How do I draw a filled circle only from lines with Canvas ?

Hi.

I was trying to draw a filled circle using this algorithm : http://stackoverflow.com/a/1201304

I am aware it's certainly possible to draw a filled circle using simpler way, but I'm trying to find a fast algorithm to iterate all the pixels contained in a circle, so I'm trying things.

[attachment=1:2zbix766]disk2.png[/attachment:2zbix766]

[attachment=2:2zbix766]disk.png[/attachment:2zbix766]

The question is : why doesn't Canvas draw full black lines here ? The "grey" here is like 25% opacity, it should not be transparent in any way, just plain black.

The lines are being drawn on sub-pixel lines. Mouse.x and .y aren't always integers.

Thank you for your reply