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Forum Index : Microcontroller and PC projects : weird problem with pixel fill

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William Leue
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Joined: 03/07/2020
Location: United States
Posts: 405

Posted: 03:50pm 02 Nov 2023

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I have encountered a strange problem with pixel fill. This saved image shows the problem.

I start with a white screen.
I create the image by drawing the 4-sided polygon, then drawing the solid black circles. Then I do pixel fill x, y, rgb(red) at the pixel that is marked with the small green square. (the green square is drawn AFTER the fill.) As you can see, the large polygon constrains the fill so that it does not escape into the outside of the polygon, but it somehow does fill the lower half of the polygon, leaking past the totally opaque black circles.

Is this a bug? I am running firmware version 5.07.00b26 on a CMM2 Gen 2.

-B

ill

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10637

Posted: 05:03pm 02 Nov 2023

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More information and a program needed to diagnose. Simple test is OK on 5.07.02b9?

cls rgb(white)
box 100,100,100,100,1,rgb(black)
line 100,100,200,200,1,rgb(black)
pixel fill 150,154,rgb(red)

William Leue
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Joined: 03/07/2020
Location: United States
Posts: 405

Posted: 06:24pm 02 Nov 2023

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Well, Bozo was in the room when I encountered this problem. D'oh! It was a simple bug in my code where I put the fill call in the wrong place. Once I fixed my code, it runs exactly the way I wanted it to, with only the top half being filled.

Sorry to pester you, Peter!
-Bill

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