About the Dynamic display animated zoom Sample
[C#]
AnimatedZoomInTool.cs
using System;
using System.Drawing;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using System.Windows.Forms;
namespace DynamicDisplayAnimatedZoom
{
/// <summary>
/// Summary description for AnimatedZoomInTool.
/// </summary>
[Guid("3d5a0143-757b-4069-b4e7-973d24793923")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("DynamicDisplayAnimatedZoom.AnimatedZoomInTool")]
public sealed class AnimatedZoomInTool : BaseTool
{
#region COM Registration Function(s)
[ComRegisterFunction()]
[ComVisible(false)]
static void RegisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType);
}
[ComUnregisterFunction()]
[ComVisible(false)]
static void UnregisterFunction(Type registerType)
{
// Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType);
}
#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);
MxCommands.Register(regKey);
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);
MxCommands.Unregister(regKey);
ControlsCommands.Unregister(regKey);
}
#endregion
#endregion
#region class members
private IHookHelper m_hookHelper = null;
private bool m_bIsAnimating = false;
private bool m_bZoomOut = false;
private double m_dStepCount = 0;
private int m_nTotalSteps = 0;
private IPoint m_Center = new PointClass();
private WKSEnvelope m_wksStep = new WKSEnvelope();
private IDynamicMapEvents_Event m_dynamicMapEvents = null;
private const double c_dMinimumDelta = 0.01;
private const double c_dSmoothFactor = 200000.0;
private const double c_dMinimumSmoothZoom = 0.1;
#endregion
public AnimatedZoomInTool()
{
base.m_category = ".NET Samples";
base.m_caption = "Animated Zoom In";
base.m_message = "Zoom in with animation";
base.m_toolTip = "Animated Zoom In";
base.m_name = "DynamicDisplayAnimatedZoom_AnimatedZoomInTool";
try
{
string bitmapResourceName = GetType().Name + ".bmp";
base.m_bitmap = new Bitmap(GetType(), bitmapResourceName);
base.m_cursor = new System.Windows.Forms.Cursor(GetType(), GetType().Name + ".cur");
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
}
}
#region Overriden Class Methods
/// <summary>
/// Occurs when this tool is created
/// </summary>
/// <param name="hook">Instance of the application</param>
public override void OnCreate(object hook)
{
if (null == hook)
return;
try
{
m_hookHelper = new HookHelperClass();
m_hookHelper.Hook = hook;
if (null == m_hookHelper.ActiveView)
m_hookHelper = null;
}
catch
{
m_hookHelper = null;
}
}
/// <summary>
/// The enabled state of this command, determines whether the command is usable.
/// </summary>
public override bool Enabled
{
get
{
if (null == m_hookHelper)
return false;
IDynamicMap dynamicMap = m_hookHelper.FocusMap as IDynamicMap;
bool bIsDynamicMapEnabled = dynamicMap.DynamicMapEnabled;
if (false == bIsDynamicMapEnabled)
{
m_bIsAnimating = false;
m_dStepCount = 0;
m_nTotalSteps = 0;
m_dynamicMapEvents = null;
}
return bIsDynamicMapEnabled;
}
}
/// <summary>
/// Occurs when this tool is clicked
/// </summary>
public override void OnClick()
{
IDynamicMap dynamicMap = m_hookHelper.FocusMap as IDynamicMap;
if (false == dynamicMap.DynamicMapEnabled)
return;
m_dynamicMapEvents = null;
m_dynamicMapEvents = m_hookHelper.FocusMap as IDynamicMapEvents_Event;
m_dynamicMapEvents.DynamicMapStarted += new IDynamicMapEvents_DynamicMapStartedEventHandler(DynamicMapEvents_DynamicMapStarted);
m_bIsAnimating = false;
m_dStepCount = 0;
m_nTotalSteps = 0;
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
// Zoom on the focus map based on user drawn rectangle
m_bZoomOut = Shift == 1;
IActiveView activeView = m_hookHelper.FocusMap as IActiveView;
IRubberBand rubberBand = new RubberEnvelopeClass();
// This method intercepts the Mouse events from here
