Hallo,

i dont know if it is possible to import an stl and use it a primive.
I tried to do it but keep getting a runtime exception in line "
test = sol + s0":

"Message File Name Line Position
Traceback
C:\Documents and Settings\Tarjan\My Documents\Downloads\jayesh3-cadmium-ff4e994\jayesh3-cadmium-ff4e994\examples\example-001b.py 21
add c:\Python26\Lib\site-packages\cadmium\solid.py 42
RuntimeError: StdFail_NotDone
BRep_API: command not done "

My Code is:

!/usr/bin/python

import sys
import math
sys.path.append('./src')

from cadmium import *

stlfname = "example.stl"#sys.argv[1]

s0 = Sphere(r=4)

from OCC.Utils.DataExchange import STL
reader = STL.STLImporter(r'basebrick.stl')
reader.read_file()

sol = Solid(reader.get_shape())

test = sol + s0

test.toSTL(stlfname)

If somebody tells me how, ican upload the stl file. It seems that the OpenCASCADE lib throws the exception. But i cant step into it...

Tarjan

Union consumes about 500 Kb per sphere, though not producing new vertices.
Following program was run on a machine with 512Mb memory limit, crashed after making union of 800 identical spheres.

!/usr/bin/python

import sys
import math

from cadmium import *

def memory_usage():
"""Memory usage of the current process in MB."""
status = None
result = {'peak': 0, 'rss': 0}
try:
status = open('/proc/self/status')
for line in status:
parts = line.split()
key = parts[0][2:-1].lower()
if key in result:
result[key] = int(parts[1]) / 1024
finally:
if status is not None:

        status.close()
return result

s = Sphere(r = 5, center = True)
a = s

n = int(sys.argv[1])
for i in xrange(0, n):
s = s + a
if (i % 100) == 0:
print "i =", i, "mem usage", memory_usage()

s.toSTL("1.stl")

Output was:

deltaflight@natty32:~$ time python loop.py 900
i = 0 mem usage {'peak': 148, 'rss': 79}
i = 100 mem usage {'peak': 197, 'rss': 127}
i = 200 mem usage {'peak': 247, 'rss': 176}
i = 300 mem usage {'peak': 297, 'rss': 225}
i = 400 mem usage {'peak': 350, 'rss': 277}
i = 500 mem usage {'peak': 400, 'rss': 325}
i = 600 mem usage {'peak': 450, 'rss': 374}
i = 700 mem usage {'peak': 499, 'rss': 422}
i = 800 mem usage {'peak': 554, 'rss': 462}
Killed

real 2m6.949s
user 0m25.714s
sys 1m10.208s

deltaflight@natty32:~$ dmesg |tail -2
[ 3123.445580] Out of memory: Kill process 1101 (python) score 934 or sacrifice child
[ 3123.445833] Killed process 1101 (python) total-vm:607704kB, anon-rss:474520kB, file-rss:24kB

please look at this:

import sys
sys.path.append('./src')
from cadmium import *
u = Box(62,62,100, center=True) + Sphere(19).translate(-31,-31,-31)```

when run with current HEAD, I get:
```Traceback (most recent call last):
  File "examples/fail.py", line 5, in <module>
    u = Box(62,62,100, center=True) + Sphere(19).translate(-31,-31,-31)
  File "./src/cadmium/solid.py", line 50, in __add__
    union = BRepAlgoAPI_Fuse(self.shape, other.shape).Shape()
  File "/usr/lib/pymodules/python2.7/OCC/BRepAlgoAPI.py", line 222, in __init__
    _BRepAlgoAPI.BRepAlgoAPI_Fuse_swiginit(self,_BRepAlgoAPI.new_BRepAlgoAPI_Fuse(*args))
RuntimeError: Standard_ConstructionError```