Transformations in OpenGL

A transformation is considered part of OpenGL's state.



Transformations are defined before the geometry that they should affect.



When drawing, vertex data is transformed by the currently active transformation. 








glBegin(GL_TRIANGLES)
glVertex2f(0.0, 0.0)
glVertex2f(0.5, 0.0)
glVertex2f(0.25, 0.5)
glEnd()

glTranslatef(0.5, -0.2, 0.0)
glBegin(GL_TRIANGLES)
glVertex2f(0.0, 0.0)
glVertex2f(0.5, 0.0)
glVertex2f(0.25, 0.5)
glEnd()

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