Is Your Point Inside a Non-Regular Tetrahedron?

[soikez]

Hello ,
does anybody knows how can I check if a point is inside a tetrahedral. The tetrahedral isn't regular.

Thanks!

 

[Asuralm]

I don't know if this is a good way to solve it. But if in a triangle, the easiest way to check if a point is inside is to check the sum of the area. i.e. for ABC, there is a point P, if P is inside ABC, then, area(ABP)+area(ACP)+area(BCP) = area(ABC).

You can check the volume in the tetrahedral case.

 

[robphy]

http://www.google.com/search?q=point+inside+tetrahedron
...essentially Asuralm's suggestion