Creating a unique texture for a custom geometry mesh using Three.js

I'm currently working on constructing a house geometry and applying various textures to the faces of the geometry. The framework I'm using is r55. However, I'm facing an issue where faces with materials generated from textures are not appearing, while those with simple color materials are showing up correctly. When I switch the material created from my roofTexture to a basic color material, the corresponding faces display as expected.

Highlighted below is the relevant section of my code:

var geom = new THREE.Geometry();

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

// Configure the roof texture to repeat
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}));

// Define 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);

Can you identify any errors in my approach?

javascriptthree.jstextures

Answer №1

It appears that the UV coordinates for your geometry are not properly set. Make sure to assign UV coordinates ranging from 0 to 1 when creating your own geometry. For example, you can assign UVs of (0.0, 0.0) to the lower left corner, (1.0, 0.0) to the lower right, (0.0, 1.0) to the top left, and (1.0, 1.0) to the top right. Referencing the PlaneGeometry.js file might help you understand how to correctly assign UVs.

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