Perlin Noise Shaders

Fractal Perlin Noise Shader

Returns a shader with Perlin Fractal Noise.

Name	Type	Description
freqX	number	base frequency in the X direction; range [0.0, 1.0]
freqY	number	base frequency in the Y direction; range [0.0, 1.0]
octaves	number
seed	number
tileWidth?	number	if this and tileHeight are non-zero, the frequencies will be modified so that the noise will be tileable for the given size.
tileHeight?	number	if this and tileWidth are non-zero, the frequencies will be modified so that the noise will be tileable for the given size.

Example

import React from "react";
import {
  Canvas,
  Rect,
  FractalNoise,
  Skia,
  Shader,
  Fill,
  vec
} from "@shopify/react-native-skia";

export const FractalNoiseDemo = () => {
  return (
    <Canvas style={{ flex: 1 }}>
      <Fill color="white" />
      <Rect x={0} y={0} width={256} height={256}>
        <FractalNoise freqX={0.05} freqY={0.05} octaves={4} />
      </Rect>
    </Canvas>
  );
};

Result

Turbulence Perlin Noise Shader

Returns a shader with Perlin Turbulence.

Name	Type	Description
freqX	number	base frequency in the X direction; range [0.0, 1.0]
freqY	number	base frequency in the Y direction; range [0.0, 1.0]
octaves	number
seed	number
tileWidth?	number	if this and tileHeight are non-zero, the frequencies will be modified so that the noise will be tileable for the given size.
tileHeight?	number	if this and tileWidth are non-zero, the frequencies will be modified so that the noise will be tileable for the given size.

Example

import React from "react";
import {
  Canvas,
  Rect,
  Turbulence,
  Skia,
  Shader,
  Fill,
  vec
} from "@shopify/react-native-skia";

export const TurbulenceDemo = () => {
  return (
    <Canvas style={{ flex: 1 }}>
      <Fill color="white" />
      <Rect x={0} y={0} width={256} height={256}>
        <Turbulence freqX={0.05} freqY={0.05} octaves={4} />
      </Rect>
    </Canvas>
  );
};

Result