LandVisibilityPatch.h

Go to the documentation of this file.

////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    Scorched3D is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#if !defined(__INCLUDE_LandVisibilityPatchh_INCLUDE__)
#define __INCLUDE_LandVisibilityPatchh_INCLUDE__

#include <common/Vector.h>

class MipMapPatchIndex;

class LandVisibilityPatch
{
public:
        LandVisibilityPatch();
        ~LandVisibilityPatch();

        void setLocation(int x, int y,
                LandVisibilityPatch *leftPatch, 
                LandVisibilityPatch *rightPatch, 
                LandVisibilityPatch *topPatch, 
                LandVisibilityPatch *bottomPatch);
        bool setVisible(float distance);
        void setNotVisible();
        void setRecalculateErrors() { recalculateErrors_ = true; }

        int getVisibilityIndex() { return visible_?visibilityIndex_:-1; }
        Vector &getPosition() { return position_; }
        float getBoundingSize() { return boundingSize_; }

        LandVisibilityPatch *getLeftPatch() { return leftPatch_; }
        LandVisibilityPatch *getRightPatch() { return rightPatch_; }
        LandVisibilityPatch *getTopPatch() { return topPatch_; }
        LandVisibilityPatch *getBottomPatch() { return bottomPatch_; }

        void draw(MipMapPatchIndex &index, bool simple);
        void drawLODLevel(MipMapPatchIndex &index);

protected:
        int x_, y_;
        int dataOffSet_;
        float maxHeight_, minHeight_, boundingSize_;
        int dataSize_;
        int visibilityIndex_;
        bool visible_, recalculateErrors_;
        float indexErrors_[6];
        Vector position_;
        LandVisibilityPatch *leftPatch_;
        LandVisibilityPatch *rightPatch_; 
        LandVisibilityPatch *topPatch_;
        LandVisibilityPatch *bottomPatch_;

        void calculateErrors();
};

#endif // __INCLUDE_LandVisibilityPatchh_INCLUDE__

---