Question

我做了一个小工具，我可以选择一个物体的面，并获得每个边和角的长度和角度。更新到Three.js Face4的r67时消失了，我无法重新创建之前的内容。 n =（f instanceof THREE.Face3）？ 3：4会这样，所以我可以为Face4增加4个uv。但我现在还没有看到一种方法可以知道什么时候会有Face4，所以我可以添加2 Face3。

下面的代码是一个获取obj的几何的函数。

 function draw(g)
    {
        objectContainer = new THREE.Object3D();

        texture = THREE.ImageUtils.loadTexture('uvmap.png');
        texture.flipY = false;

        materials = [];
        materials.push(new THREE.MeshLambertMaterial({
            map: texture,
            vertexColors: THREE.VertexColors
        }));

        var faceIndices = ['a','b','c','d'];

        var color = new THREE.Color(0xffffff);
        color.setHex(0x333333);

        var uvs = [];
        uvs.push(new THREE.Vector2(0,1));
        uvs.push(new THREE.Vector2(0,0));
        uvs.push(new THREE.Vector2(1,1));
        uvs.push(new THREE.Vector2(1,0));

        for (i = 0; i < g.faces.length; i++)
        {
            face = g.faces[i];
            geo = new THREE.Geometry();
            geo.faces.push(new THREE.Face3(0,1,2));
            geo.faceVertexUvs[0] = [];
            geo.faceVertexUvs[0].push([uvs[0], uvs[1], uvs[3]]);
            geo.faces[0].materialIndex = 0;

            for (j = 0; j < 3; j++)
            {
                fi = face[faceIndices[j]];
                v = g.vertices[fi];
                geo.vertices.push(new THREE.Vector3(v.x,v.y,v.z));
                geo.faces[0].vertexColors[j] = color;
            }

            geo.computeVertexNormals(); 
            geo.computeBoundingBox();

            obj = new THREE.SceneUtils.createMultiMaterialObject(geo, materials);

            objectContainer.add(obj);
        }
        scene.add(objectContainer);
    }

Answer 1

你应该在face3上只设置3个uv值！

    /* create faces and uv's */
        if (n == 3)
        {
            g.faces.push(new THREE.Face3(0,1,2));
            g.faceVertexUvs[0].push([ uvs[0], uvs[1], uvs[2], uvs[3] ]);

        }

不应该设置uvs [3]！

无法仅使用Face3从.obj重新创建Quad

1 个答案: