graphpara.cpp

用于地理信息系统（GIS）行业程序。 完整的鼠标交互式地图点、线、面的绘制

//GraphPara.h

#include "stdafx.h"
#include "GraphPara.h"


CGraphPara::CGraphPara()
{
	m_ColorNum=4;
	m_LayerNum=1;
	m_LayerArray=new LayerStruct[m_LayerNum];
	m_ColorArray=new long[m_ColorNum];

	m_ColorArray[0]=RGB(0,0,0);
	m_ColorArray[1]=RGB(255,0,0);
	m_ColorArray[2]=RGB(0,255,0);
	m_ColorArray[3]=RGB(0,0,255);
	m_LayerArray[0].IsDisplay=1;
	strcpy(m_LayerArray[0].LayerName,"Layer 0");
	
}

	CGraphPara::~CGraphPara()
	{
		delete m_ColorArray;
		delete m_LayerArray;
		m_LayerArray = NULL;
		m_ColorArray = NULL;
	}


COLORREF CGraphPara::GetColor(int n)
{
	return (COLORREF)m_ColorArray[n];
}

bool CGraphPara::GetDisplayState(int n)
{
	return m_LayerArray[n].IsDisplay;
}

void CGraphPara::SetColor(long lcolor)
{
	return;
}

//获得图形的唯一ID号
int CGraphPara::GetIdOnly()
{
	static bool bSignValue=false;
	static	int IdArray[20000];

	if(!bSignValue)
	{
		for(int i=0;i<20000;i++)
			IdArray[i]=0;
		bSignValue=true;
	}

	for(int j=0; j < 20000; j++)
	{
		if(IdArray[j]!=1)
		{
		IdArray[j]=1;
		return j;
		}
	}

	return -1;

	
}