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public static CreateBitmap ( |
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| src | ||
| tmx | SKShaderTileMode | |
| tmy | SKShaderTileMode | |
| Résultat | ||
public static void BitmapShaderManipulated(SKCanvas canvas, int width, int height)
{
var assembly = typeof(Demos).GetTypeInfo().Assembly;
var imageName = assembly.GetName().Name + ".color-wheel.png";
// load the image from the embedded resource stream
using (var resource = assembly.GetManifestResourceStream(imageName))
using (var stream = new SKManagedStream(resource))
using (var source = SKBitmap.Decode(stream)) {
// invert the pixels
var pixels = source.Pixels;
for (int i = 0; i < pixels.Length; i++)
{
pixels[i] = new SKColor(
(byte)(255 - pixels [i].Red),
(byte)(255 - pixels [i].Green),
(byte)(255 - pixels [i].Blue),
pixels [i].Alpha);
}
source.Pixels = pixels;
using (var shader = SKShader.CreateBitmap(source, SKShaderTileMode.Repeat, SKShaderTileMode.Repeat))
using (var paint = new SKPaint()) {
paint.IsAntialias = true;
paint.Shader = shader;
// tile the bitmap
canvas.Clear(SKColors.White);
canvas.DrawPaint(paint);
}
}
}
public static void BitmapShader(SKCanvas canvas, int width, int height)
{
var assembly = typeof(Demos).GetTypeInfo().Assembly;
var imageName = assembly.GetName().Name + ".color-wheel.png";
// load the image from the embedded resource stream
using (var resource = assembly.GetManifestResourceStream(imageName))
using (var stream = new SKManagedStream(resource))
using (var source = SKBitmap.Decode(stream)) {
// create the shader and paint
//SkMatrix matrix;
//matrix.setScale(0.75f, 0.75f);
//matrix.preRotate(30.0f);
var matrix = SKMatrix.MakeRotation(30.0f);
using (var shader = SKShader.CreateBitmap(source, SKShaderTileMode.Repeat, SKShaderTileMode.Repeat, matrix))
using (var paint = new SKPaint()) {
paint.IsAntialias = true;
paint.Shader = shader;
// tile the bitmap
canvas.Clear(SKColors.White);
canvas.DrawPaint(paint);
}
}
}
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy, SKMatrix localMatrix) => SKShader.CreateBitmap(this, tmx, tmy, localMatrix);
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy) => SKShader.CreateBitmap(this, tmx, tmy);
