JavaFX 的早期版本中有一个 3d-Bar-Chart 演示，但已被删除。
您可以自己创建条形图。只需创建一个网格和上面的一些框即可。这是对答案的轻微修改如何使用 JavaFX 创建 3D/曲面图表 https://stackoverflow.com/questions/31073007/how-to-create-a-3d-surface-chart-with-javafx/31125736#31125736。通过鼠标拖动，使用鼠标滚轮缩放。
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.PerspectiveCamera;
import javafx.scene.Scene;
import javafx.scene.SceneAntialiasing;
import javafx.scene.input.ScrollEvent;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Box;
import javafx.scene.shape.Line;
import javafx.scene.shape.Rectangle;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;
public class BarChart3dDemo extends Application {
private static Random rnd = new Random();
// size of graph
int graphSize = 400;
// variables for mouse interaction
private double mousePosX, mousePosY;
private double mouseOldX, mouseOldY;
private final Rotate rotateX = new Rotate(20, Rotate.X_AXIS);
private final Rotate rotateY = new Rotate(-45, Rotate.Y_AXIS);
@Override
public void start(Stage primaryStage) {
// create axis walls
Group grid = createGrid(graphSize);
// initial cube rotation
grid.getTransforms().addAll(rotateX, rotateY);
// add objects to scene
StackPane root = new StackPane();
root.getChildren().add(grid);
// create bars
double gridSizeHalf = graphSize / 2;
double size = 30;
for (double i = -gridSizeHalf + size; i < gridSizeHalf; i += 50) {
for (double j = -gridSizeHalf + size; j < gridSizeHalf; j += 50) {
double height = rnd.nextDouble() * 300;
Box box = new Box(size, height, size);
// color
PhongMaterial mat = new PhongMaterial();
mat.setDiffuseColor(randomColor());
box.setMaterial(mat);
// location
box.setLayoutY(-height * 0.5 + graphSize * 0.5);
box.setTranslateX(i);
box.setTranslateZ(j);
grid.getChildren().addAll(box);
}
}
// scene
Scene scene = new Scene(root, 1600, 900, true, SceneAntialiasing.BALANCED);
scene.setCamera(new PerspectiveCamera());
scene.setOnMousePressed(me -> {
mouseOldX = me.getSceneX();
mouseOldY = me.getSceneY();
});
scene.setOnMouseDragged(me -> {
mousePosX = me.getSceneX();
mousePosY = me.getSceneY();
rotateX.setAngle(rotateX.getAngle() - (mousePosY - mouseOldY));
rotateY.setAngle(rotateY.getAngle() + (mousePosX - mouseOldX));
mouseOldX = mousePosX;
mouseOldY = mousePosY;
});
makeZoomable(root);
primaryStage.setResizable(false);
primaryStage.setScene(scene);
primaryStage.show();
}
/**
* Axis wall
*/
public static class Axis extends Pane {
Rectangle wall;
public Axis(double size) {
// wall
// first the wall, then the lines => overlapping of lines over walls
// works
wall = new Rectangle(size, size);
getChildren().add(wall);
// grid
double zTranslate = 0;
double lineWidth = 1.0;
Color gridColor = Color.WHITE;
for (int y = 0; y <= size; y += size / 10) {
Line line = new Line(0, 0, size, 0);
line.setStroke(gridColor);
line.setFill(gridColor);
line.setTranslateY(y);
line.setTranslateZ(zTranslate);
line.setStrokeWidth(lineWidth);
getChildren().addAll(line);
}
for (int x = 0; x <= size; x += size / 10) {
Line line = new Line(0, 0, 0, size);
line.setStroke(gridColor);
line.setFill(gridColor);
line.setTranslateX(x);
line.setTranslateZ(zTranslate);
line.setStrokeWidth(lineWidth);
getChildren().addAll(line);
}
}
public void setFill(Paint paint) {
wall.setFill(paint);
}
}
public void makeZoomable(StackPane control) {
final double MAX_SCALE = 20.0;
final double MIN_SCALE = 0.1;
control.addEventFilter(ScrollEvent.ANY, new EventHandler<ScrollEvent>() {
@Override
public void handle(ScrollEvent event) {
double delta = 1.2;
double scale = control.getScaleX();
if (event.getDeltaY() < 0) {
scale /= delta;
} else {
scale *= delta;
}
scale = clamp(scale, MIN_SCALE, MAX_SCALE);
control.setScaleX(scale);
control.setScaleY(scale);
event.consume();
}
});
}
/**
* Create axis walls
*
* @param size
* @return
*/
private Group createGrid(int size) {
Group cube = new Group();
// size of the cube
Color color = Color.LIGHTGRAY;
List<Axis> cubeFaces = new ArrayList<>();
Axis r;
// back face
r = new Axis(size);
r.setFill(color.deriveColor(0.0, 1.0, (1 - 0.5 * 1), 1.0));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-0.5 * size);
r.setTranslateZ(0.5 * size);
cubeFaces.add(r);
// bottom face
r = new Axis(size);
r.setFill(color.deriveColor(0.0, 1.0, (1 - 0.4 * 1), 1.0));
r.setTranslateX(-0.5 * size);
r.setTranslateY(0);
r.setRotationAxis(Rotate.X_AXIS);
r.setRotate(90);
cubeFaces.add(r);
// right face
r = new Axis(size);
r.setFill(color.deriveColor(0.0, 1.0, (1 - 0.3 * 1), 1.0));
r.setTranslateX(-1 * size);
r.setTranslateY(-0.5 * size);
r.setRotationAxis(Rotate.Y_AXIS);
r.setRotate(90);
// cubeFaces.add( r);
// left face
r = new Axis(size);
r.setFill(color.deriveColor(0.0, 1.0, (1 - 0.2 * 1), 1.0));
r.setTranslateX(0);
r.setTranslateY(-0.5 * size);
r.setRotationAxis(Rotate.Y_AXIS);
r.setRotate(90);
cubeFaces.add(r);
// top face
r = new Axis(size);
r.setFill(color.deriveColor(0.0, 1.0, (1 - 0.1 * 1), 1.0));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-1 * size);
r.setRotationAxis(Rotate.X_AXIS);
r.setRotate(90);
// cubeFaces.add( r);
// front face
r = new Axis(size);
r.setFill(color.deriveColor(0.0, 1.0, (1 - 0.1 * 1), 1.0));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-0.5 * size);
r.setTranslateZ(-0.5 * size);
// cubeFaces.add( r);
cube.getChildren().addAll(cubeFaces);
return cube;
}
public static double normalizeValue(double value, double min, double max, double newMin, double newMax) {
return (value - min) * (newMax - newMin) / (max - min) + newMin;
}
public static double clamp(double value, double min, double max) {
if (Double.compare(value, min) < 0)
return min;
if (Double.compare(value, max) > 0)
return max;
return value;
}
public static Color randomColor() {
return Color.rgb(rnd.nextInt(255), rnd.nextInt(255), rnd.nextInt(255));
}
public static void main(String[] args) {
launch(args);
}
}
