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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>The x3d.py makes no effort to correct author errors. That is up to the author. Trying to “fix” things further can lead to further problems and a corrupted model.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There are a great many models in X3D Examples with DEF and USE which run properly in unit tests.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There are several diagnostics built in for reporting errors. Have you tested your erroneous scene to see what you get? If a further error diagnostic is needed, we can add it to the X3DPSAIL TODO list. If you write a python method to do that, we can test it further and possibly integrate it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>X3D Python Scene Access Interface Library (X3DPSAIL), TODO<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>https://www.web3d.org/x3d/stylesheets/python/python.html#TODO<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If a correct model is getting exported into another form incorrectly, then we can diagnose and fix the conversion. As ever, use-case examples of such errors are essential to continuing progress.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for all efforts with X3D Python.<o:p></o:p></p><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New"'>all the best, Don<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New"'>-- <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New"'>Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New"'>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New"'>X3D graphics, virtual worlds, navy robotics https://faculty.nps.edu/brutzman<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> GPU Group <gpugroup@gmail.com> <br><b>Sent:</b> Monday, October 16, 2023 9:49 AM<br><b>To:</b> John Carlson <yottzumm@gmail.com><br><b>Cc:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu>; Joe D Williams <joedwil@earthlink.net>; Peitso, Loren (CIV) <lepeitso@nps.edu>; X3D Graphics public mailing list <x3d-public@web3d.org><br><b>Subject:</b> Re: Thoughts for x3d.py str() calls<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal>correction first output is <o:p></o:p></p><div><div><p class=MsoNormal> <Scene><o:p></o:p></p></div><div><p class=MsoNormal> <Group DEF='A'><o:p></o:p></p></div><div><p class=MsoNormal> <Transform DEF='C'/><o:p></o:p></p></div><div><p class=MsoNormal> </Group><o:p></o:p></p></div><div><p class=MsoNormal> <Group DEF='B'><o:p></o:p></p></div><div><p class=MsoNormal> <Transform DEF='C'/><o:p></o:p></p></div><div><p class=MsoNormal> </Group><o:p></o:p></p></div></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, Oct 16, 2023 at 10:32 AM GPU Group <<a href="mailto:gpugroup@gmail.com">gpugroup@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><div><div><div><p class=MsoNormal>That may relate to the DEF USE issue with X3D.py: <o:p></o:p></p><div><p class=MsoNormal>x x3d.py makes no effort to conjugate DEF and USE and properly order DEF before USE in its export stream<o:p></o:p></p></div><div><p class=MsoNormal>- not a common problem unless a node has 2 fields that take the same node (directly SF or indirectly in MFNode descendent field)<o:p></o:p></p></div><div><p class=MsoNormal>x it's a problem with HAnimHumanoid which has coordinate and skin fields, which typically involve the same Coordinate node<o:p></o:p></p></div><div><p class=MsoNormal>- tinkering can be done in the blender exporter, to do a USE before a DEF, but with inconvenience and messy code<o:p></o:p></p></div><div><p class=MsoNormal>If a call can be made in x3d.py before exporting a DEF or USE, then that function can be over-ridden to take responsibility for DEF USE conjugation and correct output ordering something like this:<o:p></o:p></p></div><div><p class=MsoNormal>node = getDefOrUse(node, node.DEF, node.USE)<o:p></o:p></p></div><div><p class=MsoNormal>and for the x3d.py default it would just return the same element (or node), and overrides can do something more sophisticated.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>more..