refactore mesh events (wip) #34

src/core/Object3D.js

@@ -1,38 +1,20 @@
-import { Vector2 } from 'three';
 import { watch } from 'vue';
 import { bindProp } from '../tools/index.js';
 
 export default {
   name: 'Object3D',
   inject: ['three', 'scene', 'rendererComponent'],
-  emits: ['created', 'ready', 'pointerEnter', 'pointerOver', 'pointerLeave', 'click'],
+  emits: ['created', 'ready'],
   props: {
     position: { type: Object, default: { x: 0, y: 0, z: 0 } },
     rotation: { type: Object, default: { x: 0, y: 0, z: 0 } },
     scale: { type: Object, default: { x: 1, y: 1, z: 1 } },
     lookAt: { type: Object, default: null },
-    onPointerEnter: { type: Function, default: null },
-    onPointerOver: { type: Function, default: null },
-    onPointerLeave: { type: Function, default: null },
-    onClick: { type: Function, default: null },
-    usePointerEvents: { type: Boolean, default: false },
-    pointerObjects: { type: [Boolean, Array], default: null }
-  },
-  data() {
-    return {
-      pointerOver: null
-    }
   },
   // can't use setup because it will not be used in sub components
   // setup() {},
   unmounted() {
     if (this._parent) this._parent.remove(this.o3d);
-
-    // teardown listeners
-    this.three.offBeforeRender(this.pointerHandler);
-    if (this.three.mouse_move_element) {
-      this.three.mouse_move_element.removeEventListener('mouseleave', this.renderElementLeaveHandler)
-    }
   },
   methods: {
     initObject3D(o3d) {
@@ -47,23 +29,6 @@ export default {
       if (this.lookAt) this.o3d.lookAt(this.lookAt.x, this.lookAt.y, this.lookAt.z);
       watch(() => this.lookAt, (v) => { this.o3d.lookAt(v.x, v.y, v.z); }, { deep: true });
 
-      if (this.usePointerEvents
-        || this.onPointerEnter
-        || this.onPointerOver
-        || this.onPointerLeave
-        || this.onClick) {
-        this.three.onBeforeRender(this.pointerHandler);
-      }
-      if (this.onPointerLeave) {
-        // we need to wait a tick so the mouse_move_element is created
-        // TODO: more robust fix
-        this.$nextTick(() => this.three.mouse_move_element.addEventListener('mouseleave', this.renderElementLeaveHandler));
-      }
-      if (this.onClick) {
-        window.addEventListener('click', this.clickHandler);
-        // TODO: touch
-      }
-
       // find first viable parent
       let parent = this.$parent;
       while (parent) {
@@ -79,103 +44,6 @@ export default {
     },
     add(o) { this.o3d.add(o); },
     remove(o) { this.o3d.remove(o); },
-    pointerHandler() {
-      this.three.raycaster.setFromCamera(this.three.mouse, this.three.camera);
-
-      // determine what we're raycasting against 
-      let objectsToCastAgainst = this.pointerObjects;
-      if (objectsToCastAgainst) {
-        // cast against all objects in scene if prop is `true`
-        if (objectsToCastAgainst === true) {
-          objectsToCastAgainst = this.three.scene.children;
-        }
-      } else {
-        // default: just cast against this object
-        objectsToCastAgainst = [this.o3d];
-      }
-
-      // find all intersects
-      const intersects = this.three.raycaster.intersectObjects(objectsToCastAgainst);
-      // determine if the first intersect is this object
-      const match = intersects.length &&
-        intersects[0].object.uuid === this.o3d.uuid
-        ? intersects[0]
-        : null;
-
-      // if so, let's start the callback process
-      if (match) {
-        // pointer is newly over o3d
-        if (!this.pointerOver) {
-          this.pointerOver = true;
-
-          if (this.onPointerEnter) {
-
-            this.onPointerEnter({
-              object: this.o3d,
-              intersect: match
-            });
-
-            if (this.usePointerEvents) {
-              this.$emit('pointerEnter', {
-                object: this.o3d,
-                intersect: match
-              });
-            }
-          }
-        }
-        // pointer is still over o3d
-        else if (this.onPointerOver) {
-          this.onPointerOver({
-            object: this.o3d,
-            intersect: match
-          });
-
-          if (this.usePointerEvents) {
-            this.$emit('pointerOver', {
-              object: this.o3d,
-              intersect: match
-            });
-          }
-        }
-      } else {
-        // pointer is not over o3d
-
-        // pointer has just left o3d
-        if (this.pointerOver) {
-          this.pointerOver = false;
-          if (this.onPointerLeave) {
-            this.onPointerLeave({ object: this.o3d });
-          }
-
-          if (this.usePointerEvents) {
-            this.$emit('pointerLeave', {
-              object: this.o3d
-            });
-          }
-        }
-      }
-    },
-    clickHandler(evt) {
-      if (this.pointerOver) {
-        // cast a ray so we can provide hit info
-        this.three.raycaster.setFromCamera(this.three.mouse, this.three.camera);
-        const [intersect] = this.three.raycaster.intersectObjects([this.o3d]);
-
-        // callbacks and events
-        if (this.onClick) {
-          this.onClick({ object: this.o3d, intersect });
-        }
-        if (this.usePointerEvents) {
-          this.$emit('click', { object: this.o3d, intersect });
-        }
-      }
-    },
-    renderElementLeaveHandler() {
-      // since the mouse is off the renderer, we'll set its values to an unreachable number
-      this.three.mouse.x = this.three.mouse.y = Infinity;
-      // then run the normal pointer handler with these updated mouse values
-      this.pointerHandler();
-    }
   },
   render() {
     return this.$slots.default ? this.$slots.default() : [];

