Gems Map by Selection

Gems Map by Selection

This command draws the same 2D gem map as Gems Map, but only for the gems you select, and with control over the plane the map is projected from.

Run the command and Rhino asks you to select diamonds or gemstones. Whole groups can be picked in one click. Objects that are not gems are discarded, and if nothing valid remains a message reminds you that the selected objects must be gems.

You are then asked to click a point to add the gem list table. Before picking that point, the command line offers these options:

• Scale — size factor applied to the map, default 2, between 0.01 and 10.
• Projection — Planar (default) uses the position of each gem as it is; Spherical unrolls the gems around the world Z axis, which gives a much better result on curved surfaces such as a band or a bangle.
• ExpandOverlapping — No by default. Set it to Yes to push overlapping outlines apart until they clear each other, keeping their relative arrangement.
• ProjectionPlane — XY, ZX or YZ, the world plane the gems are flattened onto. While you cycle through the list a translucent pink plane preview is drawn in the viewport so you can see which one you are choosing.

Once you pick the point, each gem is drawn as its real outline, colored by size, with a hatch and its diameter written in the middle. The whole map is scaled by the Scale factor and centered on the point you picked.

Everything is added to a Rhino group named GEMS_MAP and created as a single undo step, so you can move or scale the finished map with the Gumball, or undo it in one go.