GlutDrawer.cpp

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#include "GlutDrawer.h"

#include "MT_assert.h"

MEM_SmartPtr<GlutDrawManager> GlutDrawManager::m_s_instance = MEM_SmartPtr<GlutDrawManager>();

        GlutDrawManager *
GlutDrawManager::
Instance(
){
        if (m_s_instance == NULL) {
                m_s_instance = new GlutDrawManager();
        }

        return m_s_instance;
}


// this is the function you should pass to glut

        void
GlutDrawManager::
Draw(
){
        GlutDrawManager *manager = GlutDrawManager::Instance();

        if (manager->m_drawer != NULL) {
                manager->m_drawer->Draw();
        }
}

        void
GlutDrawManager::
InstallDrawer(
        GlutDrawer * drawer
){

        MT_assert(m_drawer == NULL);
        m_drawer = drawer;
}

        void
GlutDrawManager::
ReleaseDrawer(
){
        m_drawer = NULL;
}


GlutDrawManager::
~GlutDrawManager(
){

        delete(m_drawer);
}