def write_povrayscene_file(self):
"""
Writes a POV-Ray Scene file of the current scene in the GLPane to the POV-Ray Scene Files directory.
If successful, returns errorcode=0 and the absolute path of povrayscene file.
Otherwise, returns errorcode=1 with text describing the problem writing the file.
"""
ini, pov, out = self.get_povfile_trio() # pov includes the POV-Ray Scene Files directory in its path.
if not ini:
return 1, "Can't get POV-Ray Scene filename"
#print "write_povrayscene_file(): povrayscene_file=", pov
writepovfile(self.assy.part, self.assy.o, pov)
return 0, pov
def write_povrayscene_file(self):
"""
Writes a POV-Ray Scene file of the current scene in the GLPane to the POV-Ray Scene Files directory.
If successful, returns errorcode=0 and the absolute path of povrayscene file.
Otherwise, returns errorcode=1 with text describing the problem writing the file.
"""
ini, pov, out = self.get_povfile_trio(
) # pov includes the POV-Ray Scene Files directory in its path.
if not ini:
return 1, "Can't get POV-Ray Scene filename"
#print "write_povrayscene_file(): povrayscene_file=", pov
writepovfile(self.assy.part, self.assy.o, pov)
return 0, pov
def raytrace_scene(self, tmpscene=False):
"""
Render scene.
If tmpscene is False, the INI and pov files are written to the 'POV-Ray Scene Files' directory.
If tmpscene is True, the INI and pov files are written to a temporary directory (~/Nanorex/POV-Ray).
Callers should set <tmpscene> = True when they want to render the scene but don't need to
save the files and create a POV-Ray Scene node in the MT (i.e. 'View > POV-Ray').
The caller is responsible for adding the POV-Ray Scene node (self) to the model tree, if desired.
Prints any necessary error messages to history; returns nothing.
"""
#bruce 060710 corrected inaccuracies in docstring
cmd = greenmsg("POV-Ray: ")
if env.debug():
#bruce 060707 (after Windows A8, before Linux/Mac A8)
# compromise with what's best, so it can be ok for A8 even if only on some platforms
env.history.message(_graymsg("POV-Ray: "))
env.history.h_update()
env.history.widget.update(
) ###@@@ will this help? is it safe? should h_update do it?
ini, pov, out = self.get_povfile_trio(tmpscene)
if not ini:
## return 1, "Problem getting POV-Ray filename trio."
# [bruce 060710 replaced the above with the following, since it no longer matches the other return statements, or any calls]
env.history.message(
cmd + redmsg("Problem getting POV-Ray filename trio."))
###e should fix this to improve the message, by including errortext from get_povfile_trio retval (which is nim)
return
if tmpscene or not os.path.isfile(self.povrayscene_file):
# write a new .pov file and save its name in self
#
#bruce 060711 comment (about a bug, not yet reported): ###@@@
# If an existing pov file has unexpectedly gone missing,
# this code (I think) rerenders the current model, without even informing the user of the apparent error.
# That is extremely bad behavior, IMHO. What it ought to do is put up a dialog to inform the
# user that the file is missing, and allow one of three actions: cancel, rerender current model,
# or browse for the file to try to find it. If that browse is cancelled, it should offer the other
# options, or if that finds the file but it's external, it should offer to copy it or make an
# external link (or cancel), and then to continue or do no more. All this is desirable for any kind
# of file node, not just PovrayScene. As it is, this won't be fixed for Mac A8; don't know about 8.1.
self.povrayscene_file = pov
writepovfile(self.assy.part, self.assy.o, self.povrayscene_file)
# bruce 060711 question (possible bug): what sets self.width, self.height, self.output_type in this case,
# if the ones used by writepovfile differ from last time they were set in this node?
# Guess: nothing does (bug, not yet reported). ###@@@
# figure out renderer to use (POV-Ray or MegaPOV), its path, and its include_dir
# (note: this contains most of the error checks that used to be inside launch_povray_or_megapov)
# [bruce 060711 for Mac A8]
win = self.assy.w
ask_for_help = True # give user the chance to fix problems in the prefs dialog
errorcode, errortext_or_info = decode_povray_prefs(win,
ask_for_help,
greencmd=cmd)
if errorcode:
errortext = errortext_or_info
env.history.message(
cmd + redmsg(errortext)
) # redmsg in Mac A8, orangemsg in Windows A8 [bruce 060711]
return
info = errortext_or_info
(program_nickname, program_path, include_dir) = info
pov = self.povrayscene_file ###k btw, is this already true?
