OctoDraw

Tool Input interpolate

Brush

Brush kind

Preset

Size Spacing Color A Color B

Custom picker

Code reference

`param(name, def, opts)`	Creates a live control. Use `{min,max,step,label}`, or `{type:'color'}`.
`brushRadius(r)`	Dynamic brush footprint. No engine-side fixed maximum.
`brushSize(w,h)`	Explicit dynamic footprint.
`brushSpacing(px)`	Minimum distance between generated dabs; large stamps should use this.
`circle / ellipse / ring / box`	Shape tests around current local brush pixel.
`oscillate / fade / ramp`	Time/distance modulation helpers.
`rand / dabRand / strokeRand`	Deterministic random values.
`spray(radius,density)`	Random points within a circle.
`noise2(x,y,salt)`	Smooth deterministic 2D value noise.
`irc(index)`	Clamp to IRC99 16–98.
`mixColor(a,b,t)`	RGB mix snapped to IRC99.
`hueRotate(c,degrees)`	Hue rotation snapped to IRC99.
`colorRamp(a,b,t)`	Alias for color mixing; useful for gradients.
`colorCycle(colors,source,period)`	Cycles smoothly through an array of IRC colors using time, distance, x/y, etc.
`shade(color,amount)`	Darken with negative values or lighten with positive values, from -1 to +1.

Brush variables: canvasX canvasY canvasPixelX canvasPixelY strokeCount dabIndex strokeX strokeY distance deltaX deltaY dirX dirY perpX perpY direction time strokeTime strokeSeconds brushWidth brushHeight x y dx dy base.

Fill variables: x y fillX fillY fillU fillV centerX centerY dx dy distance fillAngle minX maxX minY maxY regionWidth regionHeight regionSize regionIndex sourceColor time.

Brush code returns false for transparent, true for default white, or IRC color 16..98. Fill code returns an IRC color, or false to leave that region pixel unchanged.

IRC output preview

Canvas Zoom

Output not generated yet.