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# Triangle problem

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2 replies to this topic

### #1Facehat  Members

Posted 24 August 1999 - 11:36 AM

Hi everyone,
This is probably a stupid question, but its been giving me quite a bit of trouble:

Say you have a triangle like this:

code:
     30     /\    /  \   /    \45 ------ 22

The numbers you see there are the heights of each of the vertices. Now if I wanted to find the height of any point inside of it that triangle (lets say <0.33, 0.50> in 2d texture coordinates), how would I do that?

If I didn't explain that very well please tell me. Any help would be appreciated!

--TheGoop

### #2Anonymous Poster_Anonymous Poster_*  Guests

Posted 23 August 1999 - 06:21 PM

Set up a system of three equations to define the plane that contains the triangle, get the equation of the plane (z=ax+by+c) then subsitute.

### #3Anonymous Poster_Anonymous Poster_*  Guests

Posted 24 August 1999 - 11:36 AM

Thanks for the response, but could you be more specific? I'm somewhat new to 3D Math so im not sure how I might go about doing what you described.

--TheGoop

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