How to Create a "BoxShape" in jBullet?

Question

I want to create a BoxShape in jBullet. The constructor asks for a Vector3f object as parameter which asks for three float parameters.

BoxShape(Vector3f boxHalfExtends) //The constructor for the "BoxShape" class.

I have looked at the jBullet page and couldn't find what boxHalfExtends is.

What am I supposed to enter to the constructor parameter for the BoxShape?

Answer 1

"To create a box you have to pass a vector with the half-extents."

Source: http://www.panda3d.org/manual/index.php/Bullet_Collision_Shapes

What that means is, you need to pass in half of the width and height for the box on the x,y,z axises.

float dx = 0.5f; //X Width = 0.5 * 2 = dx - (-dx) = 1
float dy = 0.5f; //Y Width = 0.5 * 2 = dy - (-dy) = 1
float dz = 1.0f; //Z Width = 1.0 * 2 = dz - (-dz) = 2

CollisionObject boxShape = BoxShape(Vector3f(dx, dy, dz));

The dx,dy,dz values aren't about where on the world the box is placed but how big it is.