没有做出任何改变,还是用了OpenMesh::IO::read_texture函数,请使用OpenMesh8.0版本中有的函数

非常抱歉之前的回答有误，确实 OpenMesh 库中没有 `OpenMesh::IO::read_texture` 函数。以下是使用 OpenMesh 8.0 版本中的函数来读取带纹理的网格文件的示例代码：

#include <iostream>
#include <OpenMesh/Core/IO/MeshIO.hh>
#include <OpenMesh/Core/Mesh/TriMesh_ArrayKernelT.hh>

struct MyTraits : public OpenMesh::DefaultTraits {
    typedef OpenMesh::Vec3d Point;
    typedef OpenMesh::Vec3d Normal;
    typedef OpenMesh::Vec2d TexCoord2D;
};

typedef OpenMesh::TriMesh_ArrayKernelT<MyTraits> MyMesh;

int main(int argc, char **argv) {
    MyMesh mesh;
    if (!OpenMesh::IO::read_mesh(mesh, "my_mesh.obj")) {
        std::cerr << "Failed to read mesh file!" << std::endl;
        return 1;
    }

    // Check if the mesh has texture coordinates
    if (!mesh.has_vertex_texcoords2D()) {
        std::cerr << "Mesh doesn't have texture coordinates!" << std::endl;
        return 1;
    }

    // Read texture coordinates
    OpenMesh::MPropHandleT<MyMesh::TexCoord2D> texcoordProp;
    if (!mesh.get_property_handle(texcoordProp, "v:texcoord")) {
        std::cerr << "Failed to get texture coordinate property handle!" << std::endl;
        return 1;
    }
    if (!OpenMesh::IO::read_tex(mesh, texcoordProp, "my_texture.png")) {
        std::cerr << "Failed to read texture file!" << std::endl;
        return 1;
    }

    // Access texture coordinates
    for (MyMesh::VertexIter v_it = mesh.vertices_begin(); v_it != mesh.vertices_end(); ++v_it) {
        MyMesh::TexCoord2D texCoord = mesh.property(texcoordProp, *v_it);
        std::cout << "Vertex " << *v_it << " has texture coordinates (" << texCoord[0] << ", " << texCoord[1] << ")" << std::endl;
    }

    return 0;
}

这个示例使用了 `OpenMesh::IO::read_mesh` 函数来读取网格文件，使用了 `OpenMesh::IO::read_tex` 函数来读取纹理文件，并且使用了 `OpenMesh::MPropHandleT` 类型来存储纹理坐标属性。请注意，纹理文件仍然需要是 PNG 格式。另外请注意，如果您在使用自定义 traits 类型时需要读取不同的属性，请相应地修改 traits 类型的定义。