aframe-animation-component
Version:
Animations in A-Frame using anime.js
703 lines (599 loc) • 33.4 kB
JavaScript
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/* 0 */
/***/ (function(module, exports, __webpack_require__) {
/* global AFRAME, THREE */
var anime = __webpack_require__(1);
AFRAME.anime = anime;
if (typeof AFRAME === 'undefined') {
throw new Error('Component attempted to register before AFRAME was available.');
}
var colorHelperFrom = new THREE.Color();
var colorHelperTo = new THREE.Color();
var utils = AFRAME.utils;
var getComponentProperty = utils.entity.getComponentProperty;
var setComponentProperty = utils.entity.setComponentProperty;
var splitCache = {};
var TYPE_COLOR = 'color';
var PROP_POSITION = 'position';
var PROP_ROTATION = 'rotation';
var PROP_SCALE = 'scale';
var STRING_COMPONENTS = 'components';
var STRING_OBJECT3D = 'object3D';
/**
* Animation component for A-Frame using anime.js.
*
* The component manually controls the tick by setting `autoplay: false` on anime.js and
* manually * calling `animation.tick()` in the tick handler. To pause or resume, we toggle a
* boolean * flag * `isAnimationPlaying`.
*
* anime.js animation config for tweenining Javascript objects and values works as:
*
* config = {
* targets: {foo: 0.0, bar: '#000'},
* foo: 1.0,
* bar: '#FFF'
* }
*
* The above will tween each property in `targets`. The `to` values are set in the root of
* the config.
*
* @member {object} animation - anime.js instance.
* @member {boolean} animationIsPlaying - Control if animation is playing.
*/
AFRAME.registerComponent('animation', {
schema: {
autoplay: {default: true},
delay: {default: 0},
dir: {default: ''},
dur: {default: 1000},
easing: {default: 'easeInQuad'},
elasticity: {default: 400},
enabled: {default: true},
from: {default: ''},
loop: {
default: 0,
parse: function (value) {
// Boolean or integer.
if (value === true || value === 'true') { return true; }
if (value === false || value === 'false') { return false; }
return parseInt(value, 10);
}
},
property: {default: ''},
startEvents: {type: 'array'},
pauseEvents: {type: 'array'},
resumeEvents: {type: 'array'},
to: {default: ''},
type: {default: ''},
isRawProperty: {default: false}
},
multiple: true,
init: function () {
var self = this;
this.eventDetail = {name: this.attrName};
this.time = 0;
this.animation = null;
this.animationIsPlaying = false;
this.onStartEvent = this.onStartEvent.bind(this);
this.beginAnimation = this.beginAnimation.bind(this);
this.pauseAnimation = this.pauseAnimation.bind(this);
this.resumeAnimation = this.resumeAnimation.bind(this);
this.fromColor = {};
this.toColor = {};
this.targets = {};
this.targetsArray = [];
this.updateConfigForDefault = this.updateConfigForDefault.bind(this);
this.updateConfigForRawColor = this.updateConfigForRawColor.bind(this);
this.config = {
complete: function () {
self.animationIsPlaying = false;
self.el.emit('animationcomplete', self.eventDetail);
if (self.id) {
self.el.emit('animationcomplete__' + self.id, self.eventDetail, false);
}
}
};
},
update: function (oldData) {
var config = this.config;
var data = this.data;
this.animationIsPlaying = false;
if (oldData.enabled && !this.data.enabled) {
this.animationIsPlaying = false;
return;
}
if (!data.property) { return; }
// Base config.
config.autoplay = false;
config.direction = data.dir;
config.duration = data.dur;
config.easing = data.easing;
config.elasticity = data.elasticity;
config.loop = data.loop;
// Start new animation.
this.createAndStartAnimation();
},
tick: function (t, dt) {
if (!this.animationIsPlaying) { return; }
this.time += dt;
this.animation.tick(this.time);
},
remove: function () {
this.pauseAnimation();
this.removeEventListeners();
},
pause: function () {
this.paused = true;
this.pausedWasPlaying = this.animationIsPlaying;
this.pauseAnimation();
this.removeEventListeners();
},
/**
* `play` handler only for resuming scene.
*/
play: function () {
if (!this.paused) { return; }
this.paused = false;
this.addEventListeners();
if (this.pausedWasPlaying) {
this.resumeAnimation();
this.pausedWasPlaying = false;
}
},
/**
* Start animation from scratch.
*/
createAndStartAnimation: function () {
var data = this.data;
this.updateConfig();
this.animationIsPlaying = false;
this.animation = anime(this.config);
this.removeEventListeners();
this.addEventListeners();
// Wait for start events for animation.
if (!data.autoplay || data.startEvents && data.startEvents.length) { return; }
// Delay animation.
if (data.delay) {
setTimeout(this.beginAnimation, data.delay);
return;
}
// Play animation.
this.beginAnimation();
},
/**
* This is before animation start (including from startEvents).
* Set to initial state (config.from, time = 0, seekTime = 0).
