449 lines
13 KiB
JavaScript
449 lines
13 KiB
JavaScript
OV.GetDefaultCamera = function (direction)
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{
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if (direction === OV.Direction.X) {
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return new OV.Camera (
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new OV.Coord3D (2.0, -3.0, 1.5),
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new OV.Coord3D (0.0, 0.0, 0.0),
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new OV.Coord3D (1.0, 0.0, 0.0)
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);
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} else if (direction === OV.Direction.Y) {
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return new OV.Camera (
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new OV.Coord3D (-1.5, 2.0, 3.0),
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new OV.Coord3D (0.0, 0.0, 0.0),
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new OV.Coord3D (0.0, 1.0, 0.0)
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);
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} else if (direction === OV.Direction.Z) {
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return new OV.Camera (
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new OV.Coord3D (-1.5, -3.0, 2.0),
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new OV.Coord3D (0.0, 0.0, 0.0),
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new OV.Coord3D (0.0, 0.0, 1.0)
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);
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}
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return null;
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};
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OV.UpVector = class
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{
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constructor ()
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{
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this.direction = OV.Direction.Z;
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this.isFixed = true;
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this.isFlipped = false;
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}
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SetDirection (newDirection, oldCamera)
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{
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this.direction = newDirection;
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this.isFlipped = false;
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let defaultCamera = OV.GetDefaultCamera (this.direction);
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let defaultDir = OV.SubCoord3D (defaultCamera.eye, defaultCamera.center);
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let distance = OV.CoordDistance3D (oldCamera.center, oldCamera.eye);
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let newEye = oldCamera.center.Clone ().Offset (defaultDir, distance);
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let newCamera = oldCamera.Clone ();
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if (this.direction === OV.Direction.X) {
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newCamera.up = new OV.Coord3D (1.0, 0.0, 0.0);
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newCamera.eye = newEye;
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} if (this.direction === OV.Direction.Y) {
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newCamera.up = new OV.Coord3D (0.0, 1.0, 0.0);
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newCamera.eye = newEye;
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} else if (this.direction === OV.Direction.Z) {
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newCamera.up = new OV.Coord3D (0.0, 0.0, 1.0);
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newCamera.eye = newEye;
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}
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return newCamera;
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}
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SetFixed (isFixed, oldCamera)
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{
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this.isFixed = isFixed;
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if (this.isFixed) {
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return this.SetDirection (this.direction, oldCamera);
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}
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return null;
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}
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Flip (oldCamera)
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{
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this.isFlipped = !this.isFlipped;
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let newCamera = oldCamera.Clone ();
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newCamera.up.MultiplyScalar (-1.0);
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return newCamera;
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}
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};
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OV.ViewerGeometry = class
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{
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constructor (scene)
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{
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this.scene = scene;
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this.modelMeshes = [];
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}
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AddModelMeshes (meshes)
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{
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for (let i = 0; i < meshes.length; i++) {
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let mesh = meshes[i];
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this.modelMeshes.push (mesh);
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this.scene.add (mesh);
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}
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}
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GetModelMeshes ()
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{
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return this.modelMeshes;
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}
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ClearModelMeshes ()
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{
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for (let i = 0; i < this.modelMeshes.length; i++) {
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let mesh = this.modelMeshes[i];
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mesh.geometry.dispose ();
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this.scene.remove (mesh);
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}
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this.modelMeshes = [];
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}
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EnumerateModelMeshes (enumerator)
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{
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for (let i = 0; i < this.modelMeshes.length; i++) {
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let mesh = this.modelMeshes[i];
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enumerator (mesh);
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}
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}
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GetModelMeshUnderMouse (mouseCoords, camera, width, height)
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{
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let raycaster = new THREE.Raycaster ();
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let mousePos = new THREE.Vector2 ();
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mousePos.x = (mouseCoords.x / width) * 2 - 1;
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mousePos.y = -(mouseCoords.y / height) * 2 + 1;
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raycaster.setFromCamera (mousePos, camera);
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let iSectObjects = raycaster.intersectObjects (this.modelMeshes);
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for (let i = 0; i < iSectObjects.length; i++) {
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let iSectObject = iSectObjects[i];
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if (iSectObject.object.type === 'Mesh' && iSectObject.object.visible) {
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return iSectObject.object;
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}
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}
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return null;
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}
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};
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OV.Viewer = class
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{
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constructor ()
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{
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this.canvas = null;
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this.renderer = null;
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this.scene = null;
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this.geometry = null;
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this.camera = null;
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this.light = null;
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this.navigation = null;
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this.upVector = null;
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this.settings = {
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animationSteps : 40
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};
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}
