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ahuarte
02-10-2002, 10:27 PM
Hi,

I have calculate the six bound planes of the current frustm, but I want to get the 8 vertices that define the bounding box around it ?

How I can calculate?
thanks in avance!

julius
02-11-2002, 02:56 AM
Cant you iterate the planes and find intersections between three of the planes?

I.e solve the eqn system:

A1*x + B1*y + C1*z + D1 = 0
A2*x + B2*y + C2*z + D2 = 0
A3*x + B3*y + C3*z + D3 = 0

for x,y,z.
where An, Bn, Cn, Dn is the equation constants for plane n.

ahuarte
02-11-2002, 10:12 PM
thank you very much

I try use the Gauss's method in order to solve it.


Originally posted by julius:
Cant you iterate the planes and find intersections between three of the planes?

I.e solve the eqn system:

A1*x + B1*y + C1*z + D1 = 0
A2*x + B2*y + C2*z + D2 = 0
A3*x + B3*y + C3*z + D3 = 0

for x,y,z.
where An, Bn, Cn, Dn is the equation constants for plane n.