Similar to Angular Joints the way in which it is created, the only difference between them is that in Linear Joint the rest length is not restricted in movement but the angular rotation of the rigid body is.

The above diagram shows that the restlength is not restricted and the angle/orientation of the rigidbody is restricted [...]

What is an Angular Joint?
Angular Joint when created between 2 rigid bodies restricts the length/distance (provided by the user) that is maintained between them. The Rigid bodies are free to rotate in angular direction around the rigid bodies own axis.

Example to create Angular joint:
–Create Angular Joint
POCA2 = vector(0,0,0)
POCB2 = vector(-60,60,0)
desc2 = ConstraintDesc(”angular_constraint”,rb_box2,rb_plane,POCA2,POCB2,500,30)
angularjoint = pDirPhyz.createAngularJoint(desc2,20)
put [...]