About the Custom scene navigation commands Sample
[C#]
ZoomIn.cs
using System;
using System.Drawing;
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("6BA62F0E-5337-47fe-8B45-E5359B0D85D8")]
public sealed class ZoomIn : BaseTool
{
[DllImport("user32")] public static extern int ReleaseCapture(int hwnd);
[DllImport("user32")] public static extern int SetCapture(int hwnd);
[DllImport("user32")] public static extern int GetCapture(int fuFlags);
[DllImport("user32")] public static extern int GetWindowRect(int hwnd, ref Rectangle lpRect);
#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;
private long m_lMouseX, m_lMouseY;
private bool m_bInUse;
public ZoomIn()
{
base.m_category = "Sample_SceneControl(C#)";
base.m_caption = "Zoom In";
base.m_toolTip = "Zoom In";
base.m_name = "Sample_SceneControl(C#)/Zoom In";
base.m_message = "Zooms in on the scene";
//Load resources
string[] res = GetType().Assembly.GetManifestResourceNames();
if(res.GetLength(0) > 0)
{
base.m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream("sceneTools.ZoomIn.bmp"));
}
m_pCursor = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream("sceneTools.ZoomIn.cur"));
m_pSceneHookHelper = new SceneHookHelperClass ();
}
public override bool Enabled
{
get
{
if(m_pSceneHookHelper.Scene == null)
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 OnKeyDown(int keyCode, int Shift)
{
if(m_bInUse == true)
{
if(keyCode == 27) //If ESC was pressed
{
//Redraw the scene viewer
ISceneViewer pSceneViewer = (ISceneViewer) m_pSceneHookHelper.ActiveViewer;
pSceneViewer.Redraw(true);
ReleaseCapture(m_pSceneHookHelper.ActiveViewer.hWnd);
m_bInUse = false;
}
}
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
//Initialize mouse coordinates
m_bInUse = true;
m_lMouseX = X;
m_lMouseY = Y;
//Get the scene viewer
ISceneViewer pSceneViewer = (ISceneViewer) m_pSceneHookHelper.ActiveViewer;
SetCapture(m_pSceneHookHelper.ActiveViewer.hWnd);
}
public override void OnMouseMove(int Button, int Shift, int X, int Y)
{
if(!m_bInUse) return;
IEnvelope pEnvelope;
//Draw rectangle on the device
CreateEnvelope(X, Y, out pEnvelope);
DrawRectangle(pEnvelope);
}
public override void OnMouseUp(int Button, int Shift, int X, int Y)
{
if(!m_bInUse) return;
try
{
if (GetCapture(m_pSceneHookHelper.ActiveViewer.hWnd) != 0)
ReleaseCapture(m_pSceneHookHelper.ActiveViewer.hWnd);
//Get the scene viewer's camera
ICamera pCamera = (ICamera)m_pSceneHookHelper.Camera;
//Get the scene graph
ISceneGraph pSceneGraph = (ISceneGraph)m_pSceneHookHelper.SceneGraph;
//Create envelope
IEnvelope pEnvelope;
CreateEnvelope(X, Y, out pEnvelope);
IPoint pPoint;
object pOwner, pObject;
if (pEnvelope.Width == 0 || pEnvelope.Height == 0)
{
//Translate screen coordinates into a 3D point
pSceneGraph.Locate(pSceneGraph.ActiveViewer, X, Y, esriScenePickMode.esriScenePickAll, true,
out pPoint, out pOwner, out pObject);
//Set camera target and zoom in
pCamera.Target = pPoint;
pCamera.Zoom(0.75);
}
else
{
//if perspective (3D) view
