如何向AnchorPane添加3D表面

Question

如何将3D曲面添加到view.fxml ，Scene Builder面板上没有“曲面”之类的“东西”。 我的场景构建器层次结构如下所示：

和ss应用-就像我们可以看到在左上角有东西一样，表面应该在中间。

我想先添加一些3D表面样本：我的控制器代码：

    package sample.packet3D;

import org.fxyz.cameras.CameraTransformer;

import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.fxml.FXML;
import javafx.scene.Group;
import javafx.scene.PerspectiveCamera;
import javafx.scene.PointLight;
import javafx.scene.layout.AnchorPane;


public class Window3DController {

    @FXML
    private AnchorPane anchorPane;
    @FXML
    private Group group;

    private Window3DBuilder window3dBuilder;
    private PerspectiveCamera perspectiveCamera;



    @FXML
    public void initialize() {
        perspectiveCamera = new PerspectiveCamera(true);

        window3dBuilder = new Window3DBuilder( group, perspectiveCamera );
        window3dBuilder.createScene();



        group.sceneProperty().addListener(new InvalidationListener() {

            @Override
            public void invalidated(Observable observable) {
                group.getScene().setCamera(perspectiveCamera);
                group.sceneProperty().removeListener(this);
            }
        });
    }
}

逻辑类：

   package sample.packet3D;


import org.fxyz.cameras.CameraTransformer;
import org.fxyz.shapes.primitives.SurfacePlotMesh;

import javafx.geometry.Point3D;
import javafx.scene.Group;
import javafx.scene.PerspectiveCamera;
import javafx.scene.PointLight;
import javafx.scene.SceneAntialiasing;
import javafx.scene.SubScene;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.CullFace;
import javafx.scene.shape.TriangleMesh;
import javafx.scene.transform.Rotate;

public class Window3DBuilder {

    private Group group;
    private SurfacePlotMesh surface;
    private PerspectiveCamera perspectiveCamera;
    private CameraTransformer cameraTransformer;
    private PointLight light;

    public Window3DBuilder( Group group, PerspectiveCamera perspectiveCamera ) {
        this.group = group;
        this.perspectiveCamera = perspectiveCamera;
        cameraTransformer = new CameraTransformer();
    }

    public void createScene() {

        createSurface();
        createLight(); 
        group.getChildren().addAll(surface);

        cameraTransformer.setTranslate(0, 0, 0);
        cameraTransformer.getChildren().addAll(perspectiveCamera);

        perspectiveCamera.setNearClip(0.1);
        perspectiveCamera.setFarClip(100000.0);
        perspectiveCamera.setTranslateX((group.getBoundsInLocal().getMaxX() + group.getBoundsInLocal().getMinX()) / 2d);
        perspectiveCamera.setTranslateY((group.getBoundsInLocal().getMaxY() + group.getBoundsInLocal().getMinY()) / 2d);
        double max = Math.max(group.getBoundsInLocal().getWidth(), group.getBoundsInLocal().getHeight());
        perspectiveCamera.setTranslateZ(-2 * max);

    }

    public void createLight() {
        light = new PointLight(Color.WHITE);
        cameraTransformer.getChildren().add(light);
        light.setTranslateX(perspectiveCamera.getTranslateX());
        light.setTranslateY(perspectiveCamera.getTranslateY());
        light.setTranslateZ(perspectiveCamera.getTranslateZ());
    }

    private void createSurface() {
        surface = new SurfacePlotMesh(
                p-> Math.sin(p.magnitude() + 1e-10) / (p.magnitude() + 1e-10),
                20, 20, 100, 100, 4);
        surface.setCullFace(CullFace.NONE);
        surface.setTextureModeVertices3D(1530, p -> p.magnitude());
        surface.getTransforms().addAll(new Rotate(200, Rotate.X_AXIS), new Rotate(-20, Rotate.Y_AXIS));
    }



}

并查看：

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.effect.*?>
<?import javafx.scene.canvas.*?>
<?import javafx.scene.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.packet3D.Window3DController">
   <children>
      <Group fx:id="group">
         <effect>
            <Lighting>
               <bumpInput>
                  <Shadow />
               </bumpInput>
               <light>
                  <Light.Distant />
               </light>
            </Lighting>
         </effect>
      </Group>
      <PerspectiveCamera fx:id="perspectiveCamera" visible="false" />
   </children>
</AnchorPane>

我究竟做错了什么 ？ 有人可以帮我吗？ 这也是我按下按钮进入的窗口之一。

@FXML
    public void moveTo3DScene(ActionEvent event) throws IOException {
        Stage stage3D = (Stage) ((Node) event.getSource()).getScene().getWindow();
        Parent parent3D = FXMLLoader.load(getClass().getResource("packet3D/Window3DSceneView.fxml"));
        stage3D.setTitle("Animation 3D");
        stage3D.setScene(new Scene(parent3D, 1200, 800));
        stage3D.show();

    }

Answer 1

您对PerspectiveCamera有问题。 它具有一个名为fixedEyeAtCameraZero的布尔参数，默认情况下为false，并且在场景的左上角显示了一个很小的曲面。

我们需要将其设置为true，因此：

如果fixedEyeAtCameraZero为true，则眼睛位置在相机的本地坐标中固定为（0，0，0）

但是很遗憾，您无法设置参数，没有setFixedEyeAtCameraZero()方法。 更改它的唯一方法是使用相机构造函数。

这意味着您必须从FXML文件中删除PerspectiveCamera ，并通过控制器上的代码将其添加

public class Window3DController {

    @FXML
    private AnchorPane anchorPane;
    @FXML
    private Group group;

    private Window3DBuilder window3dBuilder;
    private PerspectiveCamera perspectiveCamera;

