public static void RenderTexture(SKCanvas canvas, SKBitmap bitmap, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Center,
float opacity = 1f,
float scale = 1f)
{
canvas.Save();
canvas.Translate(x, y);
canvas.RotateDegrees(orientation, 0, 0); // todo: or degrees?
canvas.Scale(scale, scale);
x = offsetX + DetermineHorizontalAlignmentCorrection(horizontalAlignment, bitmap.Width);
y = -offsetY + DetermineVerticalAlignmentCorrection(verticalAlignment, bitmap.Height);
var halfWidth = bitmap.Width/2;
var halfHeight = bitmap.Height/2;
var rect = new SKRect(x - halfWidth, y - halfHeight, x + halfWidth, y + halfHeight);
RenderTexture(canvas, bitmap, rect, opacity);
canvas.Restore();
}
public static void DrawGradient(SKCanvas canvas, int width, int height)
{
var ltColor = SKColors.White;
var dkColor = SKColors.Black;
using (var paint = new SKPaint()) {
paint.IsAntialias = true;
using (var shader = SKShader.CreateLinearGradient(
new SKPoint(0, 0),
new SKPoint(0, height),
new [] { ltColor, dkColor },
null,
SKShaderTileMode.Clamp)) {
paint.Shader = shader;
canvas.DrawPaint(paint);
}
}
// Center and Scale the Surface
var scale = (width < height ? width : height) / (240f);
canvas.Translate(width / 2f, height / 2f);
canvas.Scale(scale, scale);
canvas.Translate(-128, -128);
using (var paint = new SKPaint()) {
paint.IsAntialias = true;
using (var shader = SKShader.CreateTwoPointConicalGradient(
new SKPoint(115.2f, 102.4f),
25.6f,
new SKPoint(102.4f, 102.4f),
128.0f,
new [] { ltColor, dkColor },
null,
SKShaderTileMode.Clamp
)) {
paint.Shader = shader;
canvas.DrawOval(new SKRect(51.2f, 51.2f, 204.8f, 204.8f), paint);
}
}
}
/// <summary>
/// Combines 2 images into one, given the shared ImageStats for both supplied images.
/// </summary>
/// <param name="info">the ImageStats object used to generate both bottom and top tiles.</param>
/// <param name="bottomTile">the tile to use as the base of the image. Expected to be opaque.</param>
/// <param name="topTile">The tile to layer on top. Expected to be at least partly transparent or translucent.</param>
/// <returns></returns>
public byte[] LayerTiles(ImageStats info, byte[] bottomTile, byte[] topTile)
{
SkiaSharp.SKBitmap bitmap = new SkiaSharp.SKBitmap(info.imageSizeX, info.imageSizeY, SkiaSharp.SKColorType.Rgba8888, SkiaSharp.SKAlphaType.Premul);
SkiaSharp.SKCanvas canvas = new SkiaSharp.SKCanvas(bitmap);
SkiaSharp.SKPaint paint = new SkiaSharp.SKPaint();
canvas.Scale(1, 1, info.imageSizeX / 2, info.imageSizeY / 2);
paint.IsAntialias = true;
var baseBmp = SkiaSharp.SKBitmap.Decode(bottomTile);
var topBmp = SkiaSharp.SKBitmap.Decode(topTile);
canvas.DrawBitmap(baseBmp, 0, 0);
canvas.DrawBitmap(topBmp, 0, 0);
var ms = new MemoryStream();
var skms = new SkiaSharp.SKManagedWStream(ms);
bitmap.Encode(skms, SkiaSharp.SKEncodedImageFormat.Png, 100);
var output = ms.ToArray();
skms.Dispose(); ms.Close(); ms.Dispose();
return(output);
}
#pragma warning restore 414
public static void DrawXamagon(SKCanvas canvas, int width, int height)
{
// Width 41.6587026 => 144.34135
// Height 56 => 147
var paddingFactor = .6f;
var imageLeft = 41.6587026f;
var imageRight = 144.34135f;
var imageTop = 56f;
var imageBottom = 147f;
var imageWidth = imageRight - imageLeft;
var scale = (((float)height > width ? width : height) / imageWidth) * paddingFactor;
var translateX = (imageLeft + imageRight) / -2 + width / scale * 1 / 2;
var translateY = (imageBottom + imageTop) / -2 + height / scale * 1 / 2;
canvas.Scale(scale, scale);
canvas.Translate(translateX, translateY);
using (var paint = new SKPaint()) {
paint.IsAntialias = true;
paint.Color = SKColors.White;
canvas.DrawPaint(paint);
paint.StrokeCap = SKStrokeCap.Round;
var t = paint.StrokeCap;
using (var path = new SKPath()) {
path.MoveTo(71.4311121f, 56f);
