157 lines
3.2 KiB
JavaScript
157 lines
3.2 KiB
JavaScript
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import { KeyframeTrackPrototype } from './KeyframeTrackPrototype';
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import { StringKeyframeTrack } from './tracks/StringKeyframeTrack';
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import { BooleanKeyframeTrack } from './tracks/BooleanKeyframeTrack';
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import { QuaternionKeyframeTrack } from './tracks/QuaternionKeyframeTrack';
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import { ColorKeyframeTrack } from './tracks/ColorKeyframeTrack';
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import { VectorKeyframeTrack } from './tracks/VectorKeyframeTrack';
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import { NumberKeyframeTrack } from './tracks/NumberKeyframeTrack';
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import { AnimationUtils } from './AnimationUtils';
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import { KeyframeTrackConstructor } from './KeyframeTrackConstructor';
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/**
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*
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* A timed sequence of keyframes for a specific property.
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*
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*
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* @author Ben Houston / http://clara.io/
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* @author David Sarno / http://lighthaus.us/
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* @author tschw
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*/
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function KeyframeTrack( name, times, values, interpolation ) {
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KeyframeTrackConstructor.apply( this, arguments );
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}
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KeyframeTrack.prototype = KeyframeTrackPrototype;
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KeyframeTrackPrototype.constructor = KeyframeTrack;
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// Static methods:
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Object.assign( KeyframeTrack, {
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// Serialization (in static context, because of constructor invocation
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// and automatic invocation of .toJSON):
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parse: function( json ) {
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if( json.type === undefined ) {
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throw new Error( "track type undefined, can not parse" );
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}
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var trackType = KeyframeTrack._getTrackTypeForValueTypeName( json.type );
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if ( json.times === undefined ) {
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var times = [], values = [];
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AnimationUtils.flattenJSON( json.keys, times, values, 'value' );
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json.times = times;
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json.values = values;
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}
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// derived classes can define a static parse method
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if ( trackType.parse !== undefined ) {
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return trackType.parse( json );
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} else {
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// by default, we asssume a constructor compatible with the base
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return new trackType(
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json.name, json.times, json.values, json.interpolation );
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}
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},
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toJSON: function( track ) {
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var trackType = track.constructor;
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var json;
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// derived classes can define a static toJSON method
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if ( trackType.toJSON !== undefined ) {
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json = trackType.toJSON( track );
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} else {
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// by default, we assume the data can be serialized as-is
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json = {
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'name': track.name,
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'times': AnimationUtils.convertArray( track.times, Array ),
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'values': AnimationUtils.convertArray( track.values, Array )
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};
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var interpolation = track.getInterpolation();
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if ( interpolation !== track.DefaultInterpolation ) {
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json.interpolation = interpolation;
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}
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}
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json.type = track.ValueTypeName; // mandatory
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return json;
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},
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_getTrackTypeForValueTypeName: function( typeName ) {
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switch( typeName.toLowerCase() ) {
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case "scalar":
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case "double":
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case "float":
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case "number":
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case "integer":
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return NumberKeyframeTrack;
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case "vector":
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case "vector2":
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case "vector3":
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case "vector4":
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return VectorKeyframeTrack;
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case "color":
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return ColorKeyframeTrack;
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case "quaternion":
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return QuaternionKeyframeTrack;
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case "bool":
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case "boolean":
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return BooleanKeyframeTrack;
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case "string":
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return StringKeyframeTrack;
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}
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throw new Error( "Unsupported typeName: " + typeName );
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}
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} );
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export { KeyframeTrack };
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