最近有three网友，问我要不要学习blender，其实我感觉学习一下也无妨，不过花大量时间精通，尚可不必，术业有专攻给别人留一条路吧，哈哈。那我我们就是用ThreeBSP和uv贴图的知识来制作一个定制化的快递柜，先上图，在线案例请点击博客原文。博客原文下面我们来讲解一下这样一个柜子的制作。1. 主角是一个JSON这样一个快递柜的核心是JSON数据的创建，有了jSON数据，我们就可以通过循环遍历出柜子，柜门和uv映射关系。那面下面来看看我们的JSON数据（部分代码）。
var doorArray = [

[94, 10, -176, 196, false], [94, 10, -76, 196, false], [94, 10, 76, 196, false], [94, 10, 176, 196, false], [46, 15, 0, 186, false], [46, 60, 0, 147, false],

[46, 21, 0, 105.5, true], [46, 10, 0, 89, true], [46, 10, 0, 78, true], [46, 20, 0, 62, true], [46, 20, 0, 41, true], [46, 20, 0, 20, true]
]
var doorArray = [

[94, 10, -176, 196, false], [94, 10, -76, 196, false], [94, 10, 76, 196, false], [94, 10, 176, 196, false], [46, 15, 0, 186, false], [46, 60, 0, 147, false],

[46, 21, 0, 105.5, true], [46, 10, 0, 89, true], [46, 10, 0, 78, true], [46, 20, 0, 62, true], [46, 20, 0, 41, true], [46, 20, 0, 20, true]
]他是以一个数组的形式表现的，每一个数组代表一个柜子数据，每一个数组中的第一项为当前柜子宽度，第二项为高度，第三项为中心x位置，第四项而中心y位置，第五项为柜子是否能打开（因为有的地方为操作面板等）。2. ThreeBSP绘制柜子的整体架构。说完核心，我们在看看柜子的整体框架。下面是柜子的侧面图，通过侧面图我们可以很清晰的看出我们做了什么其实加的不多，就是在上面加了一个檐，下面加了两个底座，还有就是在每个小快递柜中掏出一个洞。
我们看代码
var texture = new THREE.TextureLoader().load('/static/images/base/cabinet.jpg')
let pubMate = new THREE.MeshNormalMaterial();
let frameGeom = new THREE.BoxGeometry(450, 200, 50);
let frameMesh = new THREE.Mesh(frameGeom, pubMate);
frameMesh.position.y = 106;

let footShape = new THREE.Shape();
footShape.moveTo(0, 2);
footShape.lineTo(8, -2);
footShape.lineTo(8, -4);
footShape.lineTo(0, -4);
footShape.lineTo(0, 0);
footShape.lineTo(-12, 0);
footShape.lineTo(-12, 2);
footShape.lineTo(0, 2);

let footExtrudeSettings = {

steps: 5,

depth: 450,

bevelEnabled: false
};
let footGeom = new THREE.ExtrudeGeometry(footShape, footExtrudeSettings);
let footMesh = new THREE.Mesh(footGeom, pubMate);
let footMesh1 = footMesh.clone();
footMesh1.rotation.y = -Math.PI / 2;
footMesh1.position.x = 225;
footMesh1.position.y = 4;
footMesh1.position.z = 25;
let footMesh2 = footMesh.clone();
footMesh2.rotation.y = Math.PI / 2;
footMesh2.position.x = -225;
footMesh2.position.y = 4;
footMesh2.position.z = -25;

let headGeom = new THREE.BoxGeometry(450, 5, 20);
let headMesh = new THREE.Mesh(headGeom, pubMate);
headMesh.position.z = 23;
headMesh.position.y = 206 - 2.5;

let framebsp = new ThreeBSP(frameMesh);
let foot1bsp = new ThreeBSP(footMesh1);
let foot2bsp = new ThreeBSP(footMesh2);
let headbsp = new ThreeBSP(headMesh);

res = framebsp.union(foot1bsp).union(foot2bsp).union(headbsp);

for(var i=0; i
let geom = new THREE.BoxGeometry(doorArray[i][0]-1, doorArray[i][1]-1, 50);

let mesh = new THREE.Mesh(geom, pubMate);

mesh.position.set(doorArray[i][2], doorArray[i][3], 4)

let meshbsp = new ThreeBSP(mesh);

res = res.subtract(meshbsp);
}

let cabinetGeom = res.toGeometry();
let cabinetMate = new THREE.MeshPhongMaterial({color: 0xD8C513, specular: 0xD8C513, shininess: 10});
let cabinetMesh = new THREE.Mesh(cabinetGeom, cabinetMate);
cabinetMesh.position.y = 106;

scene.add(cabinetMesh);
var texture = new THREE.TextureLoader().load('/static/images/base/cabinet.jpg')
let pubMate = new THREE.MeshNormalMaterial();
let frameGeom = new THREE.BoxGeometry(450, 200, 50);
let frameMesh = new THREE.Mesh(frameGeom, pubMate);
frameMesh.position.y = 106;

