I got this strange issues. I am modeling landforms using polygon tools. The scale is really large as my model is destined for Maya along with other models by other artists. I have a scale reference model around whichI am building a high resotion geometry. The size is large. For some reason many tools , especcially PolySplit, just do not work at large scales. The do not snap to points, and are not finding their targets. Often it would pick up a point and give me feedback, but it would be so sensitive and unstable that whatever tiny motion is caused by depressing the button, causes the pointer to drift off the target. Other tools are misbehaving in similar fashion. Is there a general sensitivity setting in Preferences to preclude this problem?

Thanx so much

Dave Rindner

Hi David,

How large is your geometry? I tried putting down a 100x100x100 box and was able to polysplit it just fine. Perhaps there is something else. Do you have a test case you can post?

Thanks,
George.

Very large. The animatic reference from Maya 4.5 is in tens of thousands of Maya units. I exported it as OBJ (with no scaling transform).
At hundreds of units, Houdini works just fine, for me also.

Dave

10,000 units?…yowsa!

I might just be blowing smoke here but…could adjusting your clipping planes help…

Tried that 1st. No good. OpenGL was acting WEIRD! with all letters capital.
My interim solution is as follows.
Append Transform SOP to reference geometry and scale (about world center) by .01 using U-Scale slider. Same for hirez geometry.
Before going back to Maya rescale by 100X. its simple and stupid, but at least at 1/100 scale, described problems disappear. I am not sure what the root cause is.

I really dislike critisising SESI or Houdini, as I feel I am in debt to them. But I am convinced that Houdini has real problems with all nVidia cards, from consumer GeForce to high end Quaddros. I think there is a root problem between Houdini and nVidia Detonator drivers. I have used Houdini, at home with Apprentie and Master at clients with Ti and Quaddro cards. Both Athlon, Celeron, and PIV. I have experienced EXACTLY the same OGL problems in all cases. Its not a showstopper, more of an inconvenience. The thing is that Houdini seems to sense when I have not saved for more then 10 mins. and then goes South.

David Rindner

that would be the undocumented SOL OP

my hat is off to you David, you've really been putting Houdini to the test and have stuck with it when many others would have given up…hope thing get smoother for you in the future…

Actually I am working with it on proffessional basis. I am currently in Taiwan on location in Taipei with client as modeling and character TD using Houdini and Maya. Thanx for kind words. BTW, as promised I have submitted the Houdini model project of the centaur creature to SESI. E-mail Bob Magee. Hopefully, they will put it up on SESI FTP.

Dave Rindner

at least at 1/100 scale, described problems disappear. I am not sure what the root cause is.

The problem with large geometry comes down to precision problems. I'll submit that as a bug. Thanks David.

George.