.Black), new Point(), NoSkia);
}
else
{
int width = (int)Bounds.Width;
int height = (int)Bounds.Height;
var info = new SKImageInfo(width, height);
//canvas.Scale((float)Bounds.Width, (float)Bounds.Height, -(float)Bounds.Width, -(float)Bounds.Height);
canvas.RotateDegrees(-90f, (float)Bounds.Center.X, (float)Bounds.Center.Y);
using (SKPaint paint = new SKPaint())
{
SKColor[] colors = new SKColor[8];
for (int i = 0; i < colors.Length; i++)
{
colors[i] = SKColor.FromHsl(i * 360f / 7, 100, 50); //sets the colors
}
SKPoint center = new SKPoint(info.Rect.MidX, info.Rect.MidY); // creates the center
// Create sweep gradient based on center of canvas
paint.Shader = SKShader.CreateSweepGradient(center, colors, null);
float radius = (Math.Min(info.Width, info.Height) - StrokeWidth) / 2; //computes the radius
canvas.DrawCircle(center, radius, paint); // draw a circle with its respects parameters
}
// Creates the black gradient effect (transparent to black)
using (SKPaint paint = new SKPaint())
{
SKColor[] colors = { SKColors.White, SKColors.Transparent };
SKPoint center = new SKPoint(info.Rect.MidX, info.Rect.MidY); // creates the center
int strokeWidth = 20;
float radius = (Math.Min(info.Width, info.Height) - strokeWidth) / 2; //computes the radius
paint.Shader = SKShader.CreateRadialGradient(center, radius, colors, null, SKShaderTileMode.Repeat);
canvas.DrawCircle(center, radius, paint);
}
using (SKPaint paint = new SKPaint())
{
var colorStroke = Stroke.ToSKColor();
SKPoint center = new SKPoint(info.Rect.MidX, info.Rect.MidY); // creates the center
float radius = (Math.Min(info.Width, info.Height) - StrokeWidth) / 2; //computes the radius
paint.Shader = SKShader.CreateColor(colorStroke);
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = StrokeWidth;
canvas.DrawCircle(center, radius, 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);
}
}
}