View Full Version : gluUnProject

07-29-2002, 05:40 AM
hi, something wrong appends when i get the z value from a hit selection because the value is up than 1.0 and when i pass this value to the gluUnproject() method, of course the x, y, z coodinates of the scene are wrong??

Is this pb coming from the z value returned?

07-31-2002, 09:40 PM
Actually i still testing on this method..
so.. i'm not sure my way is correct or not!!!
but i can share it with u ...

Try to set the far clipping plane to large value... and u will get a big volume on your projection....

Try to put all the objects within the far and near clipping plane...and draw a line from near clipping plane to far clipping plane...

Try to make an intersection within a line and the objects which are collide... then u will get the exact x, y ,z...

[This message has been edited by cwc36 (edited 08-06-2002).]