IEnvelope zoomBounds = rubberBand.TrackNew(activeView.ScreenDisplay, null) as IEnvelope;
if (null == zoomBounds)
return;
WKSEnvelope wksZoomBounds;
zoomBounds.QueryWKSCoords(out wksZoomBounds);
IEnvelope fittedBounds = activeView.ScreenDisplay.DisplayTransformation.FittedBounds;
WKSEnvelope wksFittedBounds;
fittedBounds.QueryWKSCoords(out wksFittedBounds);
if (true == m_bZoomOut)
{
double dXScale = fittedBounds.Width * fittedBounds.Width / zoomBounds.Width;
double dYScale = fittedBounds.Height * fittedBounds.Height / zoomBounds.Height;
wksZoomBounds.XMin = fittedBounds.XMin - dXScale;
wksZoomBounds.YMin = fittedBounds.YMin - dYScale;
wksZoomBounds.XMax = fittedBounds.XMax + dXScale;
wksZoomBounds.YMax = fittedBounds.YMax + dYScale;
}
m_wksStep.XMax = 1;
m_wksStep.YMax = 1;
m_wksStep.XMin = 1;
m_wksStep.YMin = 1;
m_nTotalSteps = 0;
// Calculate how fast the zoom will go by changing the step size
while ((System.Math.Abs(m_wksStep.XMax) > c_dMinimumDelta) ||
(System.Math.Abs(m_wksStep.YMax) > c_dMinimumDelta) ||
(System.Math.Abs(m_wksStep.XMin) > c_dMinimumDelta) ||
(System.Math.Abs(m_wksStep.YMin) > c_dMinimumDelta))
{
m_nTotalSteps++;
// calculate the step size
// step size is the difference between the zoom bounds and the fitted bounds
m_wksStep.XMin = (wksZoomBounds.XMin - wksFittedBounds.XMin) / m_nTotalSteps;
m_wksStep.YMin = (wksZoomBounds.YMin - wksFittedBounds.YMin) / m_nTotalSteps;
m_wksStep.XMax = (wksZoomBounds.XMax - wksFittedBounds.XMax) / m_nTotalSteps;
m_wksStep.YMax = (wksZoomBounds.YMax - wksFittedBounds.YMax) / m_nTotalSteps;
}
m_bIsAnimating = true;
m_dStepCount = 0;
}
public override bool Deactivate()
{
m_bIsAnimating = false;
m_dStepCount = 0;
m_nTotalSteps = 0;
if (null == m_hookHelper)
return false;
IDynamicMap dynamicMap = m_hookHelper.FocusMap as IDynamicMap;
if (false == dynamicMap.DynamicMapEnabled)
return true;
m_dynamicMapEvents = m_hookHelper.FocusMap as IDynamicMapEvents_Event;
m_dynamicMapEvents.DynamicMapStarted -= new IDynamicMapEvents_DynamicMapStartedEventHandler(DynamicMapEvents_DynamicMapStarted);
return true;
}
#endregion
#region Dynamic Map Events
void DynamicMapEvents_DynamicMapStarted(IDisplay Display, IDynamicDisplay dynamicDisplay)
{
if (false == m_bIsAnimating)
{
m_dStepCount = 0;
m_nTotalSteps = 0;
return;
}
if (m_dStepCount >= m_nTotalSteps)
{
m_bIsAnimating = false;
m_dStepCount = 0;
m_nTotalSteps = 0;
return;
}
// Increase the bounds by the step amount
IActiveView activeView = m_hookHelper.FocusMap as IActiveView;
IEnvelope newVisibleBounds = activeView.ScreenDisplay.DisplayTransformation.FittedBounds;
// Smooth the zooming. Faster at higher scales, slower at lower
double dSmoothZooom = activeView.FocusMap.MapScale / c_dSmoothFactor;
if (dSmoothZooom < c_dMinimumSmoothZoom)
dSmoothZooom = c_dMinimumSmoothZoom;
newVisibleBounds.XMin = newVisibleBounds.XMin + (m_wksStep.XMin * dSmoothZooom);
newVisibleBounds.YMin = newVisibleBounds.YMin + (m_wksStep.YMin * dSmoothZooom);
newVisibleBounds.XMax = newVisibleBounds.XMax + (m_wksStep.XMax * dSmoothZooom);
newVisibleBounds.YMax = newVisibleBounds.YMax + (m_wksStep.YMax * dSmoothZooom);
activeView.ScreenDisplay.DisplayTransformation.VisibleBounds = newVisibleBounds;
m_dStepCount = m_dStepCount + dSmoothZooom;
}
#endregion
}
}
[Visual Basic .NET]
AnimatedZoomInTool.vb
Imports Microsoft.VisualBasic
Imports System
Imports System.Drawing
Imports System.Runtime.InteropServices
Imports ESRI.ArcGIS.ADF.BaseClasses
Imports ESRI.ArcGIS.ADF.CATIDs
Imports ESRI.ArcGIS.esriSystem
Imports ESRI.ArcGIS.Geometry
Imports ESRI.ArcGIS.Display
Imports ESRI.ArcGIS.Carto
Imports ESRI.ArcGIS.Controls
Imports System.Windows.Forms
''' <summary>
''' Summary description for AnimatedZoomInTool.