src/core/Renderer.js

@@ -7,11 +7,7 @@ export default {
     antialias: Boolean,
     alpha: Boolean,
     autoClear: { type: Boolean, default: true },
-    // mouseMove: { type: [Boolean, String], default: false },
-    // mouseRaycast: { type: Boolean, default: false },
-    // mouseOver: { type: Boolean, default: false },
-    usePointer: { type: Boolean, default: true },
-    // click: { type: Boolean, default: false },
+    usePointer: { type: Boolean, default: false },
     orbitCtrl: { type: [Boolean, Object], default: false },
     resize: { type: [Boolean, String], default: false },
     shadow: Boolean,
@@ -39,11 +35,7 @@ export default {
       alpha: this.alpha,
       autoClear: this.autoClear,
       orbit_ctrl: this.orbitCtrl,
-      // mouse_move: this.mouseMove,
-      // mouse_raycast: this.mouseRaycast,
-      // mouse_over: this.mouseOver,
       use_pointer: this.usePointer,
-      // click: this.click,
       resize: this.resize,
       width: this.width,
       height: this.height,

src/core/usePointer.js

@@ -0,0 +1,139 @@
+import { Vector2, Vector3 } from 'three';
+import useRaycaster from './useRaycaster';
+
+export default function usePointer(options) {
+  const {
+    camera,
+    domElement,
+    intersectObjects,
+    touch = true,
+    resetOnEnd = false,
+    resetPosition = new Vector2(),
+    resetPositionV3 = new Vector3(),
+    // onEnter = () => {},
+    // onLeave = () => {},
+    // onMove = () => {},
+    // onDown = () => {},
+    // onUp = () => {},
+    // onClick = () => {},
+  } = options;
+
+  const position = resetPosition.clone();
+  const positionN = new Vector2();
+
+  const raycaster = useRaycaster({ camera });
+  const positionV3 = raycaster.position;
+
+  const obj = {
+    position,
+    positionN,
+    positionV3,
+    listeners: false,
+    addListeners,
+    removeListeners,
+  };
+
+  return obj;
+
+  function reset() {
+    position.copy(resetPosition);
+    positionV3.copy(resetPositionV3);
+  };
+
+  function updatePosition(event) {
+    let x, y;
+    if (event.touches && event.touches.length > 0) {
+      x = event.touches[0].clientX;
+      y = event.touches[0].clientY;
+    } else {
+      x = event.clientX;
+      y = event.clientY;
+    }
+
+    const rect = domElement.getBoundingClientRect();
+    position.x = x - rect.left;
+    position.y = y - rect.top;
+    positionN.x = (position.x / rect.width) * 2 - 1;
+    positionN.y = (position.y / rect.height) * 2 - 1;
+    raycaster.updatePosition(positionN);
+  };
+
+  function pointerEnter(event) {
+    updatePosition(event);
+    // onEnter();
+  };
+
+  function pointerChange() {
+    if (intersectObjects.length) {
+      const intersects = raycaster.intersect(positionN, intersectObjects);
+      const offObjects = [...intersectObjects];
+
+      intersects.forEach(intersect => {
+        const { object } = intersect;
+        const { component } = object;
+        if (!object.over) {
+          object.over = true;
