SVG As an Animation Grammar
Animation is a time-based alteration in the characteristics of an image. During an SVG animation, the SVG rendering engine maintains two copies of the value to be animated. One is the original value (which is maintained in the DOM), and the other is the presentation value, the value that gives rise to the onscreen appearance during an animation.
Before I discuss and show you working SVG animations, I want to discuss the general way in which SVG animations are implemented and the various forms of syntax you can apply.
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