CCPageTurn3D如何设置翻转

Cocos2d-x
#1

现在CCPageTurn3D似乎只能从右到左翻转，我想要做从左到右翻转，不知道要去如何修改？
求有做过的人指点下，谢谢！

#2

同问～～～～～～～～～～～～～～～～～～～

#3

改下CCActionPageTurn3D.cpp里的update()方法呗，不就是X轴方向的改变么，看下红色代码部分就是改动
void CCPageTurn3D::update(float time)
{
float tt = MAX(0, time - 0.25f);
float deltaAy = (tt * tt * 500);
float ay = -100 - deltaAy;

float deltaTheta = - (float) M_PI_2 * sqrtf( time) ;
float theta = /*0.01f */ + (float) M_PI_2 +deltaTheta;

float sinTheta = sinf(theta);
float cosTheta = cosf(theta);

for (int i = 0; i <= m_sGridSize.width; ++i)
{
    for (int j = 0; j <= m_sGridSize.height; ++j)
    {
        // Get original vertex
        ccVertex3F p = originalVertex(ccp(i ,j));
        
        float R = sqrtf((p.x * p.x) + ((p.y - ay) * (p.y - ay)));
        float r = R * sinTheta;
        float alpha = asinf( p.x / R );
        float beta = alpha / sinTheta;
        float cosBeta = cosf( beta );
        
        // If beta > PI then we've wrapped around the cone
        // Reduce the radius to stop these points interfering with others
      CCSize size = CCDirector::sharedDirector()->getWinSize();

if (beta <= M_PI)
{
// p.x = ( r * sinf(beta));
p.x = (size.width- r * sinf(beta));
}
else
{
// Force X = 0 to stop wrapped
// points
// p.x = 0;
p.x = size.width;
}

        p.y = ( R + ay - ( r * (1 - cosBeta) * sinTheta));

        // We scale z here to avoid the animation being
        // too much bigger than the screen due to perspective transform
        p.z = (r * ( 1 - cosBeta ) * cosTheta) / 7;// "100" didn't work for

        //    Stop z coord from dropping beneath underlying page in a transition
        // issue #751
        if( p.z < 0.5f )
        {
            p.z = 0.5f;
        }
        
        // Set new coords
        setVertex(ccp(i, j), p);
        
    }
}

}

补充下，加上cocos2d.h头文件