if (pCamera.ProjectionType == esri3DProjectionType.esriPerspectiveProjection)
{
//Zoom camera to the envelope
pCamera.ZoomToRect(pEnvelope);
}
else
{
//Translate screen coordinates into a 3D point
pSceneGraph.Locate(pSceneGraph.ActiveViewer, (int)(pEnvelope.XMin + (pEnvelope.Width / 2)),
(int)(pEnvelope.YMin + (pEnvelope.Height / 2)), esriScenePickMode.esriScenePickAll, true,
out pPoint, out pOwner, out pObject);
//Set camera target
pCamera.Target = pPoint;
//Get dimension of the scene viewer window
Rectangle rect;
rect = new Rectangle();
if (GetWindowRect(m_pSceneHookHelper.ActiveViewer.hWnd, ref rect) == 0) return;
double dx, dy;
dx = pEnvelope.Width;
dy = pEnvelope.Height;
//Determine zoom factor
if (dx > 0 && dy > 0)
{
dx = dx / Math.Abs(rect.Right - rect.Left);
dy = dy / Math.Abs(rect.Top - rect.Bottom);
if (dx > dy)
pCamera.Zoom(dx);
else
pCamera.Zoom(dy);
}
else
pCamera.Zoom(0.75);
}
}
}
finally
{
//Redraw the scene viewer
ISceneViewer pSceneViewer = (ISceneViewer)m_pSceneHookHelper.ActiveViewer;
pSceneViewer.Redraw(true);
m_bInUse = false;
}
}
public void CreateEnvelope(int X, int Y, out IEnvelope pEnvelope)
{
//Create envelope based upon the initial
//and current mouse coordinates
pEnvelope = new EnvelopeClass();
if((double)m_lMouseX <= (double)X)
{
pEnvelope.XMin = (double) m_lMouseX;
pEnvelope.XMax = (double) X;
}
else
{
pEnvelope.XMin = (double) X;
pEnvelope.XMax = (double) m_lMouseX;
}
if((double) m_lMouseY <= (double) Y)
{
pEnvelope.YMin = (double) m_lMouseY;
pEnvelope.YMax = (double) Y;
}
else
{
pEnvelope.YMin = (double) Y;
pEnvelope.YMax = (double) m_lMouseY;
}
}
public void DrawRectangle(IEnvelope pEnvelope)
{
//Get the scene viewer
ISceneViewer pSceneViewer = (ISceneViewer) m_pSceneHookHelper.ActiveViewer;
using (Graphics myGraphics = Graphics.FromHdc((IntPtr)m_pSceneHookHelper.ActiveViewer.hDC))
{
using (Brush brush = new SolidBrush(Color.Transparent))//hollow brush
{
//GDI+ call to fill a rectangle with a hollow brush
myGraphics.FillRectangle(brush, (int)pEnvelope.XMin, (int)pEnvelope.YMin,
(int)pEnvelope.Width, (int)pEnvelope.Height);
}
using (Pen pen = new System.Drawing.Pen(Color.Black, 2)) //A solid, width of 2 black pen
{
//GDI+ call to draw a rectangle with a specified pen
myGraphics.DrawRectangle(pen, (int)pEnvelope.XMin, (int)pEnvelope.YMin,
(int)pEnvelope.Width, (int)pEnvelope.Height);
}
}
}
}
}
[Visual Basic .NET]
ZoomIn.vb
Imports System.Drawing
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(ZoomIn.ClassId, ZoomIn.InterfaceId, ZoomIn.EventsId)> _
Public NotInheritable Class ZoomIn
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 = "2E281E85-C9F7-4846-B40B-BC865EBCEC26"
Public Const InterfaceId As String = "3A6847EC-AA6C-40C2-8F4A-3C60D5D3FC9D"
Public Const EventsId As String = "D3A50432-2789-49E5-9262-5C750875405A"
#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
Declare Function GetCapture Lib "user32" (ByVal fuFlags As Integer) As Integer
Declare Function SetCapture Lib "user32" (ByVal hwnd As Integer) As Integer
