Re: [JAVA3D] fit ModelClip

[Renoir Sewjee]

A plane can be defined by a normal to the plane and a point on the plane.  The x, y, z values of the normal are the a, b, c values of the plane equation with the d value equal to -dot(normal, pointOnPlane). This can be accomplished with the following code: // You supply these two. Vector3f normal; Point3f  pointOnPlane; // The eqn of the plane. Vector3d eqn = new Vector3d(); eqn.x = normal.x; eqn.y = normal.y; eqn.z = normal.z; eqn.w = -normal.dot(new Vector3f(pointOnPlane)); Say you want to clip your model by z value (ie. you have zmin and zmax). normal = (0, 0, 1) point on zmax plane = (0, 0, zmax) point on zmin plane  = (0, 0, zmin) plane equation = (0, 0, 1, zmin + sliderValue*(zmax - zmin)) Hope this helps, Renoir -- Renoir Sewjee Software Engineer ISS International (Welkom) Tel: +27 (0)57 912 2702 Fax: +27 (0)57 912 2652 --   =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".