我有一个OpenGL项目的问题,从void*指针转换为shared_ptr<mytype>.
我正在使用Bullet在刚体上设置指针:
root_physics->rigidBody->setUserPointer(&this->root_directory->handle);
手柄属于类型shared_ptr<mytype>.
该void*指针由子弹的库函数返回,getUserPointer():
RayCallback.m_collisionObject->getUserPointer()
要转换回mytype,static_cast不起作用:
std::shared_ptr<disk_node> u_poi = static_cast< std::shared_ptr<disk_node> >( RayCallback.m_collisionObject->getUserPointer() );
错误,在编译时:
/usr/include/c++/4.8/bits/shared_ptr_base.h:739:39: error: invalid conversion from ‘void*’ to ‘mytype*’ [-fpermissive]
知道如何从void*返回的转换getUserPointer()为shared_ptr<mytype>？