#k is out equal to whatever in self might store it, if anything? maybe it's not stored in self.
write_povray_ini_file(ini, pov, out, info, self.width, self.height,
self.output_type)
if tmpscene:
msg = "Rendering scene. Please wait..."
else:
msg = "Rendering raytrace image from POV-Ray Scene file. Please wait..."
env.history.message(cmd + msg)
env.history.h_update(
) #bruce 060707 (after Windows A8, before Linux/Mac A8): try to make this message visible sooner
# (doesn't work well enough, at least on Mac -- do we need to emit it before write_povray_ini_file?)
env.history.widget.update(
) ###@@@ will this help? is it safe? should h_update do it?
###e these history widget updates fail to get it to print. Guess: we'd need qapp process events. Fix after Mac A8.
# besides, we need this just before the launch call, not here.
if os.path.exists(
out
): #bruce 060711 in Mac A8 not Windows A8 (probably all of Mac A8 code will also be in Linux A8)
#e should perhaps first try moving the file to a constant name, so user could recover it manually if they wanted to
#e (better yet, we should also try to avoid this situation when choosing the filename)
msg = "Warning: image file already exists; removing it first [%s]" % out
env.history.message(cmd + orangemsg(msg))
try:
os.remove(out)
except:
# this code was tested with a fake exception [060712 1041am]
msg1 = "Problem removing old image file"
msg2a = " [%s]" % out
msg2b = "-- will try to overwrite it, "\
"but undetected rendering errors might leave it unchanged [%s]" % out
print_compact_traceback("%s: " % (msg1 + msg2a))
msg = redmsg(msg1) + msg2b
#e should report the exception text in the history, too
env.history.message(msg)
pass
# Launch raytrace program (POV-Ray or MegaPOV)
errorcode, errortext = launch_povray_or_megapov(win, info, ini)
if errorcode:
env.history.message(
cmd + redmsg(errortext)
) # redmsg in Mac A8, orangemsg in Windows A8 [bruce 060711]
return
#bruce 060707 (after Windows A8, before Linux/Mac A8): make sure the image file exists.
# (On Mac, on that date [not anymore, 060710], we get this far (no error return, or maybe another bug hid one),
# but the file is not there.)
if not os.path.exists(out):
msg = "Error: %s program finished, but failed to produce expected image file [%s]" % (
program_nickname, out)
env.history.message(cmd + redmsg(msg))
return
env.history.message(cmd + "Rendered image: " + out)
# Display image in a window.
imageviewer = ImageViewer(out, win)
#bruce 060707 comment: if the file named <out> doesn't exist, on Mac,
# this produces a visible and draggable tiny window, about 3 pixels wide and maybe 30 pixels high.
imageviewer.display()
return # from raytrace_scene out
def raytrace_scene(self, tmpscene = False):
"""
Render scene.
If tmpscene is False, the INI and pov files are written to the 'POV-Ray Scene Files' directory.
If tmpscene is True, the INI and pov files are written to a temporary directory (~/Nanorex/POV-Ray).
Callers should set <tmpscene> = True when they want to render the scene but don't need to
save the files and create a POV-Ray Scene node in the MT (i.e. 'View > POV-Ray').
The caller is responsible for adding the POV-Ray Scene node (self) to the model tree, if desired.
Prints any necessary error messages to history; returns nothing.
"""
#bruce 060710 corrected inaccuracies in docstring
cmd = greenmsg("POV-Ray: ")
if env.debug():
#bruce 060707 (after Windows A8, before Linux/Mac A8)
# compromise with what's best, so it can be ok for A8 even if only on some platforms
env.history.message(_graymsg("POV-Ray: "))
env.history.h_update()
env.history.widget.update() ###@@@ will this help? is it safe? should h_update do it?
ini, pov, out = self.get_povfile_trio(tmpscene)
if not ini:
## return 1, "Problem getting POV-Ray filename trio."
# [bruce 060710 replaced the above with the following, since it no longer matches the other return statements, or any calls]
env.history.message(cmd + redmsg("Problem getting POV-Ray filename trio."))
