kev/Drawer/Module/GeoSigmaDraw/InterfaceCurve.cpp

#include "Stdafx.h"
#include "SigmaView.h"
#include "ItemCurveArc.h"
#include "ItemCurveEdit.h"
#include "ItemSelect.h"
#include "ItemCurveProcess.h"
#include "ItemCurveEditDeleteMulNodes.h"
#include "ActionAddItem.h"
#include "ActionListItem.h"
#include "ActionBackupItem.h"
#include "BufferAgency.h"
#include "ItemLinkCurve.h"
#include "TinyXml/tinyxml.h"
#include "PolygonCombiner.h"
#include "BoundaryDetection.h"
#include "GapDetection.h"
#include "OverlapDetection.h"
#include "ActionComboItem.h"
#include "ActionDeleteLayerItem.h"
#include "Legend.h"
#include "PolygonSnapper.h"
#include "ActionComboItem.h"

#pragma pack(1)
struct CurveNode
{
	double x;
	double y;
	double z;
	double len;
	double realLen;
	double angle;
};
#pragma pack()

wchar_t * AsciiToUnicodeChar(const char * str);
static CItemCurve * GetItemCurveFromView(CSigmaView * pView);
static CItemCurveMerge * GetMergeCurveFromView(CSigmaView * pView);
static CItemCurveEdit * GetItemCurveEdit(CSigmaView * pView);
static CCurveEx * GetCurveEx(CSigmaView * pView);
static double _GetAngle(double x1, double y1, double x2, double y2);
static bool getNodeFromCurve(CCurveEx* pcIn, CurveNode * nodeOut, int nodeIndex);
static CItemCurveEditDeleteMulNodes * GetEditDeleteMulNodesFromView(CSigmaView * pView);
static std::vector<CCurveEx*> ConverToVector(CXy* pXy, CPositionList& positions);
static std::optional<CPoint2D> GetBoundsCenter(const CCurveEx* pCurve);
static POSITION AddTextMarker(CXy* pXy, CLayer* pLayer, double centerX, double centerY, const char* text);
static std::unique_ptr<CActionBackupItem> CloseCurve(CSigmaView* pView, const std::vector<CString>& layers);
static std::unique_ptr<CActionBackupItem> ResolveSnap(CSigmaView* pView, const std::vector<CString>& layers, double gap, double degrees, double snapRadius, double maxExtension);


extern "C" __declspec(dllexport)
int AutoCloseCurve(CSigmaView * pView)
{
	CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	if (pItem == NULL)
		return -1;

	pItem->AutoClose();
	return 1;
}


extern "C" __declspec(dllexport)
int EndCurve(CSigmaView * pView)
{
	CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	if (pItem == NULL)
		return -1;

	pItem->EndCurve();

	return 1;
}

extern "C" __declspec(dllexport)
int DrawNextCurve(CSigmaView * pView)
{
	CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	if (pItem == NULL)
		return -1;

	pItem->NextCurve();

	return 1;
}

extern "C" __declspec(dllexport)
int ChangeCurveTypeForDrawing(CSigmaView * pView, LPCTSTR curveType, HDC hdc)
{
	//CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	CItemCurve* pItem = GetItemCurveFromView(pView);
	if (pItem == NULL)
		return -1;
	CDC * pDC = CDC::FromHandle(hdc);

	if (_strcmpi("line", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_LINE, pDC);
	}
	else if (_strcmpi("arc", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_ARC, pDC);
	}
	else if (_strcmpi("spline", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_SPLINE, pDC);
	}
	else if (_strcmpi("RightAngle", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_ANGLE, pDC);
	}
	else if (_strcmpi("DragSegment", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_DRAG_SEGMENT, pDC);
	}
	else if (_strcmpi("merage", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_MERGE, pDC);
	}
	else if (_strcmpi("drawing", curveType) == 0)
	{
		pItem->SetCurveState(CURVE_STATE_DRAWING, pDC);
	}
	else
	{
		return -1;
	}
	CItemCurveEditDeleteMulNodes* itemEdit = GetEditDeleteMulNodesFromView(pView);
	if (itemEdit != nullptr) {
		itemEdit->GetMarkCurve();
	}

	return 1;

}

extern "C" __declspec(dllexport)
int CancelCurve(CSigmaView * pView)
{
	CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	if (pItem == NULL)
		return -1;

	pItem->OnCancel();
	return 1;
}

extern "C" __declspec(dllexport)
int CurveCancelAll(CSigmaView * pView)
{
	//CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	//CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	//CItemCurveEdit * pItem = GetItemCurveEdit(pView);
	CItem * pItem = pView->m_pDoc->GetItem();
	if (pItem == NULL)
		return -1;

	CItemCurveEdit * pItemSelect = dynamic_cast<CItemCurveEdit *>(pItem);
	if (pItemSelect == NULL)
		return -1;

	pItemSelect->CancelAll();
	return 1;
}

extern "C" __declspec(dllexport)
int ChangeCurveMergeState(CSigmaView * pView)
{
	CItemCurveMerge * pItem = GetMergeCurveFromView(pView);
	if (pItem == NULL)
		return -1;

	pItem->ChangeMergeState();
	return 1;
}

//<2F><><EFBFBD><EFBFBD>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
extern "C" __declspec(dllexport)
int CurveSelected_GetCountOfCoordinate(CSigmaView * pView)
{
	CCurveEx * curve = GetCurveEx(pView);
	if (curve == NULL)
		return -1;

	return curve->num;
}

extern "C" __declspec(dllexport)
bool GetXy_ProjectionIsEmpty(CSigmaView* pView)
{
	CXy* xy = pView->m_pDoc->m_pXy;
	if (xy == NULL)
		return true;

	if (xy->GetProjection().IsEmpty())
	{
		return true;
	}
	else
	{
		return false;
	}
}

extern "C" __declspec(dllexport)
void CurveXY_EXChangeLatLong(CSigmaView * pView, double &x, double &y)
{
	CXy* xy = pView->m_pDoc->m_pXy;
	if (xy == NULL)
		return;

