def __init__(self):
self.globalCameraUpIndex = 0
#self.globalFloorMin = float('inf')
self.globalCamera = Camera()
self.globalImage = Image()
self.globalShaderFactory = ShaderFactory()
self.dispatch = {'camera':self.parseCamera, '#default':self.parseDefault,
'light_source':self.parseLightSource, 'plane':self.parsePlane,
'mesh2':self.parseMesh2, 'sphere':self.parseSphere, 'cylinder':self.parseCylinder}
self.globalSCString={'camera':[], '#default':[], 'light_source':[],
'plane':[], 'mesh2':[], 'sphere':[], 'cylinder':[]}
class pov:
def __init__(self):
self.globalCameraUpIndex = 0
#self.globalFloorMin = float('inf')
self.globalCamera = Camera()
self.globalImage = Image()
self.globalShaderFactory = ShaderFactory()
self.dispatch = {'camera':self.parseCamera, '#default':self.parseDefault,
'light_source':self.parseLightSource, 'plane':self.parsePlane,
'mesh2':self.parseMesh2, 'sphere':self.parseSphere, 'cylinder':self.parseCylinder}
self.globalSCString={'camera':[], '#default':[], 'light_source':[],
'plane':[], 'mesh2':[], 'sphere':[], 'cylinder':[]}
# convert pov into sc file
def parsePov(self, pov_str, scfile):
print '\nStart parsing PovRay primitives ...'
pov_str=pov_str.replace('\n',' ').replace('\r','')
for key in self.dispatch.keys():
pov_str = pov_str.replace(key, '\n'+key)
buf = StringIO.StringIO(pov_str)
povlines = buf.readlines()
#povlines = pov_str.split('\n')
t1 = time.time()
count = 0
for line in povlines:
line = line.strip()
if len(line)<2: continue
for key in self.dispatch.keys():
if key in line[0:15]:
count+=1
self.globalSCString[key].append(self.dispatch[''.join(key)](line))
if count%1000==0:
print str(count)+' primitives parsed ...'
t2 = time.time()
print '\nTime elapsed: %s seconds.' % (str(t2-t1))
print '\nWriting SC information ... '
# after get minmax z, before writing camera
if self.globalCamera.attr['type'] == 'thinlens':
# -1.0 * (min - max) since z is always negative
self.globalCamera.attr['fdist'] = -1.0 * (self.globalCamera.dofScale * (self.globalImage.minz - self.globalImage.maxz)/90.0 + self.globalImage.maxz)
fout=open(scfile,'w')
# globalSCString['camera'] stores Image informat not camera
# after adding dof, camera SC need to generate after all the geometry parsed.
fout.write(''.join(self.globalSCString['camera']))
fout.write(self.globalCamera.SCString())
# out.write(''.join(globalSCString['light_source']))
fout.write(self.globalShaderFactory.SCString(self.globalImage.attr['globalShader']))
fout.write(self.globalImage.floorSCString())
fout.write(''.join(self.globalSCString['mesh2']))
fout.write(''.join(self.globalSCString['sphere']))
fout.write(''.join(self.globalSCString['cylinder']))
fout.close()
def checkLowestPoint(self, pArray):
cp = [0.0,0.0,0.0]
cp[0] = float(pArray[0])
cp[1] = float(pArray[1])
cp[2] = float(pArray[2])
self.globalImage.checkLowestPoint(cp)
# parse camera information
def parseCamera(self, entry):
N=len(entry)
locationIdx = entry.find('location')
for i in xrange(locationIdx+8,N):
if entry[i]=='<':
j=i+1
while entry[j]!='>': j+=1
location = entry[i+1:j].replace(',',' ')
#print location
break
endPoint = j
rightIdx = entry[endPoint:N].find('right')+endPoint
for i in xrange(rightIdx, N):
if entry[i].isdigit() == True:
j=i+1
while entry[j]!='*': j+=1
aspect = entry[i:j]
#print aspect
break
endPoint = j
upIdx = entry[endPoint:N].find('up')+endPoint
for i in xrange(upIdx, N):
if (entry[i].isalpha() == True) and (entry[i] in 'xyz'):
if entry[i]=='x':
up = '1.0 0.0 0.0'
self.globalCamera.upIndex = 0
self.globalImage.attr['floor:n'] = [1.0, 0.0, 0.0]
elif entry[i] == 'y':
up = '0.0 1.0 0.0'
self.globalCamera.upIndex = 1
self.globalImage.attr['floor:n'] = [0.0, 1.0, 0.0]
