228 lines
5.0 KiB
JavaScript
228 lines
5.0 KiB
JavaScript
/**
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* Raycaster for GameLib.D3
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* @param graphics GameLib.D3.Graphics
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* @param apiRaycaster
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* @constructor
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*/
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GameLib.D3.Raycaster = function(
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graphics,
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apiRaycaster
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) {
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this.graphics = graphics;
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this.graphics.isNotThreeThrow();
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if (GameLib.Utils.UndefinedOrNull(apiRaycaster)) {
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apiRaycaster = {};
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}
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if (apiRaycaster instanceof GameLib.D3.Raycaster) {
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return apiRaycaster;
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}
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GameLib.D3.API.Raycaster.call(
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this,
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apiRaycaster.id,
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apiRaycaster.name,
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apiRaycaster.position,
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apiRaycaster.direction
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);
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this.position = new GameLib.Vector3(
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this.graphics,
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this.position,
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this
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);
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this.direction = new GameLib.Vector3(
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this.graphics,
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this.direction,
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this
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);
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this.instance = this.createInstance();
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};
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GameLib.D3.Raycaster.prototype = Object.create(GameLib.D3.API.Raycaster.prototype);
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GameLib.D3.Raycaster.prototype.constructor = GameLib.D3.Raycaster;
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/**
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* Creates or updates a raycaster instance
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* @param update
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*/
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GameLib.D3.Raycaster.prototype.createInstance = function(update) {
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var instance = null;
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if (update) {
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instance = this.instance;
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} else {
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instance = new THREE.Raycaster();
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}
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instance.set(
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this.position.instance,
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this.direction.instance
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);
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return instance;
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};
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GameLib.D3.Raycaster.prototype.updateInstance = function() {
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this.instance = this.createInstance(true);
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};
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GameLib.D3.Raycaster.prototype.toApiRaycaster = function() {
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return new GameLib.D3.API.Raycaster(
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this.id,
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this.name,
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this.position.toApiVector(),
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this.direction.toApiVector()
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)
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};
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GameLib.D3.Raycaster.FromObjectRaycaster = function(graphics, parentObject, objectRaycaster) {
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var apiRaycaster = GameLib.D3.API.Raycaster.FromObjectRaycaster(objectRaycaster);
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var raycaster = new GameLib.D3.Raycaster(
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graphics,
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apiRaycaster
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);
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return raycaster;
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};
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/**
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* Sets the direction and position of this raycaster
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* @param position GameLib.Vector3
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* @param direction GameLib.Vector3
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*/
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GameLib.D3.Raycaster.prototype.set = function(
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position,
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direction
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) {
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this.position.x = position.x;
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this.position.y = position.y;
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this.position.z = position.z;
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this.direction.x = direction.x;
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this.direction.y = direction.y;
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this.direction.z = direction.z;
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this.position.updateInstance();
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this.direction.updateInstance();
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};
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/**
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* Sets the direction of this raycaster
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* @param direction GameLib.Vector3
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*/
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GameLib.D3.Raycaster.prototype.setDirection = function(
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direction
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) {
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this.direction.x = direction.x;
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this.direction.y = direction.y;
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this.direction.z = direction.z;
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this.direction.updateInstance();
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};
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/**
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* Sets the position of this raycaster
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* @param position GameLib.Vector3
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*/
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GameLib.D3.Raycaster.prototype.setPosition = function(
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position
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) {
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this.position.x = position.x;
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this.position.y = position.y;
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this.position.z = position.z;
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this.position.updateInstance();
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};
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/**
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* Gets all interesected GameLib.D3.Mesh objects
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* @param meshes [GameLib.D3.Mesh]
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*/
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GameLib.D3.Raycaster.prototype.getIntersectedObjects = function(meshes) {
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var meshInstances = meshes.map(
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function (mesh) {
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return mesh.instance;
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}
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);
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var instanceIdToMesh = meshes.reduce(
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function (result, mesh) {
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result[mesh.instance.id] = mesh;
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},
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{}
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);
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var intersects = this.instance.intersectObjects(meshInstances);
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return intersects.map(function (intersect) {
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return instanceIdToMesh[intersect.object.id];
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});
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};
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/**
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* Returns the face normal (if any) of an intersection between current ray position, direction and a provided mesh
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* @param mesh GameLib.D3.Mesh
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* @returns {null | GameLib.Vector3}
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*/
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GameLib.D3.Raycaster.prototype.getFaceNormal = function(mesh) {
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var normal = null;
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var intersect = this.instance.intersectObject(
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mesh.instance
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);
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if (intersect && intersect.length > 0) {
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normal = new GameLib.Vector3(
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this.graphics,
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new GameLib.API.Vector3(
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intersect[0].face.normal.x,
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intersect[0].face.normal.y,
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intersect[0].face.normal.z
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),
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this
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);
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}
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return normal;
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};
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/**
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* Returns the face normal (if any) of an intersection between current ray position, direction and a provided mesh
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* @param mesh GameLib.D3.Mesh
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* @returns {null | GameLib.Vector3}
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*/
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GameLib.D3.Raycaster.prototype.getIntersectPoint = function(mesh) {
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var point = null;
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var intersect = this.instance.intersectObject(
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mesh.instance
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);
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if (intersect && intersect.length > 0) {
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point = new GameLib.Vector3(
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this.graphics,
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new GameLib.API.Vector3(
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intersect[0].point.x,
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intersect[0].point.y,
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intersect[0].point.z
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),
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this
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);
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}
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return point;
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}; |