dotCooCoo 66d21471ae Gradients: diamond gradients run the stops from the center out to a square ...

A new gradient kind, `diamond`, runs its stops from the center (the
start) out to a square with a corner at the end of the vector; the
aspect stretches the square across the vector into a rhombus. The
Gradient panel's Type row has a Diamond button, the Gradient tool draws
the square with the aspect handle and center ring, and a gradient
fitted to an object covers its box.

- Model and canvas: the level is |x| + |y| in the square's frame; a
  square with no area (no vector, an aspect of 0, numbers out of range)
  paints the last stop. The canvas draws it as pixels, out to a
  stroke's miters, caps and arrowheads. Transforms keep the vector and
  take the mapped size across it as the aspect.
- Commands: `paint.setFill`, `paint.editGradient` and
  `paint.setGradientGeom` take `kind: "diamond"`; a negative aspect or
  a focal point is an error. A conic or diamond gradient that a plug-in
  returns with a focal point loses the focal point.
- Gradient tool: dragging the aspect handle of a radial or diamond
  gradient whose file gave it a negative aspect now sets a positive
  aspect; only a conic's negative aspect mirrors it.
- Export: PDF, SVG, EPS and legacy .ai write four linear gradients, one
  for each quarter of the square, clipped to the shape (PDF as axial
  shadings). PDF and SVG write an image for translucent stops, a
  dithered fill or a flat square, and for the Perceptual method unless
  PDF writes the stops as spot color shadings. SVG writes a diamond on
  type characters as a radial gradient through the corners, and so
  does CSS. A swatch library saved as CSS gets four corner layers, a
  value for the `background` property (a circle when the swatch is
  turned by an angle that is not a multiple of 90 degrees). The .ai
  editing data holds a radial gradient through the corners. The
  document exports give a warning.
- SVG export: a stroke drawn as an image, as conic wedges or as diamond
  quarters now covers the miters, caps and arrowheads that reach past
  its paint box.
- PDF import reads a function-based shading whose color is the same
  along each square about the origin of its space as a diamond.
- Object > Expand gives nested squares or a mesh of rings.

Docs: docs/mcp.md, docs/target-app-parity.md.

2026-11-11 20:27:48 -08:00

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envelope_ink.rs

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