public void mouseDragged(MouseEvent evt) {
mx = evt.getX();
my = evt.getY();
// Check if this is a rectangle drawing drag
if ((evt.getModifiers() & InputEvent.BUTTON2_MASK) != 0) {
// rectx2 = evt.getX();
// recty2 = evt.getY();
} else {
rotmat.setIdentity();
rotmat.rotate((float) (my - omy), 'x');
rotmat.rotate((float) (mx - omx), 'y');
for (int i = 0; i < npoint; i++) {
SequencePoint sp = (SequencePoint) points.elementAt(i);
sp.coord[0] -= centre[0];
sp.coord[1] -= centre[1];
sp.coord[2] -= centre[2];
// Now apply the rotation matrix
sp.coord = rotmat.vectorMultiply(sp.coord);
// Now translate back again
sp.coord[0] += centre[0];
sp.coord[1] += centre[1];
sp.coord[2] += centre[2];
}
for (int i = 0; i < 3; i++) {
axes[i] = rotmat.vectorMultiply(axes[i]);
}
omx = mx;
omy = my;
redrawneeded = true;
paint(this.getGraphics());
}
return;
}
public RotatableCanvas(Object parent, AlignViewport av, Controller c, Vector points, int npoint) {
this.parent = parent;
this.points = points;
this.npoint = npoint;
this.controller = c;
this.av = av;
controller.addListener(this);
prefsize = getPreferredSize();
orig = new float[npoint][3];
for (int i = 0; i < npoint; i++) {
SequencePoint sp = (SequencePoint) points.elementAt(i);
for (int j = 0; j < 3; j++) {
orig[i][j] = sp.coord[j];
}
}
// Initialize the matrices to identity
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (i != j) {
idmat.addElement(i, j, 0);
objmat.addElement(i, j, 0);
rotmat.addElement(i, j, 0);
} else {
idmat.addElement(i, j, 0);
objmat.addElement(i, j, 0);
rotmat.addElement(i, j, 0);
}
}
}
axes = new float[3][3];
initAxes();
findCentre();
findWidth();
scale = findScale();
// System.out.println("Scale factor = " + scale);
addMouseListener(this);
addKeyListener(this);
if (getParent() != null) {
getParent().addKeyListener(this);
}
addMouseMotionListener(this);
// Add rubberband
rubberband = new RubberbandRectangle(this);
rubberband.setActive(true);
rubberband.addListener(this);
}