SpaceNav.h

//
// Name: SpaceNav.h
// Purpose: Implements Win32-specific support for the SpaceNavigator 6DOF device.
//
// Copyright (c) 2008 Virtual Terrain Project
// Free for all uses, see license.txt for details.
//

#if WIN32
#ifndef _WINDEF_
#error Sorry, this class is only usable from code which includes windows.h
#endif
#endif

#include "vtlib/core/Engine.h"

class vtSpaceNav : public vtEngine
{
public:
    vtSpaceNav();
    ~vtSpaceNav();

    bool Init() { return InitRawDevices(); }
    void SetSpeed(float s) { m_fSpeed = s; }
    float GetSpeed() { return m_fSpeed; }
    void SetAllowRoll(bool b) { m_bAllowRoll = b; }
    bool GetAllowRoll() { return m_bAllowRoll; }
    virtual void OnButtons(uchar b1, uchar b2, uchar b3) {}
    virtual void Eval();

#if WIN32
    // The implementation of this class is WIN32-specfic
    void ProcessWM_INPUTEvent(LPARAM lParam);

protected:
    // ----------------  RawInput ------------------
    HMODULE             m_hUser32Dll;
    typedef UINT (WINAPI *GetRawInputDeviceList_t)(PRAWINPUTDEVICELIST, PUINT, UINT);
    typedef UINT (WINAPI *GetRawInputDeviceInfo_t)(HANDLE, UINT, LPVOID, PUINT);
    typedef BOOL (WINAPI *RegisterRawInputDevices_t)(PCRAWINPUTDEVICE, UINT, UINT);
    typedef UINT (WINAPI *GetRawInputData_t)(HRAWINPUT, UINT, LPVOID, PUINT, UINT);
    GetRawInputData_t   m_pfnGetRawInputData;

    PRAWINPUTDEVICELIST g_pRawInputDeviceList;
    PRAWINPUTDEVICE     g_pRawInputDevices;
    int                 g_nUsagePage1Usage8Devices;
#endif

    bool InitRawDevices();
    float m_fSpeed;
    bool m_bAllowRoll;
};