- solidify/overlap.c (scroll_event): use center of canvas as center, not
center of the top face
- solidify/overlap.c (do_shift, shift, scroll_event): added translation
(shifting)
- 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
- solidify/Makefile (OBJS): added overlap.o
- solidify/Makefile (CFLAGS): added -O9 to speed up rotation a little
- solidify/array.h, solidify/array.c (get_bounded): like get(), but returns
UNDEF if the indices are outside the array
- solidify/face.h (struct face, struct matrix), solidify/face.c (read_file):
added a 2D transformation matrix to "struct face"
- solidify/overlap.h, solidify/overlap.c: show a face with 2D transformation
