Your problem is in the constructor of the sphere primitive. One of the
primflags is:
ENABLE_APPEARANCE_MODIFY
I think this sets the READ WRITE capability of the Appearance(s) for all
PARTS of the primitive.
You will also have to set the READ WRITE capability of both the Appearance's
Material property, and the Material's components.
The attached (crude) example demonstrates this by altering the material's
specular colour with every click of the button.
Regards,
Andy Phelps
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Ali Crossley
Sent: 11 June 1999 10:51
To: [EMAIL PROTECTED]
Subject: [java3d] Sphere Capabilities
Dear All,
I am still miffed at why I cannot modify the Appearance of the
utils.geometry Sphere class during execution. The CREATE SPHERES section
below shows my basic arrangement for creating a number of Spheres and
setting all capabilities to read and write. The MODIFY COLOUR section is the
method I use to modify the Appearance objects during execution. I keep
getting a
javax.media.j3d.CapabilityNotSetException: Shape3D: no capability to
set appearance
at javax.media.j3d.Shape3D.setAppearance(Compiled Code)
at com.sun.j3d.utils.geometry.Sphere.setAppearance(Compiled Code)
at appearance.ColourSchemeManager.process(Compiled Code)
at
appearance.AppearanceManager.setColourScheme(AppearanceManager.java:7
exception when calling the MODIFY COLOUR part of the code. Strangely enouogh
if I use the COLORCUBE subclass of SHAPE3D then it all works fine. Is this
somethng to do with Sphere's superclass being PRIMITIVE???
Any help REALLY appreciated.
Cheers,
Allistair Crossley
CREATE SPHERES CODE
----------------------------------------
{
Atom[] atoms = m.getAtoms();
boolean renderHeteroAtoms = dOptions.isHeteroAtomsOn();
TransformGroup aTG = new TransformGroup();
aTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
aTG.setCapability(Group.ALLOW_CHILDREN_READ);
for(int i = 0; i < atoms.length; i++)
{
if( (!renderHeteroAtoms) && (atoms[i].isHetatm()) )
continue;
Transform3D atomT3D = new Transform3D();
atomT3D.set(0.1, new Vector3d(atoms[i].getX(), atoms[i].getY(),
atoms[i].getZ()));
TransformGroup atomTG = new TransformGroup(atomT3D);
file://atomTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
atomTG.setCapability(Group.ALLOW_CHILDREN_READ);
atomTG.setCapability(Group.ALLOW_CHILDREN_WRITE);
Appearance app = new Appearance();
Sphere atom = new Sphere(5.0f, app);
file://Sphere s = new
ere(
(ElementsManager.getElement(atoms[i].getRefNo()).getVDWRadius()) / 20, 1,
app);
file://Shape3D atom = s.getShape();
atom.setCapability(Group.ALLOW_CHILDREN_READ);
atom.setCapability(Group.ALLOW_CHILDREN_WRITE);
atomTG.addChild(atom);
aTG.addChild(atomTG);
}
return aTG;
}
]
MODIFY COLOUR CODE
-------------------------------------
this.molecule = m;
Atom[] a = molecule.getAtoms();
Bond[] bonds = molecule.getBonds();
TransformGroup theAtoms;
int numAtomChildren;
switch(mode)
{
case DisplayModeManager.SPACEFILL :
int numChildren = atomsTG.numChildren();
for(int i = 0; i < numChildren; i++)
{
TransformGroup atomTG = (TransformGroup)atomsTG.getChild(i);
Sphere atom = (Sphere)atomTG.getChild(0);
switch(s)
{
case AMINO : atom.setAppearance(getAmino(a[i],
DisplayModeManager.SPACEFILL, false));
break;
case CHAIN : atom.setAppearance(getChain(a[i].getChain(),
a[i].isHetatm(), DisplayModeManager.SPACEFILL, false));
break;
case CPK : atom.setAppearance(getCPK(a[i],
DisplayModeManager.SPACEFILL, false));
break;
}
}
break;
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test39.java
