Point inside mesh?

[mikeman42]

Quick question...is there any way to find out if a specified 3D point is 'inside' or 'outside' a collision mesh?

Only way I have figured out until now is cast a large ray from that point to a direction, determine the first hit, and then cast a ray from the first hit to that point again. I figure it it's inside a mesh then it will register a hit, otherwise not. But I'm not very happy with this solution, is there any more straightforward way to do this? Thank you.

[Julio Jerez]

if you are refering to a collision shape in newton, you can call funtion NewtonClosesttPoint
It will returns teh closest distance form teh point to the shape. if the point is inside or in the surface of the shape the distance is zero.

It only works on convex and compound shapes.

[mikeman42]

Hm...in my case I want to test the world geometry, which will probably be not convex....so there is no other solution?

[JernejL]

if it's a concave compound made of convex parts then it's ok, if it's a trimesh you'll need to use something else to perform the testing, doing this on trimesh is no easy task.

[Julio Jerez]

so far I know a level mesh is an open surface, tha mean the is no comcept of in ot out.
The only way I can thonk of is bu using ray cast.
what is this for? Maybe there are diffrent ways to do what you want