###e should fix this to improve the message, by including errortext from get_povfile_trio retval (which is nim)
return
if tmpscene or not os.path.isfile(self.povrayscene_file):
# write a new .pov file and save its name in self
#
#bruce 060711 comment (about a bug, not yet reported): ###@@@
# If an existing pov file has unexpectedly gone missing,
# this code (I think) rerenders the current model, without even informing the user of the apparent error.
# That is extremely bad behavior, IMHO. What it ought to do is put up a dialog to inform the
# user that the file is missing, and allow one of three actions: cancel, rerender current model,
# or browse for the file to try to find it. If that browse is cancelled, it should offer the other
# options, or if that finds the file but it's external, it should offer to copy it or make an
# external link (or cancel), and then to continue or do no more. All this is desirable for any kind
# of file node, not just PovrayScene. As it is, this won't be fixed for Mac A8; don't know about 8.1.
self.povrayscene_file = pov
writepovfile(self.assy.part, self.assy.o, self.povrayscene_file)
# bruce 060711 question (possible bug): what sets self.width, self.height, self.output_type in this case,
# if the ones used by writepovfile differ from last time they were set in this node?
# Guess: nothing does (bug, not yet reported). ###@@@
# figure out renderer to use (POV-Ray or MegaPOV), its path, and its include_dir
# (note: this contains most of the error checks that used to be inside launch_povray_or_megapov)
# [bruce 060711 for Mac A8]
win = self.assy.w
ask_for_help = True # give user the chance to fix problems in the prefs dialog
errorcode, errortext_or_info = decode_povray_prefs(win, ask_for_help, greencmd = cmd)
if errorcode:
errortext = errortext_or_info
env.history.message(cmd + redmsg(errortext)) # redmsg in Mac A8, orangemsg in Windows A8 [bruce 060711]
return
info = errortext_or_info
(program_nickname, program_path, include_dir) = info
pov = self.povrayscene_file ###k btw, is this already true?
#k is out equal to whatever in self might store it, if anything? maybe it's not stored in self.
write_povray_ini_file(ini, pov, out, info, self.width, self.height, self.output_type)
if tmpscene:
msg = "Rendering scene. Please wait..."
else:
msg = "Rendering raytrace image from POV-Ray Scene file. Please wait..."
env.history.message(cmd + msg)
env.history.h_update() #bruce 060707 (after Windows A8, before Linux/Mac A8): try to make this message visible sooner
# (doesn't work well enough, at least on Mac -- do we need to emit it before write_povray_ini_file?)
env.history.widget.update() ###@@@ will this help? is it safe? should h_update do it?
###e these history widget updates fail to get it to print. Guess: we'd need qapp process events. Fix after Mac A8.
# besides, we need this just before the launch call, not here.
if os.path.exists(out): #bruce 060711 in Mac A8 not Windows A8 (probably all of Mac A8 code will also be in Linux A8)
#e should perhaps first try moving the file to a constant name, so user could recover it manually if they wanted to
#e (better yet, we should also try to avoid this situation when choosing the filename)
msg = "Warning: image file already exists; removing it first [%s]" % out
env.history.message(cmd + orangemsg(msg))
try:
os.remove(out)
except:
# this code was tested with a fake exception [060712 1041am]
msg1 = "Problem removing old image file"
msg2a = " [%s]" % out
msg2b = "-- will try to overwrite it, "\
"but undetected rendering errors might leave it unchanged [%s]" % out
print_compact_traceback("%s: " % (msg1 + msg2a))
msg = redmsg(msg1) + msg2b
#e should report the exception text in the history, too
env.history.message(msg)
pass
# Launch raytrace program (POV-Ray or MegaPOV)
errorcode, errortext = launch_povray_or_megapov(win, info, ini)
if errorcode:
env.history.message(cmd + redmsg(errortext)) # redmsg in Mac A8, orangemsg in Windows A8 [bruce 060711]
return
#bruce 060707 (after Windows A8, before Linux/Mac A8): make sure the image file exists.
# (On Mac, on that date [not anymore, 060710], we get this far (no error return, or maybe another bug hid one),
# but the file is not there.)
if not os.path.exists(out):
msg = "Error: %s program finished, but failed to produce expected image file [%s]" % (program_nickname, out)
env.history.message(cmd + redmsg(msg))
return
env.history.message(cmd + "Rendered image: " + out)
# Display image in a window.
imageviewer = ImageViewer(out, win)
#bruce 060707 comment: if the file named <out> doesn't exist, on Mac,
# this produces a visible and draggable tiny window, about 3 pixels wide and maybe 30 pixels high.
imageviewer.display()
return # from raytrace_scene out
