 | | Re: Colinear Vertices
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(...) Something to try. If it works it would help for several shading issues I have seen. See for example around peghole going through curved surface of (URL) Could you send me the LDraw file used to generate 61069s01a1.png? I'll see how (...) You (...) (17 years ago, 13-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) triangle has had its surface normal pulled down. So the triangle isn't co-planar with the quad as far as the lighting is concerned. With curve smoothing, all polygons who share a smoothed vertex use a common surface normal for that vertex. But (...) (17 years ago, 13-Dec-08, to lugnet.cad)
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| | LD4DStudio suggestions?
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Hello all, I was wondering if people have some minor suggestions / bug reports for my current LD4DStudio version. Work on the 1.1 version is taking longer than expected so I was planning to release a bugfix only version this month. Any additional (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Conditional Ring primitive?
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(...) My comment about needing twice the geometry for the edge was based on a misunderstanding of what you wrote. Based on what I now assume you meant, two wouldn't be required for each joint. However, your solution would only work if the cones on (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Conditional Ring primitive?
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(...) It sounds like it would work, but I'm not sure if people would go for it. Of course, if the POTM competitions are anything to go by, you're making a majority of the complicated parts right now, so if you go with it, that's probably all we need (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Conditional Ring primitive?
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(...) Mmhhh... maybe by setting 2 conditional rings on the junction. Each condring would be set between a cylinder and a cone. Scaling the ring would adapt to various cone slopes. Of course 2 rings would be needed, one for converging cones, one for (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Conditional Ring primitive?
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(...) That's a primitive I have been longing for... but I realized it is impossible to build: where would you put the control lines? The top control points would need to be scaled differently from bottom ones to match various cylinders/cones (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Conditional Ring primitive?
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(...) I just noticed something else while investigating a fix for the above problem. The above model could really use a circular conditional edge primitive. I would vote for x-ycedge.dat as the filename (ie 1-4cedge.dat, 4-4cedge.dat, (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) I played with the settings, and I had to set the precision all the way down to 0.133 in order to get it to fully smooth. (0.125 failed to smooth properly.) (...) .005. I think I'll set the precision to .01, to hopefully give it some leeway. I (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) It makes sense! (...) An example, this button: (URL) I rounded condlines to 2 decimal places since I couldn't get smoothing anyway. I did more experiments, with full precision in condline it works: (URL) but after rounding to 3 dp there is no (...) (17 years ago, 12-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) Not that I know of. I'll think about adding a page to the LDView web site. (I don't think it's really appropriate to add it to ldraw.org, since it's LDView-specific.) (...) The precision is 0.0001. I multiply the coordinate by 10000 and then (...) (17 years ago, 11-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) Thanks, Travis. BTW, are there guidelines for part authors that would improve smooth shading? What about precision in coincidence between conditional lines and matching polygon sides? I have seen _many_ instances where a quad should blend into (...) (17 years ago, 11-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) I looked at LDDP sources (very clear BTW!). Threshold is compared against square of cross product of each angle of quad. So it depends of size of quad to 4th power! Not very good imho, but since it works for such a long time I used the same (...) (17 years ago, 11-Dec-08, to lugnet.cad)
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| | Re: SR 3D Builder version 3.2.2.3 just released
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(...) MLCad keyboard controls are not supported since the user interface is totally different and parts are by far much more easy to place and connect MPD saving is not supported, but .L3B format is compatible with .LDR except for some metacommand (...) (17 years ago, 10-Dec-08, to lugnet.cad)
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| | Re: Creator Adventcalender 2004 - Xmas Blog
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(...) Oooo! What fun! Thanks for sharing this. I must admit, I miss the advent calendars like this, with simple pieces because I used to enjoy designing alternate models as the days went on. Remember 1998's set 1298? wow. ten years ago now: (URL) (17 years ago, 11-Dec-08, to lugnet.cad)
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| | Re: Rendering for liberty
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(...) Nice! You could also try wrapping a real photograph of the sunset around a sphere. -Mike (17 years ago, 10-Dec-08, to lugnet.cad, FTX)
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| | Rendering for liberty
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I've been working on honing my skills at the whole rendering thing using many of the tools written by members of this forum and with knowledge gleaned here. I thought it was time to share! I asked my kids which model they would like me to use for a (...) (17 years ago, 10-Dec-08, to lugnet.cad, FTX)
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| | Re: Colinear Vertices
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(...) It depends on what your threshold is but taking the difference (as you do in a cross product) of two big numbers is less accurate (very much so sometimes) than taking the difference of two smaller numbers. Even without this issue it means that (...) (17 years ago, 9-Dec-08, to lugnet.cad)
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| | Re: Colinear Vertices
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(...) No, I just take the cross product, and if the length (squared) is 0, I give an error. I don't see how normalizing the length of the two vectors that I feed into the cross product would improve things much here. Sure, it might mean that my (...) (17 years ago, 9-Dec-08, to lugnet.cad)
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| | Re: SR 3D Builder version 3.2.2.3 just released
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(...) Wow! Very impressive! I will definitely have to try it out. A couple of questions: are MLCAD's keyboard controls supported? Can I export back into LDR/MPD format? What does the model tree look like? -Mike (17 years ago, 9-Dec-08, to lugnet.cad)
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