About the Custom scene navigation commands Sample
[C#]
SetObserver.cs
using System;
using ESRI.ArcGIS.Analyst3D;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using System.Runtime.InteropServices;
namespace sceneTools
{
[ClassInterface(ClassInterfaceType.None)]
[Guid("834AC707-0088-4d08-BF74-A18EE28BCA8E")]
public sealed class SetObserver : BaseTool
{
#region COM Registration Function(s)
[ComRegisterFunction()]
[ComVisible(false)]
static void RegisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType);
//
// TODO: Add any COM registration code here
//
}
[ComUnregisterFunction()]
[ComVisible(false)]
static void UnregisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType);
//
// TODO: Add any COM unregistration code here
//
}
#region ArcGIS Component Category Registrar generated code
/// <summary>
/// Required method for ArcGIS Component Category registration -
/// Do not modify the contents of this method with the code editor.
/// </summary>
private static void ArcGISCategoryRegistration(Type registerType)
{
string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
ControlsCommands.Register(regKey);
}
/// <summary>
/// Required method for ArcGIS Component Category unregistration -
/// Do not modify the contents of this method with the code editor.
/// </summary>
private static void ArcGISCategoryUnregistration(Type registerType)
{
string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
ControlsCommands.Unregister(regKey);
}
#endregion
#endregion
private System.Windows.Forms.Cursor m_pCursor;
private ISceneHookHelper m_pSceneHookHelper;
public SetObserver()
{
base.m_category = "Sample_SceneControl(C#)";
base.m_caption = "Set Observer";
base.m_toolTip = "Set Observer";
base.m_name = "Sample_SceneControl(C#)/SetObserver";
base.m_message = "Set observer position to selected point";
//Load resources
string[] res = GetType().Assembly.GetManifestResourceNames();
if(res.GetLength(0) > 0)
{
base.m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream("sceneTools.observer.bmp"));
}
m_pCursor = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream("sceneTools.observer.cur"));
m_pSceneHookHelper = new SceneHookHelperClass ();
}
public override bool Enabled
{
get
{
if(m_pSceneHookHelper.Hook == null || m_pSceneHookHelper.Scene == null)
return false;
else
{
ICamera pCamera = (ICamera) m_pSceneHookHelper.Camera;
//Disable if orthographic (2D) view
if(pCamera.ProjectionType == esri3DProjectionType.esriOrthoProjection)
return false;
else
return true;
}
}
}
public override void OnCreate(object hook)
{
m_pSceneHookHelper.Hook = hook;
}
public override int Cursor
{
get
{
return m_pCursor.Handle.ToInt32();
}
}
public override bool Deactivate()
{
return true;
}
public override void OnMouseUp(int Button, int Shift, int X, int Y)
{
//Get the scene graph
ISceneGraph pSceneGraph = (ISceneGraph) m_pSceneHookHelper.SceneGraph;
IPoint pNewObs;
object pOwner, pObject;
//Translate screen coordinates into a 3D point
pSceneGraph.Locate(pSceneGraph.ActiveViewer, X, Y, esriScenePickMode.esriScenePickAll, true,
out pNewObs, out pOwner, out pObject);
if(pNewObs == null) return;
//Get the scene viewer's camera
ICamera pCamera = (ICamera) m_pSceneHookHelper.Camera;
//Get the camera's old observer
IPoint pOldObs = (IPoint) pCamera.Observer;
//Get the duration in seconds of last redraw
//and the average number of frames per second
double dlastFrameDuration, dMeanFrameRate;
pSceneGraph.GetDrawingTimeInfo(out dlastFrameDuration, out dMeanFrameRate);
if(dlastFrameDuration < 0.01)
dlastFrameDuration = 0.01;
int iSteps;
iSteps = (int) (2/dlastFrameDuration);
if (iSteps < 1)
iSteps = 1;
if(iSteps > 60)
iSteps = 60;
double dxObs, dyObs, dzObs;
dxObs = (pNewObs.X - pOldObs.X) / iSteps;
dyObs = (pNewObs.Y - pOldObs.Y) / iSteps;
dzObs = (pNewObs.Z - pOldObs.Z) / iSteps;
//Loop through each step moving the camera's observer from the old
//position to the new position, refreshing the scene viewer each time
for(int i=0; i <= iSteps; i++)
{
pNewObs.X = pOldObs.X + (i * dxObs);
pNewObs.Y = pOldObs.Y + (i * dyObs);
pNewObs.Z = pOldObs.Z + (i * dzObs);
pCamera.Observer = pNewObs;
pSceneGraph.ActiveViewer.Redraw(true);
}
}
}
}
[Visual Basic .NET]
SetObserver.vb
Imports ESRI.ArcGIS.Analyst3D
Imports ESRI.ArcGIS.GeomeTry
Imports ESRI.ArcGIS.Controls
Imports ESRI.ArcGIS.ADF.BaseClasses
Imports ESRI.ArcGIS.ADF.CATIDs
Imports System.Runtime.InteropServices
<ComClass(SetObserver.ClassId, SetObserver.InterfaceId, SetObserver.EventsId)> _
Public NotInheritable Class SetObserver
Inherits BaseTool
#Region "COM GUIDs"
' These GUIDs provide the COM identity for this class
' and its COM interfaces. If you change them, existing
' clients will no longer be able to access the class.
