public void propertyChange(PropertyChangeEvent pce) {
Object source = pce.getSource();
if (source == posSlider_x) {
double posX = ((Double) pce.getNewValue()).doubleValue();
posDisk.x = posX;
Disk.setNode3D(ShapeNodeDisk);
Disk.setPosition(posDisk);
PlaceBNVectors();
} else if (source == posSlider_y) {
double posY = ((Double) pce.getNewValue()).doubleValue();
posDisk.y = posY;
Disk.setNode3D(ShapeNodeDisk);
Disk.setPosition(posDisk);
PlaceBNVectors();
} else if (source == angDisk) {
angleDisk = ((Double) pce.getNewValue()).doubleValue();
double angDisk_rad = angleDisk * Math.PI / 180.;
double compx = Math.cos(angDisk_rad);
double compy = Math.sin(angDisk_rad);
Disk.setNode3D(ShapeNodeDisk);
Disk.setDirection(new Vector3d(compx, compy, 0.));
flux_plot.setNormalDisk(new Vector3d(compx, compy, 0.));
PlaceBNVectors();
} else if (source == radDisk) {
radiusDisk = ((Double) pce.getNewValue()).doubleValue();
ShapeNodeDisk.setGeometry(Cylinder.makeGeometry(32, radiusDisk, heightDisk));
Disk.setNode3D(ShapeNodeDisk);
arrowScale = arrowScaleInitial * radiusDisk / radiusDiskInitial;
flux_plot.setRadiusDisk(radiusDisk);
PlaceBNVectors();
} else {
super.propertyChange(pce);
}
}
/** Method to place the magnetic field vectors and normals on the disk. */
public void PlaceBNVectors() {
// first place the vectors on the top of the cylinder
Vector3d normalTop = null;
Vector3d centerTop = new Vector3d(0, 0, 0);
double compx = Math.cos(angleDisk * Math.PI / 180.);
double compy = Math.sin(angleDisk * Math.PI / 180.);
normalTop = new Vector3d(compx, compy, 0.);
normalTop.scale(heightDisk / 2.);
centerTop.add(normalTop);
centerTop.add(posDisk);
for (int j = 0; j < numRadDisk; j++) {
double rad = (j + 1) * radiusDisk / (numRadDisk + 1);
for (int i = 0; i < numAziTopDisk; i++) {
double aziangle = i * 2. * Math.PI / (numAziTopDisk * 1.);
Vector3d azipos = new Vector3d(0., Math.cos(aziangle), Math.sin(aziangle));
Vector3d aziposTrans = new Vector3d(0, 0, 0);
Vector3d azidirTrans = new Vector3d(1, 0, 0);
Vector3d azidir = new Vector3d(1., 0., 0.);
azipos.scale(rad);
aziposTrans.x = azipos.x * compx - azipos.y * compy;
aziposTrans.y = azipos.x * compy + azipos.y * compx;
aziposTrans.z = azipos.z;
azidirTrans.x = azidir.x * compx - azidir.y * compy;
azidirTrans.y = azidir.x * compy + azidir.y * compx;
azidirTrans.z = azidir.z;
aziposTrans.add(centerTop);
theFieldDiskTop[i][j].setPosition(aziposTrans);
theFieldDiskTop[i][j].setScale(arrowScale);
theNormalDiskTop[i][j].setPosition(aziposTrans);
theNormalDiskTop[i][j].setValue(azidirTrans);
theNormalDiskTop[i][j].setDrawn(true);
theNormalDiskTop[i][j].setScale(arrowScale);
// here we make the field vector tip be at the location of the arrow if the arrow points
// inward at the local normal
if (theEngine != null) theEngine.requestSpatial();
}
}
}
