feat: add SVG vector graphics support#16
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SVGs are rendered as true PDF vector graphics (Form XObjects) preserving crisp quality at any scale — no rasterization. The existing `c.Image()` API detects SVGs automatically alongside JPEG and PNG. Supported elements: <path>, <rect> (with rounded corners), <circle>, <ellipse>, <line>, <polyline>, <polygon>, <g> with transforms. Path commands: M/L/H/V/C/S/Q/T/A/Z (absolute and relative), arcs approximated with cubic Bézier curves. Colors: named, #rrggbb, #rgb, rgb(), rgba(). Opacity via PDF ExtGState (ca/CA). Transforms: translate, scale, rotate, matrix, skewX, skewY. New low-level API: pdf.Writer.RegisterFormXObject(). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
RikusLategan
approved these changes
Apr 5, 2026
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Closes #12
Summary
c.Image()API works unchanged<path>,<rect>,<circle>,<ellipse>,<line>,<polyline>,<polygon>,<g>groupsfill,stroke,stroke-width,opacity,fill-opacity,stroke-opacity, inlinestyleattributetranslate,scale,rotate,matrix,skewX,skewY#rrggbb,#rgb,rgb(),rgba()ca/CA)pdf.Writer.RegisterFormXObject()Checklist
go test ./...passesgo vet ./...clean_benchmarkis unrelated to this PR)