Forum: Poser - OFFICIAL


Subject: Cam View limits

Robo2010 opened this issue on Dec 21, 2004 ยท 30 posts


ronstuff posted Sat, 25 December 2004 at 4:43 PM

Hi folks - I've documented all of this, so here is what is REALLY happening and how to work with it. Because of the need to have limits for raytracing, Poser 5 has a preset camera view limit of 1000 Poser Units (8,000 feet). Anything farther away from the camera than that will not show. There is a way to get it to show, by SCALING the camera, but nothing in Poser is that simple ;-) Poser uses different types of cameras. Some orbit around the world origin, some orbit around a selected figure, some orbit around a selected body part and some don't orbit at all because they are isometric views. When you SCALE a camera you are actually scaling its VIEW of the 3D world space - you are not making the camera itself larger or smaller. The CENTER of any such scaling will be the point about which the camera orbits or, in the case of the isometric cameras which have no orbit center, a different standard altogether. In all cases, however, the visible limit is 1000 Poser Native Units from the camera lens (not from the world center or from the orbit center). That is why the numbers above don't seem to correlate because there are compound factors such as camera position and object center confusing the issue. To put it simply, if you want a camera to see FARTHER than 1000 PUs, then you must scale the camera UP. For all of the perspective cameras, the formula is very simple: VibleRange=1000x(100/Camera%Scale). This means if you want to see twice as far (2000 PUs) you must scale the camera by 200%. Scaling the camera to 500% will enable it to see up to 5000 PUs from the camera. But be aware that when working with a camera at any scale other than 100% all camera position DISTANCES (not angles) must be scaled too and INVERSLY to the camera scale. So, to scale a camer up by 200%, but keep it in the same spot, you need to DIVIDE the xTrans, yTrans and zTrans by 2. The nice thing about this is that when using the parameter dials to move the camera, it moves much faster and requires less dial turning to get it where you want it. The ISOMETRIC cameras (Top, Front etc) are different, and require much larger scale factors to get large objects into view. I've used scales as high as 900,000% to work on objects several miles across. Oh, and by the way, although I agree that this is one of the largest Poser props yet, I don't believe it holds the title of THE largest, because the Tycho Space Station project from PoserWorks (formerly IW43D) is more than 2 miles across in actual Poser Scale, and some of my own projects (see next post) are even larger than that.