Declare Function ReleaseCapture Lib "user32" (ByVal hwnd As Integer) As Integer
Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Integer, ByRef lpRect As Rectangle) As Integer
Private m_pCursor As System.Windows.Forms.Cursor
Private m_pSceneHookHelper As ISceneHookHelper
Private m_lMouseX, m_lMouseY As Long
Private m_bInUse As Boolean
Private m_pen As Pen
Private m_brush As Brush
Private myGraphics As Graphics
' 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 = "Zoom In"
MyBase.m_toolTip = "Zoom In"
MyBase.m_name = "Sample_SceneControl(VB.NET)/Zoom In"
MyBase.m_message = "Zooms in on the scene"
'Load resources
Dim res() As String = GetType(ZoomIn).Assembly.GetManifestResourceNames()
If res.GetLength(0) > 0 Then
MyBase.m_bitmap = New System.Drawing.Bitmap(GetType(ZoomIn).Assembly.GetManifestResourceStream("SceneToolsVB.ZoomIn.bmp"))
End If
m_pCursor = New System.Windows.Forms.Cursor(GetType(ZoomIn).Assembly.GetManifestResourceStream("SceneToolsVB.ZoomIn.cur"))
m_pSceneHookHelper = New SceneHookHelperClass
End Sub
Public Overrides Sub OnCreate(ByVal hook As Object)
m_pSceneHookHelper.Hook = hook
Dim ptrHDC As IntPtr
ptrHDC = New IntPtr(m_pSceneHookHelper.ActiveViewer.hDC)
myGraphics = Graphics.FromHdc(ptrHDC)
m_brush = New SolidBrush(Color.Transparent) 'hollow brush
m_pen = New System.Drawing.Pen(Color.Black, 2) 'A solid, width of 2 black pen
End Sub
Public Overrides ReadOnly Property Enabled() As Boolean
Get
If (m_pSceneHookHelper.Scene Is Nothing) Then
Return False
Else
Return True
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 OnKeyDown(ByVal keyCode As Integer, ByVal Shift As Integer)
If (m_bInUse = True) Then
If (keyCode = 27) Then 'if ESC was pressed
'Redraw the scene viewer
Dim pSceneViewer As ISceneViewer = CType(m_pSceneHookHelper.ActiveViewer, ISceneViewer)
pSceneViewer.Redraw(True)
ReleaseCapture(m_pSceneHookHelper.ActiveViewer.hWnd)
m_bInUse = False
End If
End If
End Sub
Public Overrides Sub OnMouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer)
'Initialize mouse coordinates
m_bInUse = True
m_lMouseX = X
m_lMouseY = Y
Dim pEnvelope As IEnvelope = Nothing
'Initialize(Envelope)
CreateEnvelope(X, Y, pEnvelope)
'Get the scene viewer
Dim pSceneViewer As ISceneViewer = CType(m_pSceneHookHelper.ActiveViewer, ISceneViewer)
SetCapture(m_pSceneHookHelper.ActiveViewer.hWnd)
End Sub
Public Overrides Sub OnMouseMove(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer)
If Not m_bInUse Then
Return
End If
Dim pEnvelope As IEnvelope = Nothing
'Draw rectangle on the device
CreateEnvelope(X, Y, pEnvelope)
DrawRectangle(pEnvelope)
End Sub
Public Overrides Sub OnMouseUp(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer)
If Not m_bInUse Then
Return
End If
If (GetCapture(m_pSceneHookHelper.ActiveViewer.hWnd) <> 0) Then
ReleaseCapture(m_pSceneHookHelper.ActiveViewer.hWnd)
End If
'Get the scene viewer's camera
Dim pCamera As ICamera = CType(m_pSceneHookHelper.Camera, ICamera)
