public void createNodes(Graph graph, double[][] coordinates) {
nodeArray = new ArrayList<>();
double radius = graph.getNumberOfNodes() < 25 ? 100 / graph.getNumberOfNodes() : 4;
for (int i = 0; i < coordinates.length; i++) {
Circle nodeI = new Circle(radius);
nodeI.setTranslateX(coordinates[i][0]);
nodeI.setTranslateY(coordinates[i][1]);
Tooltip tip =
new Tooltip("node number " + (i + 1) + ", \"" + root.sequence.getText().charAt(i) + "\"");
Tooltip.install(nodeI, tip);
nodeI.setId(root.sequence.getText().substring(i, i + 1));
Timeline timeline = new Timeline();
nodeI.setOnMouseDragged(
event -> {
nodeI.setTranslateX(event.getSceneX() - root.nodes.getLayoutX());
nodeI.setTranslateY(event.getSceneY() - root.nodes.getLayoutY());
});
final int finalI = i;
nodeI.setOnMouseReleased(
event -> {
double[][] newCoordinates =
SpringEmbedder.computeSpringEmbedding(
100, graph.getNumberOfNodes(), graph.getEdges(), null);
SpringEmbedder.centerCoordinates(
newCoordinates,
0,
(int) root.getWidth(),
20,
(int) (root.getHeight() - root.vbox.getHeight() * 1.5));
timeline
.getKeyFrames()
.add(
new KeyFrame(
Duration.millis(200),
new KeyValue(nodeI.translateXProperty(), coordinates[finalI][0])));
timeline
.getKeyFrames()
.add(
new KeyFrame(
Duration.millis(200),
new KeyValue(nodeI.translateYProperty(), coordinates[finalI][1])));
timeline.play();
});
nodeI.disableProperty().bind(Bindings.not(root.animate.selectedProperty()));
root.nodes.getChildren().add(nodeI);
nodeArray.add(nodeI);
}
}
public void simpleDrawing() {
Graph graph = createGraph();
double[][] coordinates =
SpringEmbedder.computeSpringEmbedding(
100, graph.getNumberOfNodes(), graph.getEdges(), null);
root.nodes.getChildren().clear();
SpringEmbedder.centerCoordinates(
coordinates,
0,
(int) root.getWidth(),
20,
(int) (root.getHeight() - root.vbox.getHeight() * 1.5));
createNodes(graph, coordinates);
createEdges(graph);
}
public void animateDrawing() {
Graph graph = createGraph();
double[][] coordinates = new double[graph.getNumberOfNodes()][2];
if (nodeArray == null) {
for (double[] point : coordinates) {
point[0] = random();
point[1] = random();
}
} else {
for (int i = 0; i < coordinates.length; i++) {
coordinates[i][0] = nodeArray.get(i).getTranslateX();
coordinates[i][1] = nodeArray.get(i).getTranslateY();
}
}
root.nodes.getChildren().clear();
SpringEmbedder.centerCoordinates(
coordinates,
0,
(int) root.getWidth(),
20,
(int) (root.getHeight() - root.vbox.getHeight() * 1.5));
createNodes(graph, coordinates);
createEdges(graph);
animate(graph);
}
public void animate(Graph graph) {
final Timeline timeline = new Timeline();
double[][] endCoordinates =
SpringEmbedder.computeSpringEmbedding(
100, graph.getNumberOfNodes(), graph.getEdges(), null);
SpringEmbedder.centerCoordinates(
endCoordinates,
0,
(int) root.getWidth(),
20,
(int) (root.getHeight() - root.vbox.getHeight() * 1.5));
Duration duration = Duration.millis(3000);
for (int i = 0; i < nodeArray.size(); i++) {
KeyFrame keyFrameX =
new KeyFrame(
duration, new KeyValue(nodeArray.get(i).translateXProperty(), endCoordinates[i][0]));
KeyFrame keyFrameY =
new KeyFrame(
duration, new KeyValue(nodeArray.get(i).translateYProperty(), endCoordinates[i][1]));
timeline.getKeyFrames().addAll(keyFrameX, keyFrameY);
}
timeline.play();
}
@Override
public void start(Stage primaryStage) throws Exception {
// UI fields
VBox mainBox = new VBox();
sequenceField = new TextField(myLabels.TEXTAREA_SEQUENCE);
bracketField = new TextField(myLabels.TEXTAREA_BRACKET);
HBox buttonBox = new HBox();
Button computeButton = new Button(myLabels.BUTTON_COMPUTE);
Button drawButton = new Button(myLabels.BUTTON_DRAW);
CheckBox animateChecker = new CheckBox(myLabels.CHECKBOX_ANIMATE);
drawPane = new Pane();
buttonBox.getChildren().addAll(computeButton, drawButton, animateChecker);
mainBox.getChildren().addAll(sequenceField, bracketField, buttonBox, drawPane);
// Compute Button disable
sequenceField
.textProperty()
.addListener(
(observable, oldValue, newValue) -> {
if (newValue.length() == 0) {
computeButton.setDisable(true);
} else {
computeButton.setDisable(false);
}
});
// Animate Checkbox
animateChecker.setOnAction(
(value) -> {
if (animateChecker.isSelected() != isAnimated) {
isAnimated = animateChecker.isSelected();
// set Eventhandler für Drag & Drop
for (Circle currentCircle : circleList) {
currentCircle.setOnMousePressed(isAnimated ? circleOnMousePressedEventHandler : null);
currentCircle.setOnMouseDragged(isAnimated ? circleOnMouseDraggedEventHandler : null);
currentCircle.setOnMouseReleased(
isAnimated ? circleOnMouseReleasedEventHandler : null);
}
}
});
// computeButton
computeButton.setOnAction(
(value) -> {
bracketField.setText(new Nussinov(sequenceField.getText()).getBracketNotation());
});
// drawButton
drawButton.setOnAction(
(value) -> {
Graph myGraph = new Graph();
try {
myGraph.parseNotation(bracketField.getText());
} catch (IOException e) {
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle(myLabels.ALERT_TITLE);
alert.setHeaderText(myLabels.ALTERT_MESSAGE);
alert.setContentText(bracketField.getText());
alert.showAndWait();
}
coordsRepresentation[0] =
SpringEmbedder.computeSpringEmbedding(
iterations, myGraph.getNumberOfNodes(), myGraph.getEdges(), null);
SpringEmbedder.centerCoordinates(coordsRepresentation[0], 50, 550, 50, 550);
drawShapes(
drawPane, coordsRepresentation[0], myGraph.getEdges(), myGraph.getNumberOfNodes());
});
// prepare scene
Scene scene = new Scene(mainBox, 600, 800);
primaryStage.setScene(scene);
primaryStage.setTitle(myLabels.CAPTION);
// show scene
primaryStage.show();
}