	CProjection proj = xy->m_ExchangeXYZ;
	CExchangeXYZ exyz;
	exyz.SetProjection(&proj);
	exyz.ToBL_D(x, y);
}

extern "C" __declspec(dllexport)
int CurveSelected_GetCurveNode(CSigmaView * pView, int nodeIndex, CurveNode * nodeOut)
{
	if (nodeOut == NULL)
		return -1;

	CCurveEx* pc = GetCurveEx(pView);
	if (pc == NULL)
		return -1;

	if (!getNodeFromCurve(pc, nodeOut, nodeIndex))
		return -1;

	return 1;
}

extern "C" __declspec(dllexport)
int CurveSelected_SaveNodeToCSVFile(CSigmaView * pView, LPCTSTR fileFullPath)
{
	CItemCurveEdit * pItemCurvEdit = GetItemCurveEdit(pView);
	if (pItemCurvEdit == NULL)
		return -1;

	CCurveEx* pc = (CCurveEx*)pView->m_pDoc->GetDraw()->GetAtValue(pItemCurvEdit->GetPos());
	if (pc == NULL)
		return -1;

	FILE* fw = NULL;
	fw = fopen(fileFullPath, "wt");
	if (fw == NULL)
		return -1;

	//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ͷ
	if (fputs("X, Y, Z, L, ʵ<>ʳ<EFBFBD><CAB3><EFBFBD>, <20>Ƕ<EFBFBD>\n", fw) == EOF)
		goto FAIL;

	CurveNode node;
	for (int i = 0; i < pc->num; i++)
	{
		memset(&node, 0, sizeof(CurveNode));
		if (!getNodeFromCurve(pc, &node, i))
			goto FAIL;

		fprintf(fw, "%.6f,%.6f,%.6f,%.6f,%.6f,%.6f\n", node.x, node.y, node.z, node.len, node.realLen, node.angle);
	}

	fclose(fw);
	return 1;
FAIL:
	fclose(fw);
	return -1;
}

extern "C" __declspec(dllexport)
int CurveEditNode_Draw(CSigmaView* pView, HDC hdc)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	CDC *pDC = CDC::FromHandle(hdc);
	pView->SetScreenDC(pDC);

	pItem->Draw(pDC);
	return 1;
}

extern "C" __declspec(dllexport)
void CurveEditNode_EnableMulDelete(CSigmaView* pView, bool enable)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return;

	pItem->EnableMulDelete(enable);
}

extern "C" __declspec(dllexport)
int CurveEditNode_EreaseHandles(CSigmaView* pView, HDC hdc)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	CDC *pDC = CDC::FromHandle(hdc);
	pView->SetScreenDC(pDC);

	pItem->EreaseHandles(pDC);
	return 1;
}

extern "C" __declspec(dllexport)
int CurveEditNode_GetNodeSelected(CSigmaView* pView, int mouseX, int mouseY)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	CPoint pt(mouseX, mouseY);
	return  pItem->HitTestHandle(pt);
}

extern "C" __declspec(dllexport)
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵĽڵ<C4BD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-1
int CurveEditNode_AddNode(CSigmaView* pView, int mouseX, int mouseY)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	CPoint pt(mouseX, mouseY);
	return pItem->AddHandle(pt);
}

extern "C" __declspec(dllexport)
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵĽڵ<C4BD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-1
int CurveEditNode_DeleteNode(CSigmaView* pView, int mouseX, int mouseY)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	if (pItem->GetHandleIndex() < 0)
		return -1;

	pItem->DeleteHandle(pItem->GetHandleIndex());
	return 1;
}

extern "C" __declspec(dllexport)
//-1<><31><EFBFBD><EFBFBD> 1 Ĭ<>Ϲ<EFBFBD><CFB9><EFBFBD> 2 <20><><EFBFBD>ӹ<EFBFBD><D3B9><EFBFBD> 3 <20>ƶ<EFBFBD><C6B6><EFBFBD><EFBFBD><EFBFBD>
int CurveEditNode_GetCursorTpye(CSigmaView* pView, int mouseX, int mouseY)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	CPoint pt(mouseX, mouseY);
	int index = pItem->HitTestHandle(pt);
	if (index < 0)
	{
		if (pItem->IsCanAddHandle(pt))//<2F><><EFBFBD>ƶ<EFBFBD><C6B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD>
		{
			return 2;
		}
		return 1;
	}

	return 3;
}

extern "C" __declspec(dllexport)
int CurveEditNode_GetCountOfNode(CSigmaView * pView)
{
	CItemCurveEditDeleteMulNodes * pItem = GetEditDeleteMulNodesFromView(pView);
	if (pItem == NULL)
		return -1;

	return pItem->GetNumberOfNode();
}
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ
extern "C" __declspec(dllexport)
int DrawerCurveConnect(CSigmaView* pView, LPCTSTR layerName, bool deleteOriginalCurves) {
	CItemSelect * itemSelect = pView->m_pDoc->GetSelectItem();
	if (itemSelect == 0)
		return 0;
	CItemCurveProcess curveProcess(pView->m_pDoc);
	CString strLayerName(layerName);
	return curveProcess.PolygonConnect(itemSelect->m_selection, strLayerName, deleteOriginalCurves);
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߽ڵ<DFBD>
extern "C" __declspec(dllexport)
int Curve_IncreaseDensityNode(CSigmaView * pView, int mode, double step, int rounding)
{
	if (mode != 0 && mode != 1)
		return -1;

	if (rounding != 0 && rounding != 1)
		return -1;

	if (step <= 0)
		return -1;

	if (pView == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	//DrawTooolCurveDensityNode<64><65> <20><>item<65><6D><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪITEM_SELECT <20>ڵ<EFBFBD><DAB5>ô˺<C3B4><CBBA><EFBFBD>ʱ <20><>δ<EFBFBD>л<EFBFBD>Item <20><><EFBFBD>Ե<EFBFBD>ǰ<EFBFBD><C7B0>Item<65><6D><EFBFBD><EFBFBD>CItemSelect
	CItemSelect * itemSelect = pView->m_pDoc->GetSelectItem();
	if (itemSelect == 0)
		return -1;

