import Class from '../core/Class';
import Geometry from './Geometry';
import GeometryData from './GeometryData';
import log from '../utils/log';
const aabbData = [ // eslint-disable-line no-unused-vars
[0, 0, 0],
[0, 0, 0]
];
/**
* 长方体几何体
* @class
* @extends Geometry
*/
const BoxGeometry = Class.create(/** @lends BoxGeometry.prototype */ {
Extends: Geometry,
/**
* @default true
* @type {boolean}
*/
isBoxGeometry: true,
/**
* @default BoxGeometry
* @type {string}
*/
className: 'BoxGeometry',
/**
* box的宽度
* @default 1
* @type {number}
*/
width: 1,
/**
* box的高度
* @default 1
* @type {number}
*/
height: 1,
/**
* box的深度
* @default 1
* @type {number}
*/
depth: 1,
/**
* 水平分割面的数量
* @default 1
* @type {number}
*/
widthSegments: 1,
/**
* 垂直分割面的数量
* @default 1
* @type {number}
*/
heightSegments: 1,
/**
* 深度分割面的数量
* @default 1
* @type {number}
*/
depthSegments: 1,
/**
* @constructs
* @param {Object} [params] 创建对象的属性参数。可包含此类的所有属性。
* @param {number} [params.width=1] box的宽度
* @param {number} [params.height=1] box的高度
* @param {number} [params.depth=1] box的深度
* @param {number} [params.widthSegments=1] 水平分割面的数量
* @param {number} [params.heightSegments=1] 垂直分割面的数量
* @param {number} [params.depthSegments=1] 深度分割面的数量
* @param {any} [params.[value:string]] 其它属性
*/
constructor(params) {
BoxGeometry.superclass.constructor.call(this, params);
if (this.isSegments()) {
this.buildWithSegments();
} else {
this.build();
}
},
buildWithSegments() {
const {
width,
height,
depth,
widthSegments,
heightSegments,
depthSegments
} = this;
const xVertexCount = (heightSegments + 1) * (depthSegments + 1);
const yVertexCount = (widthSegments + 1) * (depthSegments + 1);
const zVertexCount = (widthSegments + 1) * (heightSegments + 1);
const xIndexCount = heightSegments * depthSegments * 6;
const yIndexCount = widthSegments * depthSegments * 6;
const zIndexCount = widthSegments * heightSegments * 6;
const verticesCount = (xVertexCount + yVertexCount + zVertexCount) * 2;
const vertices = new Float32Array(verticesCount * 3);
const normals = new Float32Array(verticesCount * 3);
const uvs = new Float32Array(verticesCount * 2);
const indices = new Uint16Array((xIndexCount + yIndexCount + zIndexCount) * 2);
this.vertices = new GeometryData(vertices, 3);
this.normals = new GeometryData(normals, 3);
this.uvs = new GeometryData(uvs, 2);
this.indices = new GeometryData(indices, 1);
let idxInfo = [0, 0];
// x right
this.buildPlane(idxInfo, 2, 1, 0, -1, 1, depth, height, width / 2, depthSegments, heightSegments);
// -x left
this.buildPlane(idxInfo, 2, 1, 0, 1, 1, depth, height, -width / 2, depthSegments, heightSegments);
// y top
this.buildPlane(idxInfo, 0, 2, 1, 1, -1, width, depth, height / 2, widthSegments, depthSegments);
// -y bottom
this.buildPlane(idxInfo, 0, 2, 1, 1, 1, width, depth, -height / 2, widthSegments, depthSegments);
// z front
this.buildPlane(idxInfo, 0, 1, 2, 1, 1, width, height, depth / 2, widthSegments, heightSegments);
// -z back
this.buildPlane(idxInfo, 0, 1, 2, -1, 1, width, height, -depth / 2, widthSegments, heightSegments);
},
buildPlane(idxInfo, u, v, w, uDir, vDir, uLength, vLength, wValue, uSegments, vSegments) {
const uDiff = uLength / uSegments;
const vDiff = vLength / vSegments;
const uHalf = uLength / 2;
const vHalf = vLength / 2;
let idx = idxInfo[0];
let currentIndicesIdx = idxInfo[1];
const vertices = this.vertices.data;
const normals = this.normals.data;
const uvs = this.uvs.data;
const indices = this.indices.data;
for (let vi = 0; vi <= vSegments; vi++) {
let vValue = (vi * vDiff - vHalf) * vDir;
for (let ui = 0; ui <= uSegments; ui++) {
vertices[idx * 3 + u] = (ui * uDiff - uHalf) * uDir;
vertices[idx * 3 + v] = vValue;
