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Forum Index : Microcontroller and PC projects : LINE AA statement question

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ville56
Regular Member

Joined: 08/06/2022
Location: Austria
Posts: 91
Posted: 02:57pm 26 Jul 2024
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I am trying to draw a pointer, emulating a meter, with LINE AA and a line width > 1. As long as the line is not oriented parallel to either x or y axis, the line width is as specified in the statement. In case the line is parallel to x or y axis it is always only 1 pixel. Is there something i forgot to obey? In fact the behavior of line width is exactly the opposite as in the LINE statement as per manual. As LINE only obeyes line width for lines parallel to an axis. And i do not want to switch between LINE and LINE AA depending on the orientation of the line. The routine is time critical.

Version is PicoMite 5.09.00RC5
Display is ILI9341, Landscape

Many thanks for any advice,
Gerald
                                                                 
73 de OE1HGA, Gerald
 
stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2121
Posted: 03:09pm 26 Jul 2024
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line xstart,ystart,xend,yend,,colour
the line width is between yend and colour and is default ie 1 pixel
 
ville56
Regular Member

Joined: 08/06/2022
Location: Austria
Posts: 91
Posted: 03:51pm 26 Jul 2024
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this is not quite what i'm dealing with .... i'm using:

line AA xstart,xend,ystart,yend,LINEWIDTH,colour

and this is drawing lines with the specified LINEWIDTH only of the lines are diagonal. Lines 0/180 or 90/270 degrees (parallel to the axis system) are always 1 pixel wide. I expected to have the lines always drawn LINEWIDTH wide no matter what the angle of the line is.
                                                                 
73 de OE1HGA, Gerald
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 9110
Posted: 05:06pm 26 Jul 2024
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Try this. I've removed some validation code that I have got no recollection as to why it was there.


PicoMite.zip
 
ville56
Regular Member

Joined: 08/06/2022
Location: Austria
Posts: 91
Posted: 05:50pm 26 Jul 2024
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Peter,

thanks a lot. This solved the problem.
And thank you again for this incredible piece of work.

Gerald
                                                                 
73 de OE1HGA, Gerald
 
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