D3D练习---动态铁轨

这个demo中演示了如何动态设置Camera

struct  camera
{
    D3DXMATRIX view_matrix;
    D3DXVECTOR3 eye_vector;
    D3DXVECTOR3 lookat_vector;
    D3DXVECTOR3 up_vector;

    D3DXMATRIX  &  getMatrix()
    {
        D3DXMatrixLookAtLH( & view_matrix, & eye_vector,
                                        & lookat_vector,
                                        & up_vector);
         return  view_matrix;
    }
};

const   float  CAMERA_SPEED  =   0.01f ;
camera  g_camera;

g_camera.eye_vector.z  +=  CAMERA_SPEED;
g_d3d_device -> SetTransform(D3DTS_VIEW, & g_camera.getMatrix());

效果图：



Source Code and Executable:

http://www.cppblog.com/Files/sandy/fly.rar