3D perspective stump/dilemma - Solved

cheroxy wrote on 11/4/2006, 6:24 PM
Edit - in order to have each of the 36 frames rotate with a bottom hinge I have to alter the Y offset of the rotation. The default is 0 which means center of the screen. There are 3 videos above the midline and the top of the screen is 240. I divided that by three to get increments of 80. Offsetting each Y rotation by 80 gives a bottom hinge!



Here is the deal. I have been trying to do a PIP w/ 36 videos and have them rotate with a bottom hinge. I have run into the problem of rotating them. Sometimes it works and sometimes it doesn't. I swear I do the same thing, but I get different results.

I can get the result I want in one project, but I can't repeat it in another so my final project will be fine, but this stumps me. I have run into this same problem before with 3D alpha so I thought I would see if anybody can figure this out.

I have simplified the two projects to 1 single track to show the problem. In the veggie "Good" you see the event rotate on a bottom hinge. In the "Bad" veggie you can see how the event rotates around an X-axis that is somewhere in the center of the event.

The only difference that I can put my finger on is perspective. If I slide the event back or to the side in the Bad veggie then it appears to be the same as the good veggie. Is that the difference? How would you make an event that is not so far back in the Z plane appear to be bottom hinged?

To make it even more complicated there is also a third veg file that shows all 36 tracks with some doing a bottom hinge and the rest doing something else. Here, perspective isn't an issue, but I still have seemingly different results w/ the same specs.

Good

Bad

Mix


Please help, thanks,
Carson

Comments

Grazie wrote on 11/4/2006, 10:37 PM
Woah!

First off - WELL DONE! Excellent project - really.

Tell me where is the control that has the 36 FORMATION flying in unison situated? I can't see HOW you have controlled the 36 flip upwards? How have you created that?

garo wrote on 11/5/2006, 2:38 AM
opps . - must have been done in 7 since it will not open in 6 ... :-(
cheroxy wrote on 11/5/2006, 8:19 AM
Here is the version of everything working. It isn't quite done yet, but you will see the checkerboard rotation and the correct bottom hinge on everything. To get the hinge to work correctly I also had to increase the X rotation with each level away from the middle to be more than 90 degrees.

fixed