path.CubicTo(68.6763107f, 56.0058575f, 65.9796704f, 57.5737917f, 64.5928855f, 59.965729f);
path.LineTo(43.0238921f, 97.5342563f);
path.CubicTo(41.6587026f, 99.9325978f, 41.6587026f, 103.067402f, 43.0238921f, 105.465744f);
path.LineTo(64.5928855f, 143.034271f);
path.CubicTo(65.9798162f, 145.426228f, 68.6763107f, 146.994582f, 71.4311121f, 147f);
path.LineTo(114.568946f, 147f);
path.CubicTo(117.323748f, 146.994143f, 120.020241f, 145.426228f, 121.407172f, 143.034271f);
path.LineTo(142.976161f, 105.465744f);
path.CubicTo(144.34135f, 103.067402f, 144.341209f, 99.9325978f, 142.976161f, 97.5342563f);
path.LineTo(121.407172f, 59.965729f);
path.CubicTo(120.020241f, 57.5737917f, 117.323748f, 56.0054182f, 114.568946f, 56f);
path.LineTo(71.4311121f, 56f);
path.Close();
paint.Color = XamDkBlue;
canvas.DrawPath(path, paint);
}
using (var path = new SKPath()) {
path.MoveTo(71.8225901f, 77.9780432f);
path.CubicTo(71.8818491f, 77.9721857f, 71.9440029f, 77.9721857f, 72.0034464f, 77.9780432f);
path.LineTo(79.444074f, 77.9780432f);
path.CubicTo(79.773437f, 77.9848769f, 80.0929203f, 78.1757336f, 80.2573978f, 78.4623994f);
path.LineTo(92.8795281f, 101.015639f);
path.CubicTo(92.9430615f, 101.127146f, 92.9839987f, 101.251384f, 92.9995323f, 101.378901f);
path.CubicTo(93.0150756f, 101.251354f, 93.055974f, 101.127107f, 93.1195365f, 101.015639f);
path.LineTo(105.711456f, 78.4623994f);
path.CubicTo(105.881153f, 78.167045f, 106.215602f, 77.975134f, 106.554853f, 77.9780432f);
path.LineTo(113.995483f, 77.9780432f);
path.CubicTo(114.654359f, 77.9839007f, 115.147775f, 78.8160066f, 114.839019f, 79.4008677f);
path.LineTo(102.518299f, 101.500005f);
path.LineTo(114.839019f, 123.568869f);
path.CubicTo(115.176999f, 124.157088f, 114.671442f, 125.027775f, 113.995483f, 125.021957f);
path.LineTo(106.554853f, 125.021957f);
path.CubicTo(106.209673f, 125.019028f, 105.873247f, 124.81384f, 105.711456f, 124.507327f);
path.LineTo(93.1195365f, 101.954088f);
path.CubicTo(93.0560031f, 101.84258f, 93.0150659f, 101.718333f, 92.9995323f, 101.590825f);
path.CubicTo(92.983989f, 101.718363f, 92.9430906f, 101.842629f, 92.8795281f, 101.954088f);
path.LineTo(80.2573978f, 124.507327f);
path.CubicTo(80.1004103f, 124.805171f, 79.7792269f, 125.008397f, 79.444074f, 125.021957f);
path.LineTo(72.0034464f, 125.021957f);
path.CubicTo(71.3274867f, 125.027814f, 70.8220664f, 124.157088f, 71.1600463f, 123.568869f);
path.LineTo(83.4807624f, 101.500005f);
path.LineTo(71.1600463f, 79.400867f);
path.CubicTo(70.8647037f, 78.86725f, 71.2250368f, 78.0919422f, 71.8225901f, 77.9780432f);
path.LineTo(71.8225901f, 77.9780432f);
path.Close();
paint.Color = SKColors.White;
canvas.DrawPath(path, paint);
}
}
}
#pragma warning restore 414
public static void DrawXamagon (SKCanvas canvas, int width, int height)
{
// Width 41.6587026 => 144.34135
// Height 56 => 147
var paddingFactor = .6f;
var imageLeft = 41.6587026f;
var imageRight = 144.34135f;
var imageTop = 56f;
var imageBottom = 147f;
var imageWidth = imageRight - imageLeft;
var scale = (((float)height > width ? width : height) / imageWidth) * paddingFactor;
var translateX = (imageLeft + imageRight) / -2 + width/scale * 1/2;
var translateY = (imageBottom + imageTop) / -2 + height/scale * 1/2;
canvas.Scale (scale, scale);
canvas.Translate (translateX , translateY);
using (var paint = new SKPaint ()) {
paint.IsAntialias = true;
paint.Color = SKColors.White;
canvas.DrawPaint (paint);
paint.StrokeCap = SKStrokeCap.Round;
var t = paint.StrokeCap;
using (var path = new SKPath ()) {
path.MoveTo (71.4311121f, 56f);
path.CubicTo (68.6763107f, 56.0058575f, 65.9796704f, 57.5737917f, 64.5928855f, 59.965729f);
path.LineTo (43.0238921f, 97.5342563f);
path.CubicTo (41.6587026f, 99.9325978f, 41.6587026f, 103.067402f, 43.0238921f, 105.465744f);
path.LineTo (64.5928855f, 143.034271f);
