Java3D从点绘制实体区域/立方体

Question

我有一个我想要绘制为实心区域的点列表。 我可以将这些点绘制为LineStripArray（见图）。 但是当我尝试将这些点绘制为IndexedTriangleArray / IndexedQuadArray时，我会得到一个奇怪的形状。我也尝试过使用GeometryInfo和Stripifier但没有成功。

使用GeometryInfo的代码：

    GeometryInfo geometryInfo = new GeometryInfo(GeometryInfo.QUAD_ARRAY);
    geometryInfo.setCoordinates(points3f);

    NormalGenerator normalGenerator = new NormalGenerator();
    normalGenerator.generateNormals(geometryInfo);

    Stripifier st = new Stripifier();
    st.stripify(geometryInfo);

    Shape3D shape = new Shape3D();
    shape.setAppearance(app);
    shape.setGeometry(geometryInfo.getGeometryArray());

区域解决方案（加上新问题）：

Appearance app = new Appearance();

PolygonAttributes pa = new PolygonAttributes();
pa.setCullFace(PolygonAttributes.CULL_NONE);
pa.setPolygonMode(PolygonAttributes.POLYGON_FILL);
app.setPolygonAttributes(pa);

GeometryInfo geometryInfo = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);

geometryInfo.setCoordinates(points3f);
int[] stripCountArray = { points3f.length };
int[] countourCountArray = {stripCountArray.length};

geometryInfo.setContourCounts( countourCountArray );
geometryInfo.setStripCounts( stripCountArray );

NormalGenerator normalGenerator = new NormalGenerator();
normalGenerator.generateNormals(geometryInfo);

Shape3D shape = new Shape3D();
shape.setAppearance(app);
shape.setGeometry(geometryInfo.getGeometryArray());

形状也有深度。但我不能只是复制数组添加Z-index并再次合并它们（不会工作）。一个可能的解决方案是分别绘制每个面，但我认为这将是非常低效的。

有人可以帮我解决这个问题吗？