Texas Instruments Voyage 200 - Pton Catalog; Xypttest Catalog; Pttext Catalog; Pxlcrcl Catalog

856 Appendix A: Functions and Instructions
PtOn CATALOG
PtOn x , y
PtOn
xList , yList
Displays the Graph screen and turns on the screen
pixel nearest to window coordinates
(
x , y ).
PtOn 3,5 ¸
ptTest() CATALOG
ptTest ( x , y ) ⇒
⇒⇒
⇒ Boolean constant expression
ptTest (
xList , yList ) ⇒
⇒⇒
⇒ Boolean constant expression
Returns true or false. Returns true only if the
screen pixel nearest to window coordinates (
x , y )
is on.
ptTest(3,5) ¸ true
PtText CATALOG
PtText string , x , y
Displays the Graph screen and places the
character string
string on the screen at the pixel
nearest the specified (
x, y ) window coordinates.
string is positioned with the upper-left corner of
its first character at the coordinates.
PtText "sample",3,5 ¸
PxlChg CATALOG
PxlChg row , col
PxlChg
rowList , colList
Displays the Graph screen and reverses the pixel
at pixel coordinates (
row , col ).
Note: Regraphing erases all drawn items.
PxlChg 2,4 ¸
PxlCrcl CATALOG
PxlCrcl row , col , r [, drawMode ]
Displays the Graph screen and draws a circle
centered at pixel coordinates (
row , col ) with a
radius of
r pixels.
If
drawMode = 1, draws the circle (default).
If
drawMode = 0, turns off the circle.
If
drawMode = -1, inverts pixels along the circle.
Note: Regraphing erases all drawn items. See
also
Circle.
PxlCrcl 50,125,40,1
¸
PxlHorz CATALOG
PxlHorz row [, drawMode ]
Displays the Graph screen and draws a horizontal
line at pixel position
row .
If
drawMode = 1, draws the line (default).
If
drawMode = 0, turns off the line.
If
drawMode = -1, turns a line that is on to off or
off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
LineHorz.
PxlHorz 25,1 ¸