else:
up = '0.0 0.0 1.0'
self.globalCamera.upIndex = 2
self.globalImage.attr['floor:n'] = [0.0, 0.0, 1.0]
#print 'globalCameraUpIndex: %d\n' % self.globalCamera.upIndex
break
target = '\ttarget 0.0 0.0 -57.8435' # change later
width = self.globalImage.outputWidth
height = width/float(aspect)
self.globalImage.attr['resolution'] = '%d %d' % (width, height)
self.globalCamera.attr['eye']=location
self.globalCamera.attr['up'] = up
self.globalCamera.attr['target']='0.0 0.0 -57.8435'
self.globalCamera.attr['fov']='25.0'
self.globalCamera.attr['aspect']=aspect
#return self.globalImage.SCString()+self.globalCamera.SCString()
return self.globalImage.SCString()
# do nothing
def parseDefault(self, entry):
return ''
def parsePlane(self, entry):
return ''
# parse light information
def parseLightSource(self, entry):
N=len(entry)
for i in xrange(0, N):
if entry[i]=='<':
j=i+1
while entry[j]!='>':j+=1
point = entry[i+1:j].replace(',', ' ') # find light location
break
endPoint = j
for i in xrange(endPoint,N):
if entry[i]=='<':
j=i+1
while entry[j]!='>':j+=1
color = entry[i+1:j].replace(',', ' ') # find color
break
return 'light {\n\ttype point\n\tcolor { "sRGB nonlinear" %s }\n\tpower 100.0\n\tp %s\n}\n' % (color, point)
# parse Mesh 2
def parseMesh2(self, entry):
N=len(entry)
sfVectors = '\tpoints 3\n'
transIdx = entry.find('transmit') #hard coded the space.
if transIdx!=-1:
i=transIdx+len('transmit')
while entry[i].isdigit()!=True: i+=1
j=i
while (entry[j].isdigit() or entry[j]=='.'): j+=1
transmit = float(entry[i:j])*10.0
vertexIdx = entry.find('vertex_vectors')
# parse vertex
for i in xrange(vertexIdx+15, N): #mesh2 { vertex_vectors { 3, <-5.3871469498,-5.4616031647,-69.2255630493>, <-5.5629453659,-6.2845845222,-68.7088241577>, <-5.7161660194,-5.9352922440,-69.4062881470>}
if entry[i]=='}': # sign for vertex_vectors section end
break
if entry[i]=='<':
j=i+1
while entry[j]!='>':j+=1
point = entry[i+1:j].replace(',', ' ')
sfVectors=sfVectors+'\t\t'+point+'\n'
# for finding the lowest point
self.checkLowestPoint(point.split(' '))
endPoint = j
# parse normals
sfNormals = '\tnormals vertex\n'
normalIdx = entry[endPoint:N].find('normal_vectors')+endPoint
for i in xrange(normalIdx+15, N): #normal_vectors { 3, <-0.8562379479,0.3649974763,0.3655590415>, <-0.8029828072,0.3864040971,0.4537735879>, <-0.8294824362,0.4455040097,0.3368754089>}
if entry[i]=='}': # sign for vertex_vectors section end
break
if entry[i]=='<':
j=i+1
while entry[j]!='>':j+=1
point = entry[i+1:j].replace(',', ' ')
sfNormals=sfNormals+'\t\t'+point+'\n'
# parse texture
endPoint = j
sfShader = ''
pigmentIdx = entry[endPoint:N].find('pigment')+endPoint
for i in xrange(pigmentIdx+7,N): #texture_list { 3, texture { pigment{color rgb<0.00201,0.0000,1.0000> }} ,texture { pigment{color rgb<0.00201,0.0000,1.0000> }} ,texture { pigment{color rgb<0.00201,0.0000,1.0000> }} }
if entry[i]=='<':
j=i+1
while entry[j]!='>': j+=1
color = entry[i+1:j].replace(',', ' ')
#print color
sfShader = self.globalShaderFactory.assignShaderName(color)
break # only one color for one mesh
endPoint = j
# parse face order
sfTriangle = '\ttriangles 1\n'
faceIdx = entry[endPoint:N].find('face_indices')+endPoint
for i in xrange(faceIdx,N): #face_indices { 1, <0,1,2>, 0, 1, 2 } }
if entry[i]=='<':
j=i+1
while entry[j]!='>': j+=1
faces = entry[i+1:j].replace(',', ' ')
#print faces
sfTriangle=sfTriangle+'\t\t'+faces+'\n'
return ('object {\n\tshader %s\n\ttype generic-mesh\n%s%s%s\tuvs none\n}\n') % (sfShader, sfVectors, sfTriangle, sfNormals)
# parse sphere information
def parseSphere(self, entry):
N=len(entry)
transIdx = entry.find('transmit') #hard coded the space.
