The bezierDoubleSpinePattern Folder

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The bezierSpineBlurPattern Folder

This folder contains SVG documents that are based on polar equations combined with Bezier curves that use SVG filter elements. The example from this folder is the SVG document , which contains a double cissoid curve as the tracing curve for a set of ellipses. The blur filter produces 'smudged' ellipses, which helps to create a realistic visual effect.

Figure 18.4: A cissoid-based set of ellipses with a blur filter.

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