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 CAD / Development / 10962 (-40)
  Re: Convert to Wavefront object?
 
(...) the program. Travis informed me that LDview can also convert to 3DS and OBJ, so I'll try that. -Mike (15 years ago, 13-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) Michael Heidemann's Inliner should do the job fine! (URL) Philo (15 years ago, 12-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) That's what I suspected. Do you know how to meake all the parts/primitives inline? -Mike (15 years ago, 12-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) Sorry about that, the program may only work with the geometry so all the parts/primitves would probably need to be inlined. It also may need to have a DAT extention rather than MPD. (15 years ago, 11-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) there are no error messages. here's the command line I'm using: 3dto3d minifig.mpd /if9 /of19 /dminifig.obj /ov /ip"J:\ProgsWin\LDraw\parts" /ip"J:\ProgsWin\LDraw\p" I'm assuming it has something to do with it not finding the parts/primitives. (...) (15 years ago, 11-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) Textures are more widely supported in programs where users actually interact/play with 3D models, though. So you are limited basically to rendering still images or animations. Stefan Garcia wrote: (...) animations, however. This is what I want (...) (15 years ago, 11-Apr-09, to lugnet.cad.dev)
 
  Re: Orion or Carsten: please contact me regarding LDDP
 
(...) Thanks Willy. That explains a lot. I knew he was in the navy, but thought I'd seen more posts from him relatively recently. (...) That's OK. My suggestion requires coding, so my contacting Carsten won't be too useful if he's no longer coding (...) (15 years ago, 10-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
The materials are imported properly into Blender, but whether they would be exported as .obj is a guess on my part. Materials are better in this case, not textures. As for Blender being a "pig" program, it's a 9MB download that is completely free, (...) (15 years ago, 10-Apr-09, to lugnet.cad.dev)
 
  Re: Orion or Carsten: please contact me regarding LDDP
 
(...) Orion is on duty. (...) No he doesn't - Orion is the only coder right now. I was able to contact Carsten to sign the Third Party Agreement for the AIOI though - let me know if you want his new address anyway. w. (15 years ago, 10-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) I was hoping not to have to install another pig application package just to do a conversion. Also, are the materials imported properly? Ideally they would be converted to textures since they are more common. -Mike (15 years ago, 10-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
(...) 3Dto3D bt Thomas Baier works pretty well as it has support for converting between LDraw DAT files to Wavefront OBJ as well as several other formats. You can get it at: h(URL) (15 years ago, 10-Apr-09, to lugnet.cad.dev)
 
  Re: Convert to Wavefront object?
 
You could import the files into Blender3D and export them to .obj format. It probably won't look very pretty though. -Stefan- (15 years ago, 10-Apr-09, to lugnet.cad.dev)
 
  Convert to Wavefront object?
 
Is there a free means of converting LDraw models to Wavefront object (*.obj) files? Thanks! -Mike (15 years ago, 9-Apr-09, to lugnet.cad.dev)
 
  Orion or Carsten: please contact me regarding LDDP
 
(...) I haven't gotten anything from Orion. Carsten, do you still work on LDDP? I seem to remember you don't, but if you do, send me an email, and I'll let you know what my suggestion is. --Travis (15 years ago, 9-Apr-09, to lugnet.cad.dev)
 
  Re: POV-Ray help needed
 
(...) I forgot the beginning of this thread, and misunderstood your "15% faster" comment. I see now that you're referring to the flattened mesh2 data for the part. I was mis-reading it to be that mesh2 is 15% faster than mesh (which I know you never (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
 
  Re: POV-Ray help needed
 
(...) Thanks for the info. I have implemented mesh2 support in LDView's export as part of my new curve smoothing support for POV exports, but haven't completely removed the mesh support (although it is currently hard-coded to use mesh2 whether or (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
 
  Re: POV-Ray help needed
 
(...) Hi Travis, I've finally picked up the povray export project again, You were right I needed to calculate the horizontal fov from the vertical one used in OpenGL. Also you may be interested in knowing that I now also have a basic "hierarchical (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
 
  Orion: please contact me regarding LDDP
 
Sorry for the personal post, but I've sent two emails to Orion without a response to either (the first sent months ago), so I'm concerned that my messages are being swallowed by a SPAM filter. Orion, I had a suggestion for improving the interaction (...) (15 years ago, 4-Apr-09, to lugnet.cad.dev)
 
  XMPD.DLL
 
Some month (or years?) ago I asked for somebody to make a dll that can be used by other software authors to write more easily applications for LDraw files. As there was nobody answering, I started to this myself. As I do not have experience with C (...) (16 years ago, 15-Mar-09, to lugnet.cad.dev)
 
