llmanipscale.h

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#ifndef LL_MANIPSCALE_H
#define LL_MANIPSCALE_H

// llmanipscale.h
//
// copyright 2001-2002, linden research inc


#include "lltool.h"
#include "v3math.h"
#include "v4math.h"
#include "llmanip.h"
#include "llviewerobject.h"
#include "llbbox.h"

class LLToolComposite;
class LLColor4;

typedef enum e_scale_manipulator_type
{
        SCALE_MANIP_CORNER,
        SCALE_MANIP_FACE
} EScaleManipulatorType;


class LLManipScale : public LLManip
{
public:
        class ManipulatorHandle
        {
        public:
                LLVector3       mPosition;
                EManipPart      mManipID;
                EScaleManipulatorType                   mType;

                ManipulatorHandle(LLVector3 pos, EManipPart id, EScaleManipulatorType type):mPosition(pos), mManipID(id), mType(type){}
        };


        LLManipScale( LLToolComposite* composite );
        ~LLManipScale();

        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    render();
        virtual void    handleSelect();
        virtual void    handleDeselect();

        virtual BOOL    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
        virtual void    highlightManipulators(S32 x, S32 y);    // decided which manipulator, if any, should be highlighted by mouse hover
        virtual BOOL    canAffectSelection();

        static void             setUniform( BOOL b );
        static BOOL             getUniform();
        static void             setStretchTextures( BOOL b );
        static BOOL             getStretchTextures();
        static void             setShowAxes( BOOL b );
        static BOOL             getShowAxes();

private:
        void                    renderCorners( const LLBBox& local_bbox );
        void                    renderFaces( const LLBBox& local_bbox );
        void                    renderEdges( const LLBBox& local_bbox );
        void                    renderBoxHandle( F32 x, F32 y, F32 z );
        void                    renderAxisHandle( const LLVector3& start, const LLVector3& end );
        void                    renderGuidelinesPart( const LLBBox& local_bbox );
        void                    renderSnapGuides( const LLBBox& local_bbox );

        void                    revert();
        
        inline void             conditionalHighlight( U32 part, const LLColor4* highlight = NULL, const LLColor4* normal = NULL );

        void                    drag( S32 x, S32 y );
        void                    dragFace( S32 x, S32 y );
        void                    dragCorner( S32 x, S32 y );

        void                    sendUpdates( BOOL send_position_update, BOOL send_scale_update, BOOL corner = FALSE);

        LLVector3               faceToUnitVector( S32 part ) const;
        LLVector3               cornerToUnitVector( S32 part ) const;
        LLVector3               edgeToUnitVector( S32 part ) const;
        LLVector3               partToUnitVector( S32 part ) const;
        LLVector3               unitVectorToLocalBBoxExtent( const LLVector3& v, const LLBBox& bbox ) const;
        F32                             partToMaxScale( S32 part, const LLBBox& bbox ) const;
        F32                             partToMinScale( S32 part, const LLBBox& bbox ) const;
        LLVector3               nearestAxis( const LLVector3& v ) const;

        void                    stretchFace( const LLVector3& drag_start_agent, const LLVector3& drag_delta_agent);

        void                    adjustTextureRepeats();         // Adjusts texture coords based on mSavedScale and current scale, only works for boxes

        void                    updateSnapGuides(const LLBBox& bbox);
private:

        F32                             mBoxHandleSize;         // The size of the handles at the corners of the bounding box
        F32                             mScaledBoxHandleSize; // handle size after scaling for selection feedback
        EManipPart              mManipPart;
        LLVector3d              mDragStartPointGlobal;
        LLVector3d              mDragStartCenterGlobal; // The center of the bounding box of all selected objects at time of drag start
        LLVector3d              mDragPointGlobal;
        LLVector3d              mDragFarHitGlobal;
        S32                             mLastMouseX;
        S32                             mLastMouseY;
        BOOL                    mSendUpdateOnMouseUp;
        U32                     mLastUpdateFlags;
        LLLinkedList<ManipulatorHandle>         mProjectedManipulators;
        LLVector4               mManipulatorVertices[14];
        F32                             mScaleSnapUnit1;  // size of snap multiples for axis 1
        F32                             mScaleSnapUnit2;  // size of snap multiples for axis 2
        LLVector3               mScalePlaneNormal1; // normal of plane in which scale occurs that most faces camera
        LLVector3               mScalePlaneNormal2; // normal of plane in which scale occurs that most faces camera
        LLVector3               mSnapGuideDir1;
        LLVector3               mSnapGuideDir2;
        LLVector3               mSnapDir1;
        LLVector3               mSnapDir2;
        F32                             mSnapRegimeOffset;
        F32                             mSnapGuideLength;
        LLVector3               mScaleCenter;
        LLVector3               mScaleDir;
        F32                             mScaleSnapValue;
        BOOL                    mInSnapRegime;
        F32*                    mManipulatorScales;
};

#endif  // LL_MANIPSCALE_H

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