May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Zoom transforms
A zoom transform is an object that saves state information about an object's transformed position and scale. It contains three properties:
- transform.x: The translate x coordinate. The default is zero.
- transform.y: The translate y coordinate. The default is zero.
- transform.k: The scale factor. The default is 1.
If an object wasn't been transformed yet, its zoom transform object will contain default values for each property. This object is the identity transform. A zoom transform can be obtained from any DOM node. It's frequently accessed as a property of the d3.event object in a zoom listener, described as follows:
|
Function or property |
Description |
|
d3.zoomTransform(node) |
Creates a zoom transform object for a given ... |
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