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Init (canvas)
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{
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this.canvas = canvas;
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this.canvas.id = 'viewer';
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let parameters = {
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canvas : this.canvas,
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antialias : true,
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precision : 'mediump' // https://github.com/kovacsv/Online3DViewer/issues/69
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};
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this.renderer = new THREE.WebGLRenderer (parameters);
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if (window.devicePixelRatio) {
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this.renderer.setPixelRatio (window.devicePixelRatio);
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}
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this.renderer.setClearColor ('#ffffff', 1.0);
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this.renderer.setSize (this.canvas.width, this.canvas.height);
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this.scene = new THREE.Scene ();
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this.geometry = new OV.ViewerGeometry (this.scene);
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this.InitCamera ();
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this.InitLights ();
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this.Render ();
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}
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SetClickHandler (onClick)
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{
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this.navigation.SetClickHandler (onClick);
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}
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GetCamera ()
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{
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return this.navigation.GetCamera ();
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}
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SetCamera (camera)
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{
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this.navigation.SetCamera (camera);
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this.Render ();
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}
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Resize (width, height)
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{
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let innerSize = OV.GetInnerDimensions (this.canvas, width, height);
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this.ResizeRenderer (innerSize.width, innerSize.height);
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}
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ResizeRenderer (width, height)
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{
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if (window.devicePixelRatio) {
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this.renderer.setPixelRatio (window.devicePixelRatio);
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}
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this.camera.aspect = width / height;
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this.camera.updateProjectionMatrix ();
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this.renderer.setSize (width, height);
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this.Render ();
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}
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FitToWindow (boundingSphere, animation)
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{
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if (boundingSphere === null) {
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return;
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}
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let center = new OV.Coord3D (boundingSphere.center.x, boundingSphere.center.y, boundingSphere.center.z);
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let radius = boundingSphere.radius;
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let fov = this.camera.fov;
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if (animation) {
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let newCamera = this.navigation.GetFitToSphereCamera (center, radius, fov);
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this.navigation.MoveCamera (newCamera, this.settings.animationSteps);
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} else {
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this.navigation.FitToSphere (center, radius, fov);
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}
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}
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AdjustClippingPlanes (boundingSphere)
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{
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if (boundingSphere === null) {
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return;
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}
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if (boundingSphere.radius < 10.0) {
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this.camera.near = 0.01;
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this.camera.far = 100.0;
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} else if (boundingSphere.radius < 100.0) {
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this.camera.near = 0.1;
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this.camera.far = 1000.0;
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} else if (boundingSphere.radius < 1000.0) {
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this.camera.near = 10.0;
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this.camera.far = 10000.0;
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} else {
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this.camera.near = 100.0;
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this.camera.far = 1000000.0;
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}
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this.camera.updateProjectionMatrix ();
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this.Render ();
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}
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IsFixUpVector ()
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{
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return this.navigation.IsFixUpVector ();
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}
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SetFixUpVector (fixUpVector)
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{
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let oldCamera = this.navigation.GetCamera ();
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let newCamera = this.upVector.SetFixed (fixUpVector, oldCamera);
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this.navigation.SetFixUpVector (fixUpVector);
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if (newCamera !== null) {
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this.navigation.MoveCamera (newCamera, this.settings.animationSteps);
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}
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this.Render ();
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}
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SetUpVector (upDirection, animate)
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{
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let oldCamera = this.navigation.GetCamera ();
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let newCamera = this.upVector.SetDirection (upDirection, oldCamera);
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let animationSteps = animate ? this.settings.animationSteps : 0;
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this.navigation.MoveCamera (newCamera, animationSteps);
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this.Render ();
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}
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FlipUpVector ()
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{
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let oldCamera = this.navigation.GetCamera ();
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let newCamera = this.upVector.Flip (oldCamera);
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this.navigation.MoveCamera (newCamera, 0);
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this.Render ();
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}
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Render ()
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{
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let navigationCamera = this.navigation.GetCamera ();
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this.camera.position.set (navigationCamera.eye.x, navigationCamera.eye.y, navigationCamera.eye.z);
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this.camera.up.set (navigationCamera.up.x, navigationCamera.up.y, navigationCamera.up.z);
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this.camera.lookAt (new THREE.Vector3 (navigationCamera.center.x, navigationCamera.center.y, navigationCamera.center.z));
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let lightDir = OV.SubCoord3D (navigationCamera.eye, navigationCamera.center);
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this.light.position.set (lightDir.x, lightDir.y, lightDir.z);
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this.renderer.render (this.scene, this.camera);
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}
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AddMeshes (meshes)
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{
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this.geometry.AddModelMeshes (meshes);
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this.Render ();
