I would like to draw a pyramid (representing the boundries of the camera). The input parameters are:
- Camera position Pc
- Camera direction Vc
- Camera up direction Vupc
- Camera horizontal viewing angle Alpha
- Either aspect ratio of the view of camera (horizontal and vertical sides) or vertical viewing angle
- Side length of the pyramid: A (if we have the 4 edge vectors of the pyramid, we can determine the 4 points which are in the directions of the vectors from Pc in the distance of A)
Thank you for your help!