if transIdx!=-1:
i=transIdx+len('transmit')
while entry[i].isdigit()!=True: i+=1
j=i
while (entry[j].isdigit() or entry[j]=='.'): j+=1
transmit = float(entry[i:j])*10.0
# read center vector
centerIdx = entry.find('<')
for i in xrange(centerIdx,N):
if entry[i]=='>':
center = entry[centerIdx+1:i].replace(',',' ')
# for finding the lowest point
self.checkLowestPoint(center.split(' '))
break
endPoint = i
# read radius
for i in xrange(endPoint, N):
if entry[i].isdigit() == True:
j=i+1
while entry[j].isdigit() or entry[j]=='.': j+=1
radius = entry[i:j]
#print radius
break
endPoint = j
sfShader = ''
pigmentIdx = entry[endPoint:N].find('pigment')+endPoint
for i in xrange(pigmentIdx, N):
if entry[i]=='<':
j=i+1
while entry[j]!='>': j+=1
color = entry[i+1:j].replace(',', ' ')
sfShader = self.globalShaderFactory.assignShaderName(color)
break
return ('\nobject {\n\tshader %s\n\ttype sphere\n\tc %s\n\tr %s\n}') % (sfShader, center, radius)
# parse cylinder information
def parseCylinder(self, entry):
N=len(entry)
vertexIdx = entry.find('vertex_vectors')
# parse vertex
p1Idx = entry.find('<')
for i in xrange(p1Idx,N):
if entry[i]=='>':
p1 = entry[p1Idx+1:i].replace(',',' ')
break
endPoint = i
for i in xrange(endPoint, N):
if entry[i]=='<':
j=i+1
while entry[j]!='>': j+=1
p2 = entry[i+1:j].replace(',',' ')
break
endPoint = j
for i in xrange(endPoint, N):
if entry[i].isdigit()==True:
j=i+1
while entry[j].isdigit() or entry[j]=='.': j+=1
radius = entry[i:j]
break
endPoiint = j
sfShader = ''
pigmentIdx = entry[endPoint:N].find('pigment')+endPoint
for i in xrange(pigmentIdx, N):
if entry[i]=='<':
j=i+1
while entry[j]!='>': j+=1
color = entry[i+1:j].replace(',', ' ')
#print color
sfShader = self.globalShaderFactory.assignShaderName(color)
break
pArray = p2.split(' ')
a = ( [float(pArray[0]),float(pArray[1]),float(pArray[2])] )
pArray = p1.split(' ')
b = ( [float(pArray[0]),float(pArray[1]),float(pArray[2])] )
d = (a[0]-b[0], a[1]-b[1], a[2]-b[2])
r = math.sqrt(d[0]*d[0]+d[1]*d[1]+d[2]*d[2])
scaleu = float(radius)
scalez = r/(2*scaleu) # should be 0.25
center = ((a[0]+b[0])/2, (a[1]+b[1])/2, (a[2]+b[2])/2)
x=d[2]
y=d[0]
z=d[1]
phi = math.atan2(z, math.sqrt(x*x+y*y))
th = math.atan2(y,x)
# thCoor: the norm against which the cylinder should rotates after rotatey
thCoor = th + 1.5708 # pi/2
nz = math.cos(thCoor)
nx = math.sin(thCoor)
ny =0
# object {
# shader sh.0
# transform {
# scale 1 1 1.2228
# scaleu 0.25
# rotatey 48.4996
# rotate 0.6626 0 -0.7490 117.3103
# translate -0.8666 0.8980 -21.9849
# }
# type cylinder
# }
return ('\nobject {\n\tshader %s\n\ttransform {\n\t\tscale 1 1 %f\n\t\tscaleu %f\n\t\trotatey %f\n\t\trotate %f %f %f %f\n\t\ttranslate %f %f %f\n\t}\n\ttype cylinder\n}') % (sfShader, scalez, scaleu, 180*th/3.1415926, nx, ny, nz, 180-180*phi/3.1415926, center[0], center[1], center[2])
