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Torque/SDK/lib/maxsdk40/MouseProc.h

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+/**********************************************************************
+ *<
+    FILE: MouseProc.h
+
+    DESCRIPTION:  Declares DataEntryMouseProc class
+
+    CREATED BY: Scott Morrison
+
+    HISTORY: created 7 December, 1998
+
+ *> Copyright (c) 1998, All Rights Reserved.
+ **********************************************************************/
+
+class DataEntryMouseProc : public MouseCallBack {
+public:
+    CoreExport DataEntryMouseProc(Object* pObj, int cursor, HINSTANCE hInst);
+
+    CoreExport DataEntryMouseProc();
+
+    // Called when a point is selected
+    CoreExport virtual BOOL OnPointSelected()      {return TRUE; }
+    // Called on every mouse move event
+    CoreExport virtual void OnMouseMove(Point3& p) {}
+    // Tells the system when to allow drawing in mutiple viewports
+    CoreExport virtual BOOL AllowAnyViewport()     { return TRUE; }
+    // Called when backspace is pressed
+    CoreExport virtual void RemoveLastPoint()      {}
+    // Called when the creation is finished
+    CoreExport virtual int OnMouseAbort()          { return CREATE_ABORT; }
+    // Says whether the mouse proc should perform redraws
+    // When used in a CreateMouseCallBack, this should return FALSE
+    CoreExport virtual BOOL PerformRedraw()        { return TRUE; }
+
+    // These methods need to be implemented to get the offset line drawn
+
+    // Tells the object to draw offset lines
+    CoreExport virtual void SetUseConstructionLine(BOOL useLine) = 0;
+    // Sets the endpoints of the line (0 is start, 1 is end)
+    CoreExport virtual void SetConstructionLine(int i, Point3 p) = 0;
+    
+    // The mouse callback function
+    CoreExport int proc(HWND hwnd, int msg, int point, int flags, IPoint2 m );
+    
+    friend class DataEntryBackspaceUser;
+    
+    CoreExport void ClearCreationParams();
+    
+    CoreExport void SetParams(HINSTANCE hInst, Object* pObj, int cursor);
+    
+private:
+    Point3 GetPoint(IPoint2 m, HWND hWnd, ViewExp* pVpt);
+    void SetOffsetBase(IPoint2 m, HWND hWnd, ViewExp* pVpt);
+    BOOL GetNodeTM(Matrix3& tm);
+    IPoint2 ProjectPointToViewport(ViewExp *pVpt, Point3 fp);
+    IPoint2 AngleSnapPoint(Point3 in3, ViewExp* pVpt);
+
+    // The inverse of the transform on the node (or viewport transform,
+    // for creation mouse procs)
+    Matrix3        mTM;
+
+    // Indicates when to ignore upclicks close to down clicks
+    BOOL           mDoNotDouble;
+    // The resource id of the cursor to use
+    int            mCursor;
+    // The instance of the dll using the mouse proc
+    HINSTANCE      mInstance;
+
+    // State for off-construction plane creation
+    Point3         mSnappedPoint;
+    Matrix3        mOriginalViewTM;
+
+    int            mPreviousFlags;
+
+protected:
+    // The object using the mouse proc
+    Object*        mpObject;
+
+    // The number of points selected so far.
+    int            mMouseClick;
+    // The 3D coordinates of the points, in the local coordinate system
+    Tab<Point3>    mPoints;
+    // The 2D points the user selected in the viewport.
+    Tab<IPoint2>   mClickPoints;
+    // TRUE when in the mode where we lift off the construction plane
+    BOOL           mLiftOffCP;
+    // The last window we had an event in
+    HWND           mHwnd;
+    IPoint2        mLastMovePoint;
+};