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public static CreatePerlinNoiseTurbulence ( float baseFrequencyX, float baseFrequencyY, int numOctaves, float seed ) : |
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| baseFrequencyX | float | |
| baseFrequencyY | float | |
| numOctaves | int | |
| seed | float | |
| return | ||
public static void TurbulencePerlinNoiseShader(SKCanvas canvas, int width, int height)
{
canvas.Clear(SKColors.White);
using (var shader = SKShader.CreatePerlinNoiseTurbulence(0.05f, 0.05f, 4, 0.0f))
using (var paint = new SKPaint())
{
paint.Shader = shader;
canvas.DrawPaint(paint);
}
}
public static void ComposeShader(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);
}
}