When you create your appearance for your shape, you
have to set some capability bits, for example :
Appearance app = new Appearance();
app.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_WRITE);
app.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_READ);
Color3f objColor = new Color3f(Color.red);
ColoringAttributes ca = new
ColoringAttributes();
ca.setColor(objColor);
app.setColoringAttributes(ca);
....
Shape3D myShape = new Shape3D(myGeometry, app);
If you want to change the color appearance in a
keyPressed behaviour :
.....
public void processStimulus(Enumeration wakeup)
{
.....
Appearance shapeAppearance;
shapeAppearance = myShape.getAppearance();
ColoringAttributes shapeColoring =
shapeAppearance.getColoringAttributes();
ColoringAttributes caGreen =
new ColoringAttributes(new
Color3f(Color.green), ColoringAttributes.FASTEST);
shapeAppearance.setColoringAttributes(caGreen);
....
}
You have to pass myShape in the constructor of the
behaviour or make the object visible outside the
behaviour class
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