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Subject: Various bugs and troubles with Poser animation


Anthony Appleyard ( ) posted Tue, 07 August 2001 at 5:47 AM · edited Wed, 14 August 2024 at 8:34 PM

Attached Link: http://www.buckrogers.demon.co.uk/temp/dkssd8_avi.zip

I made the .AVI at this kink (a super-sized duck catching and swallowing a scuba diver), and I had various troubles making it, including making the bulge go down its throat:- (0) If you want this movie, please download it quickly, as I may delete it soon, as I am short of WWW space. (1) If you saw it on a bigger scale, you would see that the joint between the head and the top neck segment (where a non-curve part is child of a curve part) acted odd as the bulge passed it. "Non-curve part being child of curve part" has caused me a lot of trouble down the years, starting with my flamethrower where the fuel hose joins the back end of the gun part. (2) I made the bulge by parenting 3 magnets to the diver, and they were set to act on all of the duck's neck segments. I needed at least 3 to get the bulge anything like the right shape. (One for the whole bulge; one added to that to make the extra bulk forward caused by his chest and cylinders; one added to that to make the bulk at the front end caused by his head.) (In the various recent CGI dinosaur movies I have never seen any attempt to produce a travelling bulge as anything swallows anything.) (3) One nuisance handcuff for me was that I can't change a part's parent during the animation. I wanted to change the diver's ordinary parent to be nothing, then the duck's head, then each segment of the duck's neck as he went down. That would have let me lower the duck's head before the bulge vanished, like when a real duck swallows a frog. But I couldn't; he had to be parented to the duck's head right through. That is why the duck's head and neck stay rigid until the unfortunate diver has been stowed away for disposal. After that (in movie timeline time) I did this to the diver's time-line: *Break spline at a keyframe. Next frame was another keyframe. Break spline there, and in that keyframe set the diver's scale size very small so he can't be seen*; that is the nearest thing possible to making him disappear, so that it wouldn't matter where he ended up as the duck moved its head afterwards. I did the same in reverse earlier as the duck's head was underwater catching him. (4) If you are animating, try to avoid disturbing an IK-circle. If an IK-circle is disturbed in animating, Poser keeps on switching that IK off and on again as it is writing to the movie file, and the IK-goal may do strange things. E.g. trying to make my rebreather-frogman's breathing bag inflate and deflate as he swam, made his mask come off his face, as the part "bag" was part of an IK-circle. Let us hope that all these tedious IK bugs are cured in Poser 5.


joke ( ) posted Sat, 18 August 2001 at 7:15 AM

The link was down so I could not view the avi. Can you post a couple JPGs that demontrate the problem in Poser.


Anthony Appleyard ( ) posted Mon, 20 August 2001 at 5:44 AM

Attached Link: http://www.buckrogers.demon.co.uk/temp/dkssd8_avi.zip

I have put the .avi back temporarily, zipped, at this link. Please tl me when you have downloaded it.


joke ( ) posted Mon, 20 August 2001 at 6:32 AM

Got it now. Will post later if I come up with anything.


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