  Re: MPD Wizard 1.0b
 
(...) Thank you! Jetro (16 years ago, 29-Jan-09, to lugnet.cad.dev)
 
  Re: MPD Wizard 1.0b
 
(...) This is now fixed -Orion (16 years ago, 29-Jan-09, to lugnet.cad.dev)
 
  Re: MPD Wizard 1.0b
 
(...) It's been a long time since the last update on this very useful app and, more importantly, the link it could be downloaded from now gives me a "404 not found" error. I have recently included a reference to this great app in an ongoing tutorial (...) (16 years ago, 28-Jan-09, to lugnet.cad.dev)
 
  Re: 3D matrix math question
 
(...) Maybe I'll just automatically disable the scaling when "Show control points" is turned on. I'll definitely disable the scaling when "Show all" is turned on. (...) Having the control lines be a different color won't necessarily help when they (...) (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) Actually the switch turning off condline controls scaling could be a sub-option of "Show control points" and be active only in this case. BTW, could it be possible to show control lines in another color to distinguish them from conditional (...) (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) This is true, and I actually try to work this way, but if you look up the thread to ((URL) here>), you'll see that this bug led to a problem that would be visible in real-world parts if the suggested conditional edge primitive is created. And (...) (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) Fixing this one group of rarely important special cases in an efficient manner is probably not the most valuable use of your time. You could always offer 'condition point compression' as a user-selectable option. Tim (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: LETGUI new version 0.1.0.18
 
(...) Philo just informed me that both versions that I have packed into the setup are the old versions. So I compliled it again with the current (above mentioned) versions of that tools. I am sorry for any trouble this may have caused on your side. (...) (16 years ago, 15-Dec-08, to lugnet.cad.dev)
 
  Re: 3D matrix math question
 
(...) OK, I applied this fix (pulling the control points to be 1 LDU from the first point of the conditional line), and it seems to work. It makes the "Show control points" option under conditional lines less useful, but that's a price I'm willing (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) Well, I know where the camera is, and I can create vectors from the camera to both end-points of the conditional line, and to both control points. I'm pretty sure that the calculation could be done with just this information. However, I'm not (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev)
 
  Re: 3D matrix math question
 
(...) In the case that exhibits the bug, the control points are outside the frustum, but the conditional line itself isn't. So I still need to decide whether or not to draw the conditional line. In this case, it was being drawn at times that it (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) I think you're right. I'll look into that. It seems like the most straightforward, and since it's just a pre-processing step, it shouldn't affect the performance for anything other than model loading. --Travis (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) Is there some 'easy' way to determine if the control points are in or out of frustum? Is there any other way to transform points, without considering the frustum (Well, obviously there is at least one, but it's the long way of calculating the (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev)
 
  Re: 3D matrix math question
 
(...) OK... I think I understand what I was getting at here. When you introduce perspective then the distance of the conditional point from the line becomes important. Eg. if you have a point that is directly behind its line in a perspective free (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) Hmmm... Though I can't quite pin it down I have a suspicion that this has something to do with the spatial reduction cause by projection. What projection matrix are you using? Would a simple solution just be to move the conditional points (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) I am not the best in 3D, but if something outside the view frustum, you do not need to draw that. If you have the special case that only parts of what you should draw are outside the view frustum, I would go to calculate that values for a (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) Actually, the projected points are all that I am checking, and that's how it's supposed to work. (...) No. The way that conditional lines work is that if the two control points lie on the same side of the conditional line on the screen (in (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: 3D matrix math question
 
(...) If I understand correctly you shouldn't be checking on the projection, only on the full 3D transformed points. That means you should check after stage 2.5. You'll need the Z value to work out which side things lie on. Tim (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  3D matrix math question
 
(...) I think I need help. I thought I was using gluProject for the conditional calculations, but discovered that I'm not. I multiple the projection matrix by the model-view matrix to get my transformation matrix, then run the points through that to (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
 
  Re: LETGUI new version 0.1.0.18
 
(...) Thanks! For the record: - Ytruder 1.2 is no longer limited to Y direction and can extrude along x, y or z directions - Intersector 1.3 has a new scaling option that improves result for small parts. Philo (16 years ago, 12-Dec-08, to lugnet.cad.dev)
 
  LETGUI new version 0.1.0.18
 
A new version of LETGUI ((URL) is now available. Support for new commandline options for Ytruder1.2 and Intersector1.3 are added. Have fun! cu mikeheide (16 years ago, 12-Dec-08, to lugnet.cad.dev)


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