+          if (component.onPointerOver) component.onPointerOver({ over: true, component, intersect });
+          if (component.onPointerEnter) component.onPointerEnter({ component, intersect });
+        }
+        offObjects.splice(offObjects.indexOf(object), 1);
+      });
+
+      offObjects.forEach(object => {
+        const { component } = object;
+        if (object.over && component.onPointerOver) {
+          object.over = false;
+          if (component.onPointerOver) component.onPointerOver({ over: false, component });
+          if (component.onPointerLeave) component.onPointerLeave({ component });
+        }
+      });
+    }
+  };
+
+  function pointerMove(event) {
+    updatePosition(event);
+    pointerChange();
+    // onMove();
+  };
+
+  function pointerClick(event) {
+    updatePosition(event);
+    if (intersectObjects.length) {
+      const intersects = raycaster.intersect(positionN, intersectObjects);
+      intersects.forEach(intersect => {
+        const { object } = intersect;
+        const { component } = object;
+        if (component.onClick) component.onClick({ component, intersect });
+      });
+    }
+  };
+
+  function pointerLeave(event) {
+    if (resetOnEnd) reset();
+    // onLeave();
+  };
+
+  function addListeners() {
+    domElement.addEventListener('mouseenter', pointerEnter);
+    domElement.addEventListener('mousemove', pointerMove);
+    domElement.addEventListener('mouseleave', pointerLeave);
+    domElement.addEventListener('click', pointerClick);
+    if (touch) {
+      domElement.addEventListener('touchstart', pointerEnter);
+      domElement.addEventListener('touchmove', pointerMove);
+      domElement.addEventListener('touchend', pointerLeave);
+    }
+    obj.listeners = true;
+  };
+
+  function removeListeners() {
+    domElement.removeEventListener('mouseenter', pointerEnter);
+    domElement.removeEventListener('mousemove', pointerMove);
+    domElement.removeEventListener('mouseleave', pointerLeave);
+
+    domElement.removeEventListener('touchstart', pointerEnter);
+    domElement.removeEventListener('touchmove', pointerMove);
+    domElement.removeEventListener('touchend', pointerLeave);
+    obj.listeners = false;
+  };
+};

src/core/useRaycaster.js

@@ -0,0 +1,29 @@
+import { Plane, Raycaster, Vector3 } from 'three';
+
+export default function useRaycaster(options) {
+  const {
+    camera,
+    resetPosition = new Vector3(0, 0, 0),
+  } = options;
+
+  const raycaster = new Raycaster();
+  const position = resetPosition.clone();
+  const plane = new Plane(new Vector3(0, 0, 1), 0);
+
+  const updatePosition = (coords) => {
+    raycaster.setFromCamera(coords, camera);
+    camera.getWorldDirection(plane.normal);
+    raycaster.ray.intersectPlane(plane, position);
+  };
+
+  const intersect = (coords, objects) => {
+    raycaster.setFromCamera(coords, camera);
+    return raycaster.intersectObjects(objects);
+  };
+
+  return {
+    position,
+    updatePosition,
+    intersect,
+  };
+};

