Grid stamping tool

[edemaine]

I wonder about a new Cocreate tool that simulates the easy "painting" features of the unreleased "SVG Tiler GUI" (square grid, hex grid). This is probably also an alternative to a point/dot tool (#175).

• Choose from a variety of stamps, e.g.:
  • Dot centered on grid point (Point/dot tool #175), maybe a few different sizes
  • Dot in middle of grid square
  • Grid square or triangle or hex. Even nicer would be to stroke "inside" via double stroke width + clip.
  • Dual grid: draw dual hexagon in triangular grid
• Each can be customized in terms of line width, fill color, stroke color (like any object)
• Paint over grid dots or squares (depending on stamp)
• If you paint over an existing object of same type, it gets replaced with this one. I think this "overwrite mode" is best; maybe there is also a draw-on-top mode? But maybe also want to toggle dots on top of squares...
• Different stamp for right button would be nice too. Or maybe toggle behavior: if you stamp on an identical stamp, it cancels out (and drag paints with stamp eraser).
• Stamp creation:
  1. Manual SVG <symbol>, including fillColor and strokeColor to define how assigning attributes behaves (similar to currentColor).
  2. Select objects, current stroke and fill and line thickness become wild (re-assigned when assigning attributes). Click a point for the origin.
• Ideally instantiate stamp via <use>, but need a different symbol for each "version" (stroke/fill/thickness).
• Can edit the stamp, by bringing up a new "page" for editing it. Maybe this is also a good way to create stamp. Special background color to indicate we're in stamp editing mode.
• Ideally allow stamps within stamps, but detect and reject cycles
• Maybe also can copy/paste stamps by dragging one stamp to another...
• Can delink a stamp instance from stamp so you can edit the components.
• Not yet addressed:
  • How to define flipping when doing opposite-parity triangles
  • How to define which grids this stamp works for