Intersection with cutting plane

OpenGL OpenGL: Basic Coding
1

Hello guys, I’m here again ,

I want to know if someone know how can I use the intersection of a surface / mesh with a cutting plane, the goal of what I want to do is, to have the curve were the cutting plane intersect the surface, I can send some picture if someone want…

Tnk you for the moment
Best regards
Kurt

2

If you have your surface broken up into triangles, the problem is just a triangle-plane intersection. Try Graphics Gems 3 p.233 by Georgiades, “plane to plane intersection”.

Chris

3

Is there some online (internet) stuff ??

4

http://www.acm.org/tog/GraphicsGems/gemsiii/pl2plane.c

5

Chris do you want some picture, just to you check, if it is the most eficient/easy way to use ?

Tnks
RGDS
Kurt

6

Feel free to e-mail me a picture - there should be a link to my address above.

Chris

7

Here’s how I’d do this:

  1. Break the mesh into triangles.
  2. For each triangle, find the points at which its rays intersect your plane (very easy if your plane is normal to one of the axes).
  3. Connect the dots.
8

Sorry Chris,

I´m new to OpenGL, and I really have to do this, if you could send me some code, it will be really apreciated.

Tnks
Best regards
Kurt

9

Sorry - a NDI prevents me from actually sending any code…

What part are you not sure about?

Chris