public void stateChanged(ChangeEvent e) {
if (e.getSource().equals(sldIterations)) {
txtIterations.setText(Integer.toString((int) sldIterations.getValue()));
if (preview) {
parent.setPreviewMap(parent.getHeightMap(), 128);
parent.refreshMiniView(apply(preview));
}
}
}
private int[][] apply(boolean preview) {
int[][] heightmap = new int[128][128];
int step = 1;
if (!preview) {
parent.setProgressBar(sldIterations.getValue());
heightmap = parent.cloneArray(parent.getHeightMap());
} else {
heightmap = parent.getPreviewMap();
step =
(int)
Math.ceil(
(double) parent.getHeightMap().length / (double) parent.getPreviewMap().length);
}
for (int i = 0; i < sldIterations.getValue() / step; i++) {
heightmap = applyThermal(heightmap);
if (!preview) parent.increaseProgressBar();
}
if (!preview) parent.resetProgressBar();
return heightmap;
}
/**
* Sets the panel in which the GUI should be implemented Any standard swing components can be used
*
* @param panel The GUI panel
*/
public void setPanel(JPanel panel) {
this.panel = panel;
panel.setLayout(new BorderLayout());
JLabel label =
new JLabel("Produces an effect similar to thermal erosion", (int) JLabel.CENTER_ALIGNMENT);
panel.add(label, BorderLayout.PAGE_START);
JPanel iterations = new JPanel();
iterations.setLayout(new FlowLayout());
label = new JLabel("Iterations ");
iterations.add(label);
sldIterations = new JSlider(1, 100, 1);
sldIterations.addChangeListener(this);
iterations.add(sldIterations);
txtIterations = new JTextField(Integer.toString((int) sldIterations.getValue()));
txtIterations.setEditable(false);
txtIterations.setPreferredSize(new Dimension(35, 25));
iterations.add(txtIterations);
panel.add(iterations, BorderLayout.CENTER);
btnApply = new JButton("Apply Thermal Erosion");
btnApply.addActionListener(this);
panel.add(btnApply, BorderLayout.PAGE_END);
if (preview) parent.refreshMiniView(apply(preview));
}
/**
* Called when an action event occurs, in this case the 'Invert Terrain' button is the only
* component which generates an action event
*
* @param e The action event generated
*/
public void actionPerformed(ActionEvent e) {
if (e.getSource().equals(btnApply)) {
parent.amendLog("Applying filter: " + toString());
parent.setHeightMap(apply(false));
}
}