如何在JavaFX的8创建STL的3D造型？ [英] How to create 3d shape from STL in JavaFX 8?

问题描述

我有类STLFile返回两个数组：一个法线的坐标和另一个顶点的coords。所以现在我想创建三维形状，在我的JavaFX应用程序，这些坐标。问题是，我怎么能做到这一点没有纹理。使用我做了TriangleMesh官方指导坐标，并将其添加到MeshView。但遗憾的是没有出现在现场。所以，任何人都可以解释我如何做到这一点，因为在官方指南的描述不能称其足够了吗？

I have class STLFile which returns two arrays: one with coordinates of normals and another one with vertices coords. So now I want to create 3d shape with these coordinates in my JavaFX app. The problem is that how can I do this without textures. Using the official guide I've made TriangleMesh with coordinates and add it to MeshView. But unfortunately nothing appeared in the scene. So can anybody explain me how to do this, because the description in official guide couldn't be called sufficient?

推荐答案

您可以使用互动网的JavaFX STL模型导入。

JewelViewer.java 的

import com.interactivemesh.jfx.importer.stl.StlMeshImporter;
import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.paint.Color;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Mesh;
import javafx.scene.shape.MeshView;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;

import java.io.File;

public class JewelViewer extends Application {

  private static final String MESH_FILENAME =
    "/Users/lilyshard/Downloads/Perfect Diamond/Perfect Diamond.STL";

  private static final double MODEL_SCALE_FACTOR = 400;
  private static final double MODEL_X_OFFSET = 0; // standard
  private static final double MODEL_Y_OFFSET = 0; // standard

  private static final int VIEWPORT_SIZE = 800;

  private static final Color lightColor = Color.rgb(244, 255, 250);
  private static final Color jewelColor = Color.rgb(0, 190, 222);

  private Group root;
  private PointLight pointLight;

  static MeshView[] loadMeshViews() {
    File file = new File(MESH_FILENAME);
    StlMeshImporter importer = new StlMeshImporter();
    importer.read(file);
    Mesh mesh = importer.getImport();

    return new MeshView[] { new MeshView(mesh) };
  }

  private Group buildScene() {
    MeshView[] meshViews = loadMeshViews();
    for (int i = 0; i < meshViews.length; i++) {
      meshViews[i].setTranslateX(VIEWPORT_SIZE / 2 + MODEL_X_OFFSET);
      meshViews[i].setTranslateY(VIEWPORT_SIZE / 2 + MODEL_Y_OFFSET);
      meshViews[i].setTranslateZ(VIEWPORT_SIZE / 2);
      meshViews[i].setScaleX(MODEL_SCALE_FACTOR);
      meshViews[i].setScaleY(MODEL_SCALE_FACTOR);
      meshViews[i].setScaleZ(MODEL_SCALE_FACTOR);

      PhongMaterial sample = new PhongMaterial(jewelColor);
      sample.setSpecularColor(lightColor);
      sample.setSpecularPower(16);
      meshViews[i].setMaterial(sample);

      meshViews[i].getTransforms().setAll(new Rotate(38, Rotate.Z_AXIS), new Rotate(20, Rotate.X_AXIS));
    }

    pointLight = new PointLight(lightColor);
    pointLight.setTranslateX(VIEWPORT_SIZE*3/4);
    pointLight.setTranslateY(VIEWPORT_SIZE/2);
    pointLight.setTranslateZ(VIEWPORT_SIZE/2);
    PointLight pointLight2 = new PointLight(lightColor);
    pointLight2.setTranslateX(VIEWPORT_SIZE*1/4);
    pointLight2.setTranslateY(VIEWPORT_SIZE*3/4);
    pointLight2.setTranslateZ(VIEWPORT_SIZE*3/4);
    PointLight pointLight3 = new PointLight(lightColor);
    pointLight3.setTranslateX(VIEWPORT_SIZE*5/8);
    pointLight3.setTranslateY(VIEWPORT_SIZE/2);
    pointLight3.setTranslateZ(0);

    Color ambientColor = Color.rgb(80, 80, 80, 0);
    AmbientLight ambient = new AmbientLight(ambientColor);

    root = new Group(meshViews);
    root.getChildren().add(pointLight);
    root.getChildren().add(pointLight2);
    root.getChildren().add(pointLight3);
    root.getChildren().add(ambient);

    return root;
  }

  private PerspectiveCamera addCamera(Scene scene) {
    PerspectiveCamera perspectiveCamera = new PerspectiveCamera();
    System.out.println("Near Clip: " + perspectiveCamera.getNearClip());
    System.out.println("Far Clip:  " + perspectiveCamera.getFarClip());
    System.out.println("FOV:       " + perspectiveCamera.getFieldOfView());

    scene.setCamera(perspectiveCamera);
    return perspectiveCamera;
  }

  @Override
  public void start(Stage primaryStage) {
    Group group = buildScene();
    group.setScaleX(2);
    group.setScaleY(2);
    group.setScaleZ(2);
    group.setTranslateX(50);
    group.setTranslateY(50);

    Scene scene = new Scene(group, VIEWPORT_SIZE, VIEWPORT_SIZE, true);
    scene.setFill(Color.rgb(10, 10, 40));
    addCamera(scene);
    primaryStage.setTitle("Jewel Viewer");
    primaryStage.setScene(scene);
    primaryStage.show();
  }

  public static void main(String[] args) {
    System.setProperty("prism.dirtyopts", "false");
    launch(args);
  }
}

STL源模型信息的

-- Model information --

Model Name : Perfect Diamond
Author : Scott Allen
Publisher : mtgtopdeck

You can view this model here :
http://www.3dvia.com/content/024BE6380A1C2E00
More models about this author :
http://www.3dvia.com/mtgtopdeck


-- Attached license --

A license is attached to the Perfect Diamond model and all related media.
You must agree with this licence before using the enclosed media.

License : Attribution-NonCommercial 2.5
Detailed license : http://creativecommons.org/licenses/by-nc/2.5/

The licenses used by 3dvia are based on Creative Commons Licenses.
More info: http://creativecommons.org/about/licenses/meet-the-licenses

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