Rotate image in pictureBox

23,689

Solution 1

Here below links for question

C# Image/PictureBox Rotations - CodeProject

Rotating PictureBox Control - CodeProject

Solution 2

I remember ever writing a Clock-like UserControl some time ago. Here's the fundamental code to do your request.

Private Sub Paint_Clock(ByVal sender As Object, _
                        ByVal e As System.Windows.Forms.PaintEventArgs) _
                        Handles Clock.Paint

    Dim _independentHands as Boolean = False
    Dim g As Graphics = e.Graphics
    Dim centrePoint As Point = New Point(Clock.Width \ 2, Clock.Height \ 2)
         Dim _time As New TimeSpan(5, 2, 15)
    'pens'
    Dim hourPen As New Pen(Color.Black, 3)
    Dim minPen As New Pen(Color.Black, 2)
    Dim secPen As New Pen(Color.Red, 1)

    'clock hand lengths'
    Dim halfClockWidth As Integer = Clock.Width \ 2
    Dim hourLength As Integer = CInt(halfClockWidth * (4 / 6)) - 5
    Dim minLength As Integer = CInt(halfClockWidth * (5 / 6)) - 5
    Dim secLength As Integer = CInt(halfClockWidth * (5 / 6)) - 5
    Dim secLength2 As Integer = CInt(halfClockWidth * (1 / 6))

    'angles'
    Dim secAngle As Single = CSng(_time.Seconds / 60) * 360
    Dim secAngle2 As Single = secAngle - 180
    Dim minAngle As Single = CSng(_time.Minutes / 60) * 360
    Dim hrAngle As Single = CSng((_time.Hours - 12) / 12) * 360
    If Not _independentHands Then minAngle += (secAngle / 60)
    If Not _independentHands Then hrAngle += (minAngle / 12)

    'centre point'
    Dim pointPen As New Pen(Color.Black, 4)
    Dim pointRect As New Rectangle(centrePoint.X - 2, centrePoint.Y - 2, 4, 4)

    'antialias on'
    g.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias

    'draw the background'
    g.DrawImage(My.Resources.ClockBack, 0, 0, Clock.Width, Clock.Height)

    'draw the hands'
    g.DrawLine(hourPen, centrePoint, GetPoint2(centrePoint, hrAngle, hourLength))
    g.DrawLine(minPen, centrePoint, GetPoint2(centrePoint, minAngle, minLength))
    g.DrawLine(secPen, centrePoint, GetPoint2(centrePoint, secAngle, secLength))
    g.DrawLine(secPen, centrePoint, GetPoint2(centrePoint, secAngle2, secLength2))

    'draw the centre point'
    g.DrawEllipse(pointPen, pointRect)

    'draw the glass'
    g.DrawImage(My.Resources.ClockGlass, 0, 0, Clock.Width, Clock.Height)
End Sub



Private Function GetPoint2(ByVal startPoint As Point, _
                           ByVal angle As Single, _
                           ByVal length As Integer) As Point

    Dim x, y As Integer
    Dim sp As Point = startPoint

    'normalize'
    Do While angle - 360 > 0
        angle -= 360
    Loop
    Do While angle < 0
        angle += 360
    Loop
    If angle = 360 Then angle = 0

    Dim rad = angle * (Math.PI / 180)    'angle in radians'
    'calc the new point'
    x = CInt(length * Math.Sin(rad))
    y = CInt(length * Math.Cos(rad))

    Return New Point(sp.X + x, sp.Y - y)
End Function

Notes
1. Add a PictureBox with the name Clock to your form (or usercontrol)
2. Add a resource called ClockBack for the background of your clock (the clock's face).
3. Add a resource called ClockGlass for the clock's glassy face.
4. Drop the code above in your form.
5. Set a timer's interval to 1000 and have its Tick event Refresh or Invalidate the Clock [which is a PictureBox].


Please note that the variable _independentHands makes the clock's hands independent of each other when set to true.
For example, when set to False, 4:30 will have the hour hand halfway between 4 and 5. When True, the hour hand will be on 4 up till 4:59:59 and will 'jump' to 5 at 5:00:00.

I prefer to leave it to false so as to give the natural clock feel.

Share:
23,689
Javed Akram
Author by

Javed Akram

Updated on November 11, 2020

Comments

  • Javed Akram
    Javed Akram over 3 years

    I am making an Analogue Clock in which i have to rotate the image in my pictureBox...

    e.g. i want to rotate my image by 6 degrees every second.

    what can i do for this?

    Thanks....

    • ratty
      ratty over 13 years
      @javed Akram you still need answer for your problem
    • Mikael
      Mikael over 13 years
      @Javed Akram Have you considered using an image list with images and just switched image every clock "tick"? That could be a rather suitable solution that does not require as much calculations every update.
    • Javed Akram
      Javed Akram over 13 years
      @Mikael,sorry but i am making Clock which will change at every second so according to you i need 43200 images(12X60X60)
    • Mikael
      Mikael over 13 years
      @Javed Akram, Ok, I was a bit unlucky when thinking and thought you only had the one hand moving around the clock..
    • Javed Akram
      Javed Akram over 13 years
      @Mikael, i am very sorry if i hurt you.....
  • Javed Akram
    Javed Akram over 13 years
    RotateFlipType have definate angles 90,180,270 but i want to rotate 6 degrees
  • Oliver
    Oliver over 13 years
    @Javed Akram: Yes, the code example just uses the Framework capabilities, but the two links should give you want you want.
  • ratty
    ratty over 13 years
    @javed Akram see first link i posted , it holds what u want in c#
  • Alex Essilfie
    Alex Essilfie over 13 years
    See the variable called _time on line 8 in my code? Just change it to the time you'd like to display. Preferrably have it loaded from a Class-level variable so that your timer can set the time before the clock is updated.
  • Bobby
    Bobby over 13 years
    Not what he asked for...he needs the ability to rotate the image by 6°, not 90°.