Property Reference

Properties not listed here can still be parsed as generic name: value pairs. Their runtime behavior is not guaranteed.

The pipeline status column says how far a property travels:

runtime: changes how the scene behaves while it plays.
renderer: changes what you see, or what gets exported.
ignored: accepted, but nothing happens yet.

Property	Context	Value	Default	Values	Pipeline status	Description
`active`	`camera`	boolean	-	-	renderer	Animatable discrete camera selection; exactly one eligible camera must be true. A sole camera is inferred only when unspecified.
`anchor`	`instance`	number \| (x, y) \| (x, y, z)	`(0, 0, 0)`	-	runtime	Local transform pivot in pixels; (0, 0, 0) is the geometric centre.
`beatOffset`	`root`	number	`0`	-	runtime	Static finite signed seconds for beat zero. Positive delays, negative advances; invalid values use 0 with a diagnostic.
`blendMode`	`instance`	identifier \| string	`normal`	`normal`, `multiply`, `screen`, `overlay`, `add`, `subtract`, `darken`, `lighten`, `color-dodge`, `color-burn`, `hard-light`, `soft-light`, `difference`, `exclusion`, `divide`, `hue`, `saturation`, `color`, `luminosity`	renderer	Composites the complete layer over earlier content in linear color space.
`borderRadius`	`shape`	number \| (topLeft, topRight, bottomRight, bottomLeft)	`0`	-	renderer	Corner radius for supported shapes.
`bpm`	`root`	number	`120`	-	runtime	Static finite positive beats per minute; numeric constant aliases supported. Invalid values use 120 with a diagnostic.
`camera`	`instance`	identifier	-	-	renderer	perspective \| orthographic; a non-rendering scene camera.
`clipping`	`root`, `instance`, `frame`	boolean	`false`	-	renderer	Clips descendants to the instance or frame bounds.
`clipText`	`text`	boolean	`false`	-	renderer	Clips text that exceeds its height.
`duration`	`root`, `frame`	number	`5`	-	runtime	Timeline duration in seconds.
`end`	`shape`	(x, y)	`(100, 0)`	-	renderer	Line end point.
`far`	`camera`	number	-	-	renderer	Far clipping distance greater than near, default 10000.
`fill`	`root`, `instance`, `shape`, `text`	color \| define reference \| image fill	-	-	renderer	Fill for scenes, shapes, and text. Colors render in every context; image paths and fill blocks (source, fit, position, repeat, crop) render on scenes and shapes, while text ignores image fills.
`focalLength`	`camera`	number	-	-	renderer	Positive focal length in mm, default 50; mutually exclusive with fov.
`fontFamily`	`text`	string \| define reference	`Arial`	-	renderer	Font family or font asset define.
`fontSize`	`text`	number	`16`	-	renderer	Font size in scene units.
`fontStyle`	`text`	normal \| italic	`normal`	-	renderer	Font style.
`fontWeight`	`text`	normal \| bold \| number	`normal`	-	renderer	Font weight.
`fov`	`camera`	number	-	-	renderer	Vertical field of view in degrees, strictly between 0 and 180.
`fps`	`root`, `instance`, `frame`	number	`0`	-	runtime	Sampling rate for the instance subtree; 0 leaves sampling uncapped.
`height`	`shape`, `text`	number	-	-	renderer	Explicit shape or text height constraint. May be a percentage of the parent height.
`letterSpacing`	`text`	number	`0`	-	renderer	Letter spacing as a fraction of font size.
`lineHeight`	`text`	number	`1.2`	-	renderer	Line-height multiplier.
`lookAt`	`camera`	(x, y, z) \| instance \| instance.glyph(index)	-	-	renderer	World target point or unique instance anchor/animated glyph ink centre; excludes rotation.
`maskInvert`	`instance`	boolean	`false`	-	renderer	Inverts vector mask coverage, including outside the source geometry.
`maskMode`	`instance`	identifier \| string	`none`	`none`, `alpha`, `luminance`	renderer	Masks earlier siblings in the same parent using vector alpha or linear luminance.
`maxHeight`	`text`	number	-	-	renderer	Maximum text layout height.
`maxWidth`	`text`	number	-	-	renderer	Maximum text layout width.
