javafx-8 - javafx Shape3D带边框

Question

我正在使用大量 3D 形状制作应用程序，我需要它们完全透明并带有边框。我尝试找到任何方法将边框应用于 Shape3D，特别是 Box 和 Sphere，但我找不到任何东西。所以我的问题是：

• 有什么方法可以为 Shape3D 添加边框吗？
• 如果是，该怎么做？

Answer 1

不，没有为 3d 形状添加边框的选项，但您可以使用非常薄的圆柱体（但仅适用于盒子）：

    public void createBoxLines(double contW, double contH, double contD, double x, double y, double z) {
       //You call this method to create a box with a size and location you put in
        //This method calls the createLine method for all the sides of your rectangle
        Point3D p1 = new Point3D(x, y, z);
        Point3D p2 = new Point3D(contW + x, y, z);
        Point3D p3 = new Point3D(x, contH + y, z);
        Point3D p4 = new Point3D(contW + x, contH + y, z);
        createLine(p1, p2);
        createLine(p1, p3);
        createLine(p3, p4);
        createLine(p2, p4);

        Point3D p5 = new Point3D(x, y, contD + z);
        Point3D p6 = new Point3D(contW + x, y, contD + z);
        Point3D p7 = new Point3D(x, contH + y, contD + z);
        Point3D p8 = new Point3D(contW + x, contH + y, contD + z);
        createLine(p5, p6);
        createLine(p5, p7);
        createLine(p7, p8);
        createLine(p6, p8);

        createLine(p1, p5);
        createLine(p2, p6);
        createLine(p3, p7);
        createLine(p4, p8);
    }

    double strokewidth = 1;
    public void createLine(Point3D origin, Point3D target) {        
        //creates a line from one point3d to another

        Point3D yAxis = new Point3D(0, 1, 0);
        Point3D diff = target.subtract(origin);
        double height = diff.magnitude();

        Point3D mid = target.midpoint(origin);
        Translate moveToMidpoint = new Translate(mid.getX(), mid.getY(), mid.getZ());

        Point3D axisOfRotation = diff.crossProduct(yAxis);
        double angle = Math.acos(diff.normalize().dotProduct(yAxis));
        Rotate rotateAroundCenter = new Rotate(-Math.toDegrees(angle), axisOfRotation);

        Cylinder line = new Cylinder(strokewidth, height);

        line.getTransforms().addAll(moveToMidpoint, rotateAroundCenter);

        myGroup.getChildren().add(line);
    }

createLine 方法可以单独用于在不同点之间制作线。我无法为该方法提供很多评论，因为我基本上是从某个博客中复制的。虽然我很难再次找到那个博客。

Answer 2

感谢 Alex Quilliam 感谢我能够改进我的程序的代码。 https://i.imgur.com/HY2x9vF.png

Cylinder line = new Cylinder(strokewidth, height);

↓</p>

Box line = new Box(strokewidth, height, strokewidth);

JavaFX_3D_Cube_Outline_Test