Noise

Applies a noise to the geometry

Description

The noise can affect any attribute, not just the position.

Parameters

Name	Type	Description
amplitude	float	noise amplitude
tamplitudeAttrib	boolean	toggle on to multiply the amplitude by a vertex attribute
amplitudeAttrib	string	which vertex attribute to use
freq	vector3	noise frequency
offset	vector3	noise offset
octaves	integer	noise octaves
ampAttenuation	float	amplitude attenuation for higher octaves
freqIncrease	float	frequency increase for higher octaves
seed	integer	noise seed
useNormals	boolean	toggle on to have the noise be multiplied by the normal
attribName	string	set which attribute will be affected by the noise
useRestAttributes	boolean	toggle on to use rest attributes. This can be useful when the noise is animated and this node does not clone the input geometry. Without using rest attributes, the noise would be based on an already modified position, and would therefore accumulate on itself after each cook. This may be what you are after, but for a more conventional result, using a rest attribute will ensure that the noise remains stable. Note that the rest attribute can be created by a RestAttributes node
restP	string	name of rest position
restN	string	name of rest normal
operation	integer	operation done when applying the noise (add, set, mult, subtract, divide)
computeNormals	boolean	toggle on to recompute normals if the position has been updated


	// create a scene
const scene = new PolyScene();
const root = scene.root();

// create a sphere
const geo = root.createNode('geo');
const sphere = geo.createNode('sphere');

// add a noise
const noise = geo.createNode('noise');
noise.setInput(0, sphere);
noise.p.amplitude.set(0.5);
noise.p.useNormals.set(true);
noise.flags.display.set(true);

// add a light
root.createNode('hemisphereLight');

// create a camera
const perspectiveCamera1 = root.createNode('perspectiveCamera');
perspectiveCamera1.p.t.set([5, 5, 5]);
// add orbitControls
const events1 = perspectiveCamera1.createNode('eventsNetwork');
const orbitsControls = events1.createNode('cameraOrbitControls');
perspectiveCamera1.p.controls.setNode(orbitsControls);

// mount the viewer
const element = document.getElementById('app');
perspectiveCamera1.createViewer({element});