Topic       : The GFA-Basic Compendium
Author      : GFA Systemtechnik GmbH
Version     : GFABasic.HYP v2.98 (12/31/2023)
Subject     : Documentation/Programming
Nodes       : 899
Index Size  : 28056
HCP-Version : 3
Compiled on : Atari
@charset    : atarist
@lang       : 
@default    : Document not found
@help       : Help
@options    : +g -i -s +z
@width      : 75
@hostname   : STRNGSRV
@hostname   : CAB     
@hostname   : HIGHWIRE
@hostname   : THING   
View Ref-FileCLIP, CLIP OFF, CLIP OFFSET
PLOT
LINE
DRAW, DRAW TO
DRAW(), SETDRAW
BOX, PBOX
RBOX, PRBOX
CIRCLE, PCIRCLE
ELLIPSE, PELLIPSE
POLYLINE, POLYMARK, POLYFILL
POINT()
FILL
CLS
TEXT
SPRITE
CURVE

First of all in this section, the use of the CLIP commands in graphic displays
is considered.

The general graphic commands PLOT, LINE, BOX, RBOX, CIRCLE, and ELLIPSE are
considered next. These draw points, lines, rectangles, rectangles with rounded
corners, circles, and ellipses, and by means of PBOX, PRBOX, PCIRCLE, and
PELLIPSE, they can be filled with colors or patterns.

POLYLINE draws a polygonal shape, and corner points made up of symbols defined
with DEFMARK can be added using POLYMARK. POLYFILL fills this Polygon with a
defined pattern, in a defind color. POINT() returns the color of a particular
screen point. FILL fills a bordered area and TEXT makes it possible to display
character strings in arbitrary places on the screen. CLS clears the entire
screen. At the end of the section, the command, BITBLT is covered.

The Origin (location 0,0) with all these graphic commands is located in the
top-left corner of the screen. The coordinates of graphic elements can lie
outside the actual screen display area but only the visible parts of the
graphics are represented.