	CItemCurveProcess curveProcess(pView->m_pDoc);
	if (curveProcess.NodeEncrypt(mode, step, rounding == 1, itemSelect->m_selection))
		return 1;

	return -1;
}

//ȥ<><C8A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľڵ<C4BD> 
extern "C" __declspec(dllexport)
int Curve_Redundance(CSigmaView * pView, double tolerance)
{
	if (tolerance < 0)
		return -1;

	if (pView == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	//DrawTooolCurveDensityNode<64><65> <20><>item<65><6D><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪITEM_SELECT <20>ڵ<EFBFBD><DAB5>ô˺<C3B4><CBBA><EFBFBD>ʱ <20><>δ<EFBFBD>л<EFBFBD>Item <20><><EFBFBD>Ե<EFBFBD>ǰ<EFBFBD><C7B0>Item<65><6D><EFBFBD><EFBFBD>CItemSelect
	CItemSelect * itemSelect = pView->m_pDoc->GetSelectItem();
	if (itemSelect == 0)
		return -1;

	CItemCurveProcess curveProcess(pView->m_pDoc);
	if (curveProcess.ToRedundant(tolerance, itemSelect->m_selection))
		return 1;

	return -1;
}


extern "C" __declspec(dllexport)
int Curve_ArcToCurve(CSigmaView * pView, double step)
{
	CItemSelect * itemSelect = pView->m_pDoc->GetSelectItem();
	if (itemSelect == 0)
		return -1;

	CItemCurveProcess curveProcess(pView->m_pDoc);
	int num = curveProcess.ArcToCurve(itemSelect->m_selection, step);
	if (num <= 0)
	{
		return -1;
	}

	return 1;
}

extern "C" __declspec(dllexport)
int Curve_Smooth(CSigmaView * pView, int mode, double step)
{
	if (mode != 0 && mode != 1)
		return -1;

	if (pView == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	CItemSelect * itemSelect = pView->m_pDoc->GetSelectItem();
	if (itemSelect == 0)
		return -1;

	CItemCurveProcess curveProcess(pView->m_pDoc);
	if (curveProcess.SmoothCurve(mode, step, itemSelect->m_selection))
		return 1;

	return -1;
}
/// <20>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
extern "C" __declspec(dllexport)
int Curve_AutoJoin(CSigmaView * pView, double maxError, bool onlySameName) {
	CItemCurveProcess itemCurveProcess(pView->m_pDoc);
	return itemCurveProcess.AutoLinkCurve(maxError, onlySameName);
}

extern "C" __declspec(dllexport)
int Curve_SetName(CSigmaView * pView, LPCTSTR curveName)
{
	if (pView == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	//DrawTooolCurveDensityNode<64><65> <20><>item<65><6D><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪITEM_SELECT <20>ڵ<EFBFBD><DAB5>ô˺<C3B4><CBBA><EFBFBD>ʱ <20><>ǰ<EFBFBD><C7B0>Item<65><6D><EFBFBD><EFBFBD>CItemSelect
	CItemSelect * itemSelect = pView->m_pDoc->GetLastSelectItem();
	if (itemSelect == 0)
		return -1;

	CItemCurveProcess curveProcess(pView->m_pDoc);
	curveProcess.SetCurveName(curveName, itemSelect->m_selection);
	return 1;
}

extern "C" __declspec(dllexport)
int  Curve_GetCurvesOfEmptyName(CSigmaView * pView, BufferAgency * bufferOut)
{
	bufferOut->buffer = nullptr;
	bufferOut->len = 0;

	if (pView == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	CItemSelect * itemSelect = pView->m_pDoc->GetSelectItem();
	if (itemSelect == 0)
		return -1;

	CItemCurveProcess curveProcess(pView->m_pDoc);
	std::string curvesStr = curveProcess.FindNameIsNull(itemSelect->m_selection);
	if (curvesStr.empty())
		return -1;

	bufferOut->buffer = AsciiToUnicodeChar(curvesStr.c_str());
	bufferOut->len = (int)wcslen(bufferOut->buffer);

	return 1;
	
}

/**
 * <EFBFBD><EFBFBD>ȡ<EFBFBD>ǶȺ;<EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView
 * \return <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻<EFBFBD><EFBFBD><EFBFBD> "," <EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ǽǶȣ<EFBFBD><EFBFBD>ڶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
extern "C" __declspec(dllexport)
bool GetCurveAngleAndDistance(CSigmaView* pView, double *angle, double *distance)
{
	if (pView == 0)
		return false;

	if (pView->m_pDoc == 0)
		return false;

	CItem * pItem = pView->GetItem();
	if (pItem == NULL)
		return false;

	if (CItemCurve* pItemCurve = dynamic_cast<CItemCurve*>(pItem))
	{
		return pItemCurve->GetAngleAndDistance(*angle, *distance);
	}

	return false;
}

static std::vector<CCurveEx*> FilterCurves(CXy* pXy, const CString& layers)
{
	assert(pXy != nullptr);

	CXyElementFilter filter;

	filter.addType(DOUBLEFOX_CURVE);

	std::vector<CString> vec = SplitString(layers, _T(","));

	for (const auto& layer : vec)
	{
		filter.addLayer(layer, false);
	}

	CPositionList select;
	pXy->GetElement(filter, select);

	return ConverToVector(pXy, select);
}

/**
 * <EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD>ɾ<EFBFBD><EFBFBD><EFBFBD>ͻָ<EFBFBD>̫<EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֵģ<EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>漸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⹦<EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ط<EFBFBD>ʹ<EFBFBD>ÿ<EFBFBD><EFBFBD>ܳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>벻<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView
 * \param pItem
 * \param layerName
 */
static void ClearLayer(CSigmaView* pView, CActionComboItem& pItem, const CString& layerName)
{
	CXy* pXy = pView->m_pDoc->m_pXy;

	CLayer* pLayer = pXy->FindLayer(layerName);
	if (pLayer == nullptr)
	{
		return;
	}

	CPtrList layers;
	layers.AddTail(pLayer);

	NBase::CPositionList select;
	int n = pXy->GetElement(layerName, select, FALSE, FALSE);

	pItem.AddAction(new CActionLayerDeleteItem(pView->m_pDoc, select, layers));

