117 lines
2.5 KiB
JavaScript
117 lines
2.5 KiB
JavaScript
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import {
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AnimationClip,
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BooleanKeyframeTrack,
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ColorKeyframeTrack,
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NumberKeyframeTrack,
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Vector3,
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VectorKeyframeTrack
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} from 'three';
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class AnimationClipCreator {
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static CreateRotationAnimation( period, axis = 'x' ) {
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const times = [ 0, period ], values = [ 0, 360 ];
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const trackName = '.rotation[' + axis + ']';
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const track = new NumberKeyframeTrack( trackName, times, values );
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return new AnimationClip( null, period, [ track ] );
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}
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static CreateScaleAxisAnimation( period, axis = 'x' ) {
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const times = [ 0, period ], values = [ 0, 1 ];
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const trackName = '.scale[' + axis + ']';
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const track = new NumberKeyframeTrack( trackName, times, values );
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return new AnimationClip( null, period, [ track ] );
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}
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static CreateShakeAnimation( duration, shakeScale ) {
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const times = [], values = [], tmp = new Vector3();
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for ( let i = 0; i < duration * 10; i ++ ) {
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times.push( i / 10 );
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tmp.set( Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0 ).
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multiply( shakeScale ).
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toArray( values, values.length );
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}
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const trackName = '.position';
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const track = new VectorKeyframeTrack( trackName, times, values );
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return new AnimationClip( null, duration, [ track ] );
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}
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static CreatePulsationAnimation( duration, pulseScale ) {
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const times = [], values = [], tmp = new Vector3();
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for ( let i = 0; i < duration * 10; i ++ ) {
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times.push( i / 10 );
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const scaleFactor = Math.random() * pulseScale;
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tmp.set( scaleFactor, scaleFactor, scaleFactor ).
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toArray( values, values.length );
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}
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const trackName = '.scale';
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const track = new VectorKeyframeTrack( trackName, times, values );
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return new AnimationClip( null, duration, [ track ] );
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}
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static CreateVisibilityAnimation( duration ) {
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const times = [ 0, duration / 2, duration ], values = [ true, false, true ];
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const trackName = '.visible';
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const track = new BooleanKeyframeTrack( trackName, times, values );
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return new AnimationClip( null, duration, [ track ] );
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}
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static CreateMaterialColorAnimation( duration, colors ) {
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const times = [], values = [],
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timeStep = duration / colors.length;
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for ( let i = 0; i < colors.length; i ++ ) {
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times.push( i * timeStep );
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const color = colors[ i ];
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values.push( color.r, color.g, color.b );
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}
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const trackName = '.material.color';
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const track = new ColorKeyframeTrack( trackName, times, values );
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return new AnimationClip( null, duration, [ track ] );
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}
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}
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export { AnimationClipCreator };
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