- solidify/Makefile: added solid.o
- solidify/solid.h, solidify.c (height_field, povray): output the part as
the intersection of two height fields
- solidify/solidify.c (main): generate POV-Ray output if stdout is
redirected
- solidify/Makefile (run, pov, disp): targets to run a test setup, render
it, and display the result
- solidify/main.pov: simple scene showing the test part
- solidify/face.h (face_z0): calculate height of z0 plane
- solidify/level.c (draw_image): use face_z0 instead of open-coding the
calculation
- solidify/overlap.c (draw_image, point): moved per-point processing from
draw_image() to point()
- solidify/overlap.c (point): show differences between both faces
- solidify/solidify.c (usage, main): load both faces
- solidify/solidify.c (usage, main): accept distance between faces as third
argument
- solidify/solid.h: definition of a solid made from two opposing faces
- solidify/overlap.h (overlap), solidify/overlap.c (draw_image,
scroll_event, overlap): operate on solid instead of face
- solidify/overlap.c (sx, sy, draw_image, overlap): helper functions sx()
and sy() to determine canvas size
- solidify/overlap.c (BORDER, sx, sy): added a border around the piece,
to help with positioning
- solidify/solidify.c (clicked, gui_buttons, gui, main): use solid instead
of faces
