Why my ConvexHull doesn't work correctly??

How to solve it?
Thanks

if i use TreeCollision,the model is ok,but i can't set force to it.

I can see your Stunt Playground 2.0,it is fine.
How to do it?
Thanks

Well... TreeCollision is only for static objects... You can use ConvexHull for body of your car, then it will be moving. If you want better convex look at the RigidBodyDesigner that Walaber made --> http://walaber.com/misc/RigidBodyDesigner.rar

i'm havin a hard time tryin to see ur picture.. it's nt showing right up ??????

I change my picture,you can see the blue Rect is not correct area

yeah.. i can see your problem.. you are not going anywhere by using the convex hull. That's the way it's suppose to work create convexes out of the vertex data.

I've not used the walaber rigid body designer.. just heard of it NOW

I'll have to take a look and see what that really is.

as to the solution to your problem - break down your slope into smaller pieces and then try creating convex hulls for them. It's not a nice solution but one that might just work.. have like 8-10 smaller meshes that make up the complete slope.

But Walaber's Stunt Playground 2.0 DEMO is fine.
and Must I use Phys eidt ??

(..)
and Must I use Phys eidt ??
...eee what do you mean by that...???

I've not used the walaber rigid body designer.. just heard of it NOW

I think that Waleber made this tool for "Stunt Playground " to make cars easily.

that's right.

also, Stunt Playground takes some meshes (like the quarter-pipe), and makes them TREE COLLISIONS because their shape is complicated. those objects cannot be stacked on top of other objects because of this limitation.

Thanks,I may use physics edit....