	CLayer* pCurrentLayer = pXy->GetCurrentLayer();
	if (layers.Find(pCurrentLayer))
	{
		if (pXy->GetClassList()->GetLayerCount() == 0)
		{
			if (pXy->GetClassList()->GetCount() == 0)
				pXy->InitLayerClass();
			else
				pXy->GetClassList()->GetHead()->FindAdd("0");
		}
		pXy->SetCurrentLayer(pXy->GetClassList()->GetHead()->GetHead());
	}
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD>պϼ<EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView
 * \param layers <EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD>
 */
extern "C" __declspec(dllexport)
void MineralRightsUnclosedDetection(CSigmaView* pView, const LPCTSTR layers)
{
	if (pView == nullptr || pView->m_pDoc == nullptr || pView->m_pDoc->m_pXy == nullptr)
	{
		TRACE("pView <20><><EFBFBD><EFBFBD>Ϊ nullptr\n");
		return;
	}

	if (pView->m_pDoc == nullptr || pView->m_pDoc->m_pXy == nullptr)
	{
		TRACE("ͼ<EFBFBD><EFBFBD><EFBFBD>쳣\n");
		return;
	}

	CXy* pXy = pView->m_pDoc->m_pXy;

	std::unique_ptr<CActionComboItem> pItem = std::make_unique<CActionComboItem>(pView->m_pDoc, 0);

	const CString layerName = _T("δ<EFBFBD>պ<EFBFBD>");

	ClearLayer(pView, *pItem, layerName);

	std::vector<CCurveEx*> curves = FilterCurves(pXy, layers);

	BoundaryDetection boundaryDetection;
	auto closeResult = boundaryDetection.CheckClosure(curves);
	auto* pUnclosedLayer = pXy->FindAddLayer(layerName);

	CPositionList positions;
	for (auto& pair : closeResult)
	{
		if (!pair.isClosed)
		{
			COne* pOne = new COne();

			double width = 10.0;
			double height = 26.0;

			CCurveEx* pCurve = pair.pCurve;

			double startX = pCurve->x[0];
			double startY = pCurve->y[0];

			int lastIdx = pCurve->num - 1;
			double endX = pCurve->x[lastIdx];
			double endY = pCurve->y[lastIdx];

			double midX = (startX + endX) / 2;
			double midY = (startY + endY) / 2;

			double textX = midX - (width / 2);   // <20><><EFBFBD><EFBFBD> X λ<><CEBB>
			double textY = midY + (height / 2);  // <20><><EFBFBD><EFBFBD> Y λ<><CEBB>

			POSITION pos = AddTextMarker(pXy, pUnclosedLayer, midX, midY, "-|-");
			positions.AddTail(pos);
		}
	}

	if (positions.GetCount() > 0)
	{
		pItem->AddAction(new CActionAddItem(pView->m_pDoc, IDS_STRING_ACTION_ADD, positions));
	}

	if (pItem->GetCount() > 0)
	{
		pView->m_pDoc->SetActionItem(pItem.release());
	}
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ཻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView
 * \param layers <EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD>
 */
extern "C" __declspec(dllexport)
void MineralRightsOverlapDetection(CSigmaView* pView, const LPCTSTR layers)
{
	if (pView == nullptr || pView->m_pDoc == nullptr || pView->m_pDoc->m_pXy == nullptr)
	{
		TRACE("pView <20><><EFBFBD><EFBFBD>Ϊ nullptr\n");
		return;
	}

	if (pView->m_pDoc == nullptr || pView->m_pDoc->m_pXy == nullptr)
	{
		TRACE("ͼ<EFBFBD><EFBFBD><EFBFBD>쳣\n");
		return;
	}

	CXy* pXy = pView->m_pDoc->m_pXy;

	std::unique_ptr<CActionComboItem> pItem = std::make_unique<CActionComboItem>(pView->m_pDoc, 0);

	const CString layerName = _T("<EFBFBD>ཻ");

	ClearLayer(pView, *pItem, layerName);

	std::vector<CCurveEx*> curves = FilterCurves(pXy, layers);

	OverlapDetection overlapDetection;
	auto overlaps = overlapDetection.DetectOverlap(curves);
	auto* pOverlapLayer = pXy->FindAddLayer(layerName);

	CPositionList positions;
	for (auto&& overlap : overlaps)
	{
		auto centerPoint = GetBoundsCenter(overlap.pArea.get());
		if (centerPoint)
		{
			POSITION pos = AddTextMarker(pXy, pOverlapLayer, centerPoint->x0, centerPoint->y0, "<EFBFBD><EFBFBD>|<7C><>");
			positions.AddTail(pos);
		}
	}

	if (positions.GetCount() > 0)
	{
		pItem->AddAction(new CActionAddItem(pView->m_pDoc, IDS_STRING_ACTION_ADD, positions));
	}

	if (pItem->GetCount() > 0)
	{
		pView->m_pDoc->SetActionItem(pItem.release());
	}
}

/**
 * <EFBFBD><EFBFBD><EFBFBD>߷<EFBFBD>϶<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView
 * \param layers Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD>
 */
extern "C" __declspec(dllexport)
void MineralRightsGapDetection(CSigmaView* pView, const LPCTSTR layers, double gap)
{	
	if (pView == nullptr || pView->m_pDoc == nullptr || pView->m_pDoc->m_pXy == nullptr)
	{
		TRACE("pView <20><><EFBFBD><EFBFBD>Ϊ nullptr\n");
		return;
	}

	if (pView->m_pDoc == nullptr || pView->m_pDoc->m_pXy == nullptr)
	{
		TRACE("ͼ<EFBFBD><EFBFBD><EFBFBD>쳣\n");
		return;
	}

	CXy* pXy = pView->m_pDoc->m_pXy;

	std::unique_ptr<CActionComboItem> pItem = std::make_unique<CActionComboItem>(pView->m_pDoc, 0);

	const CString layerName = _T("<EFBFBD><EFBFBD>϶");

	ClearLayer(pView, *pItem, layerName);

	std::vector<CCurveEx*> curves = FilterCurves(pXy, layers);

	GapDetection gapDetection;
	gapDetection.SetGapValue(gap);
	auto gaps = gapDetection.DetectGaps(curves);
	auto* pGapLayer = pXy->FindAddLayer(layerName);