src/core/useThree.js

@@ -1,13 +1,11 @@
 import {
-  Plane,
-  Raycaster,
-  Vector2,
-  Vector3,
   WebGLRenderer,
 } from 'three';
 
 import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
 
+import usePointer from './usePointer';
+
 /**
  * Three.js helper
  */
@@ -19,14 +17,10 @@ export default function useThree() {
     alpha: false,
     autoClear: true,
     orbit_ctrl: false,
-    // mouse_move: false,
-    // mouse_raycast: false,
-    // mouse_over: false,
-    use_pointer: true,
-    // click: false,
-    resize: true,
-    width: 0,
-    height: 0,
+    use_pointer: false,
+    resize: false,
+    width: 300,
+    height: 150,
   };
 
   // size
@@ -41,26 +35,16 @@ export default function useThree() {
   let afterResizeCallbacks = [];
   let beforeRenderCallbacks = [];
 
-  // mouse tracking
-  const mouse = new Vector2(Infinity, Infinity);
-  const mouseV3 = new Vector3();
-  const mousePlane = new Plane(new Vector3(0, 0, 1), 0);
-  const raycaster = new Raycaster();
-
-  // raycast objects
-  const intersectObjects = [];
-
   // returned object
   const obj = {
     conf,
     renderer: null,
     camera: null,
     cameraCtrl: null,
-    materials: {},
     scene: null,
+    pointer: null,
+    intersectObjects: [],
     size,
-    mouse, mouseV3,
-    raycaster,
     init,
     dispose,
     render,
@@ -95,6 +79,15 @@ export default function useThree() {
     obj.renderer = new WebGLRenderer({ canvas: conf.canvas, antialias: conf.antialias, alpha: conf.alpha });
     obj.renderer.autoClear = conf.autoClear;
 
+    if (conf.resize) {
+      onResize();
+      window.addEventListener('resize', onResize);
+    } else {
+      setSize(conf.width, conf.height);
+    }
+
+    initPointer();
+
     if (conf.orbit_ctrl) {
       obj.orbitCtrl = new OrbitControls(obj.camera, obj.renderer.domElement);
       if (conf.orbit_ctrl instanceof Object) {
@@ -104,36 +97,23 @@ export default function useThree() {
       }
     }
 
-    if (conf.resize) {
-      onResize();
-      window.addEventListener('resize', onResize);
-    } else {
-      setSize(conf.width | 300, conf.height | 150);
-    }
-
-    // conf.mouse_move = conf.mouse_move || conf.mouse_over;
-    if (conf.use_pointer) {
-      if (conf.use_pointer === true) {
-        // use renderer element as mousemove by default
-        obj.mouse_move_element = obj.renderer.domElement;
-      } else {
-        // use custom element as mousemove element
-        obj.mouse_move_element = conf.use_pointer;
-      }
-      obj.mouse_move_element.addEventListener('mousemove', onMousemove);
-      obj.mouse_move_element.addEventListener('mouseleave', onMouseleave);
-      // TODO: touch
-    }
-
-    // if (conf.click) {
-    //   obj.renderer.domElement.addEventListener('click', onClick);
-    // }
-
     afterInitCallbacks.forEach(c => c());
 
     return true;
   };
 
+  function initPointer() {
+    obj.pointer = usePointer({
+      camera: obj.camera,
+      domElement: obj.renderer.domElement,
+      intersectObjects: obj.intersectObjects,
+    });
+
+    if (conf.use_pointer || obj.intersectObjects.length) {
+      obj.pointer.addListeners();
+    }
+  }
+
   /**
    * add after init callback
    */
@@ -191,8 +171,12 @@ export default function useThree() {
    * add intersect object
    */
   function addIntersectObject(o) {
-    if (intersectObjects.indexOf(o) === -1) {
-      intersectObjects.push(o);
+    if (obj.intersectObjects.indexOf(o) === -1) {
+      obj.intersectObjects.push(o);
+    }
+    // add listeners if needed
+    if (obj.pointer && !obj.pointer.listeners) {
+      obj.pointer.addListeners();
     }
   }
 