*/
beginAnimation: function () {
this.updateConfig();
this.time = 0;
this.animationIsPlaying = true;
this.stopRelatedAnimations();
this.el.emit('animationbegin', this.eventDetail);
},
pauseAnimation: function () {
this.animationIsPlaying = false;
},
resumeAnimation: function () {
this.animationIsPlaying = true;
},
/**
* startEvents callback.
*/
onStartEvent: function () {
if (!this.data.enabled) { return; }
this.updateConfig();
if (this.animation) {
this.animation.pause();
}
this.animation = anime(this.config);
// Include the delay before each start event.
if (this.data.delay) {
setTimeout(this.beginAnimation, this.data.delay);
return;
}
this.beginAnimation();
},
/**
* rawProperty: true and type: color;
*/
updateConfigForRawColor: function () {
var config = this.config;
var data = this.data;
var el = this.el;
var from;
var key;
var to;
if (this.waitComponentInitRawProperty(this.updateConfigForRawColor)) {
return;
}
from = data.from || getRawProperty(el, data.property);
to = data.to;
// Use r/g/b vector for color type.
this.setColorConfig(from, to);
from = this.fromColor;
to = this.toColor;
this.targetsArray.length = 0;
this.targetsArray.push(from);
config.targets = this.targetsArray;
for (key in to) { config[key] = to[key]; }
config.update = (function () {
var lastValue = {};
lastValue.r = from.r;
lastValue.g = from.g;
lastValue.b = from.b;
return function (anim) {
var value;
value = anim.animatables[0].target;
// For animation timeline.
if (value.r === lastValue.r &&
value.g === lastValue.g &&
value.b === lastValue.b) { return; }
setRawProperty(el, data.property, value, data.type);
};
})();
},
/**
* Stuff property into generic `property` key.
*/
updateConfigForDefault: function () {
var config = this.config;
var data = this.data;
var el = this.el;
var from;
var key;
var isBoolean;
var isNumber;
var to;
if (this.waitComponentInitRawProperty(this.updateConfigForDefault)) {
return;
}
from = data.from || (
isRawProperty(data)
? getRawProperty(el, data.property)
: getComponentProperty(el, data.property)
);
to = data.to;
isNumber = !isNaN(from || to);
if (isNumber) {
from = parseFloat(from);
to = parseFloat(to);
} else {
from = from ? from.toString() : from;
to = to ? to.toString() : to;
}
// Convert booleans to integer to allow boolean flipping.
isBoolean = to === 'true' || to === 'false';
if (isBoolean) {
from = data.from === 'true' ? 1 : 0;
to = data.to === 'true' ? 1 : 0;
}
this.targets.aframeProperty = from;
config.targets = this.targets;
config.aframeProperty = to;
config.update = (function () {
var lastValue = from;
return function (anim) {
var value;
value = anim.animatables[0].target.aframeProperty;
// Need to do a last value check for animation timeline since all the tweening
// begins simultaenously even if the value has not changed. Also better for perf
// anyways.
if (value === lastValue) { return; }
lastValue = value;
if (isBoolean) {
value = value >= 1 ? true : false;
}
if (isRawProperty(data)) {
setRawProperty(el, data.property, value, data.type);
} else {
setComponentProperty(el, data.property, value);
}
};
})();
},
/**
* Extend x/y/z/w onto the config.
* Update vector by modifying object3D.
*/
updateConfigForVector: function () {
var config = this.config;
var data = this.data;
var el = this.el;
var key;
var from;
var to;
// Parse coordinates.
from = data.from
? AFRAME.utils.coordinates.parse(data.from) // If data.from defined, use that.
: getComponentProperty(el, data.property); // If data.from not defined, get on the fly.
to = AFRAME.utils.coordinates.parse(data.to);
// Animate rotation through radians.
if (data.property === PROP_ROTATION) {
toRadians(from);
toRadians(to);
}
// Set to and from.
this.targetsArray.length = 0;
this.targetsArray.push(from);
config.targets = this.targetsArray;
for (key in to) { config[key] = to[key]; }
// If animating object3D transformation, run more optimized updater.
if (data.property === PROP_POSITION || data.property === PROP_ROTATION ||
data.property === PROP_SCALE) {
config.update = (function () {
var lastValue = {};
lastValue.x = from.x;
lastValue.y = from.y;
lastValue.z = from.z;
return function (anim) {
var value = anim.animatables[0].target;
// For animation timeline.
if (value.x === lastValue.x &&
value.y === lastValue.y &&
value.z === lastValue.z) { return; }
lastValue.x = value.x;
lastValue.y = value.y;
lastValue.z = value.z;
el.object3D[data.property].set(value.x, value.y, value.z);
};
})();
return;
}
// Animating some vector.
config.update = (function () {
var lastValue = {};
lastValue.x = from.x;
lastValue.y = from.y;
lastValue.z = from.z;
return function (anim) {
var value = anim.animations[0].target;
// For animation timeline.
if (value.x === lastValue.x &&
value.y === lastValue.y &&
value.z === lastValue.z) { return; }
lastValue.x = value.x;
lastValue.y = value.y;
lastValue.z = value.z;
setComponentProperty(el, data.property, value);
}
})();
},
/**
* Update the config before each run.
