maspack.render

Interface Dragger3dConstrainer

public interface Dragger3dConstrainer

Experimental object to allow dragger motions to be constrained in arbitrary ways as specified by the application.

Method Summary

Modifier and Type	Method and Description
boolean	updatePosition(Vector3d pnew, RigidTransform3d TDW) Takes a new value for the dragger translation and updates it to one that satifies any constraints.
boolean	updateRotation(RotationMatrix3d RDW, RigidTransform3d TDW) Takes a new value for the dragger rotation matrix and updates it to one that satifies any constraints.

Method Detail

updateRotation

boolean updateRotation(RotationMatrix3d RDW,
                       RigidTransform3d TDW)

Takes a new value for the dragger rotation matrix and updates it to one that satifies any constraints. The previous dragger transform is provided for reference. If the constraint is such that the rotation matrix is simply reset to its original value, the method should return false.

Parameters:

RDW - new value for the dragger rotation matrix, which should be modified if necessary

TDW - previous dragger-to-world transform.

Returns:

false if there is no motion and RDWnew is reset to its original value TDW.R.

updatePosition

boolean updatePosition(Vector3d pnew,
                       RigidTransform3d TDW)

Takes a new value for the dragger translation and updates it to one that satifies any constraints. The previous dragger transform is provided for reference. If the constraint is such that the translation is simply reset to its original value, the method should return false.

Parameters:

pnew - new value for the dragger translation, which should be modified if necessary

TDW - previous dragger-to-world transform.

Returns:

false if there is no motion and pnew is reset to its original value TDW.p.