let footShape = new THREE.Shape();
footShape.moveTo(0, 2);
footShape.lineTo(8, -2);
footShape.lineTo(8, -4);
footShape.lineTo(0, -4);
footShape.lineTo(0, 0);
footShape.lineTo(-12, 0);
footShape.lineTo(-12, 2);
footShape.lineTo(0, 2);

let footExtrudeSettings = {

steps: 5,

depth: 450,

bevelEnabled: false
};
let footGeom = new THREE.ExtrudeGeometry(footShape, footExtrudeSettings);
let footMesh = new THREE.Mesh(footGeom, pubMate);
let footMesh1 = footMesh.clone();
footMesh1.rotation.y = -Math.PI / 2;
footMesh1.position.x = 225;
footMesh1.position.y = 4;
footMesh1.position.z = 25;
let footMesh2 = footMesh.clone();
footMesh2.rotation.y = Math.PI / 2;
footMesh2.position.x = -225;
footMesh2.position.y = 4;
footMesh2.position.z = -25;

let headGeom = new THREE.BoxGeometry(450, 5, 20);
let headMesh = new THREE.Mesh(headGeom, pubMate);
headMesh.position.z = 23;
headMesh.position.y = 206 - 2.5;

let framebsp = new ThreeBSP(frameMesh);
let foot1bsp = new ThreeBSP(footMesh1);
let foot2bsp = new ThreeBSP(footMesh2);
let headbsp = new ThreeBSP(headMesh);

res = framebsp.union(foot1bsp).union(foot2bsp).union(headbsp);

for(var i=0; i
let geom = new THREE.BoxGeometry(doorArray[i][0]-1, doorArray[i][1]-1, 50);

let mesh = new THREE.Mesh(geom, pubMate);

mesh.position.set(doorArray[i][2], doorArray[i][3], 4)

let meshbsp = new ThreeBSP(mesh);

res = res.subtract(meshbsp);
}

let cabinetGeom = res.toGeometry();
let cabinetMate = new THREE.MeshPhongMaterial({color: 0xD8C513, specular: 0xD8C513, shininess: 10});
let cabinetMesh = new THREE.Mesh(cabinetGeom, cabinetMate);
cabinetMesh.position.y = 106;

scene.add(cabinetMesh);这里就是在框架BoxGeometry的基础上加了两个底座ExtrudeGeometry，和一个檐BoxGeometry，然后遍历减去小柜子。掌握好各自的空间位置，制作其实并不难。3. 柜子的统一贴图将一张图作为贴图，贴到所有的mesh上，如最上面图的效果，因为上节课已经大致的说了关于uv的一点知识。
for(var i=0; i
let a0 = doorArray[i][0];

let a1 = doorArray[i][1];

let a2 = doorArray[i][2];

let a3 = doorArray[i][3];


let x1 = ((a2 - a0 / 2) + 223) / 446;

let x2 = ((a2 + a0 / 2) + 223) / 446;

let y1 = ((a3 - a1 / 2) - 10) / 191;

let y2 = ((a3 + a1 / 2) - 10) / 191;


doorMesh.geometry.faceVertexUvs[0][8] = [new THREE.Vector2(x1, y2), new THREE.Vector2(x1, y1), new THREE.Vector2(x2, y2)];

doorMesh.geometry.faceVertexUvs[0][9] = [new THREE.Vector2(x1, y1), new THREE.Vector2(x2, y1), new THREE.Vector2(x2, y2)];
}
for(var i=0; i
let a0 = doorArray[i][0];

let a1 = doorArray[i][1];

let a2 = doorArray[i][2];

let a3 = doorArray[i][3];


let x1 = ((a2 - a0 / 2) + 223) / 446;

let x2 = ((a2 + a0 / 2) + 223) / 446;

let y1 = ((a3 - a1 / 2) - 10) / 191;

let y2 = ((a3 + a1 / 2) - 10) / 191;


doorMesh.geometry.faceVertexUvs[0][8] = [new THREE.Vector2(x1, y2), new THREE.Vector2(x1, y1), new THREE.Vector2(x2, y2)];

doorMesh.geometry.faceVertexUvs[0][9] = [new THREE.Vector2(x1, y1), new THREE.Vector2(x2, y1), new THREE.Vector2(x2, y2)];
}上面已经说过，这里的a0是柜子的宽，a1是柜子的高，a2是柜子中心x的坐标值，a3是柜子中心y的坐标值。因为柜子整体x的范围是[-223, 223]，y的范围的[10, 201]。经过换算x1是纹理x坐标的最小值，x2是纹理x坐标的最大值，y1是纹理y坐标的最小值，y2是纹理y坐标的最大值，最后设置数组索引为8和9小三角面的uv映射（因为我们要设置的面为长方体的左面，就是8和9控制的面）。最后加上一点点开柜子的动画就大功告成了。转载请注明地址：郭先生的博客郭先生的博客