*/
updateConfig: function () {
var propType;
// Route config type.
propType = getPropertyType(this.el, this.data.property);
if (isRawProperty(this.data) && this.data.type === TYPE_COLOR) {
this.updateConfigForRawColor();
} else if (propType === 'vec2' || propType === 'vec3' || propType === 'vec4') {
this.updateConfigForVector();
} else {
this.updateConfigForDefault();
}
},
/**
* Wait for component to initialize.
*/
waitComponentInitRawProperty: function (cb) {
var componentName;
var data = this.data;
var el = this.el;
var self = this;
if (data.from) { return false; }
if (!data.property.startsWith(STRING_COMPONENTS)) { return false; }
componentName = splitDot(data.property)[1];
if (el.components[componentName]) { return false; }
el.addEventListener('componentinitialized', function wait (evt) {
if (evt.detail.name !== componentName) { return; }
cb();
// Since the config was created async, create the animation now since we missed it
// earlier.
self.animation = anime(self.config);
el.removeEventListener('componentinitialized', wait);
});
return true;
},
/**
* Make sure two animations on the same property don't fight each other.
* e.g., animation__mouseenter="property: material.opacity"
* animation__mouseleave="property: material.opacity"
*/
stopRelatedAnimations: function () {
var component;
var componentName;
for (componentName in this.el.components) {
component = this.el.components[componentName];
if (componentName === this.attrName) { continue; }
if (component.name !== 'animation') { continue; }
if (!component.animationIsPlaying) { continue; }
if (component.data.property !== this.data.property) { continue; }
component.animationIsPlaying = false;
}
},
addEventListeners: function () {
var data = this.data;
var el = this.el;
addEventListeners(el, data.startEvents, this.onStartEvent);
addEventListeners(el, data.pauseEvents, this.pauseAnimation);
addEventListeners(el, data.resumeEvents, this.resumeAnimation);
},
removeEventListeners: function () {
var data = this.data;
var el = this.el;
removeEventListeners(el, data.startEvents, this.onStartEvent);
removeEventListeners(el, data.pauseEvents, this.pauseAnimation);
removeEventListeners(el, data.resumeEvents, this.resumeAnimation);
},
setColorConfig: function (from, to) {
colorHelperFrom.set(from);
colorHelperTo.set(to);
from = this.fromColor;
to = this.toColor;
from.r = colorHelperFrom.r;
from.g = colorHelperFrom.g;
from.b = colorHelperFrom.b;
to.r = colorHelperTo.r;
to.g = colorHelperTo.g;
to.b = colorHelperTo.b;
}
});
/**
* Given property name, check schema to see what type we are animating.
* We just care whether the property is a vector.
*/
function getPropertyType (el, property) {
var component;
var componentName;
var split;
var propertyName;
split = property.split('.');
componentName = split[0];
propertyName = split[1];
component = el.components[componentName] || AFRAME.components[componentName];
// Primitives.
if (!component) { return null; }
// Dynamic schema. We only care about vectors anyways.
if (propertyName && !component.schema[propertyName]) { return null; }
// Multi-prop.
if (propertyName) { return component.schema[propertyName].type; }
// Single-prop.
return component.schema.type;
}
/**
* Convert object to radians.
*/
function toRadians (obj) {
obj.x = THREE.Math.degToRad(obj.x);
obj.y = THREE.Math.degToRad(obj.y);
obj.z = THREE.Math.degToRad(obj.z);
}
function addEventListeners (el, eventNames, handler) {
var i;
for (i = 0; i < eventNames.length; i++) {
el.addEventListener(eventNames[i], handler);
}
}
function removeEventListeners (el, eventNames, handler) {
var i;
for (i = 0; i < eventNames.length; i++) {
el.removeEventListener(eventNames[i], handler);
}
}
function getRawProperty (el, path) {
var i;
var split;
var value;
split = splitDot(path);
value = el;
for (i = 0; i < split.length; i++) {
value = value[split[i]];
}
return value;
}
function setRawProperty (el, path, value, type) {
var i;
var split;
var propertyName;
var targetValue;
// Walk.
split = splitDot(path);
targetValue = el;
for (i = 0; i < split.length - 1; i++) { targetValue = targetValue[split[i]]; }
propertyName = split[split.length - 1];
// Raw color.
if (type === TYPE_COLOR) {
if ('r' in targetValue[propertyName]) {
targetValue[propertyName].r = value.r;
targetValue[propertyName].g = value.g;
targetValue[propertyName].b = value.b;
} else {
targetValue[propertyName].x = value.r;
targetValue[propertyName].y = value.g;
targetValue[propertyName].z = value.b;
}
return;
}
targetValue[propertyName] = value;
}
function splitDot (path) {
if (path in splitCache) { return splitCache[path]; }
splitCache[path] = path.split('.');
return splitCache[path];
}
function isRawProperty (data) {
return data.isRawProperty || data.property.startsWith(STRING_COMPONENTS) ||
data.property.startsWith(STRING_OBJECT3D);
}
/***/ }),
/* 1 */
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