 | | James Jessiman's Unofficial LEGO® Pages - The Original???
|
|
hi folks, tell me that I'm not dreaming: (URL) some of the oldtimers please confirm that they authentic? w. (17 years ago, 13-Jul-07, to lugnet.cad, lugnet.cad.dev.org.ldraw)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
(...) Roland, Actually the errors wouldn't be a problem. I wasn't thinking of performing transformations on already-transformed data. I was thinking of performing transformations on the original vertex data, then storing that (as a separate set of (...) (17 years ago, 13-Jul-07, to lugnet.cad)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
(...) Thanks Travis, that's *exactly* the info I was looking for. I think I'm going to go ahead and store each object's matrix, as well as the camera and projection matrices, updating any of them only when adjustments are made to the appropriate (...) (17 years ago, 13-Jul-07, to lugnet.cad, FTX)
|
| |
| | Re: Search path question
|
|
(...) Hi Roland, Thanks for the input. Has anyone else implemented the mechanism the way Roland has? Kevin (17 years ago, 13-Jul-07, to lugnet.cad.dev)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
(...) Well thanks for spoiling my day :) I tried orions file and discovered a design flow in my new LD4DStudio renderer. It looks like this: (URL) seems Orion uses the rotation matrix to mirror some parts, this totally F-ups my normals :( And there (...) (17 years ago, 13-Jul-07, to lugnet.cad)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
(...) Sorry. I guess I didn't fully understand why you wanted to do the pre-multiplies. Hopefully this reply will be closer to what you are looking for. LDView 1.0 did exactly what you suggest. It calculated the final coordinates for every single (...) (17 years ago, 13-Jul-07, to lugnet.cad, FTX)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
(...) Travis, Thanks, but that answer is exactly what I was trying to avoid in this discussion. I understand about creating a transformation matrix, a camera matrix and a projection/perspective matrix. I understand about compositing them all for a (...) (17 years ago, 13-Jul-07, to lugnet.cad, FTX)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
(...) Actually, based on what you write after the above, this is a "How do you draw in 3D?" question, which is fairly close to "How do you do 3D?". The implementation details of how 3D gets drawn to the screen tend to answer all your questions. When (...) (17 years ago, 13-Jul-07, to lugnet.cad, FTX)
|
| |
| | Re: 3D Transformations Architecture Question
|
|
Basically you keep 1 copy of the object with its vertices in their original position (local or model space). You take the local to world, world to view, view to projection and projection to viewport matrices and multiply them to get a single (...) (17 years ago, 13-Jul-07, to lugnet.cad)
|
| |
| | Re: Search path question
|
|
(...) The way I understand the file handeling system, this should not load. Because every file's references must be handled relative from the file being loaded (not to the main file). So calling sub/sub2.ldr from sub/sub1.ldr will look at (...) (17 years ago, 13-Jul-07, to lugnet.cad.dev)
|
| |
| | Re: Search path question
|
|
(...) I would also lean towards always requiring the subdirectory, but am open to argument the other way. ROSCO (17 years ago, 12-Jul-07, to lugnet.cad.dev)
|
| |
| | 3D Transformations Architecture Question
|
|
Feedback from the guys who built the viewers (LDGlite, LDView, etc) would be really great on this. I have a project, not Lego, but similar and I'm writing some software for 3D viewing and manipulation of items. The LDraw architecture is a good match (...) (17 years ago, 12-Jul-07, to lugnet.cad)
|
| |
| | Re: Search path question
|
|
(...) I know that LPub would only know where to find sub2 if it was specified as sub/sub2.ldr. I think if there only being only one current working directory which is the directory where you've placed your top level model file. (...) This seems the (...) (17 years ago, 12-Jul-07, to lugnet.cad.dev)
|
| |
| | Search path question
|
|
I just noticed some unexpected behavior in LDView, and I wanted to ask here whether or not the behavior was right. Suppose you have the following files: TestModel.ldr Sub/Sub1.ldr Sub/Sub2.ldr TestModel.ldr contains a reference to Sub/Sub1.ldr. When (...) (17 years ago, 12-Jul-07, to lugnet.cad.dev)
|
| |
| | Re: LDD goes Technic
|
|
(...) I must say they chose a very creative solution to the issue of how to run cables :) (so as not to tease, each end of a cable is represented by the modular connector and a small length of wire. Colored arrows are used to match up which end runs (...) (17 years ago, 11-Jul-07, to lugnet.general, lugnet.cad)
|
| |
| | LDLink: reversibly merge part libraries
|
|
Hi, folks. After reading some of the recent posts discussing support for unofficial parts and part directories, I decided to release this script I wrote to help manage the unofficial parts I use. I keep my unofficial parts in a parallel part library (...) (17 years ago, 11-Jul-07, to lugnet.cad.dev.mac, lugnet.cad.dev)
|
| |
| | CATEGORY and KEYWORD extension ratified by the LSC
|
|
The LDraw Standards Committee (LSC) has ratified the CATEGORY and KEYWORD language extension. The most major change between the ratified specification and the de-facto standard is to officially move the creation of new part categories away from the (...) (17 years ago, 10-Jul-07, to lugnet.announce, lugnet.cad.dat.parts, lugnet.cad.dev.org.ldraw)
|
| |
| | Re: Convention for directoried for unofficial parts?
|
|
(...) The following files in LDView's source tree contain the LDrawIni stuff: LDLoader/LDrawIni.c LDLoader/LDrawIni.h LDLoader/LDrawInP.h There's a #include <TCFoundation/TCDefines.h> near the top of LDrawIni.c. You can delete that; the only reason (...) (17 years ago, 10-Jul-07, to lugnet.cad.dev)
|
| |
| | Re: Convention for directoried for unofficial parts?
|
|
(...) I'm using Qt, and LPub is under GPL, so this sounds perfect. I'm all for standardization, so this sounds great. (...) I'm not looking to judge or criticize anyone. All of our programming efforts are works in progress, so these self analysis' (...) (17 years ago, 10-Jul-07, to lugnet.cad.dev)
|
| |
| | LDD goes Technic
|
|
OK, it looks like the Mac version isn't quite ready for prime-time, but I'm curious if anybody else has noticed this: (URL) tried it out yet? I've got one model (my NXT remote) already made, and the learning curve was far easier than I expected (it (...) (17 years ago, 10-Jul-07, to lugnet.general, lugnet.cad)
|
