There is something wrong in your program. I am able to use "this" without any problems. You should check the following:
1) are you using "this" keyword from a static context ? (a static method) 2) are you sure that the object referred by "this" is really an instance of Canvas3D ? (you might be inside an inner class) Cheers, Florin -----Ursprüngliche Nachricht----- Von: Philip J Colbert [mailto:[EMAIL PROTECTED]] Gesendet: Mittwoch, 12. Februar 2003 14:20 An: [EMAIL PROTECTED] Betreff: Re: [JAVA3D] Question on views & viewingPlatforms Small problem with that line: I am using in my app an class called LHS_Canvas_Test that extends Canvas3D. In my constructor I use the "this" key word to refer to the canvas i.e. simpleUniverse = new SimpleUniverse(this); instead of simpleUniverse = new SimpleUniverse(canvas); when I put your suggestion into play like this: TransformGroup viewTG = this.getView().getViewPlatform().getViewPlatformTransform(); the compiler complains! that it does not reckonise the "this" any suggestions? C YA Phil :) >===== Original Message From Discussion list for Java 3D API <[EMAIL PROTECTED]> ===== >Phil, > >Its probably easier if you don't construct your own view nodes. > >Best to just use: > >TransformGroup viewGroup = >canvas.getView().getViewingPlatform().getViewPlatformTransform(); > >Then just use setTransform() and getTransform() on the "viewGroup". This >should update your view happily without all the extra work. > >Kev > >PS. Please excuse me if the method names arn't exactly right, i can't get >hold of the documentation right now. > >------------------------------------------------------------------------ >Jose UML - http://www.newdawnsoftware.com/jose >Pondering RPG - http://pondering.newdawnsoftware.com >------------------------------------------------------------------------ > >> Hi all >> >> I have got an appliation that I import VRML shapes and add them to the >> scene at run time. One of the issues I have is that when the user moves >> the starting shape it is tricky for them just to manipluate the shape >> back to the starting position. What I want to do is place a button on >> the swing panel that resets the scene back to it's starting posistion >> and rotation etc. >> >> The problem I have is that I don't seam to be able to change the view of >> my scene I have lood at the Selman book and tried to include some parts >> of the code but it all has no effect I am proberly constructing it wrong >> so if someone could point out what I have done wrong I would "luv it" >> >> canvas = new >> Canvas3D(SimpleUniverse.getPreferredConfiguration()); simpleUniverse >> = new SimpleUniverse(canvas); >> ViewPlatform vp = new ViewPlatform(); >> TransformGroup viewTG = new TransformGroup(); >> Transform3D viewT3d = new Transform3D(); >> Transform3D eyeT3d = new Transform3D(); >> View view = new View(); >> PhysicalBody pb = new PhysicalBody(); >> PhysicalEnvironment pe = new PhysicalEnvironment(); >> view.setPhysicalBody(pb); >> view.setPhysicalEnvironment(pe); >> //setting up TransformGroup for view >> viewT3d.setTranslation(new Vector3d(0.0,0.0,10.0)); >> //set up a default viewing platform >> view.attachViewPlatform(vp); >> view.setBackClipDistance( 300 ); >> view.setFrontClipDistance( 0.3 ); >> // Background color >> worldBounds = new BoundingSphere(new Point3d(),100.0); >> addLighting(worldBounds); >> back.setApplicationBounds( worldBounds ); >> back.setCapability(Background.ALLOW_COLOR_WRITE); >> back.setColor( new Color3f(0.7f, 0.7f, 0.95f )); >> /* >> Point3d centre = new Point3d(); >> worldBounds.getCenter(centre); >> double radius = worldBounds.getRadius(); >> Vector3d temp = new Vector3d(centre); >> viewT3d.set(temp); >> System.out.println("temp = "+temp); >> double eyeDist = 1.4*radius/ Math.tan(Math.toRadians(40)/2.0); >> temp.x = 0.0; >> temp.y = 0.0; >> temp.z = eyeDist; >> eyeT3d.set(temp); >> viewT3d.mul(eyeT3d); >> */ >> //create scene >> canvas.setCursor(new Cursor(Cursor.HAND_CURSOR)); >> BranchGroup root = new BranchGroup(); >> BranchGroup shape = new BranchGroup(); >> shape = (BranchGroup)getScene(); >> //add all groups to root node >> viewTG.addChild(vp); >> viewTG.setTransform(viewT3d); >> root.addChild(viewTG); >> root.addChild(shape); >> root.compile(); >> SimpleUniverse.addBranchGraph(root); >> >> C YA Phil Colbert :) >> >> Philip J Colbert >> Software Engineer >> RCID, Bruce Building >> University of Newcastle Upon Tyne >> NE1 7RU >> Phone 0191-2225306 >> Fax 0191-2225833 >> This e-mail, including any attached files, may contain confidential and >> privileged information for the sole use of the intended recipient(s). If >> you are not the intended recipient, please note that any circulation or >> copying of this e-mail is strictly prohibited. If you have received this >> e-mail in error please contact the sender by reply e-mail and delete all >> copies of this message. >> >> The RCID makes every effort to ensure that this e-mail and any >> attachments are sent virus free. However it is the responsibility of the >> recipient to perform any checks they deem necessary. >> >> =========================================================================== >> 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". > >=========================================================================== >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". Philip J Colbert Software Engineer RCID, Bruce Building University of Newcastle Upon Tyne NE1 7RU Phone 0191-2225306 Fax 0191-2225833 This e-mail, including any attached files, may contain confidential and privileged information for the sole use of the intended recipient(s). If you are not the intended recipient, please note that any circulation or copying of this e-mail is strictly prohibited. If you have received this e-mail in error please contact the sender by reply e-mail and delete all copies of this message. The RCID makes every effort to ensure that this e-mail and any attachments are sent virus free. However it is the responsibility of the recipient to perform any checks they deem necessary. =========================================================================== 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". ==========================================================================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".
