Transform Transitions
A grid of colored squares animates in response to mouse hovers, demonstrating smooth interpolation between different 2D SVG transforms. Each rect transitions from its original translate to a combined translate, scale, and rotate, then shrinks and fades before being removed. The code uses d3.v3 transitions with `.attr("transform")` to leverage matrix decomposition, automatically decomposing transforms into canonical translate, rotate, scale, and skew components. The visualization is built with a data-joined SVG rect per grid cell, filled with HSL colors based on position, and rendered entirely through D3’s selection and transition APIs.
AI-generated descriptionD3 2.5.0 supports matrix decomposition for animating 2D transforms. Any SVG transform attribute is decomposed into a canonical representation of translate, rotate, scale and skew. This allows two arbitrary transforms of different types to be transitioned smoothly—say from a simple translate to a scale plus rotate. These features are supported automatically by your browser for CSS3 transitions, but now you can have them in JavaScript for SVG, too!