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stl.py@b3cf0176512e (annotated)

stl.py

Tue, 04 Apr 2017 03:13:58 +0200

author

mdd

date

Tue, 04 Apr 2017 03:13:58 +0200

changeset 12

b3cf0176512e

parent 10

d26669bf424e

child 14

ba3d8c56e6f5

permissions

-rw-r--r--

finished webrenderer

9 a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	1	import data, os, config, subprocess
10 d26669bf424e binary stl precompile mdd parents: 9 diff changeset	2	import vtk
9 a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	3
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	4	OPENSCAD_MODULES = """
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	5	module tank(x, r, h) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	6	color("SteelBlue") render() { //rotate([90,0,0]) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	7	translate([x, r, r]) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	8	sphere(r = r); // bottom
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	9	cylinder(h = h-2*r, r = r);
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	10	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	11	translate([x, r, h-r]) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	12	sphere(r = r); // top
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	13	cylinder(h = r*1.4, r = r*0.25);
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	14	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	15	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	16	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	17
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	18	module spacer(x, r, rcyl, h) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	19	color("DarkGrey") render() { //rotate([90,0,0]) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	20	translate([x, r, rcyl]) {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	21	difference() {
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	22	cylinder(h = h-2*rcyl, r = r);
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	23	cylinder(h = h-2*rcyl, r = r*0.8);
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	24	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	25	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	26	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	27	}
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	28	$fn = 25; // high detail per default
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	29	"""
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	30
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	31	def run_openscad(output):
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	32	if os.path.isfile(output):
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	33	print "skipping existing file %s" % output
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	34	return
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	35	print "rendering %s" % output
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	36	subprocess.check_call([
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	37	'openscad',
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	38	'-o',
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	39	output,
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	40	config.TMP_SCAD
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	41	])
10 d26669bf424e binary stl precompile mdd parents: 9 diff changeset	42	# convert to binary
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	43	reader = vtk.vtkSTLReader()
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	44	reader.SetFileName(output)
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	45	reader.Update()
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	46	write = vtk.vtkSTLWriter()
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	47	write.SetFileTypeToBinary()
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	48	write.SetInput(reader.GetOutput())
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	49	write.SetFileName(output)
d26669bf424e binary stl precompile mdd parents: 9 diff changeset	50	write.Write()
9 a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	51
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	52	def precompile_all_stl():
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	53	base = os.path.abspath('stl')
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	54	hmin = 9999
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	55	rmax = 0
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	56	for cyl in data.CYLINDER.keys():
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	57	with open(config.TMP_SCAD, "w") as fn:
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	58	fn.write(OPENSCAD_MODULES)
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	59	fn.write("tank(0, %f, %f);" % (
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	60	data.CYLINDER[cyl][0] / 2 * config.SCALE3D,
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	61	data.CYLINDER[cyl][1] * config.SCALE3D))
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	62	run_openscad(os.path.join(base,
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	63	'cylinder_' + cyl + '.stl'))
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	64	if data.CYLINDER[cyl][1] < hmin:
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	65	hmin = data.CYLINDER[cyl][1]
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	66	if data.CYLINDER[cyl][0] > rmax:
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	67	rmax = data.CYLINDER[cyl][0]
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	68
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	69	for pipe in data.PIPES:
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	70	with open(config.TMP_SCAD, "w") as fn:
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	71	fn.write(OPENSCAD_MODULES)
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	72	fn.write("spacer(0, %f, %f, %f);" % (
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	73	pipe[1] / 2 * config.SCALE3D,
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	74	rmax / 2 * config.SCALE3D,
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	75	hmin * config.SCALE3D))
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	76	run_openscad(os.path.join(base,
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	77	'spacer_' + pipe[0] + '.stl'))
a01a3fd32073 precompile STL files with openscad mdd parents: diff changeset	78