Zi 字媒體
2017-07-25T20:27:27+00:00
C# 簡易2D CAD元件資料處理模組[GScenario.cs]
資料來源:http://www.codeproject.com/Articles/23259/A-Utility-for-Network-Diagrams
此模組只用於四邊形和線段兩種資料格式，配合UI達到新增、刪除、命名、選取和移動元件等功能，我在看完成事後加上對應註解，所以趕快備份到部落格跟大家分享。
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace Graphic
{
public class GObject//元件內部資料 類別
{
public string Name;//顯示文字
public string Type;//類型
public int x1;//左上座標
public int y1;
public string Lnk1;//左連結的元件名稱
public int x2;//右下座標
public int y2;
public string Lnk2;//右連結的元件名稱
public GObject()//建構子，將所以成員變數清空
{
Name = “”;
Type = “”;
Lnk1 = “”;
Lnk2 = “”;
x1 = 0;
y1 = 0;
x2 = 0;
y2 = 0;
}
public GObject(string ObjName, string ObjType, int ObjX1, int ObjY1, string LNK1, int ObjX2, int ObjY2, string LNK2)//建構子，將所以成員變數設定對應值
{
Name = ObjName;
Type = ObjType;
Lnk1 = LNK1;
Lnk2 = LNK2;
x1 = ObjX1;
y1 = ObjY1;
x2 = ObjX2;
y2 = ObjY2;
}
public void Clear()//清空內部成員變數值
{
Name = “”;
Type = “”;
Lnk1 = “”;
Lnk2 = “”;
x1 = 0;
y1 = 0;
x2 = 0;
y2 = 0;
}
}
public class GScenario//管理元件 類別
{
public int Nobj;//紀錄GObjects的數量
public int CurrObjIndx;//當前元件Indx
public GObject[] GObjects;//存放元件變數
private const double PrcLineDist = 1;//連接線的寬度//0.01;
public GScenario(int Nobjects)//建構子，設定一個畫面做多的元件數，並且預先建立儲存空間
{
CurrObjIndx = 0;
Nobj = Nobjects;
GObjects = new GObject[Nobjects];
for (int i = 0; i < Nobjects; i++)
{
GObjects[i] = new GObject();
}
}
public void Clear()//清空所有紀錄元件值
{
// Nobj remains unaffected !
CurrObjIndx = 0;
for (int i = 0; i < Nobj; i++)
{
GObjects[i].Clear();
}
}
public int FindContainerObject(int X, int Y, ref GObject GContainer, bool NoLineFlag)//找出目前是否有選取元件，如果有元件被選取則回傳該元件
{
GObject CurrObj;
bool inside = false;
int retval = -1;
double m = 0;
double q = 0;
double d = 0;
double dmax = 0;
double e = 0;
for (int i = 0; i < Nobj; i++)
{
CurrObj = GObjects[i];
if (CurrObj.Type != “Line”)
{
//
// module of (x2,y2) is always > (x1,y1)
//
inside = (X >= CurrObj.x1) && (Y >= CurrObj.y1);
inside = inside && (X <= CurrObj.x2);
inside = inside && (Y <= CurrObj.y2);
}
else
{
//
// due to mobile links can be (x2,y2) > or < di (x1,y1)
// in this case we don’t consider the container
// but only if we are next to the line
//
m = (double)(CurrObj.y2 – CurrObj.y1) / (CurrObj.x2 – CurrObj.x1);
q = (double)CurrObj.y1 – m * CurrObj.x1;
d = System.Math.Abs(Y – m * X – q) / System.Math.Sqrt(1 + m * m);
dmax = CommFnc.module(X,Y);
e = d / dmax;
inside = (e < PrcLineDist);
if (NoLineFlag == true) inside = false;
}
if (inside == true)
{
GContainer = CurrObj;
retval = i;
}
}
return retval;
}
public void AddGObject(string ObjName, string ObjType,int x1, int y1, int x2, int y2)//增加元件到管理容器
{
GObject ObjToAdd = new GObject();
ObjToAdd.x1 = x1;
ObjToAdd.y1 = y1;
ObjToAdd.Lnk1 = “”;
ObjToAdd.x2 = x2;
ObjToAdd.y2 = y2;
ObjToAdd.Lnk2 = “”;
ObjToAdd.Name = ObjName;
ObjToAdd.Type = ObjType;
GObjects[CurrObjIndx] = ObjToAdd;
CurrObjIndx++;
}
public void ModifyGObject(GObject OldGObject, GObject NewGObject)//修改元件值
{
//
// Adjust all the references
//
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Lnk1 == OldGObject.Name)
{
GObjects[i].Lnk1 = NewGObject.Name;
}
if (GObjects[i].Lnk2 == OldGObject.Name)
{
GObjects[i].Lnk2 = NewGObject.Name;
}
}
//
// Adjust Object properties
//
OldGObject.x1 = NewGObject.x1;
OldGObject.y1 = NewGObject.y1;
OldGObject.Lnk1 = NewGObject.Lnk1;
OldGObject.x2 = NewGObject.x2;
OldGObject.y2 = NewGObject.y2;
OldGObject.Lnk2 = NewGObject.Lnk2;
OldGObject.Name = NewGObject.Name;
OldGObject.Type = NewGObject.Type;
}
public void DeleteGObject(GObject GObjectToDelete)
{
if (CurrObjIndx ==0)
{
//
// There’s no objects!
