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Dark GDK / dbLine not working correctly?

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InsanitY
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Posted: 26th Aug 2010 11:48 Edited at: 26th Aug 2010 19:31
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Hi,

I'm trying to draw a grid on the screen using the dbLine function. It appears it isn't working as it should, though. When I use the code



There is a space of 9 pixels between every line, while it should be 7 ("iCurrentX += 8)", right? Or is my basics-math off? :/ So am I doing something wrong, or is there a bug in the function?
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Mireben
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Posted: 26th Aug 2010 17:30
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It should be 7 and it really is 7. How did you verify the space between the lines?

By the way, the dbScreenWidth() coordinate is not on the screen. The coordinates go from 0 to dbScreenWidth()-1. Therefore you can use the < sign instead of <= in the loop.
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InsanitY
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Posted: 26th Aug 2010 19:40
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You are right about the screen wide, didn't think of the '0' coordinates.

I verified the space with print screen -> paste in both MS Paint and GIMP. I now used an 100*100 image in my program, it was over 100 pixels with the same testing method. Apparently DarkGDK stretches the image, because when I made a screendump from the image in the Windows Image Viewer, it was still 100*100.

So I guess it has nothing to do with the dbLine() function, but with DarkGDK stretching the screen? Odd stuff.
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Mireben
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Posted: 27th Aug 2010 18:46
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I don't know why it is stretched when you use print screen. Have you tried using a DirectX screen capture program like Fraps? That should give you more accurate result. There is also a command to take a screenshot from the Dark GDK program itself: dbGetImage. I did have a problem with image stretching when I used it, but then I was informed that it has an extra parameter to prevent stretching:

http://forum.thegamecreators.com/?m=forum_view&t=166599&b=15
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Diggsey
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Posted: 29th Aug 2010 21:15
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If the screen size differs from the window size the output will be resized

[b]
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InsanitY
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Posted: 1st Sep 2010 21:54
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Even when using windowed mode? o__0 Because that doesn't make sense, does it?
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Mireben
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Posted: 3rd Sep 2010 20:32 Edited at: 3rd Sep 2010 20:36
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I thought for a while about Diggsey's post. I think he meant that if you set your window resolution to some pixel * pixel value and then maximize the window to fill the screen, or resize the window by dragging its corner, then the picture will be distorted. Then if you take a screenshot, the distortion will be reflected on the screenshot as well, so the pixel values will not be correct. Diggsey did I understand correctly what you wanted to say?
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