Hi,
I have exported simple figure in .3ds format (one body part per file) and then loaded them into Java3D. No problem with that - problem starts when I am trying to apply animation on individual parts. There has to be something I am not getting right - since I am not getting motion as I would expected.
First I have created test app and instead of using Poser body parts I have created parts mostly using geometry primitives like cylinders and spheres - then assembled them into “human” looking shape and then started putting animations into it and everything works fine. So I decided to use more realistically looking parts from Poser (.3ds) and that is where the problems started.
When I attach say right shoulder transform group into chest transform group and would like to apply rotation to shoulder - final rotation is not done with respect to chest TG but it looks like shoulder is not aware of the fact being attached to chest TG as its children - the result is obviously not what I have in mind.
I am going to put some source code here to illustrate this.
I load files : private TransformGroup loadBodyPart(String name) {
if (! (name == null)) {
Inspector3DS loader = new Inspector3DS(“models/” + name + “.3DS”);
loader.setLogging(true);
loader.setTextureLightingOn();
loader.parseIt();
TransformGroup theModel = loader.getModel();
Transform3D transformRotate = new Transform3D();
transformRotate .rotX(Math.PI / 3);
theModel.setTransform(transformRotate );
return theModel;
}
else {
Debug.print(" Loading [ " + name + " ] has failed ");
return null;
}
}
then I build model:
public void loadAvatar(Group rootBG) {
avatarTG = new TransformGroup();
avatarTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
avatarTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
headTG = loadBodyPart(“head”);
headTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
headTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
avatarTG.addChild(headTG);
neckTG = loadBodyPart(“neck”);
Transform3D neckT3D = new Transform3D();
neckTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
neckTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
headTG.addChild(neckTG);
chestTG = loadBodyPart(“chest”);
chestTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
chestTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
neckTG.addChild(chestTG);
rightshoulderTG = loadBodyPart(“rightshoulder”);
rightshoulderTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
rightshoulderTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
chestTG.addChild(rightshoulderTG);
rightforearmTG = loadBodyPart(“rightforearm”);
rightforearmTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
rightforearmTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
rightshoulderTG.addChild(rightforearmTG);
righthandTG = loadBodyPart(“righthand”);
righthandTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
righthandTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
rightforearmTG.addChild(righthandTG);
leftshoulderTG = loadBodyPart(“leftshoulder”);
leftshoulderTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
leftshoulderTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
chestTG.addChild(leftshoulderTG);
leftforearmTG = loadBodyPart(“leftforearm”);
leftforearmTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
leftforearmTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
leftshoulderTG.addChild(leftforearmTG);
lefthandTG = loadBodyPart(“lefthand”);
lefthandTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
lefthandTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
leftforearmTG.addChild(lefthandTG);
abdomenTG = loadBodyPart(“abdomen”);
abdomenTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
abdomenTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
chestTG.addChild(abdomenTG);
hipTG = loadBodyPart(“hip”);
hipTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
hipTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
abdomenTG.addChild(hipTG);
leftthighTG = loadBodyPart(“leftthigh”);
leftthighTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
leftthighTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
hipTG.addChild(leftthighTG);
leftshinTG = loadBodyPart(“leftshin”);
leftshinTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
leftshinTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
leftthighTG.addChild(leftshinTG);
leftfootTG = loadBodyPart(“leftfoot”);
leftfootTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
leftfootTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
leftshinTG.addChild(leftfootTG);
rightthighTG = loadBodyPart(“rightthigh”);
rightthighTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
rightthighTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
hipTG.addChild(rightthighTG);
rightshinTG = loadBodyPart(“rightshin”);
rightshinTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
rightshinTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
rightthighTG.addChild(rightshinTG);
rightfootTG = loadBodyPart(“rightfoot”);
rightfootTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
rightfootTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
rightshinTG.addChild(rightfootTG);
// just for testing
MouseRotate r = new MouseRotate(avatarTG);
r.setSchedulingBounds(new BoundingSphere(new Point3d(), 1000.0));
rootBG.addChild®;
MouseTranslate d = new MouseTranslate(rightshoulderTG);
d.setSchedulingBounds(new BoundingSphere(new Point3d(), 1000.0));
rootBG.addChild(d);
MouseZoom z = new MouseZoom(avatarTG);
z.setSchedulingBounds(new BoundingSphere(new Point3d(), 1000.0));
rootBG.addChild(z);
Transform3D transformUP = new Transform3D();
transformUP.rotX(Math.PI / 2);
rootBG.addChild(avatarTG);
}
and then I apply rotation to right shoulder:
AxisAngle4f rightShoulderAxisAngle = new AxisAngle4f(-1.0f,0.0f, 0.0f, 1.0f);
public void setRightShoulderRot(int rotation) {
Transform3D tmpTrans = new Transform3D();
rShoulderRot = rotation;
rightShoulderAxisAngle.angle = (float) Math.toRadians(rShoulderRot);
avatar.rightshoulderTG.getTransform(tmpTrans);
tmpTrans.setRotation(rShoulderAA);
avatar.rightshoulderTG.setTransform(tmpTrans);
}
but as I have already said the resulting rotation is along the x-axis (as is in this case stated in AxisAngle4f) but I would expect to right shoulder to rotate with respect to chest transform group - but that is not what is happening …
Am I missing something basic.
Any insight into this would be greatly appreciated
