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+--- Thread: LINE, LINE_P ? (/thread-3913.html)
LINE, LINE_P ? - Digitaldreams - 05-19-2015 08:34 AM
I've noticed many commands that output to the screen have two variants, either with or without '_P'. What is the difference ?, the manual shows both but tends to use the _P variant as an example.
Sorry for such simple questionsÂ
Regards
RE: LINE, LINE_P ? - Didier Lachieze - 05-19-2015 08:54 AM
See the details under "Drawing" on page 531. In summary "_P" commands use pixel coordinates to address the screen, while non "_P" commands use Cartesian coordinates where the screen is mapped to a plane defined by Xmin, Xmax, Ymin, and Ymax.
RE: LINE, LINE_P ? - Digitaldreams - 05-19-2015 09:44 AM
Thanks Didier...not got much time to read through the manual...
Regards
RE: LINE, LINE_P ? - DrD - 05-19-2015 10:10 AM
Here's a little skeleton program that shows a way to use colors by name:
Code:
EXPORT test()
BEGIN
local red:=rgb(255,0,0),
green:=rgb(0,255,0),
blue:=rgb(0,0,255),
yellow:=rgb(255,255,0);
rect(); // clear graphic screen
rect_p(75,1,265,16,blue); // present blue rectangle
textout_p("Digitaldreams",G0,130,4,2,yellow); // put your name in the marquee
wait (-1); // admire your name for awhile
END;-Dale-
RE: LINE, LINE_P ? - Digitaldreams - 05-19-2015 11:38 AM
Thanks Dale, noticed the RGB command.....Gee the Prime draws circles fast !