lltoolbrush.h

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#ifndef LL_LLTOOLBRUSH_H
#define LL_LLTOOLBRUSH_H

#include "lltool.h"
#include "v3math.h"
#include "lleditmenuhandler.h"

class LLSurface;
class LLVector3d;
class LLViewerRegion;

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLToolBrushLand
//
// A toolbrush that modifies the land.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class LLToolBrushLand : public LLTool, public LLEditMenuHandler, public LLSingleton<LLToolBrushLand>
{
        typedef std::set<LLViewerRegion*> region_list_t;

public:
        LLToolBrushLand();
        
        // x,y in window coords, 0,0 = left,bot
        virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
        virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask );          
        virtual BOOL handleHover( S32 x, S32 y, MASK mask );
        virtual void handleSelect();
        virtual void handleDeselect();

        // isAlwaysRendered() - return true if this is a tool that should
        // always be rendered regardless of selection.
        virtual BOOL isAlwaysRendered() { return TRUE; }

        // Draw the area that will be affected.
        virtual void render();

        // on Idle is where the land modification actually occurs
        static void onIdle(void* brush_tool);  

        void                    onMouseCaptureLost();

        void modifyLandInSelectionGlobal();
        virtual void    undo();
        virtual BOOL    canUndo() const { return TRUE; }

protected:
        void brush( void );
        void modifyLandAtPointGlobal( const LLVector3d &spot, MASK mask );

        void determineAffectedRegions(region_list_t& regions,
                                                                  const LLVector3d& spot) const;
        void renderOverlay(LLSurface& land, const LLVector3& pos_region,
                                           const LLVector3& pos_world);

        // Does region allow terraform, or are we a god?
        bool canTerraform(LLViewerRegion* regionp) const;

        // Modal dialog that you can't terraform the region
        void alertNoTerraform(LLViewerRegion* regionp);

protected:
        F32 mStartingZ;
        S32 mMouseX;
        S32 mMouseY;
        S32 mBrushIndex;
        BOOL mGotHover;
        BOOL mLastShowParcelOwners;
        BOOL mBrushSelected;
        // Order doesn't matter and we do check for existance of regions, so use a set
        region_list_t mLastAffectedRegions;
};


#endif // LL_LLTOOLBRUSH_H

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