<o:p></o:p></p></div><div><p class=MsoNormal>DEF USE NON-CONJUGATION IN X3D.PY<o:p></o:p></p></div><div><p class=MsoNormal>test_def.py<o:p></o:p></p></div><div><div><p class=MsoNormal>x3d = X3D()<o:p></o:p></p></div><div><p class=MsoNormal>scene = Scene()<o:p></o:p></p></div><div><p class=MsoNormal>x3d.Scene = scene<o:p></o:p></p></div><div><p class=MsoNormal>grpa = Group(DEF='A')<o:p></o:p></p></div><div><p class=MsoNormal>grpb = Group(DEF='B')<o:p></o:p></p></div><div><p class=MsoNormal>scene.children.append(grpa)<o:p></o:p></p></div><div><p class=MsoNormal>scene.children.append(grpb)<o:p></o:p></p></div><div><p class=MsoNormal>trans = Transform(DEF='C')<o:p></o:p></p></div><div><p class=MsoNormal>grpb.children.append(trans)<o:p></o:p></p></div><div><p class=MsoNormal>grpa.children.append(trans)<o:p></o:p></p></div><div><p class=MsoNormal>blob = x3d.XML()<o:p></o:p></p></div><div><p class=MsoNormal>fp = open("dump.x3d","w+")<o:p></o:p></p></div><div><p class=MsoNormal>fp.write(blob)<o:p></o:p></p></div><div><p class=MsoNormal>fp.close()<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>output:<o:p></o:p></p></div><div><div><p class=MsoNormal><?xml version="1.0" encoding="UTF-8"?><o:p></o:p></p></div><div><p class=MsoNormal><!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "<a href="https://www.web3d.org/specifications/x3d-4.0.dtd" target="_blank">https://www.web3d.org/specifications/x3d-4.0.dtd</a>"><o:p></o:p></p></div><div><p class=MsoNormal><X3D profile='Full' version='4.0' xmlns:xsd='<a href="https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema-instance&data=05%7C01%7Cbrutzman%40nps.edu%7C5c09532fc6784acf636108dbce67ceb2%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C638330717470356414%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=yglIKBZsT6BoJS9%2BDnaKptd%2FEdy4pnjHp4KFFEuFFLQ%3D&reserved=0" target="_blank">http://www.w3.org/2001/XMLSchema-instance</a>' xsd:noNamespaceSchemaLocation='<a href="https://www.web3d.org/specifications/x3d-4.0.xsd" target="_blank">https://www.web3d.org/specifications/x3d-4.0.xsd</a>'><o:p></o:p></p></div><div><p class=MsoNormal> <Scene><o:p></o:p></p></div><div><p class=MsoNormal> <Group DEF='A'><o:p></o:p></p></div><div><p class=MsoNormal> <Transform USE='C'/><o:p></o:p></p></div><div><p class=MsoNormal> </Group><o:p></o:p></p></div><div><p class=MsoNormal> <Group DEF='B'><o:p></o:p></p></div><div><p class=MsoNormal> <Transform DEF='C'/><o:p></o:p></p></div><div><p class=MsoNormal> </Group><o:p></o:p></p></div><div><p class=MsoNormal> </Scene><o:p></o:p></p></div><div><p class=MsoNormal></X3D><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>test_def_use.py<o:p></o:p></p></div><div><div><p class=MsoNormal>from x3d import *<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>x3d = X3D()<o:p></o:p></p></div><div><p class=MsoNormal>scene = Scene()<o:p></o:p></p></div><div><p class=MsoNormal>x3d.Scene = scene<o:p></o:p></p></div><div><p class=MsoNormal>grpa = Group(DEF='A')<o:p></o:p></p></div><div><p class=MsoNormal>grpb = Group(DEF='B')<o:p></o:p></p></div><div><p class=MsoNormal>scene.children.append(grpa)<o:p></o:p></p></div><div><p class=MsoNormal>scene.children.append(grpb)<o:p></o:p></p></div><div><p class=MsoNormal>trans = Transform(DEF='C')<o:p></o:p></p></div><div><p class=MsoNormal>grpb.children.append(trans)<o:p></o:p></p></div><div><p class=MsoNormal>grpa.children.append(trans)<o:p></o:p></p></div><div><p class=MsoNormal>blob = x3d.XML()<o:p></o:p></p></div><div><p class=MsoNormal>fp = open("dump.x3d","w+")<o:p></o:p></p></div><div><p class=MsoNormal>fp.write(blob)<o:p></o:p></p></div><div><p class=MsoNormal>fp.close()<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>output:<o:p></o:p></p></div><div><div><p class=MsoNormal><?xml version="1.0" encoding="UTF-8"?><o:p></o:p></p></div><div><p class=MsoNormal><!