Creating Objects and executing its functions in OpenCL Kernel

I'm trying to convert my current quad tree code into one that is parallel using OpenCL.

Here is my buildTree() function;

void QuadTree::buildTreeParallel()
{
    std::default_random_engine generator((int)std::chrono::system_clock::now().time_since_epoch().count());
    std::uniform_real_distribution<double> distribution(-1.0, 1.0);
    double x;
    double y;

    for (size_t i = 0; i != 10000; i++)
    {
        x = distribution(generator);
        y = distribution(generator);
        Particle* aParticle = new Particle(x, y);
        insertToNode(aParticle);
    }
}

This function in turn calls the insertToNode() function which is located in the QuadTree class. My question is, how would I port the objects and functions to OpenCL and execute this code? I tried the following:

__kernel void hello(__global QuadTree* aTree)
{
    //execute buildTreeParallel() and insertToNode() here
} 

Given that OpenCL is based on C99, I cannot use the random number generator, nor the vector class (in which I store particles) from the C++ libraries. How can I convert this code to OpenCL?