`near`	`camera`	number	-	-	renderer	Positive near clipping distance, default 1.
`opacity`	`instance`, `shape`, `text`, `asset`	number	`1`	-	renderer	Opacity multiplier for rendered content.
`orthoHeight`	`camera`	number	-	-	renderer	Vertical orthographic extent in scene units; defaults to scene height.
`pathPoints`	`shape`	array of (x, y)	-	-	renderer	Point list used by the path shape renderer.
`points`	`shape`	number \| array of (x, y)	-	-	renderer	Renderer-backed alias for starPoints with a number or pathPoints with an array.
`pose`	`camera`	camera reference	-	-	renderer	Live world-space view pose. Animate between camera references with ordinary timing and replace/mix blending.
`position`	`instance`	number \| (x, y) \| (x, y, z)	`(0, 0)`	-	runtime	Transform position. A scalar is the x coordinate; omitted components default to 0. Values may be percentages of the parent size (e.g. 10%).
`radius`	`shape`	number	`50`	-	renderer	Ellipse radius.
`ratio`	`shape`	number	`0.5`	-	renderer	Inner-to-outer radius ratio for a star.
`roll`	`camera`	number	-	-	renderer	Clockwise roll in degrees around the lookAt direction.
`rotation`	`instance`	number \| (x, y, z)	`0`	-	runtime	Transform rotation in degrees. A scalar is the 2D z rotation.
`scale`	`instance`	number \| (x, y) \| (x, y, z)	`1`	-	runtime	Transform scale. A scalar applies uniformly.
`sensorHeight`	`camera`	number	-	-	renderer	Positive sensor height in mm, default 24.
`shape`	`shape`	identifier \| string	-	`rectangle`, `ellipse`, `circle`, `star`, `line`, `path`	renderer	Selects a shape renderer. circle is a runtime-compatible alias of ellipse.
`size`	`root`, `instance`, `shape`	(width, height)	-	-	renderer	Scene, frame, or shape dimensions. Values may be percentages of the parent size (e.g. (50%, 25%)).
`starPoints`	`shape`	number	`5`	-	renderer	Number of points on a star.
`start`	`shape`	(x, y)	`(0, 0)`	-	renderer	Line start point.
`stroke`	`shape`	color \| define reference	-	-	renderer	Shape stroke color.
`stroke`	`text`	color \| define reference	-	-	ignored	Accepted syntactically, but the current text renderer ignores it.
`strokeCap`	`shape`	identifier	`round`	`round`, `butt`, `square`	renderer	Native open stroke and trim endpoint cap; SVG keeps its own stroke-linecap.
`strokeWidth`	`shape`	number	`2`	-	renderer	Shape stroke width.
`strokeWidth`	`text`	number	`2`	-	ignored	Accepted syntactically, but the current text renderer ignores it.
`svg`	`asset`	string \| define reference	-	-	renderer	SVG asset path or inline SVG source.
`targetOffset`	`camera`	(x, y, z)	-	-	renderer	Target-local XYZ offset for instance/glyph targets; world offset for point targets.
`text`	`text`	string	-	-	renderer	Text content. Its presence selects text rendering.
`textAlign`	`text`	identifier \| string	`left`	`left`, `center`, `right`, `justify`	renderer	Horizontal text alignment.
`textShaping`	`text`	identifier \| string	`legacy_kern_only`	`legacy_kern_only`, `full`	renderer	Selects the text layout shaping mode; full enables ligatures.
`trimEnd`	`shape`, `asset`	number	`1`	-	renderer	Finite normalized cumulative stroke arc-length end, clamped to [0,1]. Native vectors and solid round-join SVG strokes; no wrapping.
`trimStart`	`shape`, `asset`	number	`0`	-	renderer	Finite normalized cumulative stroke arc-length start, clamped to [0,1]. Fill is unaffected; start >= end is empty.
`up`	`camera`	(x, y, z)	-	-	renderer	World up direction for targeted cameras; defaults to (0, 1, 0).
`verticalAlign`	`text`	identifier \| string	`top`	`top`, `middle`, `bottom`, `baseline`	renderer	Vertical text alignment.
`visible`	`instance`	boolean	`true`	-	renderer	Skips rendering when false.
`width`	`shape`, `text`	number	-	-	renderer	Explicit shape or text width constraint. May be a percentage of the parent width.
`wordWrap`	`text`	boolean	`true`	-	renderer	Enables text word wrapping.