// Handles.h

#ifndef _HANDLES_H_
#define _HANDLES_H_

#include <windows.h>            /* required for all Windows applications */
#include <windowsx.h>
#include "..\\..\\..\\include\\l_bitmap.h"     /* LEADTOOLS main header file */
#include "..\\..\\..\\include\\l_error.h"      /* LEADTOOLS error definition header file */
#include "types.h"
#include <math.h>

typedef struct tagHANDLEDEF
{
  L_INT nID;
  L_INT nShape;
  COLORREF crFill;
} HANDLEDEF, *pHANDLEDEF;

#define ALMOST_ZERO  0.9  /* small float value suitable for comparing coordinates */
#define DIFFERENT(val1,val2,epsilon) (((val1) < (val2)-(epsilon))||((val1) > (val2)+(epsilon)))

#define ABS(n) (n>0 ? n : -n)


L_INT ROUND(L_DOUBLE a);
L_INT ISDIFFERENT(pANNPOINT pptAnn, LPPOINT ppt);

#define SQR(n) ((n) * (n))
#define MY_DISTANCE(p0,p1) (sqrt(SQR(p1.x - p0.x) + SQR(p1.y - p0.y)))

// Flags for use with ObjectClipCursor
#define OBJECT_CLIP_CURSOR_GROUP (0)
#define OBJECT_CLIP_CURSOR_SINGLETON (1)

//Annotation ID functions
L_INT AnnSetID(HANNOBJECT hObject, L_INT nMainID, L_INT nPartID);
L_INT AnnGetID(HANNOBJECT hObject, L_INT *pnMainID, L_INT *pnPartID);
L_VOID AnnClearAllID(HANNOBJECT hContainer);



L_INT L_EXPORT EXT_CALLBACK HandleLocationCallback(HANNOBJECT hObject, pANNHANDLEINFO pHandleInfo, L_VOID L_FAR * pUserData);
L_INT L_EXPORT EXT_CALLBACK HandleCallback(HANNOBJECT hObject, pANNHANDLEINFO pHandleInfo, L_VOID L_FAR * pUserData);
L_BOOL GetHandleLocation(HANNOBJECT hObject, L_INT nHandleID, LPPOINT pptLocation);
L_VOID AddUserHandles(HANNOBJECT hObject, pANNPOINT pAnnPoints);
L_VOID SpineMeasure_UpdateLine(HANNOBJECT hRect, HANNOBJECT hLine);
L_VOID SpineMeasure_UpdateHandles(HANNOBJECT hObject);
L_INT  ChangeHandleProperties(HWND hWnd, HANNOBJECT hObject, pCHANGEHANDLE pChangeHandle );
L_INT HideDefaultHandles(HANNOBJECT hObject);

L_VOID AnnSortNeighborObjects(HANNOBJECT hObject, HANNOBJECT AnnObjectNeighbors[], L_INT32 nCount);
L_INT AnnGetNeighborObjects(HANNOBJECT hObject, HANNOBJECT *phAnnObject, L_INT32 *pnCount);
L_BOOL GetHandleInfo(HANNOBJECT hObject, L_INT nHandleID, LPPOINT pptLocation, pANNPOINT pptLocationContainer, L_INT *pnIndex);
L_BOOL MoveHandle(HANNOBJECT hObject, L_INT nID, POINT pt);

L_VOID GetBoundingBox(HANNOBJECT hObjects[], L_INT nCount, pANNRECT prcBounds);

L_VOID ObjectClipCursor(LPCHILDDATA pData, HANNOBJECT hObject, POINT ptStart, L_INT nType, L_BOOL bRestore);
L_VOID GetRectSegmentWithHandle(HANNOBJECT hRect, L_INT nID, ANNPOINT aptLine[]);
L_DOUBLE DistanceToLine(ANNPOINT aptLine[], ANNPOINT aptC);
L_DOUBLE DistanceUserHandleToLine(HANNOBJECT hRect, L_INT nID, POINT ptA);
L_DOUBLE DistanceToUserHandle(HANNOBJECT hRect, L_INT nID, POINT ptMove);
ANNPOINT PointAtDistanceToLine(ANNPOINT aptLine[], ANNPOINT aptC, L_DOUBLE dDistance);
POINT PointAtDistanceToOppositeLine(HANNOBJECT hRect, L_INT nID, L_DOUBLE dDistance, POINT ptMove);
POINT PointAtDistanceToUserHandle(HANNOBJECT hRect, L_INT nID, L_DOUBLE dDistance, POINT ptMove);

L_VOID SwapAnnPoints(pANNPOINT pApt0, pANNPOINT pApt1);

L_DOUBLE annDebugGetAngle(ANNPOINT apt1, ANNPOINT apt2, ANNPOINT apt3);
ANNPOINT annDebugMidpoint(ANNPOINT apt1, ANNPOINT apt2);

L_VOID annDebugDumpNeighborObjects(HANNOBJECT AnnObjectNeighbors[], L_INT32 nCount);

#endif _HANDLES_H_