path.CubicTo (65.9798162f, 145.426228f, 68.6763107f, 146.994582f, 71.4311121f, 147f);
path.LineTo (114.568946f, 147f);
path.CubicTo (117.323748f, 146.994143f, 120.020241f, 145.426228f, 121.407172f, 143.034271f);
path.LineTo (142.976161f, 105.465744f);
path.CubicTo (144.34135f, 103.067402f, 144.341209f, 99.9325978f, 142.976161f, 97.5342563f);
path.LineTo (121.407172f, 59.965729f);
path.CubicTo (120.020241f, 57.5737917f, 117.323748f, 56.0054182f, 114.568946f, 56f);
path.LineTo (71.4311121f, 56f);
path.Close ();
paint.Color = XamDkBlue;
canvas.DrawPath (path, paint);
}
using (var path = new SKPath ()) {
path.MoveTo (71.8225901f, 77.9780432f);
path.CubicTo (71.8818491f, 77.9721857f, 71.9440029f, 77.9721857f, 72.0034464f, 77.9780432f);
path.LineTo (79.444074f, 77.9780432f);
path.CubicTo (79.773437f, 77.9848769f, 80.0929203f, 78.1757336f, 80.2573978f, 78.4623994f);
path.LineTo (92.8795281f, 101.015639f);
path.CubicTo (92.9430615f, 101.127146f, 92.9839987f, 101.251384f, 92.9995323f, 101.378901f);
path.CubicTo (93.0150756f, 101.251354f, 93.055974f, 101.127107f, 93.1195365f, 101.015639f);
path.LineTo (105.711456f, 78.4623994f);
path.CubicTo (105.881153f, 78.167045f, 106.215602f, 77.975134f, 106.554853f, 77.9780432f);
path.LineTo (113.995483f, 77.9780432f);
path.CubicTo (114.654359f, 77.9839007f, 115.147775f, 78.8160066f, 114.839019f, 79.4008677f);
path.LineTo (102.518299f, 101.500005f);
path.LineTo (114.839019f, 123.568869f);
path.CubicTo (115.176999f, 124.157088f, 114.671442f, 125.027775f, 113.995483f, 125.021957f);
path.LineTo (106.554853f, 125.021957f);
path.CubicTo (106.209673f, 125.019028f, 105.873247f, 124.81384f, 105.711456f, 124.507327f);
path.LineTo (93.1195365f, 101.954088f);
path.CubicTo (93.0560031f, 101.84258f, 93.0150659f, 101.718333f, 92.9995323f, 101.590825f);
path.CubicTo (92.983989f, 101.718363f, 92.9430906f, 101.842629f, 92.8795281f, 101.954088f);
path.LineTo (80.2573978f, 124.507327f);
path.CubicTo (80.1004103f, 124.805171f, 79.7792269f, 125.008397f, 79.444074f, 125.021957f);
path.LineTo (72.0034464f, 125.021957f);
path.CubicTo (71.3274867f, 125.027814f, 70.8220664f, 124.157088f, 71.1600463f, 123.568869f);
path.LineTo (83.4807624f, 101.500005f);
path.LineTo (71.1600463f, 79.400867f);
path.CubicTo (70.8647037f, 78.86725f, 71.2250368f, 78.0919422f, 71.8225901f, 77.9780432f);
path.LineTo (71.8225901f, 77.9780432f);
path.Close ();
paint.Color = SKColors.White;
canvas.DrawPath (path, paint);
}
}
}
public static void DrawGradient (SKCanvas canvas, int width, int height)
{
var ltColor = SKColors.White;
var dkColor = SKColors.Black;
using (var paint = new SKPaint ()) {
paint.IsAntialias = true;
using (var shader = SKShader.CreateLinearGradient (
new SKPoint (0, 0),
new SKPoint (0, height),
new [] {ltColor, dkColor},
null,
SKShaderTileMode.Clamp)) {
paint.Shader = shader;
canvas.DrawPaint (paint);
}
}
// Center and Scale the Surface
var scale = (width < height ? width : height) / (240f);
canvas.Translate (width/2f, height/2f);
canvas.Scale (scale, scale);
canvas.Translate (-128, -128);
using (var paint = new SKPaint ()) {
paint.IsAntialias = true;
using (var shader = SKShader.CreateTwoPointConicalGradient (
new SKPoint (115.2f, 102.4f),
25.6f,
new SKPoint (102.4f, 102.4f),
128.0f,
new [] {ltColor, dkColor},
null,
SKShaderTileMode.Clamp
)) {
paint.Shader = shader;
canvas.DrawOval (new SKRect (51.2f, 51.2f, 204.8f, 204.8f), paint);
}
}
}
private static void DrawPointWithSymbolStyle(SKCanvas canvas, SymbolStyle style,
Point destination, SymbolType symbolType = SymbolType.Ellipse)
{
canvas.Save();
canvas.Translate((float)destination.X,(float)destination.Y);
canvas.Scale((float)style.SymbolScale, (float)style.SymbolScale);
DrawPointWithVectorStyle(canvas, style, symbolType);
canvas.Restore();
}