How to add path by pixels?

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I have:

C#

GraphicsPath path = new GraphicsPath();

I wanna add a path by pixels, not by point.

Point Class doesn't match, because it adds minimum 2 pixels, not one.

C#

private void Draw(object sender, System.Windows.Forms.PaintEventArgs e)
{
    e.Graphics.DrawLine(Pens.Red, 10, 10, 10, 10); // Adds nothing.
    e.Graphics.DrawLine(Pens.Red, 10, 10, 11, 10); // Adds 2 pixels.
}

Posted 10-Oct-14 1:15am

Ziya1995

Updated 10-Oct-14 3:12am

George Jonsson

v3

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Comments

George Jonsson 10-Oct-14 7:54am

A path is usually defined as a route through two or more points.
A one point path makes little sense.

BillWoodruff 10-Oct-14 8:08am

How is it that a Point which is two co-ordinates pointing to some location in some region adds 2 pixels ?

George Jonsson 10-Oct-14 8:20am

Good point. :)

Ziya1995 10-Oct-14 8:49am

private void Draw(object sender, System.Windows.Forms.PaintEventArgs e)
{
e.Graphics.DrawLine(Pens.Red, 10, 10, 10, 10); // Adds nothing.
e.Graphics.DrawLine(Pens.Red, 10, 10, 11, 10); // Adds 2 pixels.
}

How to add 1 pixel? Not possible? Who knows?

1 solution

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George Jonsson · Accepted Answer · 2014-10-10T03:26:00

Solution 1

The Graphics class doesn't have a SetPixel method.

I think you need to look into Bitmap.SetPixel Method[^]

Or you can use GDI functions via Platform Invoke.
C# GetPixel and SetPixel[^]

It depends on your other requirements what is suitable for you.

Posted 10-Oct-14 3:26am

George Jonsson