CADViewComponent/dist/Viewer.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const THREE = require("three");
const CameraUpdate_1 = require("./CameraUpdate");
const GeUtils_1 = require("./GeUtils");
const PlaneExt_1 = require("./PlaneExt");
const _1 = require(".");
class Viewer {
    //构造
    constructor(canvasContainer) {
        this.m_Camera = new CameraUpdate_1.CameraUpdate();
        this.m_bNeedUpdate = true;
        this.m_Scene = new THREE.Scene();
        this.OnSize = (width, height) => {
            this._Width = width ? width : this.m_DomEl.scrollWidth;
            this._Height = height ? height : this.m_DomEl.scrollHeight;
            //校验.成为2的倍数 避免外轮廓错误.
            if (this._Width % 2 == 1)
                this._Width -= 1;
            if (this._Height % 2 == 1)
                this._Height -= 1;
            this.m_Render.setSize(this._Width, this._Height);
            this.m_Camera.SetSize(this._Width, this._Height);
        };
        this.StartRender = () => {
            requestAnimationFrame(this.StartRender);
            if (this.m_Scene != null && this.m_bNeedUpdate) {
                this.Render();
                this.m_bNeedUpdate = false;
            }
        };
        this.m_DomEl = canvasContainer;
        this.initRender(canvasContainer);
        this.OnSize();
        this.StartRender();
        new _1.CameraControls(this);
        window.addEventListener("resize", () => {
            this.OnSize();
        });
        let oldMesh;
        this.m_Render.domElement.addEventListener("mousemove", (e) => {
            let mesh = _1.PointPick(this, e.offsetX, e.offsetY);
            if (oldMesh)
                oldMesh.material = _1.boardMaterial;
            if (mesh) {
                oldMesh = mesh;
                mesh.material = _1.selectMaterial;
            }
            this.m_bNeedUpdate = true;
        });
    }
    //初始化render
    initRender(canvasContainer) {
        this.m_Render = new THREE.WebGLRenderer({
            antialias: true,
            precision: "highp",
            alpha: true,
        });
        //加到画布
        canvasContainer.appendChild(this.m_Render.domElement);
        this.m_Render.autoClear = true;
        //如果设置，那么它希望所有的纹理和颜色都是预乘的伽玛。默认值为false。
        // this.m_Render.gammaInput = true;
        // this.m_Render.gammaOutput = true;
        // this.m_Render.shadowMap.enabled = true;
        // this.m_Render.toneMapping = THREE.ReinhardToneMapping;
        //设置设备像素比。 这通常用于HiDPI设备，以防止模糊输出画布。
        this.m_Render.setPixelRatio(window.devicePixelRatio);
        this.m_Render.physicallyCorrectLights = true;
        //this.m_Render.toneMappingExposure = Math.pow(1, 5.0); // to allow for very bright scenes.
        //设置它的背景色为黑色
        this.m_Render.setClearColor(0xffffff, 1);
        this.OnSize();
    }
    Render() {
        this.m_Render.render(this.m_Scene, this.m_Camera.Camera);
    }
    ScreenToWorld(pt, planVec) {
        //变换和求交点
        let plan = new PlaneExt_1.PlaneExt(planVec || new THREE.Vector3(0, 0, 1));
        let raycaster = new THREE.Raycaster();
        // 射线从相机射线向屏幕点位置
        raycaster.setFromCamera({
            x: (pt.x / this._Width) * 2 - 1,
            y: -(pt.y / this._Height) * 2 + 1
        }, this.m_Camera.Camera);
        plan.intersectRay(raycaster.ray, pt, true);
    }
    WorldToScreen(pt) {
        let widthHalf = this._Width * 0.5;
        let heightHalf = this._Height * 0.5;
        pt.project(this.m_Camera.Camera);
        pt.x = (pt.x * widthHalf) + widthHalf;
        pt.y = -(pt.y * heightHalf) + heightHalf;
    }
    /**
     * 更新视角观测目标(物体中心)
     *
     * @memberof Viewer
     */
    UpdateLockTarget() {
        let renderList = this.m_Render.renderLists.get(this.m_Scene, this.m_Camera.Camera);
        let box = GeUtils_1.GetBoxArr(renderList.opaque.map(o => o.object));
        if (box)
            this.m_LookTarget = box.getCenter(new THREE.Vector3());
        else
            this.m_LookTarget = GeUtils_1.cZeroVec;
    }
    Rotate(mouseMove) {
        this.m_Camera.Rotate(mouseMove, this.m_LookTarget);
        this.m_bNeedUpdate = true;
    }
    Pan(mouseMove) {
        this.m_Camera.Pan(mouseMove);
        this.m_bNeedUpdate = true;
    }
    Zoom(scale, center) {
        this.m_Camera.Zoom(scale, center);
        this.m_bNeedUpdate = true;
    }
    ZoomAll() {
        this.m_Camera.ZoomExtensBox3(GeUtils_1.GetBox(this.m_Scene, true));
        this.m_bNeedUpdate = true;
    }
    ViewToTop() {
        this.m_Camera.LookAt(new THREE.Vector3(0, 0, -1));
        this.m_bNeedUpdate = true;
    }
    ViewToFront() {
        this.m_Camera.LookAt(new THREE.Vector3(0, 1, 0));
        this.m_bNeedUpdate = true;
    }
    ViewToSwiso() {
        this.m_Camera.LookAt(new THREE.Vector3(1, 1, -1));
        this.m_bNeedUpdate = true;
    }
}
exports.Viewer = Viewer;
//# sourceMappingURL=Viewer.js.map