What does the equations -(f+n)/(f-n) and -2fn/(f-n) compute?
cat
According to OpenGL Projection Matrix, left(l), right(r), top(t) and bottom(b) describe the size of the near plane.
katsusa
http://learnwebgl.brown37.net/08_projections/projections_perspective.html A good tutorial for perspective projections which has detailed maths explanation and good visualization.
What does the equations -(f+n)/(f-n) and -2fn/(f-n) compute?
According to OpenGL Projection Matrix, left(l), right(r), top(t) and bottom(b) describe the size of the near plane.
http://learnwebgl.brown37.net/08_projections/projections_perspective.html A good tutorial for perspective projections which has detailed maths explanation and good visualization.