def write(self,fname,scene):
""" write an ascii point file """
print("Write "+fname)
d = alg.Discretizer()
f = file(fname,'w')
isptsfile = ('.pts' in fname)
ispwnfile = ('.pwn' in fname)
isxyz = ('.xyz' in fname)
if isptsfile or ispwnfile:
nbpoints = 0
for i in scene:
if i.apply(d):
p = d.discretization
if isinstance(p,sg.PointSet) :
nbpoints += len(p.pointList)
f.write(str(nbpoints)+'\n')
for i in scene:
if i.apply(d):
p = d.discretization
if isinstance(p,sg.PointSet) :
hasColor = not p.colorList is None and len(p.colorList) > 0
col = i.appearance.ambient
for i,pt in enumerate(p.pointList):
f.write(str(pt.x)+' '+str(pt.y)+' '+str(pt.z)+' ')
if not isxyz and not ispwnfile:
if hasColor:
col = p.colorList[i]
if isptsfile:
f.write(str(rgb2intensity(col)))
f.write(str(col.red)+' '+str(col.green)+' '+str(col.blue)+'\n')
else: f.write('\n')
f.close()
def write(self, fname, scene):
""" Write an OBJ file from a plantGL scene graph.
This method will convert a PlantGL scene graph into an OBJ file.
It does not manage materials correctly yet.
:Examples:
import openalea.plantgl.scenegraph as sg
scene = sg.Scene()"""
print("Write " + fname)
d = alg.Discretizer()
f = file(fname, 'w')
line = '# File generated by PlantGL'
f.write(line + '\n')
vertices = [] # List of point List
normals = [] # List of normal List
texcoords = [] # List of texture List
faces = [] # list of tuple (offset,index List)
counter = 0
for i in scene:
if i.apply(d):
p = d.discretization
pts = p.pointList
ns = p.normalList
ts = p.texCoordList
indices = p.indexList
n = len(p.pointList)
if n > 0:
vertices.append(pts)
if ns:
normals.append(ns)
if ts:
texcoords.append(ts)
faces.append(Faces(i.name, counter + 1, p))
counter += n
for pts in vertices:
for x, y, z in pts:
f.write('v %f %f %f\n' % (x, y, z))
f.write('\n')
for pts in normals:
for x, y, z in pts:
f.write('vn %f %f %f\n' % (x, y, z))
f.write('\n')
for pts in texcoords:
for x, y in pts:
f.write('vt %f %f \n' % (x, y))
f.write('\n')
mtl_file = os.path.basename(fname)
mtl_file = os.path.splitext(mtl_file)[0] + '.mtl'
f.write('mtllib %s' % (mtl_file))
for face in faces:
face.obj(f)
f.close()
# Need to get an AxialTree from the Lpy to be able to convert it to a scene.
lsys = Lsystem('175_3_mod_noColors.lpy')
lString = lsys.derive()
# interpretedString is an AxialTree
interpretedString = lsys.interpret(lString)
# The AxialTree can be converted to a Scene
scene = lsys.sceneInterpretation(interpretedString)
# Entities in the Scene can be discretized to generate polygons.
# Most of this code block was obtained from: https://github.com/pradal/scanalea/blob/master/src/scanalea/vtk.py
vertices = [] # List of point List
normals = [] # List of normal List
texcoords = [] # List of texture List
faces = [] # list of tuple (offset,index List)
d = alg.Discretizer()
counter = 0
pointCounter = 0
faceCounter = 0
for i in scene:
if i.apply(d):
p = d.discretization
pts = p.pointList
ns = p.normalList
ts = p.texCoordList
indices = p.indexList
n = len(p.pointList)
if n > 0:
vertices.append(pts)
pointCounter += 1
if ns: