Pan & Zoom III

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Pan & Zoom III

✓ Published0🌍 Public

Last edited Oct 2, 2017

Created on Oct 2, 2017

This example shows a dense phyllotaxis pattern of 2,000 circles that users can pan and zoom with the mouse. The code uses the d3-zoom plugin in D3 v4 to handle input, applying the zoom transform directly to a group element containing the circles. An invisible overlay rect ensures the zoom behavior receives events, while the SVG’s coordinate system is adjusted with a translate transform. The rendering is done via SVG circles, with a resize handler updating the layout.

AI-generated description

This example demonstrates using d3-zoom to pan and zoom an SVG element by applying an SVG transform using transform.toString. The zoom behavior is applied to an invisible rect overlaying the SVG element; this ensures that it receives input, and that the pointer coordinates are not affected by the zoom behavior’s transform.

gpl-3.0 Licensed

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