def fib2meshalyzer(filename):
"""
Given a filename for a CARP mesh (.pts, .elem and .lon) this functions
generates the .vec and .vpts files necessary to visualize vector data
in meshalyzer.
"""
ptsFile = "%s.pts" % filename
lonFile = "%s.lon" % filename
vecFile = "%s.vec" % filename
elemFile = "%s.elem" % filename
vptsFile = "%s.vpts" % filename
np_xyz = read_array_pts(ptsFile)
elemList = read_array_elem(elemFile)
# copy filename.lon to filename.vec
shutil.copy(lonFile, vecFile)
# create .vpts file
f = open(vptsFile, "w")
f.write("%d\n" % len(elemList))
for e in elemList:
numNode = getNumNode[e[0]]
nodeList = [e[j + 1] for j in xrange(numNode)]
centroid = get_element_center(nodeList, np_xyz)
f.write("%f %f %f\n" % (centroid[0], centroid[1], centroid[2]))
f.close()
print ".vec and .vpts files were generated!"
def tag_elem_file (elem_file, node_file, region_list):
"""
Function to tag rectangular areas in structured meshes in CARP
Bernardo M. Rocha, 2009
"""
new_efile = open('element.elem', 'w')
elem = read_array_elem (elem_file)
pts = read_array_pts (node_file)
for r in region_list:
for e in elem:
elem_type = e[0]
if elem_type == 'Qd':
node_range = xrange(1,4+1)
node_tag = e[5]
for n in node_range:
g = int( e[n] )
node = Point ( pts[g][0], pts[g][1], pts[g][2] )
# check if node is inside region
if ( (node.x >= r.bottom.x) and
(node.x <= r.bottom.x + r.width) and
(node.y >= r.top.y - r.height) and
(node.y <= r.top.y)):
node_tag = r.tag
# end if
# end for n
e[5] = node_tag
# end if Qd
# end for e
# end for r
# write to file
new_efile.write('%d\n' % len(elem))
for e in elem:
new_efile.write('Qd %d %d %d %d %d \n' %
(int(e[1]), int(e[2]),int(e[3]),int(e[4]),int(e[5])))
new_efile.close()
new_efile.close()