LINE, LINE_P ?

[Digitaldreams]

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 questions 

Regards

[Didier Lachieze]

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.

[Digitaldreams]

Thanks Didier...not got much time to read through the manual...

Regards

[DrD]

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-

[Digitaldreams]

Thanks Dale, noticed the RGB command.....Gee the Prime draws circles fast !