	CPositionList positions;
	for (auto&& gap : gaps)
	{
		auto centerPoint = GetBoundsCenter(gap.pArea.get());
		if (centerPoint)
		{
			POSITION pos = AddTextMarker(pXy, pGapLayer, centerPoint->x0, centerPoint->y0, "<EFBFBD><EFBFBD>|<7C><>");
			positions.AddTail(pos);
		}
	}

	if (positions.GetCount() > 0)
	{
		pItem->AddAction(new CActionAddItem(pView->m_pDoc, IDS_STRING_ACTION_ADD, positions));
	}

	if (pItem->GetCount() > 0)
	{
		pView->m_pDoc->SetActionItem(pItem.release());
	}
}

/**
 * <EFBFBD><EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD>޸<EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD>պϡ<EFBFBD>
 * 
 * \param pView
 * \param layers
 */
extern "C" __declspec(dllexport)
void MineralRightsAutoFix(CSigmaView* pView, const LPCTSTR layers, double gap, double degress, double snapRadius, double maxExtension)
{
	CString layersStr(layers);
	std::vector<CString> layersVec = SplitString(layersStr, _T(","));

	std::unique_ptr<CActionBackupItem> pItem1 = CloseCurve(pView, layersVec);
	std::unique_ptr<CActionBackupItem> pItem2 = ResolveSnap(pView, layersVec, gap, degress, snapRadius, maxExtension);

	std::unique_ptr<CActionComboItem> pItem = std::make_unique<CActionComboItem>();

	if (pItem1->GetCount() > 0)
	{
		pItem->AddAction(pItem1.release());
	}

	if (pItem2->GetCount() > 0)
	{
		pItem->AddAction(pItem2.release());
	}

	if (pItem->GetCount() > 0)
	{
		pView->m_pDoc->SetActionItem(pItem.release());
	}
}

static void GetClosedCurves(CXy& xy, CPositionList& selection, CPositionList& closedCurves)
{
	POSITION pos = selection.GetHeadPosition();
	while (pos != nullptr)
	{
		POSITION prev = pos;
		POSITION pt = selection.GetNext(pos);
		COne* pOne = xy.GetAt(pt);

		if (pOne != nullptr && pOne->GetType() == DOUBLEFOX_CURVE)
		{
			CCurveEx* pCurve = pOne->GetValueSafe<CCurveEx>();
			if (pCurve->IsClosed())
			{
				closedCurves.AddTail(pt);
			}
		}
	}
}

static void GroupCurves(CXy& xy,
	CPositionList& curves,
	std::vector<CCurveEx*>& left,
	std::vector<CCurveEx*>& right)
{
    int half = curves.GetCount() / 2;
    POSITION pos = curves.GetHeadPosition();

    while (pos != nullptr) {
        POSITION pt = curves.GetNext(pos);
        COne* pOne = xy.GetAt(pt);
        assert(pOne != nullptr);

        CCurveEx* pCurve = pOne->GetValueSafe<CCurveEx>();
        if (left.size() < half) {
            left.push_back(pCurve);
        } else {
            right.push_back(pCurve);
        }
    }
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView		pView
 * \param booleanOp	<EFBFBD>ϲ<EFBFBD><EFBFBD><EFBFBD>ʽ
 * 0:	// Difference
 * 1:	// Intersect
 * 2:	// Union
 * 3:	// XOR 
 * \return 
 */
extern "C" __declspec(dllexport)
bool PolygonBooleanOperation(CSigmaView* pView, int booleanOp)
{
	if (pView == nullptr)
	{
		TRACE("pView <20><><EFBFBD><EFBFBD>Ϊ nullptr\n");
		return false;
	}

	if (booleanOp < 0 || booleanOp > 3)
	{
		TRACE("booleanOp <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> [0, 3] ֮<><D6AE>\n");
		return false;
	}

	auto* pItem = pView->GetItem();
	if (pItem == nullptr)
	{
		return false;
	}

	CItemSelect * pItemSelect = dynamic_cast<CItemSelect *>(pItem);
	if (pItemSelect == nullptr)
	{
		TRACE("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\n");
		return false;
	}

	CXy* pXy = pView->m_pDoc->m_pXy;

	CPositionList& selection = pItemSelect->m_selection; 
	if (selection.GetCount() < 2)
	{
		return false;
	}

	CPositionList closedCurves;
	GetClosedCurves(*pXy, selection, closedCurves);

	if (closedCurves.GetCount() < 2)
	{
		return true;
	}

	// <20><>ѡ<EFBFBD><D1A1><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD>Ƴ<EFBFBD><C6B3>պ<EFBFBD><D5BA><EFBFBD><EFBFBD>ߣ<EFBFBD><DFA3><EFBFBD>Щ<EFBFBD><D0A9><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD>Ƴ<EFBFBD>
	CListRemoveRange(selection, closedCurves);

	std::vector<CCurveEx*> left;
	std::vector<CCurveEx*> right;
	GroupCurves(*pXy, closedCurves, left, right);

	CPositionList plAdd;
	BooleanOp op = static_cast<BooleanOp>(booleanOp);
	auto newCurves =  PolygonCombiner::Execute(left, right, op);
	for (auto& curve : newCurves)
	{
		POSITION pos = pXy->AddElement(curve.release(), DOUBLEFOX_CURVE);
		plAdd.AddTail(pos);
	}

	CPositionList plDel;
	CListAddRange(plDel, closedCurves);
	auto pAction = std::make_unique<CActionListItem>(pView->m_pDoc, 0);
	pAction->AddDeleteItem(plDel);
	pAction->AddAddItem(plAdd);
	pView->m_pDoc->SetActionItem(pAction.release());

	pView->Notify("redraw");

	return true;
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽΪ<EFBFBD>ϲ<EFBFBD>ģʽ
 * 
 * \param mergeIdea <EFBFBD>ϲ<EFBFBD><EFBFBD><EFBFBD>ʽ
 * 0:	//And
 * 1:	//Or
 * 2:	//Xor
 * 3:	//Cross
 * \param isDelete <EFBFBD>Ƿ<EFBFBD>ɾ<EFBFBD><EFBFBD>ԭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * \return <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> CItemLinkCurve <EFBFBD><EFBFBD><EFBFBD>߲<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󣬷<EFBFBD><EFBFBD><EFBFBD> false
 */
extern "C" __declspec(dllexport)
bool SetLinkCurveMergeMode(CSigmaView * pView, int mergeIdea, bool isDelete)
{
	if (pView == nullptr)
	{
		return false;
	}

	if (mergeIdea < 0 || mergeIdea > 4)
	{
		return false;
	}

	if (auto* pLinkCurve = dynamic_cast<CItemLinkCurve*>(pView->GetItem()))
	{
		pLinkCurve->m_nMode = LINK_CURVE_MERGE;
		pLinkCurve->SetMergeIdea(mergeIdea);
		pLinkCurve->SetDelete(isDelete);
	}

	return true;
}

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ
 */
enum class LinkCurveMode
{
	And,
	Or,
	Xor,
	Cross,
};

static std::unique_ptr<CCurveEx> CCurveFromXml(const std::string& xml)
{
	TiXmlDocument doc;
	doc.Parse(xml.c_str());
	if (doc.Error())
	{
		throw std::runtime_error("<EFBFBD><EFBFBD><EFBFBD>ǺϷ<EFBFBD><EFBFBD><EFBFBD> xml");
	}

	const char* Pline = "Pline";
	const char* Point = "Point";
	const char* X = "X";
	const char* Y = "Y";
	const char* Z = "Z";

	TiXmlElement* plineElement = doc.FirstChildElement(Pline);
	if (plineElement == nullptr)
	{
		throw std::runtime_error("xml <20><>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
	}

	std::vector<CPoint3D> points;

	for (TiXmlElement* pointElement = plineElement->FirstChildElement(Point); pointElement != nullptr; pointElement = pointElement->NextSiblingElement(Point))
	{
		TiXmlElement* xElement = pointElement->FirstChildElement(X);
		TiXmlElement* yElement = pointElement->FirstChildElement(Y);
		TiXmlElement* zElement = pointElement->FirstChildElement(Z);

		if (xElement == nullptr || yElement == nullptr || zElement == nullptr)
		{
			throw std::runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>ȱ<EFBFBD><EFBFBD> x y z <20>е<EFBFBD>Ԫ<EFBFBD><D4AA>");
		}

		const char* xText = xElement->GetText();
		const char* yText = yElement->GetText();
		const char* zText = zElement->GetText();

		if (xText == nullptr || yText == nullptr || zText == nullptr)
		{
			throw std::runtime_error("<EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> x y z <20><><EFBFBD>е<EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
		}

		try
		{
			points.emplace_back(std::stod(xText), std::stod(yText), std::stod(zText));
		}
		catch (const std::invalid_argument&)
		{
			throw std::runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD>ǺϷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
		}
	}

	auto pCurve = std::make_unique<CCurveEx>();
	pCurve->Create(points.size());

	for (size_t i = 0; i < points.size(); i++)
	{
		pCurve->x[i] = points[i].x0;
		pCurve->y[i] = points[i].y0;
		pCurve->z[i] = points[i].z0;
		TRACE("%lf, %lf, %lf\n", pCurve->x[i], pCurve->y[i], pCurve->x[i]);
	}

	return pCurve;
}

static std::string CCurvesToXml(const std::vector<std::unique_ptr<CCurveEx>>& curves, const std::string& message)
{
	TiXmlDocument doc;

	std::unique_ptr<TiXmlElement> root = std::make_unique<TiXmlElement>("Polyline");

	std::unique_ptr<TiXmlElement> messageElement = std::make_unique<TiXmlElement>("ErrorMessage");
	messageElement->LinkEndChild(new TiXmlText(message.c_str()));
	root->LinkEndChild(messageElement.release());

	const char* Pline = "Pline";
	const char* Point = "Point";
	const char* X = "X";
	const char* Y = "Y";
	const char* Z = "Z";

	for (const auto& curve : curves)
	{
		std::unique_ptr<TiXmlElement> plineElement = std::make_unique<TiXmlElement>(Pline);

		for (int i = 0; i < curve->num; i++)
		{
			std::unique_ptr<TiXmlElement> pointElement = std::make_unique<TiXmlElement>(Point);

			std::unique_ptr<TiXmlElement> xElement = std::make_unique<TiXmlElement>(X);
			xElement->LinkEndChild(new TiXmlText(std::to_string(curve->x[i]).c_str()));
			pointElement->LinkEndChild(xElement.release());

			std::unique_ptr<TiXmlElement> yElement = std::make_unique<TiXmlElement>(Y);
			yElement->LinkEndChild(new TiXmlText(std::to_string(curve->y[i]).c_str()));
			pointElement->LinkEndChild(yElement.release());

			std::unique_ptr<TiXmlElement> zElement = std::make_unique<TiXmlElement>(Z);
			zElement->LinkEndChild(new TiXmlText(std::to_string(curve->z[i]).c_str()));
			pointElement->LinkEndChild(zElement.release());

			plineElement->LinkEndChild(pointElement.release());
		}

		root->LinkEndChild(plineElement.release());
	}

	doc.LinkEndChild(root.release());