''' </summary>
<Guid("3d5a0143-757b-4069-b4e7-973d24793923"), ClassInterface(ClassInterfaceType.None), ProgId("AnimatedZoomInTool")> _
Public NotInheritable Class AnimatedZoomInTool : Inherits BaseTool
#Region "COM Registration Function(s)"
<ComRegisterFunction(), ComVisible(False)> _
Private Shared Sub RegisterFunction(ByVal registerType As Type)
' Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType)
End Sub
<ComUnregisterFunction(), ComVisible(False)> _
Private Shared Sub UnregisterFunction(ByVal registerType As Type)
' Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType)
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)
MxCommands.Register(regKey)
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)
MxCommands.Unregister(regKey)
ControlsCommands.Unregister(regKey)
End Sub
#End Region
#End Region
#Region "class members"
Private m_hookHelper As IHookHelper = Nothing
Private m_bIsAnimating As Boolean = False
Private m_bZoomOut As Boolean = False
Private m_dStepCount As Double = 0
Private m_nTotalSteps As Integer = 0
Private m_Center As IPoint = New PointClass()
Private m_wksStep As WKSEnvelope = New WKSEnvelope()
Private m_dynamicMapEvents As IDynamicMapEvents_Event = Nothing
Private Const c_dMinimumDelta As Double = 0.01
Private Const c_dSmoothFactor As Double = 200000.0
Private Const c_dMinimumSmoothZoom As Double = 0.1
#End Region
Public Sub New()
MyBase.m_category = ".NET Samples"
MyBase.m_caption = "Animated Zoom In"
MyBase.m_message = "Zoom in with animation"
MyBase.m_toolTip = "Animated Zoom In"
MyBase.m_name = "AnimatedZoomInTool"
Try
Dim bitmapResourceName As String = Me.GetType().Name & ".bmp"
MyBase.m_bitmap = New Bitmap(Me.GetType(), bitmapResourceName)
MyBase.m_cursor = New System.Windows.Forms.Cursor(Me.GetType(), Me.GetType().Name & ".cur")
Catch ex As Exception
System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap")
End Try
End Sub
#Region "Overridden Class Methods"
''' <summary>
''' Occurs when this tool is created
''' </summary>
''' <param name="hook">Instance of the application</param>
Public Overrides Sub OnCreate(ByVal hook As Object)
If Nothing Is hook Then
Return
End If
Try
m_hookHelper = New HookHelperClass()
m_hookHelper.Hook = hook
If Nothing Is m_hookHelper.ActiveView Then
m_hookHelper = Nothing
End If
Catch
m_hookHelper = Nothing
End Try
End Sub
''' <summary>
''' The enabled state of this command, determines whether the command is usable.
''' </summary>
Public Overrides ReadOnly Property Enabled() As Boolean
Get
If Nothing Is m_hookHelper Then
Return False
End If
Dim dynamicMap As IDynamicMap = TryCast(m_hookHelper.FocusMap, IDynamicMap)
Dim bIsDynamicMapEnabled As Boolean = dynamicMap.DynamicMapEnabled
If False = bIsDynamicMapEnabled Then
m_bIsAnimating = False
m_dStepCount = 0
m_nTotalSteps = 0
m_dynamicMapEvents = Nothing
End If
Return bIsDynamicMapEnabled
End Get
End Property
''' <summary>
''' Occurs when this tool is clicked
''' </summary>
Public Overrides Sub OnClick()
Dim dynamicMap As IDynamicMap = TryCast(m_hookHelper.FocusMap, IDynamicMap)
If False = dynamicMap.DynamicMapEnabled Then
Return
End If
m_dynamicMapEvents = Nothing
m_dynamicMapEvents = TryCast(m_hookHelper.FocusMap, IDynamicMapEvents_Event)
AddHandler m_dynamicMapEvents.DynamicMapStarted, AddressOf DynamicMapEvents_DynamicMapStarted
m_bIsAnimating = False
m_dStepCount = 0
m_nTotalSteps = 0
End Sub
Public Overrides Sub OnMouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer)
' Zoom on the focus map based on user drawn rectangle
m_bZoomOut = Shift = 1