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}
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Clear ()
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{
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this.geometry.ClearModelMeshes ();
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this.Render ();
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}
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SetMeshesVisibility (isVisible)
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{
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this.geometry.EnumerateModelMeshes (function (mesh) {
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let visible = isVisible (mesh.userData);
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if (mesh.visible !== visible) {
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mesh.visible = visible;
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}
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});
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this.Render ();
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}
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SetMeshesHighlight (highlightMaterial, isHighlighted)
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{
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function CreateHighlightMaterials (originalMaterials, highlightMaterial)
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{
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let highlightMaterials = [];
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for (let i = 0; i < originalMaterials.length; i++) {
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highlightMaterials.push (highlightMaterial);
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}
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return highlightMaterials;
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}
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this.geometry.EnumerateModelMeshes (function (mesh) {
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let highlighted = isHighlighted (mesh.userData);
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if (highlighted) {
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if (mesh.userData.threeMaterials === null) {
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mesh.userData.threeMaterials = mesh.material;
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mesh.material = CreateHighlightMaterials (mesh.material, highlightMaterial);
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}
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} else {
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if (mesh.userData.threeMaterials !== null) {
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mesh.material = mesh.userData.threeMaterials;
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mesh.userData.threeMaterials = null;
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}
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}
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});
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this.Render ();
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}
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GetMeshUserDataUnderMouse (mouseCoords)
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{
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let width = this.canvas.width;
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let height = this.canvas.height;
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if (window.devicePixelRatio) {
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width /= window.devicePixelRatio;
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height /= window.devicePixelRatio;
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}
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let mesh = this.geometry.GetModelMeshUnderMouse (mouseCoords, this.camera, width, height);
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if (mesh === null) {
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return null;
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}
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return mesh.userData;
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}
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GetBoundingBox (needToProcess)
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{
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let hasMesh = false;
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let boundingBox = new THREE.Box3 ();
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this.geometry.EnumerateModelMeshes (function (mesh) {
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if (needToProcess (mesh.userData)) {
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boundingBox.union (new THREE.Box3 ().setFromObject (mesh));
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hasMesh = true;
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}
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});
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if (!hasMesh) {
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return null;
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}
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return boundingBox;
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}
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GetBoundingSphere (needToProcess)
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{
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let boundingBox = this.GetBoundingBox (needToProcess);
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if (boundingBox === null) {
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return null;
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}
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let boundingSphere = new THREE.Sphere ();
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boundingBox.getBoundingSphere (boundingSphere);
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return boundingSphere;
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}
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EnumerateMeshesUserData (enumerator)
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{
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this.geometry.EnumerateModelMeshes (function (mesh) {
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enumerator (mesh.userData);
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});
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}
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InitCamera ()
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{
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this.camera = new THREE.PerspectiveCamera (45.0, this.canvas.width / this.canvas.height, 0.1, 1000.0);
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this.scene.add (this.camera);
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let canvasElem = this.renderer.domElement;
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let camera = OV.GetDefaultCamera (OV.Direction.Z);
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let obj = this;
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this.navigation = new OV.Navigation (canvasElem, camera);
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this.navigation.SetUpdateHandler (function () {
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obj.Render ();
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});
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this.upVector = new OV.UpVector ();
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}
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InitLights ()
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{
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let ambientLight = new THREE.AmbientLight (0x888888);
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this.scene.add (ambientLight);
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this.light = new THREE.DirectionalLight (0x888888);
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this.scene.add (this.light);
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}
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GetImageSize ()
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{
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let originalSize = new THREE.Vector2 ();
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this.renderer.getSize (originalSize);
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return {
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width : parseInt (originalSize.x, 10),
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height : parseInt (originalSize.y, 10)
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};
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}
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GetImageAsDataUrl (width, height)
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{
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let originalSize = this.GetImageSize ();
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let renderWidth = width;
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let renderHeight = height;
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if (window.devicePixelRatio) {
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renderWidth /= window.devicePixelRatio;
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renderHeight /= window.devicePixelRatio;
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}
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this.ResizeRenderer (renderWidth, renderHeight);
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this.Render ();
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let url = this.renderer.domElement.toDataURL ();
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this.ResizeRenderer (originalSize.width, originalSize.height);
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return url;
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}
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};
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