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Index › Programming Questions & Help › Syntax Questions › GL Coordinate System..
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GL Coordinate System.. (Read 472 times)
chrism1th
GL Coordinate System..
Mar 30th, 2009, 8:31pm  
Hey,

So I'm working on a project that is using the Cartesian coordinate system ( I think that is what it is called ).

glTransformf(1.0f, 1.0f, 1.0f);
glVertex2df( 1.0f, 1.0f );

I'm not used to this at all, I'm used to the more familiar pixel based positioning of Actionscript and Processing..

glTransformf( 255.0f, 787.0f, 0.0f);
glVertex2df( 500.0f, 432.0f);

The problem is that the project needs to be in this mode and it's written in c. I'm doing rapid prototyping in processing for visual effects. Is there a way to change the Coordinate System so that I can code in this way rather than in pixels? Or even better.. is it possible to change the coord system on the fly at the point of where I want it to draw? Then change it back afterwards?

Suggestions?
Grin
Chris
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Kaeltyk
Re: GL Coordinate System..
Reply #1 - Mar 31st, 2009, 12:44am  
I may be wrong but does'nt this sound just like a global scale ? adding something like scale(1.0f/(float)width, 1.0f/(float)height, 1.0f) ?
Sorry if I misunderstood the question.
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