90 lines
3.5 KiB
TypeScript
90 lines
3.5 KiB
TypeScript
///<reference path="./Tweens.ts"/>
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module es {
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/**
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* 对任何与Transform相关的属性tweens都是有用的枚举
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*/
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export enum TransformTargetType {
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position,
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localPosition,
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scale,
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localScale,
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rotationDegrees,
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localRotationDegrees,
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}
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/**
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* 这是一个特殊的情况，因为Transform是迄今为止最被ween的对象。
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* 我们将Tween和ITweenTarget封装在一个单一的、可缓存的类中
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*/
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export class TransformVector2Tween extends Vector2Tween implements ITweenTarget<Vector2> {
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private _transform: Transform;
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private _targetType: TransformTargetType;
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public setTweenedValue(value: Vector2) {
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switch (this._targetType) {
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case TransformTargetType.position:
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this._transform.position = value;
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break;
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case TransformTargetType.localPosition:
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this._transform.localPosition = value;
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break;
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case TransformTargetType.scale:
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this._transform.scale = value;
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break;
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case TransformTargetType.localScale:
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this._transform.localScale = value;
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break;
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case TransformTargetType.rotationDegrees:
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this._transform.rotationDegrees = value.x;
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case TransformTargetType.localRotationDegrees:
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this._transform.localRotationDegrees = value.x;
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break;
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}
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}
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public getTweenedValue(): Vector2 {
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switch (this._targetType) {
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case TransformTargetType.position:
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return this._transform.position;
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case TransformTargetType.localPosition:
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return this._transform.localPosition;
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case TransformTargetType.scale:
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return this._transform.scale;
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case TransformTargetType.localScale:
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return this._transform.localScale;
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case TransformTargetType.rotationDegrees:
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return new Vector2(this._transform.rotationDegrees, this._transform.rotationDegrees);
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case TransformTargetType.localRotationDegrees:
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return new Vector2(this._transform.localRotationDegrees, 0);
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}
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}
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public getTargetObject() {
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return this._transform;
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}
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public setTargetAndType(transform: Transform, targetType: TransformTargetType) {
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this._transform = transform;
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this._targetType = targetType;
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}
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protected updateValue() {
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// 非相对角勒普的特殊情况，使他们采取尽可能短的旋转
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if ((this._targetType == TransformTargetType.rotationDegrees ||
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this._targetType == TransformTargetType.localRotationDegrees) && !this._isRelative) {
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this.setTweenedValue(Lerps.easeAngle(this._easeType, this._fromValue, this._toValue, this._elapsedTime, this._duration));
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} else {
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this.setTweenedValue(Lerps.ease(this._easeType, this._fromValue, this._toValue, this._elapsedTime, this._duration));
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}
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}
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public recycleSelf() {
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if (this._shouldRecycleTween) {
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this._target = null;
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this._nextTween = null;
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this._transform = null;
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Pool.free(Vector2Tween, this);
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}
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}
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}
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} |