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Imports Kitware.VTK
Public Class Form1
Dim puzzle As vtkSpherePuzzle
Dim mapper As vtkPolyDataMapper
Dim actor As vtkActor
Dim arrows As vtkSpherePuzzleArrows
Dim mapper2 As vtkPolyDataMapper
Dim actor2 As vtkActor
Dim once As Boolean
Dim in_piece_rotation As Boolean
Dim LastVal As Double
Dim LastValExists As Boolean
' <summary>
' Reset
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
puzzle.Reset()
RenderWindowControl1.RenderWindow.Render()
End Sub
' <summary>
' Quit
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Close()
End Sub
' <summary>
' Set up the dialog
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Private Sub RenderWindowControl1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RenderWindowControl1.Load
'Setup the variables and the background
Dim ren1 As vtkRenderer
ren1 = RenderWindowControl1.RenderWindow.GetRenderers().GetFirstRenderer()
mapper.SetInputConnection(puzzle.GetOutputPort())
mapper2.SetInputConnection(arrows.GetOutputPort())
actor.SetMapper(mapper)
actor2.SetMapper(mapper2)
ren1.AddActor(actor)
ren1.AddActor(actor2)
ren1.SetBackground(0.1, 0.2, 0.4)
'Set up the camera
ren1.ResetCamera()
Dim cam As vtkCamera
cam = ren1.GetActiveCamera()
cam.Elevation(-40)
RenderWindowControl1.RenderWindow.Render()
'Change the style to a trackball style
'Equivalent of pressing 't'
Dim iren As vtkRenderWindowInteractor
Dim istyle As vtkInteractorStyleSwitch
iren = RenderWindowControl1.RenderWindow.GetInteractor()
istyle = vtkInteractorStyleSwitch.[New]
iren.SetInteractorStyle(istyle)
istyle.SetCurrentStyleToTrackballCamera()
'Add events to the iren instead of Observers
AddHandler iren.MouseMoveEvt, AddressOf MotionCallback
AddHandler iren.CharEvt, AddressOf CharCallback
End Sub
' <summary>
' Clean up globals
' </summary>
Sub disposeAllVTKObjects()
puzzle.Dispose()
mapper.Dispose()
actor.Dispose()
arrows.Dispose()
mapper2.Dispose()
actor2.Dispose()
End Sub
' <summary>
' Highlights pieces
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Sub MotionCallback(ByVal sender As vtkObject, ByVal e As vtkObjectEventArgs)
'Make sure the piece isn't in an animation
'durring a click or bad things happen
If in_piece_rotation = False Then
Dim iren As vtkRenderWindowInteractor
Dim istyle As vtkInteractorStyleSwitch
iren = RenderWindowControl1.RenderWindow.GetInteractor()
istyle = iren.GetInteractorStyle()
'return if the user is performing interaction
If istyle.GetState() <> 0 Then
Return
End If
Dim pos() As Integer
Dim x As Integer
Dim y As Integer
pos = iren.GetEventPosition()
x = pos(0)
y = pos(1)
Dim ren1 As vtkRenderer
ren1 = RenderWindowControl1.RenderWindow.GetRenderers().GetFirstRenderer()
ren1.SetDisplayPoint(x, y, ren1.GetZ(x, y))
ren1.DisplayToWorld()
Dim pt() As Double
Dim val As Double
pt = ren1.GetWorldPoint()
val = puzzle.SetPoint(pt(0), pt(1), pt(2))
If (LastValExists = False Or val <> LastVal) Then
RenderWindowControl1.RenderWindow.Render()
LastVal = val
LastValExists = True
End If
End If
End Sub
' <summary>
' Called when a key is pressed
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Sub CharCallback(byval sender as vtkObject, byval e as vtkObjectEventArgs)
Dim iren As vtkRenderWindowInteractor
Dim keycode As SByte
iren = RenderWindowControl1.RenderWindow.GetInteractor()
keycode = iren.GetKeyCode()
'if the keycode is not M
If (keycode <> 109 And keycode <> 77) Then
Return
End If
Dim pos() As Integer
pos = iren.GetEventPosition()
ButtonCallback(pos(0), pos(1))
End Sub
' <summary>
' Moves the sphere when the mouse is clicked in
' position (x,y)
' </summary>
' <param name="x"></param>
' <param name="y"></param>
Sub ButtonCallback(ByVal x As Double, ByVal y As Double)
If (in_piece_rotation = False) Then
in_piece_rotation = True
Dim ren1 As vtkRenderer
ren1 = RenderWindowControl1.RenderWindow.GetRenderers().GetFirstRenderer()
ren1.SetDisplayPoint(x, y, ren1.GetZ(x, y))
ren1.DisplayToWorld()
Dim pt() As Double
pt = ren1.GetWorldPoint()
x = pt(0)
y = pt(1)
Dim z As Double
z = pt(2)
Dim i As Integer
i = 0
While i <= 100
puzzle.SetPoint(x, y, z)
puzzle.MovePoint(i)
RenderWindowControl1.RenderWindow.Render()
Me.Update()
i = i + 10
End While
in_piece_rotation = False
End If
End Sub
' <summary>
' Scrambles the puzzle when the form first becomes
' visible
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Private Sub Form1_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Activated
Me.Timer1.Start()
End Sub
' <summary>
' Clean up
' </summary>
' <param name="sender"></param>
' <param name="e"></param>
Private Sub Form1_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Handles Me.FormClosed
disposeAllVTKObjects()
End Sub
Public Sub New()
' This call is required by the Windows Form Designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
puzzle = vtkSpherePuzzle.[New]
mapper = vtkPolyDataMapper.[New]
actor = vtkActor.[New]
arrows = vtkSpherePuzzleArrows.[New]
mapper2 = vtkPolyDataMapper.[New]
actor2 = vtkActor.[New]
once = True
in_piece_rotation = False
LastVal = 0
LastValExists = False
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
If (once = True) Then
ButtonCallback(218, 195)
ButtonCallback(261, 128)
ButtonCallback(213, 107)
ButtonCallback(203, 162)
ButtonCallback(134, 186)
once = False
End If
End Sub
End Class
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