animated drawing methods in c#

**luigi40** · 01-29-2005

i am writing an application using .net ide which will animate a processor. Im new to C# language. Im sure this has been done before however after searching briefly on the net for help i cant find anything specific to my needs.

Which is to have various different lines (width 10 pixels) on a form, at certain times i want to show a small block ( different colour, representing data) move along a certain line (bus). A lecturer at uni has suggested i do something like this

Code:

private int busLength = 25;
private int[] busPath = {x,y,x,y,x,......};/*the x,y points of a certain bus*/
private int dataPos; //position of data on bus
private int oldDataPos;//previous position of data
private int busWidth;

Paint()
{
     for(int 1=0;i<busLength;i++)
      {
        color.grey
        if(i==dataPos)
        color.red
        object.FillRectangle(anotherobject, busPath[i*2]-5,busPath[(i*2)+1]-5, color);
}

i tried playing around with using the array index as an arg in the FillRectangle method with no success (Array out of bounds exception)

can some help me get off the ground or point me in the right direction please

**nvoigt** · 01-29-2005

First you should start writing code that compiles

Try to draw a single rectangle with fixed values.

**Kleid-0** · 01-30-2005

Hey luigi40! Are you painting onto a form?

**luigi40** · 01-30-2005

please excuse my previous code as this was pasted after spending all day trying various ways to get the drawing to work, i have managed to animate a rectangle over a line (width 10) using a timer to call the OnPaint method, however the line doesnt draw properly, i.e. there are glitches, not sure if this is my monitor.

i will practice some more today and post my compilable code

Kleid, yes im drawing on a form, various lines 10 pixels wide, with animated rectangles moving along the lines.

thanks in advance

**Kleid-0** · 01-30-2005

Originally Posted by luigi40

... have managed to animate a rectangle over a line (width 10) using a timer to call the OnPaint method, however the line doesnt draw properly.

That is strange! Try something like this in the onPaint method:

Code:

private void onPaint( Iforgot sender, Iforgot e )
{
   // Get graphics object from the system
   
   Graphics g = e.Graphics;

   // Draw the line using the graphics object
   
   g.drawLine( new Pen( Color.Black ), new Point( 10, 10 ), new Point( 20, 20 ) );
}

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