/**
* React to changes in model by requesting new intersection of the model.
*
* @param model
*/
public void modelUpdated(algs.example.gui.model.Model<E> model) {
Model<E> mod = (Model<E>) model;
int numK = mod.intersections().size();
message("Number of intersections:" + numK);
message("Time to compute:" + mod.algorithmTime());
getCanvas().redrawState();
getCanvas().repaint();
}
/**
* If there is a line being dragged (ActiveLineSegmentDecorator) we want to add that line to the
* objects b
*/
protected void refreshObjects() {
if (model.items() == null) {
error("Invalid Model!");
return;
}
message(model.items().length + " entities constructed");
int numK = model.computeIntersections(algorithm);
message("Number of intersections:" + numK);
message("Time to compute:" + algorithm.time());
getCanvas().redrawState();
getCanvas().repaint();
}
// Properly refresh display with items.
private void updateDisplay(E[] items) {
// nothing to do.
if (items == null) {
return;
}
// transform into AWT coordinates
int width = getCanvas().getWidth();
int height = getCanvas().getHeight();
// create set of entities proportional to the image
nativeItems = items;
items = transform(items, width, height);
model.setItems(items);
model.setDynamicEntity(null); // clear away...
refreshObjects();
// force redraw since state has changed...
getCanvas().redrawState();
}
/** Instantiate GUI with reasonable title. */
private void initialize() {
this.setSize(850, 600);
this.setContentPane(getPanel());
this.setTitle("Algorithms in a Nutshell: Intersection Example for " + model.types());
}