0

所以我正在研究两个值之间的补间,但不知道它们是位置还是比例。因此,我正在创建一个 Tween,其中包含更新循环上的 if 语句/

if( params.type == 'position' ){

  initial = {
    x: params.object.position.x,    
    y: params.object.position.y,
    z: params.object.position.z
  }

  target = {
    x: params.target.x,
    y: params.target.y,
    z: params.target.z,
  }

}else if( params.type == 'scale' ){

  intial = {
    x: params.object.scale.x,    
    y: params.object.scale.y,
    z: params.object.scale.z
  }

  target = {
    x: params.target.x,
    y: params.target.y,
    z: params.target.z,
  }


}

var tween = new TWEEN.Tween( initial ).to( target , params.time * 1000 );
tween.easing( params.easing );


// Need to assign these for the update loop
tween.object    = params.object;
tween.type      = params.type;
tween.tweener   = this;
tween.initial   = initial;
tween.target    = target;
tween.callback  = params.callback;

tween.onUpdate(function( tween ){

  if( this.type == 'position' ){
    this.object.position.x = this.initial.x;
    this.object.position.y = this.initial.y;
    this.object.position.z = this.initial.z;
  }else if( this.type == 'scale' ){
    this.object.scale.x = this.initial.x;
    this.object.scale.y = this.initial.y;
    this.object.scale.z = this.initial.z;
  }

  if( this.initial.x == this.target.x ){

    var i = this.tweener.tweens.indexOf( this );
    this.tweener.tweens.splice( i , 1 );

    this.callback();

  }

});

问题在于,在 onUpdate 循环中,

this

tween.intial

代替

tween

有没有办法在这种情况下引用补间而不是我实际补间的内容?

预先感谢您的帮助!艾萨克

4

1 回答 1

0

我最终在最后添加了一个绑定(结果我很不擅长 javascript...)

tween.onUpdate(函数(补间){

if( this.type == 'position' ){ this.object.position.x = this.initial.x; this.object.position.y = this.initial.y; this.object.position.z = this.initial.z; }else if(this.type == 'scale'){ this.object.scale.x = this.initial.x; this.object.scale.y = this.initial.y; this.object.scale.z = this.initial.z; }

如果(this.initial.x == this.target.x){

var i = this.tweener.tweens.indexOf( this );
this.tweener.tweens.splice( i , 1 );

this.callback();

}

}.bind(补间));

于 2013-10-27T21:37:38.760 回答