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 4.0//EN" "<a href="https://www.web3d.org/specifications/x3d-4.0.dtd" target="_blank">https://www.web3d.org/specifications/x3d-4.0.dtd</a>"><o:p></o:p></p></div><div><p class=MsoNormal><X3D profile='Full' version='4.0' xmlns:xsd='<a href="https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema-instance&data=05%7C01%7Cbrutzman%40nps.edu%7C5c09532fc6784acf636108dbce67ceb2%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C638330717470512654%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=C1CiwnRN22BrRL7097t92ojvanIkKyb8xlQeolJXaGc%3D&reserved=0" target="_blank">http://www.w3.org/2001/XMLSchema-instance</a>' xsd:noNamespaceSchemaLocation='<a href="https://www.web3d.org/specifications/x3d-4.0.xsd" target="_blank">https://www.web3d.org/specifications/x3d-4.0.xsd</a>'><o:p></o:p></p></div><div><p class=MsoNormal> <Scene><o:p></o:p></p></div><div><p class=MsoNormal> <Group DEF='A'><o:p></o:p></p></div><div><p class=MsoNormal> <Transform USE='C'/><o:p></o:p></p></div><div><p class=MsoNormal> </Group><o:p></o:p></p></div><div><p class=MsoNormal> <Group DEF='B'><o:p></o:p></p></div><div><p class=MsoNormal> <Transform DEF='C'/><o:p></o:p></p></div><div><p class=MsoNormal> </Group><o:p></o:p></p></div><div><p class=MsoNormal> </Scene><o:p></o:p></p></div><div><p class=MsoNormal></X3D><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, Oct 16, 2023 at 10:09 AM GPU Group <<a href="mailto:gpugroup@gmail.com" target="_blank">gpugroup@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal>It seems possible to override functions in python, if there are just a few to override. <o:p></o:p></p><div><p class=MsoNormal>And one suggestion for x3d.py imperfections is to apply fixes at runtime in some initialization function.<o:p></o:p></p></div><div><p class=MsoNormal>- that assumes/requires just a few target functions, not 480 functions that need to be repaired<o:p></o:p></p></div><div><p class=MsoNormal>- so for some fixes it may be helpful to change the upstream x3d.py to call a function that can be easily replaced.<o:p></o:p></p></div><div><p class=MsoNormal>-Doug<o:p></o:p></p></div><div><p class=MsoNormal>Example:<o:p></o:p></p></div><div><p class=MsoNormal>file myclass.py <o:p></o:p></p><div><div><p class=MsoNormal>class Wonky:<o:p></o:p></p></div><div><p class=MsoNormal> def __init__(self):<o:p></o:p></p></div><div><p class=MsoNormal> self.color = "Red"<o:p></o:p></p></div><div><p class=MsoNormal> def func1(self, color :str) -> bool:<o:p></o:p></p></div><div><p class=MsoNormal> if color == self.color:<o:p></o:p></p></div><div><p class=MsoNormal> return True<o:p></o:p></p></div><div><p class=MsoNormal> return False<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>file override.py<o:p></o:p></p></div><div><div><p class=MsoNormal>from myclass import *<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>mc = Wonky()<o:p></o:p></p></div><div><p class=MsoNormal>print("match with Blue? "+str(mc.func1("Blue")))<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>def func2(self, color: str) -> bool:<o:p></o:p></p></div><div><p class=MsoNormal> if self.color != color:<o:p></o:p></p></div><div><p class=MsoNormal> return True<o:p></o:p></p></div><div><p class=MsoNormal> return False<o:p></o:p></p></div><div><p class=MsoNormal>Wonky.func1 = func2 # <<<<<<<<<<<< OVERRIDE<o:p></o:p></p></div><div><p class=MsoNormal>print("don't match with Blue? "+str(mc.func1("Blue")))<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>output:<o:p></o:p></p></div><div><div><p class=MsoNormal>match with Blue? False<o:p></o:p></p></div><div><p class=MsoNormal>don't match with Blue? True<o:p></o:p></p></div></div><div><p class=MsoNormal>-Doug<o:p></o:p></p></div></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, Oct 16, 2023 at 9:55 AM John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>Instead of calling str() to print out a value, call a function that does precision floating point formatting on floats according to a user’s wishes. If the value is a list, call the function recursively with a list comprehension, otherwise, call str. <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I think this is doable by mere humans.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>John<o:p></o:p></p></div></blockquote></div></blockquote></div></blockquote></div></div></div></body></html>