Plane equation with 3 points

Graphics and GPU Programming Programming

Started by HiddenInBSP June 06, 2001 11:10 AM

2 comments, last by HiddenInBSP 22 years, 10 months ago

HiddenInBSP

122

Author

June 06, 2001 11:10 AM

Can anybody tell me how calculate a plane equation with 3 points of this plane? Thanks, HIBSP.

acraig

471

June 06, 2001 08:29 PM

Check out this Link , it should explain it.

-------
Andrew

bishop_pass

112

June 06, 2001 10:30 PM

Three points define a plane. A normal vector can be derived from these three points by computing two vectors from these three points and getting the cross product of these two vectors. The derived normal is = {A,B,C}. Now, take any one of your three points, and create the value d = Ax + By + Cy where {x,y,z} is any one of your three points. Now, create the value D = -d. We now have our plane equation Ax + Bx + Cx + D = 0.

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HiddenInBSP

122

Author

June 07, 2001 10:50 AM

Thanks!!!!!!