/**
* Sets the X rotation (angle) of the node in degrees which performs a horizontal rotational skew.
*
* The difference between `setRotationalSkew()` and `setSkew()` is that the first one simulate Flash's skew functionality,
* while the second one uses the real skew function.
*
* 0 is the default rotation angle.
* Positive values rotate node clockwise, and negative values for anti-clockwise.
*
* @param rotationX The X rotation in degrees which performs a horizontal rotational skew.
*
* @warning The physics body doesn't support this.
* @js setRotationX
*/
virtual void setRotationSkewX(float rotationX);
CC_DEPRECATED_ATTRIBUTE virtual void setRotationX(float rotationX) { return setRotationSkewX(rotationX); }
注释没有看仔细，浪费几天的时间.... @js setRotationX----- 这句话的意思是 JS对应的版本是setRotationX，函数
说明： CC_DEPRECATED_ATTRIBUTE 表示 setRotationX 函数 在cocos2d-x 当前版本已经废弃了。 看文档要看仔细了。
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