vertices[idx * 3 + w] = wValue;
normals[idx * 3 + u] = 0;
normals[idx * 3 + v] = 0;
normals[idx * 3 + w] = wValue < 0 ? -1 : 1;
uvs[idx * 2] = ui / uSegments;
uvs[idx * 2 + 1] = 1 - vi / vSegments;
if (ui < uSegments && vi < vSegments) {
let lb = idxInfo[0] + (vi + 1) * (uSegments + 1) + ui;
indices[currentIndicesIdx++] = lb;
indices[currentIndicesIdx++] = idx;
indices[currentIndicesIdx++] = lb + 1;
indices[currentIndicesIdx++] = lb + 1;
indices[currentIndicesIdx++] = idx;
indices[currentIndicesIdx++] = idx + 1;
}
idx++;
}
}
idxInfo[0] = idx;
idxInfo[1] = currentIndicesIdx;
},
build() {
const vertices = new Float32Array(72);
const indices = new Uint16Array(36);
this.vertices = new GeometryData(vertices, 3);
this.indices = new GeometryData(indices, 1);
const halfWidth = this.width / 2;
const halfHeight = this.height / 2;
const halfDepth = this.depth / 2;
const p1 = [-halfWidth, -halfHeight, -halfDepth];
const p2 = [halfWidth, -halfHeight, -halfDepth];
const p3 = [halfWidth, halfHeight, -halfDepth];
const p4 = [-halfWidth, halfHeight, -halfDepth];
const p5 = [-halfWidth, -halfHeight, halfDepth];
const p6 = [halfWidth, -halfHeight, halfDepth];
const p7 = [halfWidth, halfHeight, halfDepth];
const p8 = [-halfWidth, halfHeight, halfDepth];
this.addRect(p6, p2, p3, p7); // right
this.addRect(p1, p5, p8, p4); // left
this.addRect(p8, p7, p3, p4); // top
this.addRect(p1, p2, p6, p5); // bottom
this.addRect(p5, p6, p7, p8); // front
this.addRect(p2, p1, p4, p3); // back
},
isSegments() {
return this.widthSegments > 1 || this.heightSegments > 1 || this.depthSegments > 1;
},
/**
* 设置朝前面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][]} uv uv数据，如 [[0, 1], [1, 1], [1, 0], [0, 0]]
*/
setFrontUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setFrontUV!');
return;
}
this.setVertexUV(32, uv);
},
/**
* 设置右侧面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][]} uv uv数据，如 [[0, 1], [1, 1], [1, 0], [0, 0]]
*/
setRightUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setRightUV!');
return;
}
this.setVertexUV(0, uv);
},
/**
* 设置朝后面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][]} uv uv数据，如 [[0, 1], [1, 1], [1, 0], [0, 0]]
*/
setBackUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setBackUV!');
return;
}
this.setVertexUV(40, uv);
},
/**
* 设置左侧面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][]} uv uv数据，如 [[0, 1], [1, 1], [1, 0], [0, 0]]
*/
setLeftUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setLeftUV!');
return;
}
this.setVertexUV(8, uv);
},
/**
* 设置顶部面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][]} uv uv数据，如 [[0, 1], [1, 1], [1, 0], [0, 0]]
*/
setTopUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setTopUV!');
return;
}
this.setVertexUV(16, uv);
},
/**
* 设置底部面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][]} uv uv数据，如 [[0, 1], [1, 1], [1, 0], [0, 0]]
*/
setBottomUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setBottomUV!');
return;
}
this.setVertexUV(24, uv);
},
/**
* 设置所有面的uv，不支持设置带有 widthSegments heightSegments depthSegments 的实例
* @param {number[][][]} uv uv数据，如
* [<br>
* [[0, 1], [1, 1], [1, 0], [0, 0]],<br>
* [[0, 1], [1, 1], [1, 0], [0, 0]],<br>
* [[0, 1], [1, 1], [1, 0], [0, 0]],<br>
* [[0, 1], [1, 1], [1, 0], [0, 0]],<br>
* [[0, 1], [1, 1], [1, 0], [0, 0]],<br>
* [[0, 1], [1, 1], [1, 0], [0, 0]]<br>
* ]
*/
setAllRectUV(uv) {
if (this.isSegments()) {
log.warn('segmented BoxGeometry dont support setAllRectUV!');
return null;
}
for (let i = 0; i < 6; i++) {
this.setVertexUV(i * 8, uv);
}
return this;
},
_raycast(ray, side) {
// TODO:optimize
return BoxGeometry.superclass._raycast.call(this, ray, side);
}
});
export default BoxGeometry;