读取parasolid数据

To read a Parasolid file, you can use the `load` method of the `Parasolid_pk` class. Here is an example:

#include <iostream>
#include <vector>
#include "ParasolidKrnl.hxx"
#include "PK.hxx"

using namespace ParasolidKrnl;

int main() {
    Parasolid_pk pk;
    Parasolid_session* session = pk.startSession();

    // Load the part
    std::string filename = "example.x_t";
    Parasolid_int_t box = pk.load(filename.c_str());

    // Get the vertices of the box
    std::vector<double> vertices;
    pk.getVertices(box, vertices);

    // Print the coordinates of the first vertex
    std::cout << "First vertex: (" << vertices[0] << ", " << vertices[1] << ", " << vertices[2] << ")" << std::endl;

    // End the session
    pk.endSession(session);
    return 0;
}

In this example, we first start a Parasolid session using the `startSession()` method. We then load a Parasolid file using the `load()` method, which takes the filename as input and returns the ID of the part. We can then retrieve the vertices of the part using the `getVertices()` method. Finally, we print the coordinates of the first vertex and end the session using the `endSession()` method.