/**
* Set the scale
*
* @param baseScale the base scale
* @throws RemoteException On badness
* @throws VisADException On badness
*/
public void setScale(double baseScale) throws VisADException, RemoteException {
this.baseScale = baseScale;
if (getDisplayMaster() == null) {
return;
}
ProjectionControl pcontrol = getDisplayMaster().getDisplay().getProjectionControl();
if (pcontrol == null) {
return;
}
double[] matrix = pcontrol.getMatrix();
double[] rot = new double[3];
double[] scale = new double[1];
double[] trans = new double[3];
MouseBehaviorJ3D.unmake_matrix(rot, scale, trans, matrix);
// System.err.println("scale:" + scale[0]);
// It seems like dividing by 15 gives us good results
zoom = (float) scale[0] / (float) baseScale;
}
/**
* Set the DisplayImpl this ScalarMap is linked to
*
* @param d display to link to
* @throws VisADException map is already linked to a DisplayImpl or other VisAD error
*/
synchronized void setDisplay(DisplayImpl d) throws VisADException {
if (d.equals(display)) return;
if (display != null) {
throw new DisplayException(
"ScalarMap.setDisplay: ScalarMap cannot belong" + " to two Displays");
}
display = d;
if (scale_flag) makeScale();
// System.out.println("setDisplay " + Scalar + " -> " + DisplayScalar);
// WLH 27 Nov 2000
if (!(this instanceof ConstantMap)) {
ProjectionControl pcontrol = display.getProjectionControl();
try {
setAspectCartesian(pcontrol.getAspectCartesian());
} catch (RemoteException e) {
}
}
}