Question

我正在尝试创建一个房屋几何图形并将不同的纹理附加到几何图形的面上。我正在使用r55。问题是没有出现从纹理创建的材质的面。然而，出现了具有简单颜色材料的面。如果我用简单的颜色材料替换我的roofTexture生成的材质，那么使用该材质的面也会正确显示。

以下是我的代码的相关部分：

var geom = new THREE.Geometry();

// Load the roof texture
var roofTexture = new THREE.ImageUtils.loadTexture('gfx/textures/roof.jpg');

// Let the roof texture repeat itself
roofTexture.wrapS = roofTexture.wrapT = THREE.RepeatWrapping;
roofTexture.repeat.set(10, 10);

// Materials
var materialArray = [];
materialArray.push(new THREE.MeshLambertMaterial({color: 0xD3E3F0 }));
materialArray.push(new THREE.MeshLambertMaterial({map: roofTexture}));

// Base edges
var edge0 = new THREE.Vector2(obj.ridgeLength/2, -obj.buildingDepth/2);
var edge1 = new THREE.Vector2(obj.ridgeLength/2, obj.buildingDepth/2);
var edge2 = new THREE.Vector2(-obj.ridgeLength/2, obj.buildingDepth/2);
var edge3 = new THREE.Vector2(-obj.ridgeLength/2, -obj.buildingDepth/2);

// Floor
geom.vertices.push(new THREE.Vector3(edge0.x, -1, edge0.y));
geom.vertices.push(new THREE.Vector3(edge1.x, -1, edge1.y));
geom.vertices.push(new THREE.Vector3(edge2.x, -1, edge2.y));
geom.vertices.push(new THREE.Vector3(edge3.x, -1, edge3.y));

// Eave
geom.vertices.push(new THREE.Vector3(edge0.x, obj.eaveHeight, edge0.y));
geom.vertices.push(new THREE.Vector3(edge1.x, obj.eaveHeight, edge1.y));
geom.vertices.push(new THREE.Vector3(edge2.x, obj.eaveHeight, edge2.y));
geom.vertices.push(new THREE.Vector3(edge3.x, obj.eaveHeight, edge3.y));

// Ridge
geom.vertices.push(new THREE.Vector3(obj.ridgeLength/2, obj.ridgeHeight, 0));
geom.vertices.push(new THREE.Vector3(-obj.ridgeLength/2, obj.ridgeHeight, 0));


// Ground
geom.faces.push( new THREE.Face4(0, 0, 0, 0) );

// Front
geom.faces.push( new THREE.Face4(0, 3, 7, 4) );

// Left side
geom.faces.push( new THREE.Face4(0, 4, 5, 1) );

// Back
geom.faces.push( new THREE.Face4(1, 5, 6, 2) );

// Right side
geom.faces.push( new THREE.Face4(2, 6, 7, 3) );

// Left triangle
geom.faces.push( new THREE.Face3(4, 8, 5));

// Right triangle
geom.faces.push( new THREE.Face3(6, 9, 7));

// Front roof
geom.faces.push( new THREE.Face4(7, 9, 8, 4) );

// Back roof
geom.faces.push( new THREE.Face4(5, 8, 9, 6) );

// Assign materials to the faces
geom.faces[0].materialIndex = 0;
geom.faces[1].materialIndex = 0;
geom.faces[2].materialIndex = 0;
geom.faces[3].materialIndex = 0;
geom.faces[4].materialIndex = 0;
geom.faces[5].materialIndex = 0;
geom.faces[6].materialIndex = 0;
geom.faces[7].materialIndex = 1;
geom.faces[8].materialIndex = 1;

geom.computeFaceNormals();

obj.house = new THREE.Mesh( geom, new THREE.MeshFaceMaterial(materialArray) );
obj.house.doubleSided = true;
obj.house.castShadow = true;
obj.sun.shadowDarkness = 1.0;
obj.scene.add(obj.house);

我做错了什么？

Answer 1

您缺少几何体上的UV坐标。 UV坐标从0到1，因此您自己创建几何图形，您可以在左下角分配右下角（1.0,0.0），左上角（0.0,1.0）和右上角的UVs（0.0,0.0）（ 1.0,1.0）。您可以查看PlaneGeometry.js文件以查看如何分配UV。

具有自定义几何的网格的Three.js纹理

1 个答案: