#include "stdafx.h"
#include <stack>
#include <random>
#include "DrawOperator/XyIO.h"
#include "TinyXml/tinyxml.h"
#include "ActionDeleteItem.h"
#include "DrawOperator/Net.h"
#include "DrawOperator/LibraryManager.h"
#include "DrawOperator\FileUtility.h"
#include "DrawOperator/unordered_dense.h"
#include "DrawOperator\MergePDFFile.h"
#include "ActionAddItem.h"
#include "Util.h"
#include "Legend.h"
#include "UndecidedZone.h"
#include "SigmaView.h"


/**
 * 生成有利区，zMin 和 zMax 是闭区间
 * 
 * \param pXy		图件
 * \param layerName	指定的图层名
 * \param zMin		最小 z 值
 * \param zMax		最大 z 值
 * \param plAdd		新增的图元 POSITION
 * \return 
 */
int CreateFavorableAreaImpl(CXy* pSourceXy, CXy* pTargetXy, const CString& layerName, double zMin, double zMax, CPositionList& plAdd)
{
	if (pSourceXy == nullptr)
	{
		TRACE("pXy 不能为 nullptr\n");
		return 0;
	}

	if (zMin >= zMax)
	{
		TRACE("zMin 不能大于 zMax\n");
		return 0;
	}

	CPositionList select;
	pSourceXy->GetElement(DOUBLEFOX_MESH, select);
	if (select.IsEmpty())
	{
		return 0;
	}

	CLayer* pLayer = pTargetXy->FindAddLayer(layerName);
	if (pLayer == nullptr)
	{
		TRACE("查找或创建图层\"%s\"失败", layerName);
		return 0;
	}

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

		CMesh* pMesh = pOne->GetValueSafe<CMesh>();
		UndecidedZone undecidedZone(pMesh);
		std::vector<std::unique_ptr<CCurveEx>> curves = undecidedZone.ComputeRegions(zMin, zMax);

		for (auto& curve : curves)
		{
			auto pOne = std::make_unique<COne>();
			pOne->SetLayer(pLayer);
			pOne->SetValueSafe(std::move(curve.release()));
			pOne->SetColor(RGB(0, 0, 0));

			POSITION posAdd = pTargetXy->AddTailOne(pOne.release());
			plAdd.AddTail(posAdd);
		}
	}

	return plAdd.GetCount();
}

extern "C" __declspec(dllexport)
int XyCreateFavorableArea(CXy* pSourceXy, CXy* pTargetXy, const LPCTSTR layerName, double zMin, double zMax)
{
	if (pSourceXy == nullptr)
	{
		TRACE("pSourceXy 不能为 nullptr\n");
		return 0;
	}

	if (pTargetXy == nullptr)
	{
		TRACE("pTargetXy 不能为 nullptr\n");
		return 0;
	}

	if (layerName == nullptr)
	{
		TRACE("layerName 不能为 nullptr\n");
		return 0;
	}

	CPositionList plAdd;
	return CreateFavorableAreaImpl(pSourceXy, pTargetXy, layerName, zMin, zMax, plAdd);
}

/**
 * 创建有利区
 * 
 * \param pView		图件对象
 * \param layerName	要创建的目标图层
 * \param zMin		最小 z 值
 * \param zMax		最大 z 值
 * \return 
 */
extern "C" __declspec(dllexport)
int CreateFavorableArea(CSigmaView* pView, CXy* pTargetXy, LPCTSTR layerName, double zMin, double zMax)
{
	if (pView == nullptr)
	{
		TRACE("pView 不能为 nullptr\n");
		return 0;
	}

	if (layerName == nullptr)
	{
		TRACE("layerName 不能为 nullptr\n");
		return 0;
	}

	CPositionList plAdd;
	int nCount = CreateFavorableAreaImpl(pView->m_pDoc->m_pXy, pTargetXy, layerName, zMin, zMax, plAdd);

	// 如果修改的当前图件，我们让它能够撤消
	if (pView->m_pDoc->m_pXy == pTargetXy && plAdd.GetCount() > 0)
	{
		auto pItem = std::make_unique<CActionAddItem>(pView->m_pDoc, 0, plAdd);
		pView->m_pDoc->SetActionItem(pItem.release());
	}

	return nCount;
}