filterUnits - SVG: Scalable Vector Graphics 编辑

The filterUnits attribute defines the coordinate system for the attributes x, y, width and height.

Only one element is using this attribute: <filter>

Usage notes

Value	`userSpaceOnUse` \| `objectBoundingBox`
Default value	`objectBoundingBox`
Animatable	Yes

userSpaceOnUse: x, y, width and height represent values in the current coordinate system that results from taking the current user coordinate system in place at the time when the <filter> element is referenced (i.e., the user coordinate system for the element referencing the <filter> element via a filter attribute).
objectBoundingBox: In that case, x, y, width and height represent fractions or percentages of the bounding box on the referencing element.

Specification	Status	Comment
Filter Effects Module Level 1 The definition of 'filterUnits' in that specification.	Working Draft	Initial definition
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'filterUnits' in that specification.	Recommendation	Initial definition