#1
|
|||
|
|||
orthographic projection question
Hi everyone,
I'm fairly new to Vizard and am working with orthographic projection. I have a basic question. In the program below, the application window has an aspect ratio of 1, as does the width and height of the 100x100 region between the left/right/top/bottom clipping planes in the orthographic projection setup. But when I run the program, the 90x90 vertical quad centered at (0,0,0) doesn't appear centered vertically in the application window. It is slightly displaced in the downward direction, and I don't understand why. (This is causing me problems when I try to connect mouse coordinates in the application window with objects in the scene.) Anyone have an idea why this is happening? Robin import viz # set application window size viz.window.setSize( 700, 700 ) # set mainWindow viz.MainWindow.ortho(-50,50,-50,50,-1,1) viz.MainWindow.clearcolor( viz.BLACK ) viz.startLayer(viz.QUADS) viz.vertexColor(1,0,0) viz.vertex(-45, 45, 0) viz.vertex(-45,-45, 0) viz.vertex( 45,-45, 0) viz.vertex( 45, 45, 0) viz.endLayer() viz.go() |
#3
|
|||
|
|||
Thank you!! That fixed it:-)
Robin |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Different projection matrix per viewpoint | dcnieho | Vizard | 6 | 07-08-2016 05:06 AM |
Regarding 3 Walled Projection queries | rajnishv | Precision Position Tracker (PPT) | 0 | 04-12-2016 06:19 AM |
Projection Matrix (onto oblique near plane) | andrewjworz | Vizard | 1 | 07-13-2012 09:10 AM |
Intermittent orthographic stereo projection problems | AySz88 | Vizard | 10 | 02-17-2012 12:50 PM |
orthographic projection in a head-tracked cave environment | michaelrepucci | Vizard | 5 | 12-14-2011 10:29 AM |