'Get the scene graph
Dim pSceneGraph As ISceneGraph = CType(m_pSceneHookHelper.SceneGraph, ISceneGraph)
'Create(Envelope)
Dim pEnvelope As IEnvelope = Nothing
CreateEnvelope(X, Y, pEnvelope)
Dim pPoint As IPoint = Nothing
Dim pOwner As Object = Nothing, pObject As Object = Nothing
If (pEnvelope.Width = 0 Or pEnvelope.Height = 0) Then
'Translate screen coordinates into a 3D point
pSceneGraph.Locate(pSceneGraph.ActiveViewer, X, Y, esriScenePickMode.esriScenePickAll, True, pPoint, pOwner, pObject)
'Set camera target and zoom in
pCamera.Target = pPoint
pCamera.Zoom(0.75)
Else
'If perspective (3D) view
If (pCamera.ProjectionType = esri3DProjectionType.esriPerspectiveProjection) Then
'Zoom camera to the envelope
pCamera.ZoomToRect(pEnvelope)
Else
'Translate screen coordinates into a 3D point
pSceneGraph.Locate(pSceneGraph.ActiveViewer, pEnvelope.XMin + (pEnvelope.Width / 2), _
pEnvelope.YMin + (pEnvelope.Height / 2), esriScenePickMode.esriScenePickAll, True, _
pPoint, pOwner, pObject)
'Set camera target
pCamera.Target = pPoint
'Get dimension of the scene viewer window
Dim rect As Rectangle
rect = New Rectangle
If (GetWindowRect(m_pSceneHookHelper.ActiveViewer.hWnd, rect) = 0) Then
Return
End If
Dim dx, dy As Double
dx = pEnvelope.Width
dy = pEnvelope.Height
'Determine zoom factor
If (dx > 0 And dy > 0) Then
dx = dx / Math.Abs(rect.Right - rect.Left)
dy = dy / Math.Abs(rect.Top - rect.Bottom)
If (dx > dy) Then
pCamera.Zoom(dx)
Else
pCamera.Zoom(dy)
End If
Else
pCamera.Zoom(0.75)
End If
End If
End If
'Redraw the scene viewer
Dim pSceneViewer As ISceneViewer = CType(m_pSceneHookHelper.ActiveViewer, ISceneViewer)
pSceneViewer.Redraw(True)
m_bInUse = False
End Sub
Public Sub CreateEnvelope(ByVal X As Integer, ByVal Y As Integer, ByRef pEnvelope As IEnvelope)
'Create envelope based upon the initial
'and current mouse coordinates
pEnvelope = New EnvelopeClass
If (CType(m_lMouseX, Double) <= CType(X, Double)) Then
pEnvelope.XMin = CType(m_lMouseX, Double)
pEnvelope.XMax = CType(X, Double)
Else
pEnvelope.XMin = CType(X, Double)
pEnvelope.XMax = CType(m_lMouseX, Double)
End If
If (CType(m_lMouseY, Double) <= CType(Y, Double)) Then
pEnvelope.YMin = CType(m_lMouseY, Double)
pEnvelope.YMax = CType(Y, Double)
Else
pEnvelope.YMin = CType(Y, Double)
pEnvelope.YMax = CType(m_lMouseY, Double)
End If
End Sub
Public Sub DrawRectangle(ByRef pEnvelope As IEnvelope)
'Get the scene viewer
Dim pSceneViewer As ISceneViewer = CType(m_pSceneHookHelper.ActiveViewer, ISceneViewer)
'Redraw the rectangle
pSceneViewer.Redraw(True)
'GDI+ call to fill a rectangle with a hollow brush
myGraphics.FillRectangle(m_brush, CType(pEnvelope.XMin, Integer), CType(pEnvelope.YMin, Integer), _
CType(pEnvelope.Width, Integer), CType(pEnvelope.Height, Integer))
'GDI+ call to draw a rectangle with a specified pen
myGraphics.DrawRectangle(m_pen, CType(pEnvelope.XMin, Integer), CType(pEnvelope.YMin, Integer), _
CType(pEnvelope.Width, Integer), CType(pEnvelope.Height, Integer))
End Sub
End Class