https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/jsm/animation/AnimationClipCreator.js

@@ -0,0 +1,117 @@
+import {
+	AnimationClip,
+	BooleanKeyframeTrack,
+	ColorKeyframeTrack,
+	NumberKeyframeTrack,
+	Vector3,
+	VectorKeyframeTrack
+} from '../../../build/three.module.js';
+
+var AnimationClipCreator = function () {};
+
+AnimationClipCreator.CreateRotationAnimation = function ( period, axis ) {
+
+	var times = [ 0, period ], values = [ 0, 360 ];
+
+	axis = axis || 'x';
+	var trackName = '.rotation[' + axis + ']';
+
+	var track = new NumberKeyframeTrack( trackName, times, values );
+
+	return new AnimationClip( null, period, [ track ] );
+
+};
+
+AnimationClipCreator.CreateScaleAxisAnimation = function ( period, axis ) {
+
+	var times = [ 0, period ], values = [ 0, 1 ];
+
+	axis = axis || 'x';
+	var trackName = '.scale[' + axis + ']';
+
+	var track = new NumberKeyframeTrack( trackName, times, values );
+
+	return new AnimationClip( null, period, [ track ] );
+
+};
+
+AnimationClipCreator.CreateShakeAnimation = function ( duration, shakeScale ) {
+
+	var times = [], values = [], tmp = new Vector3();
+
+	for ( var i = 0; i < duration * 10; i ++ ) {
+
+		times.push( i / 10 );
+
+		tmp.set( Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0 ).
+			multiply( shakeScale ).
+			toArray( values, values.length );
+
+	}
+
+	var trackName = '.position';
+
+	var track = new VectorKeyframeTrack( trackName, times, values );
+
+	return new AnimationClip( null, duration, [ track ] );
+
+};
+
+
+AnimationClipCreator.CreatePulsationAnimation = function ( duration, pulseScale ) {
+
+	var times = [], values = [], tmp = new Vector3();
+
+	for ( var i = 0; i < duration * 10; i ++ ) {
+
+		times.push( i / 10 );
+
+		var scaleFactor = Math.random() * pulseScale;
+		tmp.set( scaleFactor, scaleFactor, scaleFactor ).
+			toArray( values, values.length );
+
+	}
+
+	var trackName = '.scale';
+
+	var track = new VectorKeyframeTrack( trackName, times, values );
+
+	return new AnimationClip( null, duration, [ track ] );
+
+};
+
+
+AnimationClipCreator.CreateVisibilityAnimation = function ( duration ) {
+
+	var times = [ 0, duration / 2, duration ], values = [ true, false, true ];
+
+	var trackName = '.visible';
+
+	var track = new BooleanKeyframeTrack( trackName, times, values );
+
+	return new AnimationClip( null, duration, [ track ] );
+
+};
+
+
+AnimationClipCreator.CreateMaterialColorAnimation = function ( duration, colors ) {
+
+	var times = [], values = [],
+		timeStep = duration / colors.length;
+
+	for ( var i = 0; i <= colors.length; i ++ ) {
+
+		times.push( i * timeStep );
+		values.push( colors[ i % colors.length ] );
+
+	}
+
+	var trackName = '.material[0].color';
+
+	var track = new ColorKeyframeTrack( trackName, times, values );
+
+	return new AnimationClip( null, duration, [ track ] );
+
+};
+
+export { AnimationClipCreator };