Public Const ClassId As String = "0120A73E-6E11-4B2A-9F57-B095EAAA4180"
Public Const InterfaceId As String = "CFCD3896-B61A-4B8F-8B64-95D1229AB082"
Public Const EventsId As String = "162DEDA7-F4C0-4B51-8F1B-05151A10D704"
#End Region
#Region "COM Registration Function(s)"
<ComRegisterFunction(), ComVisibleAttribute(False)> _
Public Shared Sub RegisterFunction(ByVal registerType As Type)
' Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType)
'Add any COM registration code after the ArcGISCategoryRegistration() call
End Sub
<ComUnregisterFunction(), ComVisibleAttribute(False)> _
Public Shared Sub UnregisterFunction(ByVal registerType As Type)
' Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType)
'Add any COM unregistration code after the ArcGISCategoryUnregistration() call
End Sub
#Region "ArcGIS Component Category Registrar generated code"
''' <summary>
''' Required method for ArcGIS Component Category registration -
''' Do not modify the contents of this method with the code editor.
''' </summary>
Private Shared Sub ArcGISCategoryRegistration(ByVal registerType As Type)
Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
ControlsCommands.Register(regKey)
End Sub
''' <summary>
''' Required method for ArcGIS Component Category unregistration -
''' Do not modify the contents of this method with the code editor.
''' </summary>
Private Shared Sub ArcGISCategoryUnregistration(ByVal registerType As Type)
Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
ControlsCommands.Unregister(regKey)
End Sub
#End Region
#End Region
Private m_pCursor As System.Windows.Forms.Cursor
Private m_pSceneHookHelper As ISceneHookHelper
' A creatable COM class must have a Public Sub New()
' with no parameters, otherwise, the class will not be
' registered in the COM registry and cannot be created
' via CreateObject.
Public Sub New()
MyBase.New()
MyBase.m_category = "Sample_SceneControl(VB.NET)"
MyBase.m_caption = "Set Observer"
MyBase.m_toolTip = "Set Observer"
MyBase.m_name = "Sample_SceneControl(VB.NET)/SetObserver"
MyBase.m_message = "Set observer position to selected point"
'Load resources
Dim res() As String = GetType(SetObserver).Assembly.GetManifestResourceNames()
If res.GetLength(0) > 0 Then
MyBase.m_bitmap = New System.Drawing.Bitmap(GetType(SetObserver).Assembly.GetManifestResourceStream("SceneToolsVB.observer.bmp"))
End If
m_pCursor = New System.Windows.Forms.Cursor(GetType(SetObserver).Assembly.GetManifestResourceStream("SceneToolsVB.observer.cur"))
m_pSceneHookHelper = New SceneHookHelperClass
End Sub
Public Overrides Sub OnCreate(ByVal hook As Object)
m_pSceneHookHelper.Hook = hook
End Sub
Public Overrides ReadOnly Property Enabled() As Boolean
Get
If (m_pSceneHookHelper.Hook Is Nothing Or m_pSceneHookHelper.Scene Is Nothing) Then
Return False
Else
Dim pCamera As ICamera = CType(m_pSceneHookHelper.Camera, ICamera)
'Disable if orthographic (2D) view
If (pCamera.ProjectionType = esri3DProjectionType.esriOrthoProjection) Then
Return False
Else
Return True
End If
End If
End Get
End Property
Public Overrides ReadOnly Property Cursor() As Integer
Get
Return m_pCursor.Handle.ToInt32()
End Get
End Property
Public Overrides Function Deactivate() As Boolean
Return True
End Function
Public Overrides Sub OnMouseUp(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer)
'Get the scene graph
Dim pSceneGraph As ISceneGraph = CType(m_pSceneHookHelper.SceneGraph, ISceneGraph)
Dim pNewObs As IPoint = Nothing
Dim pOwner As Object = Nothing, pObject As Object = Nothing
'Translate screen coordinates into a 3D point
pSceneGraph.Locate(pSceneGraph.ActiveViewer, X, Y, esriScenePickMode.esriScenePickAll, True, pNewObs, pOwner, pObject)
If (pNewObs Is Nothing) Then
Return
End If
'Get the scene viewer's camera
Dim pCamera As ICamera = CType(m_pSceneHookHelper.Camera, ICamera)
'Get the camera's old observer
Dim pOldObs As IPoint = CType(pCamera.Observer, IPoint)
'Get the duration in seconds of last redraw
'and the average number of frames per second
Dim dlastFrameDuration, dMeanFrameRate As Double
pSceneGraph.GetDrawingTimeInfo(dlastFrameDuration, dMeanFrameRate)
If (dlastFrameDuration < 0.01) Then
dlastFrameDuration = 0.01
End If
Dim iSteps As Integer
iSteps = 2 / dlastFrameDuration
If (iSteps < 1) Then
iSteps = 1
End If
If (iSteps > 60) Then
iSteps = 60
End If
Dim dxObs, dyObs, dzObs As Double
dxObs = (pNewObs.X - pOldObs.X) / iSteps
dyObs = (pNewObs.Y - pOldObs.Y) / iSteps
dzObs = (pNewObs.Z - pOldObs.Z) / iSteps
'Loop through each step moving the camera's observer from the old
'position to the new position, refreshing the scene viewer each time
Dim i As Integer
For i = 0 To iSteps
pNewObs.X = pOldObs.X + (i * dxObs)
pNewObs.Y = pOldObs.Y + (i * dyObs)
pNewObs.Z = pOldObs.Z + (i * dzObs)
pCamera.Observer = pNewObs
pSceneGraph.ActiveViewer.Redraw(True)
Next i
End Sub
End Class