[PD] GEM mapping units to pixels
cgclepper at gmail.com
Sun May 13 21:38:21 CEST 2007
Setting a 1:1 perspective tells GL to make x=y in units even though the
ratio is 1.33:1 in the display. By not doing this rectangle 1 1 would be
drawn to match the 4:3 ratio of the window (although the default in GEM is
x=y so you have to change it to something other than 1:1 to have this
The test2 patch resets some of the ratios to 1:1 so the perspective corrects
that back to fit the window, otherwise the square is taller than it is wide.
Hopefully I didn't make this more confusing.
On 5/13/07, cyrille henry <cyrille.henry at la-kitchen.fr> wrote:
> chris clepper a écrit :
> > You are wondering why a 1:1 perspective works for a 4:3 window?
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