hi
do you mean something like the example attached? This doesnt work ok for me, the shape should be 10x10 px and is not, also x and y pos are dont match with window size. Translating to 400, 300 should place the rect in top right corner but I get that with only 320, 190, so the units are not mapped to pixels
but maybe i am missing something from what you describe?
In opengl to achieve this 2D like-pixels to units effect i would set the perspective to be orthographical with glOrtho command, is something like this possible in Gem?
thanks!!
enrike
cyrille henry(e)k dio:
hello,
i tried with : dimen 400 300 view 0 0 1000 // 1000 is in order to put the camera far from the view point, to reduce space distortion perspec 0 400 0 300 999 1001 // 999 and 1001 limit the render to primitive position is between -1 and 1 (because camera is at 1000)
and everything is working as expected. i just have 1 strange thing : i need to set the [dimen<, [create< , then [reset< and last [view< and [perspec< if i did not do a reset, a square is not rendered as a square but a rectangle.
anyway, it's working.
cyrille
altern a écrit :
i tried to pass different view values to gemwin. I can see that in order to be able to specify location or with with pixels i should set view to view 0 0 2 but as soon as i set that the shape is not there any more. This is an example i am using to test. If i ser view to view 0 0 2.01 it is almost there but if i set it to 0 0 2 it is not there any more. I guess it might be because it is either beyond the back limit y or behind the camera?
thanks
enrike
altern(e)k dio:
hi
I am trying to map GEM units to pixels so that i can position some videos in the GEM window using pixels values. For this I understand that i must match the projection values with the window size. So i am doing
dimen 400 300 perspect 0 400 0 300 1 20
and i render all objects at z position 1
translateXYZ 100 100 1
However I am getting a weird result, the units are far smaller that pixels, so to move a video 100px in the x i need to change it x position by 300 units or something like this. So I am not sure about what i am doing wrong, I am familiar with OpenGL but i never played too much with GEM before so I am still getting into it.
Another small issue is that I would also like to reverse the Y so that upper left is 0,0 and bottom left would be 0,200 for example, not sure about how to change this. I guess it is to do with the gemwin settings but i dont get it right.
thanks
enrike
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