	TiXmlPrinter printer;
	doc.Accept(&printer);
	return std::string(printer.CStr());
}

static std::vector<std::unique_ptr<CCurveEx>> MergeCurveImpl(const CCurveEx& curve1, const CCurveEx& curve2, LinkCurveMode mode)
{
	CCurveAnd curveAnd;
	curveAnd.SetCurve(const_cast<CCurveEx*>(&curve1), const_cast<CCurveEx*>(&curve2));

	switch (mode)
	{
	case LinkCurveMode::And:
		curveAnd.GetAndCurve();
		break;

	case LinkCurveMode::Or:
		curveAnd.GetOrCurve();
		break;

	case LinkCurveMode::Xor:
		curveAnd.GetXorCurve();
		break;

	case LinkCurveMode::Cross:
		curveAnd.GetCrossCurve();
		break;
	}

	std::vector<std::unique_ptr<CCurveEx>> result;

	for (POSITION pos = curveAnd.m_ptrCurveList.GetHeadPosition(); pos != nullptr; curveAnd.m_ptrCurveList.GetNext(pos))
	{
		CCurveEx* pCurve = reinterpret_cast<CCurveEx*>(curveAnd.m_ptrCurveList.GetAt(pos));
		result.emplace_back(pCurve);
	}

	return result;
}

static LinkCurveMode LinkCurveModeFromString(const std::string& modeString)
{
	static std::map<std::string, LinkCurveMode> map
	{
		{ "And", LinkCurveMode::And },
		{ "Or", LinkCurveMode::Or },
		{ "Xor", LinkCurveMode::Xor },
		{ "Cross", LinkCurveMode::Cross },
	};

	if (map.find(modeString) != map.end())
	{
		return map.at(modeString);
	}

	throw std::runtime_error("error mode: " + modeString + ", only support and or xor cross");
}

static BSTR ConvertMBSToBSTR(const std::string& str)
{
	int wslen = ::MultiByteToWideChar(CP_ACP, 0 /* no flags */, str.data(), str.length(), nullptr, 0);

	BSTR wsdata = ::SysAllocStringLen(nullptr, wslen);
	::MultiByteToWideChar(CP_ACP, 0 /* no flags */, str.data(), str.length(), wsdata, wslen);
	return wsdata;
}

/**
 * <EFBFBD><EFBFBD><EFBFBD>ߺϲ<EFBFBD><EFBFBD>ӿ<EFBFBD>
 * 
 * \param curve1 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>1
 * \param curve2 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>2
 * \param mode <EFBFBD><EFBFBD><EFBFBD>ߺϲ<EFBFBD>ģʽ And Or Xor Cross
 * \return
 */
extern "C" __declspec(dllexport)
BSTR MergeCurve(wchar_t* curve1, wchar_t* curve2, wchar_t* mode)
{
	std::string curve1String = WStringToString(curve1);
	std::string curve2String = WStringToString(curve2);
	std::string modeString = WStringToString(mode);

	try
	{
		LinkCurveMode linkMode = LinkCurveModeFromString(modeString);
		std::unique_ptr<CCurveEx> curve1 = CCurveFromXml(curve1String);
		std::unique_ptr<CCurveEx> curve2 = CCurveFromXml(curve2String);

		std::vector<std::unique_ptr<CCurveEx>> curves = MergeCurveImpl(*curve1, *curve2, linkMode);

		std::string result = CCurvesToXml(curves, "");
		return ConvertMBSToBSTR(result);
	}
	catch (std::runtime_error& e)
	{
		std::string errorMessage = CCurvesToXml({}, e.what());
		return ConvertMBSToBSTR(errorMessage);
	}
}

static CItemCurveEditDeleteMulNodes * GetEditDeleteMulNodesFromView(CSigmaView * pView)
{
	if (pView == NULL)
		return 0;

	CItem * pItem = pView->GetItem();
	if (pItem == NULL)
		return 0;

	CItemCurveEditDeleteMulNodes * itemPoint = dynamic_cast<CItemCurveEditDeleteMulNodes *>(pItem);
	if (itemPoint == NULL)
		return 0;

	return itemPoint;
}

static CItemCurveMerge * GetMergeCurveFromView(CSigmaView * pView)
{
	if (pView == NULL)
		return 0;

	CItem * pItem = pView->GetItem();
	if (pItem == NULL)
		return 0;

	CItemCurveMerge * itemPoint = dynamic_cast<CItemCurveMerge *>(pItem);
	if (itemPoint == NULL)
		return 0;

	return itemPoint;
}

static CItemCurve * GetItemCurveFromView(CSigmaView * pView)
{
	if (pView == NULL)
		return 0;

	CItem * pItem = pView->GetItem();
	if (pItem == NULL)
		return 0;

	CItemCurve * itemPoint = dynamic_cast<CItemCurve *>(pItem);
	if (itemPoint == NULL)
		return 0;

	return itemPoint;
}

static CItemCurveEdit * GetItemCurveEdit(CSigmaView * pView)
{
	if (pView == NULL)
		return NULL;

	if (pView->m_pDoc == NULL)
		return NULL;

	CItem * pItem = pView->m_pDoc->GetItem();
	if (pItem == NULL)
		return NULL;

	CItemSelect * pItemSelect = dynamic_cast<CItemSelect *>(pItem);
	if (pItemSelect == NULL)
		return NULL;
	pItemSelect->InitItemForGrid();

	CItem * pItemGraph = pItemSelect->GetItemForGrid();
	if (pItemGraph == NULL)
		return NULL;


	//CItemCurveEdit* pItemCurve = dynamic_cast<CItemCurveEdit *>(pItemGraph);
	CItemCurveEdit* pItemCurve = (CItemCurveEdit *)(pItemGraph);

	return pItemCurve;
}

static CCurveEx * GetCurveEx(CSigmaView * pView)
{
	if (pView == NULL)
		return NULL;

	if (pView->m_pDoc == NULL)
		return NULL;

	CItem * pItem = pView->m_pDoc->GetItem();
	if (pItem == NULL)
		return NULL;

	CItemSelect * pItemSelect = dynamic_cast<CItemSelect *>(pItem);
	if (pItemSelect == NULL)
		return NULL;
	if (pItemSelect->m_selection.IsEmpty())
		return NULL;

	POSITION pos = pItemSelect->m_selection.GetHead();
	CXy * xy = pView->m_pDoc->m_pXy;
	if (xy == NULL)
		return NULL;

	COne * pOne = xy->GetAt(pos);
	if (pOne == NULL)
		return NULL;

	if (pOne->GetType() != DOUBLEFOX_CURVE)
		return NULL;


	//CItemCurveEdit* pItemCurve = dynamic_cast<CItemCurveEdit *>(pItemGraph);
	CCurveEx * curve = (CCurveEx *)(xy->GetAtValue(pos));
	return curve;
}
/*
	CItemSelect * pItemSelect = dynamic_cast<CItemSelect *>(pItem);
	if (pItemSelect == NULL)
		return NULL;

	if (pItemSelect->m_selection.GetSize() == 0)
		return NULL;
	POSITION pos = pItemSelect->m_selection.GetHead();

