c#+ArcEngine93 实现实时显示测距结果功能

//

编程

: Jin

开发时间

:2009.8.10-2009.8.11

//

特点

:

实时计算 量测距离

.

//

缺点

:

由于采用

element

做为显示内容

,

地图进行放大缩小操作后并不能很好

//

控制量测值

element

和轨迹线

element

之间的距离间隔

.

//

================================================ ===================

using

System;

using

g;

using

pServices;

using

asses;

using

using ls;

using

using abase;

using

y;

using ry;

using

namespace _Toolbar

{

class

TrackLine : BaseTool

{

private

IHookHelper m_hookHelper =

null

;

private

INewLineFeedback m_NewLineFeedback =

null

;

private

IPointCollection m_ptColl;

//

记录节点

private

MeasureMsgInfo _MsgInfo =

null

;

private

IPolyline m_TraceLine =

null

;

//

完整的轨迹线

//

private

IGroupElement m_Elements =

null

;

//

用于保存包含此功能

产生的所有

Element

private

IGroupElement m_TraceElement =

null

;

//

测距轨迹线

private

IGroupElement m_VertexElement =

null

;

//

结点

private

IGroupElement m_LabelElement =

null

;

//

距离标记

public

TrackLine()

{

//

// TODO: Define values for the public properties

//

base

.m_category =

;

//localizable text

base

.m_caption =

;

//localizable text

base

.m_message =

This should work in ArcMap/M apControl/P

ageLayoutControl

< /p>

;

//localizable text

base

.m_toolTip =

;

//localizable text

base

.m_name =

;

//unique id, non-localizable (e.g.

yCategory_MyTool

try

{

//

// TODO: change resource name if necessary

//

string

bitmapResourceName = GetType().Name +

.bmp

;

base

.m_bitmap = new Bitmap(GetType(), bitmapResourceN

ame);

base

.m_cursor = new (GetTy

pe(), GetType().Name +

.cur

);

}

catch

(Exception ex)

{

ine(e,

Inval

id Bitmap

);

}

}

public

MeasureMsgInfo MsgInfo

{

set

{

_MsgInfo = value;

_osing +=

new

FormClosingEventHandler( m

sgInfo_FromClosing);

}

}

#region

Overriden Class Methods

///

///

Instance of the application

public

override

void

OnCreate(

object

hook)

{

try

{

m_hookHelper =

new

HookHelperClass();

m_ = hook;

if

(m_View == null)

{

m_hookHelper =

null

;

}

}

catch

{

m_hookHelper =

null

;

}

if

(m_hookHelper ==

null

)

base

.m_enabled = false;

else

base

.m_enabled =

true

;

//

TODO: Add other initialization code

}

void

Init()

{

//

初始化

m_Elements =

new

GroupElementClass();

m_TraceElement =

new

GroupElementClass();

m_VertexElement =

new

GroupElementClass();

m_LabelElement =

new

GroupElementClass();

//

初始化

,

并添加到

GraphicsContainer

IGraphicsContainer g = m_View

as

IGraphi

csContainer;

ment(m_Elements

as

IElement,

0

);

ment(m_TraceElement

as

IElement,

0

);

ment(m_VertexElement

as

IElement,

0

);

ment(m_LabelElement

as

IElement,

0

);

//

添加到

m_Elements

中

ementToGroup(m_VertexElement

as

IElement, m_Eleme

nts);

ementToGroup(m_LabelElement

as

IElement, m_Elemen

ts);

ementToGroup(m_TraceElement

as

IElement, m_Elemen

ts);

}

///