Lithophane Frame Generator

TITLE:
Curved Lithophane Frame Generator

2020.03.23 Just a shout out to Mark Durbin, who made my goto online photo-to-stl website http://3dp.rocks/lithophane/. His site is AWESOME, thanks man!

2020.03.22 Note: This generator requires version OpenSCAD [2019, 5, 0], which is not supported as yet on Customizer!

SUMMARY:
Use this OpenSCAD file to custom generate a nice frame for a lithophane stl. Typical lithophane stl generators add a "border" by messing with the picture before generating the height map. See for example http://3dp.rocks/lithophane/. However, this border is often not pretty, and generally does not take overhang into account.

REQUIREMENTS:
Original Photo Aspect Ratio (or width and height)
Some of the lithophane stl measurments
Merging with the lithophane stl (Many options, easy see below)

NOTE: this stl is below the z plane! This is to help align your files in the slicer!

INSTRUCTIONS:
When using this frame, set the border in your lithophane