	CXy * xy = pView->m_pDoc->m_pXy;
	if (xy == 0)
		return NULL;

	COne * pOne = xy->GetAt(pos);
	pOne->GetType();

*/

static bool getNodeFromCurve(CCurveEx* pcIn, CurveNode * nodeOut, int nodeIndex)
{
	if (pcIn == NULL || nodeOut == NULL)
		return false;

	if (nodeIndex < 0 || nodeIndex >= pcIn->num)
		return false;

	nodeOut->x = pcIn->x[nodeIndex];
	nodeOut->y = pcIn->y[nodeIndex];
	nodeOut->z = pcIn->z[nodeIndex];
	nodeOut->len = pcIn->l[nodeIndex];
	if (nodeIndex == 0)
		nodeOut->realLen = 0;
	else
		nodeOut->realLen = AfxGetPublicFunction()->Distance(pcIn->x[nodeIndex - 1], pcIn->y[nodeIndex - 1], pcIn->x[nodeIndex], pcIn->y[nodeIndex]);

	if (nodeIndex == 0)
		nodeOut->angle = 0;
	else
		nodeOut->angle = ::_GetAngle(pcIn->x[nodeIndex - 1], pcIn->y[nodeIndex - 1], pcIn->x[nodeIndex], pcIn->y[nodeIndex]);


	return true;
}

static double _GetAngle(double x1, double y1, double x2, double y2)
{
	double dx = x2 - x1;
	double dy = y2 - y1;
	return atan2(dy, dx)*RHO;
}

static std::vector<CCurveEx*> ConverToVector(CXy* pXy, CPositionList& positions)
{
	std::vector<CCurveEx*> result;
	result.reserve(positions.GetCount());

	for (POSITION pos = positions.GetHeadPosition(); pos != nullptr; positions.GetNext(pos))
	{
		POSITION pt = positions.GetAt(pos);
		COne* pOne = pXy->GetAt(pt);

		if (pOne->GetType() == DOUBLEFOX_CURVE)
		{
			result.push_back(pOne->GetValueSafe<CCurveEx>());
		}
	}

	return result;
}

static std::optional<CPoint2D> GetBoundsCenter(const CCurveEx* pCurve)
{
	if (pCurve == nullptr || pCurve->num < 2)
	{
		return std::nullopt;
	}

	auto xRange = std::minmax_element(pCurve->x, pCurve->x + pCurve->num);
	auto yRange = std::minmax_element(pCurve->y, pCurve->y + pCurve->num);

	double centerX = (*xRange.first + *xRange.second) / 2.0;
    double centerY = (*yRange.first + *yRange.second) / 2.0;

	return CPoint2D { centerX, centerY };
}

static POSITION AddTextMarker(CXy* pXy, CLayer* pLayer, double centerX, double centerY, const char* text)
{
    // <20><><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD><EFBFBD>߼<EFBFBD><DFBC>еijߴ<C4B3><DFB4><EFBFBD><EFBFBD><EFBFBD>
    double width = 10.0;
    double height = 26.0;
    
    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͻ<EFBFBD>λ<EFBFBD><CEBB> (ԭ<><D4AD><EFBFBD>߼<EFBFBD>)
    double textX = centerX - (width / 2.0);
    double textY = centerY + (height / 2.0);

    std::unique_ptr<CText> pText = CTextBuilder()
        .FontLocation(textX, textY)
        .FontSize(width, height)
        .Text(text)
        .Build();

    COne* pOne = new COne();
    pOne->SetValueSafe(pText.release());
    pOne->SetLayer(pLayer);
    return pXy->AddTailOne(pOne);
}

/**
 * <EFBFBD>պ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * 
 * \param pView
 * \param layers
 */
static std::unique_ptr<CActionBackupItem> CloseCurve(CSigmaView* pView, const std::vector<CString>& layers)
{
	CXy* pXy = pView->m_pDoc->m_pXy;

	CXyElementFilter filter;

	for (const auto& layer : layers)
	{
		filter.addLayer(layer, false);
	}
	
	filter.addType(DOUBLEFOX_CURVE);

	CPositionList select;
	pXy->GetElement(filter, select);

	std::unique_ptr<CActionBackupItem> pItem = std::make_unique<CActionBackupItem>(pView->m_pDoc, 0);

	for (POSITION pos = select.GetHeadPosition(); pos != nullptr; select.GetNext(pos))
	{
		POSITION pt = select.GetAt(pos);
		COne* pOne = pXy->GetAt(pt);

		CCurveEx* pCurve = pOne->GetValueSafe<CCurveEx>();
		if (!pCurve->IsClosed())
		{
			pItem->Backup(pOne);

			std::unique_ptr<CCurveEx> pClosedCurve(CreateCloseCurve(pCurve));
			*pCurve = *pClosedCurve;
		}
	}

	pItem->BackupNew();
	return pItem;
}

static std::unique_ptr<CActionBackupItem> ResolveSnap(CSigmaView* pView, const std::vector<CString>& layers, double gap, double degrees, double snapRadius, double maxExtension)
{
	CXy* pXy = pView->m_pDoc->m_pXy;

	CXyElementFilter filter;

	filter.addType(DOUBLEFOX_CURVE);

	for (const auto& layer : layers)
	{
		filter.addLayer(layer, false);
	}

	CPositionList select;
	pXy->GetElement(filter, select);

	double delta = gap;

	std::vector<CCurveEx*> curves;
	curves.reserve(select.GetCount());

	std::unique_ptr<CActionBackupItem> pItem = std::make_unique<CActionBackupItem>(pView->m_pDoc, 0);

	for (POSITION pos = select.GetHeadPosition(); pos != nullptr; select.GetNext(pos))
	{
		POSITION pt = select.GetAt(pos);
		COne* pOne = pXy->GetAt(pt);

		pItem->Backup(pOne);

		CCurveEx* pCurve = pOne->GetValueSafe<CCurveEx>();
		curves.push_back(pCurve);
	}

	PolygonSnapper::Snap(curves, gap, degrees, snapRadius, maxExtension);

	pItem->BackupNew();
	return pItem;
}