Thanks for the input, unfortunately that is not the problem. Ive just realised that on the second pick it doesn't matter where the pointer is when you press the button, it still resets the shape (i.e. picks it no matter where you click). Does anyone have any ideas, I'm really stuck on this one :(
thanks >-----Original Message----- >From: Robert Gomez-Reino Garrido [mailto:[EMAIL PROTECTED] >Sent: 11 December 2003 13:59 >To: [EMAIL PROTECTED] >Subject: Re: [JAVA3D] real problems with a translate behavior > >I haven't read the code bellow, but from what I understand >you are moving the shape creating a new transform3D each time >you want to move it, instead of multipliying it with the new >transformation. >Something like this. > > >Shape3D miShape = new Shape3D; >//I am going to move it for first time >Transform3D firstTransform3D = new Transform3D(); >firstTransform3D.set(whatever); TransformGroup miGroup = new >TransformGroup(firstTransform3D); miGroup.addChild(miShape); >//now if I want to move it again, I have to get the transform >already done > >Transform3D oldTransform = new Transform3D(); Transform3D >newTransform = new Transform3D(); newTransform.set(whatever); >miGroup.getTransform(oldTransform ); >oldTransform.mul(newTransform); //or the other way, never >guess ;-), check the matrix multiplication order >miGroup.setTransform(oldTransform);//that is the old >multiplied by the new one > >Should work, sorry for the pseudocode, my machine is not >working propely, I can even hardly open the mail!! > >Boby > > > >-----Original Message----- >From: Ben Logan [mailto:[EMAIL PROTECTED] >Sent: Thursday, December 11, 2003 1:22 PM >To: [EMAIL PROTECTED] >Subject: [JAVA3D] real problems with a translate behavior > > >import java.util.*; >import javax.media.j3d.*; >import javax.vecmath.*; > >import java.awt.*; >import java.awt.event.*; > >import com.sun.j3d.utils.geometry.*; > >import com.sun.j3d.utils.picking.*; >import com.sun.j3d.utils.picking.behaviors.*; > >Can someone please help with this? I have a translate behavior that >successfully moves a shape through a scene while the user drags the >mouse with the right mouse button, it works fine until you try >and do it >a second time, at which point the shape returns to its >original position >and translates from there. I am calling setTransform where I think I >should be, I'm totally stuck, would really appreciate any help. > >Here is some sample output from the program: > >mouse pressed : MODEL TRANS: 1.0, 0.0, 0.0, 2.5 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >mouse dragged : MODEL TRANS: 1.0, 0.0, 0.0, 2.5 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CALLING UPDATE SCENE >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.5 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.508 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.516 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.524 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >mouse dragged : MODEL TRANS: 1.0, 0.0, 0.0, 2.532 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CALLING UPDATE SCENE >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.532 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 > >Etc etc etc :) > >Then, the second time you try and do it: > >mouse pressed : MODEL TRANS: 1.0, 0.0, 0.0, 2.5 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >mouse dragged : MODEL TRANS: 1.0, 0.0, 0.0, 2.5 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CALLING UPDATE SCENE >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.5 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 >CURRENT SHAPE TRANSFORM: 1.0, 0.0, 0.0, 2.508 >0.0, 1.0, 0.0, 0.0 >0.0, 0.0, 1.0, 2.5 >0.0, 0.0, 0.0, 1.0 > >It starts again from the shapes original starting position. > >I would really appreciate some help, thanks in advance, Ben > > > >public class MyPickTranslateBehavior > extends PickTranslateBehavior > implements Constants { > protected WakeupCondition m_WakeupCondition = null; > > private int x = 0; > private int y = 0; > private int x_last = 0; > private int y_last = 0; > > private double y_angle = 0.0; > private double x_factor = 0.02; > > int changeX; > int changeY; > > Appearance appear; > ColoringAttributes ca; > > private Transform3D modelTrans = null; > private Transform3D transformY = null; > private PickResult pickResult = null; > private Node pickNode = null; > private TransformGroup transformGroup = null; > > Canvas3D canvas; > BranchGroup objRoot; > Java3DFrame frame; > > BranchGroup guideShape; > > double step = 0.008; > > public MyPickTranslateBehavior(Java3DFrame f, BranchGroup objRoot, > Canvas3D canvas, > BoundingSphere bounds) { > > super(objRoot, canvas, bounds); > this.frame = f; > this.setBounds(bounds); > this.canvas = canvas; > this.objRoot = objRoot; > > modelTrans = new Transform3D(); > transformY = new Transform3D(); > > transformGroup = new TransformGroup(); > transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); > transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); > > transformGroup.setCapability(TransformGroup.ALLOW_CHILDREN_WRITE); > > //create the wakeupCriterion for the behavior > WakeupCriterion criterionArray[] = new WakeupCriterion[2]; > criterionArray[0] = new WakeupOnAWTEvent(MouseEvent.MOUSE_PRESSED); > criterionArray[1] = new WakeupOnAWTEvent(MouseEvent.MOUSE_DRAGGED); > > //save the WakeupCriterion for the behavior > m_WakeupCondition = new WakeupOr(criterionArray); > } > > public void initialize() { // initialize > wakeupOn(m_WakeupCondition); //Apply the initial WakeupCriterion > } > > public void processStimulus(Enumeration criteria) { // >processStimulus > > while (criteria.hasMoreElements()) { > WakeupCriterion wakeUp = (WakeupCriterion) >criteria.nextElement(); > > if (wakeUp instanceof WakeupOnAWTEvent) { > AWTEvent[] evt = ( (WakeupOnAWTEvent) wakeUp).getAWTEvent(); > try { > processAWTEvent(evt); > } > catch (Exception e) { > > } > } > } > //Assign the next WakeupCondition, so we are notified again > wakeupOn(m_WakeupCondition); > } > > private void processAWTEvent(AWTEvent[] events) { > > for (int n = 0; n < events.length; n++) { > > if (events[n] instanceof MouseEvent) { > > MouseEvent eventPress = (MouseEvent) events[n]; > > if (eventPress.getModifiers() == MouseEvent.BUTTON3_MASK) { > //System.out.println("RIGHT MOUSE PRESSED _ DOING >TRANSLATION"); > > if (eventPress.getID() == MouseEvent.MOUSE_PRESSED) { > pickCanvas.setShapeLocation(eventPress); > pickResult = pickCanvas.pickClosest(); > > if (pickResult != null) { > pickNode = pickResult.getObject(); > transformGroup = (TransformGroup) pickResult.getNode( > PickResult. > TRANSFORM_GROUP); > > transformGroup.getTransform(modelTrans); > > System.out.println("mouse pressed : MODEL TRANS: " + > modelTrans.toString()); > > > x = x_last = eventPress.getX(); > y = y_last = eventPress.getY(); > > > } > } > > if ( (eventPress.getID() == MouseEvent.MOUSE_DRAGGED)) { > > System.out.println("mouse dragged : MODEL TRANS: " + > modelTrans.toString()); > > transformGroup.setTransform(modelTrans); > > //transformGroup.getTransform(modelTrans); > > //System.out.println("mouse dragged 2 : MODEL TRANS: " + >modelTrans.toString()); > > // Translating the object on both the X and Y axis > x = eventPress.getX(); > y = eventPress.getY(); > > changeX = x - x_last; > changeY = y - y_last; > > updateScene(); > > x_last = x; > y_last = y; > > > } > > } > } > } > } > > public void updateScene() { > > System.out.println("CALLING UPDATE SCENE"); > > int loopCount = changeX; > > if (changeX < 0) { > loopCount = changeX * -1; //make pos > } > > loopCount = loopCount * 4; > > boolean rightCollision = false; > boolean leftCollision = false; > > int stepCountRight = 0; > int stepCountLeft = 0; > > for (int i = 0; i < loopCount; i++) { > > //transformGroup.getTransform(modelTrans); > > System.out.println("CURRENT SHAPE TRANSFORM: " + >modelTrans.toString()); > > Vector3d temp = new Vector3d(); > modelTrans.get(temp); > > Vector3d temp2 = new Vector3d(); > > if (frame.inCollision() && (leftCollision == false) && >(rightCollision == false)) { > if (changeX < 0) { > > temp2 = new Vector3d(step, 0.0, 0.0); > > > leftCollision = true; > } > else { > > temp2 = new Vector3d( -step, 0.0, 0.0); > > rightCollision = true; > } > } > > else { > > if (changeX > 0) { > if ( (rightCollision == true) && (stepCountRight == 0)) { > > temp2 = new Vector3d( -step, 0.0, 0.0); > > stepCountRight--; > } > > else { > > > temp2 = new Vector3d(step, 0.0, 0.0); > > > } > if (rightCollision && (stepCountRight != 0)) { > stepCountRight++; > } > } > > else { > if ( (leftCollision == true) && (stepCountLeft == 0)) { > > > temp2 = new Vector3d(step, 0.0, 0.0); > > stepCountLeft--; > } > else { > > temp2 = new Vector3d( -step, 0.0, 0.0); > > } > if (leftCollision && (stepCountLeft != 0)) { > stepCountLeft++; > } > } > > } > > > Transform3D t2 = new Transform3D(); > t2.setTranslation(temp2); > > modelTrans.mul(modelTrans, t2); > > transformGroup.setTransform(modelTrans); > } > > } >} > > > > > > > > > > >******************************************** >Ben Logan - Graduate Software Engineer >RCID >Stephenson Building >Newcastle Upon Tyne >NE1 7RU >www.rcid.ncl.ac.uk >******************************************** > >=============================================================== >========= >=== >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". > > =========================================================================== 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".