//
}
else
{
//
// Find the index of the object to delete
//
int IndexToDelete = 0;
FindGObjectIndxByName(GObjectToDelete.Name, ref IndexToDelete);//找出元件編號
//
// Adjust (nullify) all the references
//
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Lnk1 == GObjectToDelete.Name)
{
GObjects[i].Lnk1 = “”;
}
if (GObjects[i].Lnk2 == GObjectToDelete.Name)
{
GObjects[i].Lnk2 = “”;
}
}
//
// Nullify Object properties
//
GObjectToDelete.x1 = 0;
GObjectToDelete.y1 = 0;
GObjectToDelete.Lnk1 = “”;
GObjectToDelete.x2 = 0;
GObjectToDelete.y2 = 0;
GObjectToDelete.Lnk2 = “”;
GObjectToDelete.Name = “”;
GObjectToDelete.Type = “”;
//
// Left Shift of the GObjects vector
//
int j = IndexToDelete;
while (j < Nobj-1)//移動元件
{
GObjects[j] = GObjects[j + 1];
j++;
}
CurrObjIndx–;
}
}
public void FindGObjectIndxByName(string ObjName, ref int GObjIndx)//用名稱找元件，並把該元件對應的編號回傳
{
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Name == ObjName)
{
GObjIndx = i;
}
}
}
public void FindGObjectByName(string ObjLnkName, ref GObject GObj)//用名稱找元件，並把該元件對應的元件回傳
{
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Name == ObjLnkName)
{
GObj = GObjects[i];
}
}
}
public void AdjustLinkedTo(string ObjLnkName)//調整連結
{
GObject GObjLinked = new GObject();
FindGObjectByName(ObjLnkName, ref GObjLinked);
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Type == “Line”)
{
if (GObjects[i].Lnk1 == ObjLnkName)
{
GObjects[i].x1 = (GObjLinked.x1 + GObjLinked.x2) / 2;
GObjects[i].y1 = (GObjLinked.y1 + GObjLinked.y2) / 2;
}
//
if (GObjects[i].Lnk2 == ObjLnkName)
{
GObjects[i].x2 = (GObjLinked.x1 + GObjLinked.x2) / 2;
GObjects[i].y2 = (GObjLinked.y1 + GObjLinked.y2) / 2;
}
}
}
}
public int LastIndexOfGObject(string Type)
{
int retval = 0;
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Type == Type)
{
retval++;
}
}
return retval;
}
public bool LoadFile(string FileFullPath, ref string sErrFileMsg)//載入紀錄
{
string sVariable = “”;
string sValue = “”;
string cFirst = “”;
int i = 0;
int iLine = 0;
GObject NewGObj = new GObject();
sErrFileMsg = “”;
try
{
using (StreamReader sr = new StreamReader(FileFullPath))
{
String sLine = “”;
while (sLine != “end network file.”)
{
sLine = sr.ReadLine();
iLine++;
if (sLine==”end object.”)
{
sLine = sr.ReadLine();
iLine++;
}
if (sLine == “”)
{
cFirst = “*”;
}
else
{
cFirst = sLine.Substring(0, 1);
}
if (cFirst == “*”)
{
// null o *-beginning lines are like comments
}
else
{
while ((sLine != “end object.”) && (sLine != “end network file.”))
{
CommFnc.RowDecode(sLine, ref sVariable, ref sValue);
switch (sVariable)
{
case “object”:
NewGObj.Name = sValue;
break;
case “type”:
NewGObj.Type = sValue;
break;
case “lnk1”:
NewGObj.Lnk1 = sValue;
break;
case “lnk2”:
NewGObj.Lnk2 = sValue;
break;
case “x1”:
NewGObj.x1 = System.Convert.ToInt32(sValue);
break;
case “x2”:
NewGObj.x2 = System.Convert.ToInt32(sValue);
break;
case “y1”:
NewGObj.y1 = System.Convert.ToInt32(sValue);
break;
case “y2”:
NewGObj.y2 = System.Convert.ToInt32(sValue);
break;
default:
break;
}
sLine = sr.ReadLine();
iLine++;
}
if (sLine == “end object.”)
{
GObjects[i] = new GObject(NewGObj.Name, NewGObj.Type,
NewGObj.x1, NewGObj.y1, NewGObj.Lnk1, NewGObj.x2, NewGObj.y2, NewGObj.Lnk2);
i++;
CurrObjIndx = i;
}
}
}
}
return true;
}
catch (Exception e)
{
sErrFileMsg = “Error reading file : ” + e.Message + ” line = “+ i.ToString() + “\n”;
return false;
}
}
public bool SaveFile(string FileFullPath, ref string sErrFileMsg)//儲存紀錄
{
sErrFileMsg = “”;
try
{
using (StreamWriter sw = new StreamWriter(FileFullPath))
{
String sLine;
for (int i = 0; i < Nobj; i++)
{
if (GObjects[i].Name != “”)
{
sLine = “object=” + GObjects[i].Name + “;”;
sw.WriteLine(sLine);
sLine = “type=” + GObjects[i].Type + “;”;
sw.WriteLine(sLine);
sLine = “x1=” + GObjects[i].x1.ToString() + “;”;
sw.WriteLine(sLine);
sLine = “y1=” + GObjects[i].y1.ToString() + “;”;
sw.WriteLine(sLine);
sLine = “lnk1=” + GObjects[i].Lnk1 + “;”;
sw.WriteLine(sLine);
sLine = “x2=” + GObjects[i].x2.ToString() + “;”;
sw.WriteLine(sLine);
sLine = “y2=” + GObjects[i].y2.ToString() + “;”;
sw.WriteLine(sLine);
sLine = “lnk2=” + GObjects[i].Lnk2 + “;”;
sw.WriteLine(sLine);
sLine = “end object.”;
sw.WriteLine(sLine);
sw.WriteLine();
}
}
sw.WriteLine(“end network file.”);
}
return true;
}
catch (Exception e)
{
sErrFileMsg = “Error writing file : ” + e.Message + “\n”;
return false;
}
}
}
}
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