Dim activeView As IActiveView = TryCast(m_hookHelper.FocusMap, IActiveView)
Dim rubberBand As IRubberBand = New RubberEnvelopeClass()
' This method intercepts the Mouse events from here
Dim zoomBounds As IEnvelope = TryCast(rubberBand.TrackNew(activeView.ScreenDisplay, Nothing), IEnvelope)
If Nothing Is zoomBounds Then
Return
End If
Dim wksZoomBounds As WKSEnvelope
zoomBounds.QueryWKSCoords(wksZoomBounds)
Dim fittedBounds As IEnvelope = activeView.ScreenDisplay.DisplayTransformation.FittedBounds
Dim wksFittedBounds As WKSEnvelope
fittedBounds.QueryWKSCoords(wksFittedBounds)
If True = m_bZoomOut Then
Dim dXScale As Double = fittedBounds.Width * fittedBounds.Width / zoomBounds.Width
Dim dYScale As Double = fittedBounds.Height * fittedBounds.Height / zoomBounds.Height
wksZoomBounds.XMin = fittedBounds.XMin - dXScale
wksZoomBounds.YMin = fittedBounds.YMin - dYScale
wksZoomBounds.XMax = fittedBounds.XMax + dXScale
wksZoomBounds.YMax = fittedBounds.YMax + dYScale
End If
m_wksStep.XMax = 1
m_wksStep.YMax = 1
m_wksStep.XMin = 1
m_wksStep.YMin = 1
m_nTotalSteps = 0
' Calculate how fast the zoom will go by changing the step size
Do While (System.Math.Abs(m_wksStep.XMax) > c_dMinimumDelta) OrElse (System.Math.Abs(m_wksStep.YMax) > c_dMinimumDelta) OrElse (System.Math.Abs(m_wksStep.XMin) > c_dMinimumDelta) OrElse (System.Math.Abs(m_wksStep.YMin) > c_dMinimumDelta)
m_nTotalSteps += 1
' calculate the step size
' step size is the difference between the zoom bounds and the fitted bounds
m_wksStep.XMin = (wksZoomBounds.XMin - wksFittedBounds.XMin) / m_nTotalSteps
m_wksStep.YMin = (wksZoomBounds.YMin - wksFittedBounds.YMin) / m_nTotalSteps
m_wksStep.XMax = (wksZoomBounds.XMax - wksFittedBounds.XMax) / m_nTotalSteps
m_wksStep.YMax = (wksZoomBounds.YMax - wksFittedBounds.YMax) / m_nTotalSteps
Loop
m_bIsAnimating = True
m_dStepCount = 0
End Sub
Public Overrides Function Deactivate() As Boolean
m_bIsAnimating = False
m_dStepCount = 0
m_nTotalSteps = 0
If Nothing Is m_hookHelper Then
Return False
End If
Dim dynamicMap As IDynamicMap = TryCast(m_hookHelper.FocusMap, IDynamicMap)
If False = dynamicMap.DynamicMapEnabled Then
Return True
End If
m_dynamicMapEvents = TryCast(m_hookHelper.FocusMap, IDynamicMapEvents_Event)
RemoveHandler m_dynamicMapEvents.DynamicMapStarted, AddressOf DynamicMapEvents_DynamicMapStarted
Return True
End Function
#End Region
#Region "Dynamic Map Events"
Private Sub DynamicMapEvents_DynamicMapStarted(ByVal Display As IDisplay, ByVal dynamicDisplay As IDynamicDisplay)
If False = m_bIsAnimating Then
m_dStepCount = 0
m_nTotalSteps = 0
Return
End If
If m_dStepCount >= m_nTotalSteps Then
m_bIsAnimating = False
m_dStepCount = 0
m_nTotalSteps = 0
Return
End If
' Increase the bounds by the step amount
Dim activeView As IActiveView = TryCast(m_hookHelper.FocusMap, IActiveView)
Dim newVisibleBounds As IEnvelope = activeView.ScreenDisplay.DisplayTransformation.FittedBounds
' Smooth the zooming. Faster at higher scales, slower at lower
Dim dSmoothZooom As Double = activeView.FocusMap.MapScale / c_dSmoothFactor
If dSmoothZooom < c_dMinimumSmoothZoom Then
dSmoothZooom = c_dMinimumSmoothZoom
End If
newVisibleBounds.XMin = newVisibleBounds.XMin + (m_wksStep.XMin * dSmoothZooom)
newVisibleBounds.YMin = newVisibleBounds.YMin + (m_wksStep.YMin * dSmoothZooom)
newVisibleBounds.XMax = newVisibleBounds.XMax + (m_wksStep.XMax * dSmoothZooom)
newVisibleBounds.YMax = newVisibleBounds.YMax + (m_wksStep.YMax * dSmoothZooom)
activeView.ScreenDisplay.DisplayTransformation.VisibleBounds = newVisibleBounds
m_dStepCount = m_dStepCount + dSmoothZooom
End Sub
#End Region
End Class