From: Gary S. <st...@nm...> - 2001-08-13 20:14:49
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Hello, I'm new to this list, but have been using Visual Python for a while and find it to be an outstanding tool. I have been working on a fairly complex project with it, and have one question that I can't seem to find an answer to in either the doc or the archives. Is there _any_ way (direct or indirect) to specify the exact position of the camera in 3D coordinates? Apparently the camera orientation can only be changed with scene.center, but how about the position? The scene.mouse.camera attribute is read-only, so the doc says to change scene.center and scene.forward to change the camera position. While the camera position does change when I change those 2 controls, I still have been unable put the camera where I want it (e.g., to put the camera back where it started prior to a user mouse-zooming around). Perhaps this is related to the fact that I don't understand how the camera is positioned in the first place. At the bottom of this e-mail I've attached a very simple example that shows where the camera is located as one mouse-zooms around. Why does the camera start at [0,0,3]? And how, after some zooming, could I put it back there? Setting scene.center and scene.forward to their initial conditions (after a mouse-move) does not put the camera back at [0,0,3] ... Any pointers or clarification would be greatly appreciated. Cheers, Gary Strangman from visual import * sphere() scene.autoscale = 0 scene.autocenter = 0 old = (0,0,0) while 1: if old[0]<>scene.mouse.camera[0] or old[1]<>scene.mouse.camera[1] or old[2]<>scene.mouse.camera[2]: print scene.mouse.camera, scene.center, scene.forward, scene.up, scene.fov old = scene.mouse.camera -------------------------------------------------------------- Gary Strangman, PhD | Neural Systems Group Office: 617-724-0662 | Massachusetts General Hospital Fax: 617-726-4078 | 13th Street, Bldg 149, Room 9103 st...@nm... | Charlestown, MA 02129 http://www.nmr.mgh.harvard.edu/Neural_Systems_Group/gary/ |