cyclinggimpe
June 8, 2003 18:22:02
I was working on the Simple Arm Setup tutorial and ran into a problem and can't see what I am doing wrong. I downloaded the hip file and used the start file (which is an arm). I created the bones with Inverse Kinematics and made sure the capture region covered the arm geometry. I then used the “Capture Geometry” tool and clicked on the arm and then clicked on the root of the bone and right clicked and the arm turned the same colour as the bones; therefore, the video said that that is an indication that the geometry capture was successful. Also in the video it stated that when you capture geometry, Houdini will automatically set a keyframe at frame 1 and at frame 300 and the transform, scale and rotation x, y and z's all turn green (keyframed) for the geometry. This is not happening for me. I went through this video a number of times and still Houdini does not set these key frames for me. I tried this in version 5.5 and then also in 6. Can anyone help me please and let me know what I am doing wrong? Am I being stupid here? Thanks.
goldfarb
June 8, 2003 19:21:55
the default changed with 5.5-6.x, I think that kinematics is being calculated differently now so the keyframe at 300 isn't done anymore….
edward can explain it better than I can

but no, you're not being stupid
cyclinggimpe
June 8, 2003 20:13:48
But I am also trying this tutorial in version 5.5 and still can't get the 2 automatic keyframes after I capture geometry. Is there a problem when you have version 5.5 and 6.0 on the same computer? They are both sharing the Home directory but with there own sub-directories.
goldfarb
June 8, 2003 22:51:41
I seem to be following you around today…

not getting the key on the last frame may have changed in 5.5 but after the tutorials were released…I can't remember….but it's no big deal, you don't need the keyframe on the last frame anymore…
the two versions shouldn't have any effect on each other…
cyclinggimpe
June 8, 2003 23:50:20
You know, I re-read your previous answer and I just realized that you meant “in 5.5 and 6.0”, and not “going from 5.5 to 6.0”. So then the tutorials were done prior to 5?
When I made my ball animation, I set a keyframe at 1 and this automatically set one for 300 (this was with version 5.5). I haven't tried this in vs. 6 yet, so I guess you only get the first one set then (I'll try this after writing this).
Edit: I went into version 6 and made a sphere and then set a keyframe at frame 1 and this was the only frame that had a keyframe set (none at 300). I then moved to frame 50 and moved the sphere in X and then up in Y and then looked for the “Commit Change” button and there wasn't one. So I right clicked and selected “commit change” to set another keyframe. Where did the “Commit Change” button go for setting the new keyframe?
Edit 2: I found the same arm tutorial in the on-line user guide for version 6 and worked through it. I still do not get a keyframe set at the beginning; at frame 1, all the transforms etc are the tourquoise colour, not green. Here is what is written in the user guide:
The Capture Frame
The geometry was captured with keyframes set on the capture pose at frame 0. If you go to frame 0, you can move the end effector and therefore adjust the bone positions at the capture frame. This will change your capture solution to use this new pose.
I thought the first frame was 1 not 0, so that is why I had to “commit change” at frame 1 I guess. Oh well, I'll eventually get it I hope.