Re: [JAVA3D] Fit image in frame

[Dirk L. van Krimpen]

Jasmine,   Honestly speaking, I never used parallel projection. So, I tried it out, changed the ProjectionPolicy and it worked as well with parallel projections.   Regards, Dirk ----- Original Message ----- From: Jasmine Kwok To: [EMAIL PROTECTED] Sent: Thursday, March 20, 2003 6:58 AM Subject: Re: [JAVA3D] Fit image in frame Hi Dirk,   I have tried the codes, and it works well for perspective projection. Is there any chance that this method works for parallel projection as well?     Regards, Jasmine   ----- Original Message ----- From: Dirk L. van Krimpen To: [EMAIL PROTECTED] Sent: Wednesday, March 19, 2003 6:39 PM Subject: Re: [JAVA3D] Fit image in frame   Hi Jasmine,   I got good results with:   BoundingSphere fit=(BoundingSphere)objRoot.getBounds(); double rad=fit.getRadius(); Point3d ctr=new Point3d(); fit.getCenter(ctr); View view=universe.getViewer().getView(); Vector3d viewvector=new Vector3d(ctr); double viewDistance=2.0*rad/Math.tan(View.getFieldofView()/2.0); viewVector.z=viewDistance; Transform3D viewTrf=new Transform3D(); viewTrf.set(viewVector); TransformGroup vpTrans=universe.getViewingPlatform().getViewPlatformTransform(); vpTrans.setTransform(viewTrf);   This will shift your geometry to the center of your canvas. After this you may set the radius of "fit" to your liking (usually people like to have at least some space between the frame borders and the geometry).   Please, give it a try. I am interested to know if it worked for you as well.   Thanks, Dirk ----- Original Message ----- From: Jasmine Kwok To: [EMAIL PROTECTED] Sent: Wednesday, March 19, 2003 5:47 AM Subject: [JAVA3D] Fit image in frame Hi all, i am doing a program in which there is a command. When selected, the displayed image has to be scaled to fit it nicely into the frame. My question is that how do I knowhow big/small I have to scale the image in order for it to fit in the frame?   == Jasmine Kwok