private void decreaseLevelButtonActionPerformed(ActionEvent event) {
if (currentLevel > 1) {
// resetZoom();
currentLevel--;
labelLevel.setText("Level: " + currentLevel);
kochManager.changeLevel(currentLevel);
}
}
@Override
public void start(Stage primaryStage) {
// Define grid pane
GridPane grid;
grid = new GridPane();
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(25, 25, 25, 25));
// For debug purposes
// Make de grid lines visible
// grid.setGridLinesVisible(true);
// Drawing panel for Koch fractal
kochPanel = new Canvas(kpWidth, kpHeight);
grid.add(kochPanel, 0, 3, 25, 1);
// Labels to present number of edges for Koch fractal
labelNrEdges = new Label("Nr edges:");
labelNrEdgesText = new Label();
grid.add(labelNrEdges, 0, 0, 4, 1);
grid.add(labelNrEdgesText, 3, 0, 22, 1);
// Labels to present time of calculation for Koch fractal
labelCalc = new Label("Calculating:");
labelCalcText = new Label();
grid.add(labelCalc, 0, 1, 4, 1);
grid.add(labelCalcText, 3, 1, 22, 1);
// Labels to present time of drawing for Koch fractal
labelDraw = new Label("Drawing:");
labelDrawText = new Label();
grid.add(labelDraw, 0, 2, 4, 1);
grid.add(labelDrawText, 3, 2, 22, 1);
// Label to present current level of Koch fractal
labelLevel = new Label("Level: " + currentLevel);
grid.add(labelLevel, 0, 6);
// Button to increase level of Koch fractal
Button buttonIncreaseLevel = new Button();
buttonIncreaseLevel.setText("Increase Level");
buttonIncreaseLevel.setOnAction(
new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
increaseLevelButtonActionPerformed(event);
}
});
grid.add(buttonIncreaseLevel, 3, 6);
// Button to decrease level of Koch fractal
Button buttonDecreaseLevel = new Button();
buttonDecreaseLevel.setText("Decrease Level");
buttonDecreaseLevel.setOnAction(
new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
decreaseLevelButtonActionPerformed(event);
}
});
grid.add(buttonDecreaseLevel, 5, 6);
// Button to fit Koch fractal in Koch panel
Button buttonFitFractal = new Button();
buttonFitFractal.setText("Fit Fractal");
buttonFitFractal.setOnAction(
new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
fitFractalButtonActionPerformed(event);
}
});
grid.add(buttonFitFractal, 14, 6);
// Add mouse clicked event to Koch panel
kochPanel.addEventHandler(
MouseEvent.MOUSE_CLICKED,
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
kochPanelMouseClicked(event);
}
});
// Add mouse pressed event to Koch panel
kochPanel.addEventHandler(
MouseEvent.MOUSE_PRESSED,
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
kochPanelMousePressed(event);
}
});
// Add mouse dragged event to Koch panel
kochPanel.setOnMouseDragged(
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
kochPanelMouseDragged(event);
}
});
// Create Koch manager and set initial level
resetZoom();
kochManager = new KochManager(this);
kochManager.changeLevel(currentLevel);
// Create the scene and add the grid pane
Group root = new Group();
Scene scene = new Scene(root, kpWidth + 50, kpHeight + 170);
root.getChildren().add(grid);
// Define title and assign the scene for main window
primaryStage.setTitle("Koch Fractal");
primaryStage.setScene(scene);
primaryStage.show();
}