BABAK0T0 BABAK0T0

Generic 1,2,3 Noise

float rand(float n){return fract(sin(n) * 43758.5453123);}

float noise(float p){
	float fl = floor(p);
  float fc = fract(p);
	return mix(rand(fl), rand(fl + 1.0), fc);
}

	var cameraZ = camera.position.z;
	var planeZ = 5;
	var distance = cameraZ - planeZ;
	var aspect = viewWidth / viewHeight;
	var vFov = camera.fov * Math.PI / 180;
	var planeHeightAtDistance = 2 * Math.tan(vFov / 2) * distance;
	var planeWidthAtDistance = planeHeightAtDistance * aspect;

	// or