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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,33 +1,84 @@ | ||
| /** | ||
| * Snap entity to the closest interval specified by `snap`. | ||
| * Offset entity by `offset`. | ||
| * If localId provided, then use the entity returned as the local reference space | ||
| */ | ||
| AFRAME.registerComponent('snap', { | ||
| dependencies: ['position'], | ||
|
|
||
| schema: { | ||
| offset: {type: 'vec3'}, | ||
| snap: {type: 'vec3'} | ||
| offset: {type: 'number'}, | ||
| snap: {type: 'number'}, | ||
| localId: {type: 'selector'} | ||
| }, | ||
|
|
||
| init: function () { | ||
| var self = this; | ||
| this.helperVector = new THREE.Vector3(); | ||
| this.originalPos = this.el.getAttribute('position'); | ||
| this.el.addEventListener('componentchanged', function (evt) { | ||
| if (evt.detail.name === 'position') { | ||
| self.update() | ||
| }; | ||
| }); | ||
| this.localEl = null; | ||
| if (!!this.data.anchorId) { | ||
| this.localEl = document.querySelector(this.data.localId) | ||
| } | ||
| }, | ||
|
|
||
| update: function () { | ||
| // this element should be a child of the parent anchor container | ||
| // then use snapper as usual | ||
| const data = this.data; | ||
|
|
||
| const pos = AFRAME.utils.clone(this.originalPos); | ||
| pos.x = Math.floor(pos.x / data.snap.x) * data.snap.x + data.offset.x; | ||
| pos.y = Math.floor(pos.y / data.snap.y) * data.snap.y + data.offset.y; | ||
| pos.z = Math.floor(pos.z / data.snap.z) * data.snap.z + data.offset.z; | ||
| // const pos = AFRAME.utils.clone(this.originalPos); | ||
| // pos.x = Math.floor(pos.x / data.snap) * data.snap + data.offset.x; | ||
| // pos.y = Math.floor(pos.y / data.snap) * data.snap + data.offset.y; | ||
| // pos.z = Math.floor(pos.z / data.snap) * data.snap + data.offset.z; | ||
|
|
||
| // this.el.setAttribute('position', pos); | ||
|
|
||
| const _snapper = (originalPosition, offset, snap) => { | ||
| // snap the intersection location to the gridlines | ||
| const helperVector = this.helperVector; | ||
| helperVector.copy(originalPosition); | ||
|
|
||
| helperVector.x = Math.floor(helperVector.x / snap) * snap + offset; | ||
| helperVector.y = Math.floor(helperVector.y / snap) * snap + offset; | ||
| helperVector.z = Math.floor(helperVector.z / snap) * snap + offset; | ||
| return helperVector; | ||
| }; | ||
|
|
||
| const _worldToLocal = (originalPosition) => { | ||
| // snap the intersection location to the gridlines | ||
| const helperVector = this.helperVector; | ||
| helperVector.copy(originalPosition); | ||
| this.el.object3D.worldToLocal(helperVector); | ||
| return helperVector; | ||
| }; | ||
|
|
||
| const _convertLocalToWorld = (localPosition) => { | ||
| // Use Three.js's localToWorld method to convert the position | ||
| const worldPosition = new THREE.Vector3(); | ||
| worldPosition.copy(localPosition); | ||
| this.el.object3D.localToWorld(worldPosition); | ||
|
|
||
| return worldPosition; | ||
| } | ||
|
|
||
| let snapPos; | ||
| if (this.localEl && this.localEl.object3D) { | ||
| // this.el.object3D.quaternion.copy(this.anchorEl.object3D.quaternion); copy from | ||
| const localPos = _worldToLocal(this.localEl.object3D.position); // convert world object from which to localize (anchor) to local position of this object | ||
| const localSnapPos = _snapper(localPos, this.data.offset, this.data.snap); // use snapping logic which assumes local intersection | ||
| snapPos = _convertLocalToWorld(localSnapPos); // world snap position | ||
| } else { | ||
| snapPos = _snapper(this.el.object3D.position, this.data.offset, this.data.snap); | ||
| } | ||
|
|
||
| this.el.object3D.position.copy(snapPos); | ||
|
|
||
|
|
||
| this.el.setAttribute('position', pos); | ||
| } | ||
| }); |