OpenGLposition of point [0,0,0]

Question

Is in opengl any function able tell me position of point[0,0,0] after using this code:

glPushMatrix();
glRotatef(1, 0, 1, 0);

compare to point[0,0,0] before transformation or do I just have to calculate it?

for example if I got transformation

glTranslatef(1, 0, 0);

I want to get[1,0,0]

You may want to consider using modern OpenGL and using an external matrix library. Here is a starting point: http://www.arcsynthesis.org/gltut/ — Jacob Parker, Apr 11 '13 at 14:44

score 0 · Accepted Answer · edited May 23 '17 at 12:18

0

Yes , You can get the coordinates for a specific vertex point after a transformation

For Example:

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(100.0, 50.0, 0.0);
glRotatef(-25.0, 0.0, 1.0, 0.0);  

glGetFloatv(GL_MODELVIEW_MATRIX , *your_matrix*);
//print your matrix to check if that is the desired transformation coordinates

edited May 23 '17 at 12:18

Community

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answered Apr 11 '13 at 14:34

Alya'a Gamal

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OpenGLposition of point [0,0,0]

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