VEX Dictionary / noise

noise

Smooth Perlin-style noise from a position, centred around 0.5.

group: noisenoise

Available in every context

Usage

float noise(float pos)

vector noise(float pos)

float noise(float posx, float posy)

vector noise(float posx, float posy)

float noise(vector pos)

vector noise(vector pos)

float noise(vector4 pos)

vector noise(vector4 pos)

Examples

// Needs point normals (add a Normal SOP upstream)
float n = noise(@P * chf("freq")) - 0.5;
@P += @N * n * chf("amp");

Use cases

• Organic displacement and breakup
• Randomising scale, colour or timing smoothly across space

Signatures (from vcc -X)

• float noise(float)all contexts
• float noise(float, float)all contexts
• float noise(vector4)all contexts
• float noise(vector)all contexts
• vector noise(float)all contexts
• vector noise(float, float)all contexts
• vector noise(vector4)all contexts
• vector noise(vector)all contexts

Related

snoise onoise anoise curlnoise xnoise curlgxnoise curlgxnoise2d curlnoise2d curlxnoise curlxnoise2d cwnoise flownoise flowpnoise fnv1a_hash gxnoise gxnoised

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