@@ -200,9 +184,13 @@ export default function useThree() {
    * remove intersect object
    */
   function removeIntersectObject(o) {
-    const i = intersectObjects.indexOf(o);
+    const i = obj.intersectObjects.indexOf(o);
     if (i !== -1) {
-      intersectObjects.splice(i, 1);
+      obj.intersectObjects.splice(i, 1);
+    }
+    // remove listeners if needed
+    if (obj.pointer && !conf.use_pointer && obj.intersectObjects.length === 0) {
+      obj.pointer.removeListeners();
     }
   }
 
@@ -212,50 +200,9 @@ export default function useThree() {
   function dispose() {
     beforeRenderCallbacks = [];
     window.removeEventListener('resize', onResize);
-    if (obj.mouse_move_element) {
-      obj.mouse_move_element.removeEventListener('mousemove', onMousemove);
-      obj.mouse_move_element.removeEventListener('mouseleave', onMouseleave);
-    }
-    // obj.renderer.domElement.removeEventListener('click', onClick);
-    // TODO: touch
+    if (obj.pointer) obj.pointer.removeListeners();
     if (obj.orbitCtrl) obj.orbitCtrl.dispose();
-    this.renderer.dispose();
-  }
-
-  /**
-   */
-  function updateMouse(e) {
-    const rect = obj.mouse_move_element.getBoundingClientRect();
-    mouse.x = ((e.x - rect.left) / size.width) * 2 - 1;
-    mouse.y = -((e.y - rect.top) / size.height) * 2 + 1;
-  }
-
-  /**
-   * click listener
-   */
-  // function onClick(e) {
-  //   updateMouse(e);
-  //   raycaster.setFromCamera(mouse, obj.camera);
-  //   const objects = raycaster.intersectObjects(intersectObjects);
-  //   for (let i = 0; i < objects.length; i++) {
-  //     const o = objects[i].object;
-  //     if (o.onClick) o.onClick(e);
-  //   }
-  // }
-
-  /**
-   * mousemove listener
-   */
-  function onMousemove(e) {
-    updateMouse(e);
-  }
-
-  /**
-   * mouseleave listener
-   */
-  function onMouseleave(e) {
-    mouse.x = Infinity;
-    mouse.y = Infinity;
+    obj.renderer.dispose();
   }
 
   /**

src/meshes/Mesh.js

@@ -1,14 +1,19 @@
 import { watch } from 'vue';
 import { Mesh } from 'three';
 import Object3D from '../core/Object3D.js';
+import { bindProp } from '../tools';
 
 export default {
-  extends: Object3D,
   name: 'Mesh',
+  extends: Object3D,
   props: {
     castShadow: Boolean,
     receiveShadow: Boolean,
-    onHover: Function,
+    onPointerEnter: Function,
+    onPointerOver: Function,
+    onPointerLeave: Function,
+    onPointerDown: Function,
+    onPointerUp: Function,
     onClick: Function,
   },
   // can't use setup because it will not be used in sub components
@@ -24,19 +29,17 @@ export default {
   methods: {
     initMesh() {
       this.mesh = new Mesh(this.geometry, this.material);
+      this.mesh.component = this;
 
-      ['castShadow', 'receiveShadow'].forEach(p => {
-        this.mesh[p] = this[p];
-        watch(() => this[p], () => { this.mesh[p] = this[p]; });
-      });
+      bindProp(this, 'castShadow', this.mesh);
+      bindProp(this, 'receiveShadow', this.mesh);
 
-      if (this.onHover) {
-        this.mesh.onHover = (over) => { this.onHover({ component: this, over }); };
-        this.three.addIntersectObject(this.mesh);
-      }
-
-      if (this.onClick) {
-        this.mesh.onClick = (e) => { this.onClick({ component: this, event: e }); };
+      if (this.onPointerEnter ||
+        this.onPointerOver ||
+        this.onPointerLeave ||
+        this.onPointerDown ||
+        this.onPointerUp ||
+        this.onClick) {
         this.three.addIntersectObject(this.mesh);
       }