public static void setEyePoint(Globe globe, BasicOrbitView view, Vec4 newEyePoint)
{
if (globe == null)
{
var msg = Logging.getMessage("nullValue.GlobeIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
if (view == null)
{
var msg = Logging.getMessage("nullValue.ViewIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
if (newEyePoint == null)
{
var msg = Logging.getMessage("nullValue.PointIsNull");
Logging.logger().severe(msg);
throw new ArgumentException(msg);
}
// Translate the view's modelview matrix to the specified new eye point, and compute the new center point by
// assuming that the view's zoom distance does not change.
var translation = view.getModelviewMatrix().extractEyePoint().subtract3(newEyePoint);
var modelview = view.getModelviewMatrix().multiply(Matrix.fromTranslation(translation));
var eyePoint = modelview.extractEyePoint();
var forward = modelview.extractForwardVector();
var centerPoint = eyePoint.add3(forward.multiply3(view.getZoom()));
// Set the view's properties from the new modelview matrix.
var parameters = modelview.extractViewingParameters(centerPoint, view.getRoll(), globe);
view.setCenterPosition((Position)parameters.getValue(AVKey.ORIGIN));
view.setHeading((Angle)parameters.getValue(AVKey.HEADING));
view.setPitch((Angle)parameters.getValue(AVKey.TILT));
view.setRoll((Angle)parameters.getValue(AVKey.ROLL));
view.setZoom((double)parameters.getValue(AVKey.RANGE));
view.setViewOutOfFocus(true);
}
public void next()
{
var modelview = view.getModelviewMatrix();
var point = modelview.extractEyePoint();
if (point.distanceTo3(eyePoint) > STOP_DISTANCE)
{
point = Vec4.mix3(1 - smoothing, point, eyePoint);
setEyePoint(globe, view, point);
}
else
{
setEyePoint(globe, view, eyePoint);
stop();
}
}