    @FXML
    public void initialize() {
        perspectiveCamera = new PerspectiveCamera(true);

        window3dBuilder = new Window3DBuilder(group, perspectiveCamera);
        window3dBuilder.createScene();

        group.sceneProperty().addListener(new InvalidationListener() {
            @Override
            public void invalidated(Observable observable) {
                group.getScene().setCamera(perspectiveCamera);
                group.sceneProperty().removeListener(this);
            }
        });
    } 

}

最后一步：您需要为相机设置一些参数，基本上是基于网格大小的z坐标：

public void createScene() {
    createSurface();
    group.getChildren().addAll(surface);

    perspectiveCamera.setNearClip(0.1);
    perspectiveCamera.setFarClip(100000.0);
    perspectiveCamera.setTranslateX((group.getBoundsInLocal().getMaxX() + group.getBoundsInLocal().getMinX()) / 2d);
    perspectiveCamera.setTranslateY((group.getBoundsInLocal().getMaxY() + group.getBoundsInLocal().getMinY()) / 2d);
    double max = Math.max(group.getBoundsInLocal().getWidth(), group.getBoundsInLocal().getHeight());
    perspectiveCamera.setTranslateZ(-2 * max);
}

这将显示您的表面，但不像您期望的那样：您正在应用的效果适用于2D：

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.Group?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="Window3DController">
   <children>
      <Group fx:id="group" />
   </children>
</AnchorPane>

删除这些效果，并使用PointLight通过代码添加它们：

public class Window3DBuilder {

    private final Group group;
    private SurfacePlotMesh surface;
    private final CameraTransformer cameraTransformer;
    private final PerspectiveCamera perspectiveCamera;
    private PointLight light;

    public Window3DBuilder( Group group, PerspectiveCamera perspectiveCamera ) {
        this.group = group;
        this.perspectiveCamera = perspectiveCamera;
        cameraTransformer = new CameraTransformer();
    }

    public void createScene() {
        createSurface();
        group.getChildren().addAll(surface, cameraTransformer);

        cameraTransformer.setTranslate(0, 0, 0);
        cameraTransformer.getChildren().addAll(perspectiveCamera);

        perspectiveCamera.setNearClip(0.1);
        perspectiveCamera.setFarClip(100000.0);
        perspectiveCamera.setTranslateX((group.getBoundsInLocal().getMaxX() + group.getBoundsInLocal().getMinX()) / 2d);
        perspectiveCamera.setTranslateY((group.getBoundsInLocal().getMaxY() + group.getBoundsInLocal().getMinY()) / 2d);
        double max = Math.max(group.getBoundsInLocal().getWidth(), group.getBoundsInLocal().getHeight());
        perspectiveCamera.setTranslateZ(-2 * max);
        createLight();
    }

    public void createLight() {
        light = new PointLight(Color.WHITE);
        cameraTransformer.getChildren().add(light);
        light.setTranslateX(perspectiveCamera.getTranslateX());
        light.setTranslateY(perspectiveCamera.getTranslateY());
        light.setTranslateZ(perspectiveCamera.getTranslateZ() / 10);
    }

    private void createSurface() {
        surface = new SurfacePlotMesh(
                p-> Math.sin(p.magnitude() + 1e-10) / (p.magnitude() + 1e-10),
                20, 20, 100, 100, 4);
        surface.setCullFace(CullFace.NONE);
        surface.setTextureModeVertices3D(1530, p -> p.magnitude());
        surface.getTransforms().addAll(new Rotate(200, Rotate.X_AXIS), new Rotate(-20, Rotate.Y_AXIS));
    }

}

Answer 2

我想将相机保存在.fxml文件中。 我基于PerspectiveCamera创建了一个自定义控件。

从一个非常简单的课程开始...

import javafx.scene.PerspectiveCamera;


public class PerspectiveCamera3D extends PerspectiveCamera {

// force 3D
public PerspectiveCamera3D() {
    super(true);
}

// toss the parameter, force 3D
public PerspectiveCamera3D(final boolean fixedEyeAtCameraZero) {
    this();
}
}

导出到.jar文件。 启动Scene Builder并打开.fxml文件，将其放置在相机要放置的位置。

打开“库”标题上的“齿轮”菜单。 然后导入FXML / Jar。 导入新创建的.jar文件。 将弹出一个对话框，列出您的控件。 确认后，控件将出现在自定义菜单中。 就像其他任何控件一样，您的控件现在可以使用了。

“ Fixed Eye ...”复选框将仍然是只读的，但将被选中。 可以根据需要设置所有其他属性。 要设置fx：id，只需将以下内容添加到您的控制器代码中...

@FXML
public PerspectiveCamera3D cambot;

这是一个示例的更详细信息... https://rterp.wordpress.com/2014/07/28/adding-custom-javafx-component-to-scene-builder-2-0-part-2/

我这样做的唯一问题是，通过在Eclipse中单击.fxml文件来启动Scene Builder时，会导致异常（我认为这是我计算机上的本地问题，因为我的启动方式和他们的工作目录）。 如果我打开Scene Builder，然后从Scene Builder的“文件”菜单中打开.fxml文件，它会很好地工作。