03-15-2005, 12:50 AM
While working up a quick example I noticed that the documentation at http://www.hybd.net/~mms/fb/help/current...rence.html states the optional SCREEN in the WINDOW command will NOT make the screen increase in a Cartesian manner. However.....
This works as it should, but opposite what the document says.... remove the SCREEN command in the WINDOW command and the opposite happens.
Code:
const PI as double = 3.1415926535897932385
const CircleRadius as double = 9.5
dim angle as double
dim a as double
dim x as double
dim y as double
dim old_x as double
dim old_y as double
screen 18,32,1,1
window screen (-10,10) - (10,-10)
cls
PRINT "Hit Any Key To Begin"
sleep
cls
'Draw some old fashioned X, Y axis
line (-10,0)-(10,0),rgb(255,0,0)
line (0,10)-(0,-10),rgb(255,0,0)
do while inkey$<>""
loop
for angle = 0 to 2*pi step Pi/12
pset(old_x,old_y),rgb(0,0,0)
x = CircleRadius * cos(angle)
y = CircleRadius * sin(angle)
pset (x,y),rgb(255,255,255)
old_x = x
old_y = y
sleep 500
next angle
for a = 0 to 10
line (1,0)-(1,a),rgb(255,0,255)
sleep 500
next angle
sleepThis works as it should, but opposite what the document says.... remove the SCREEN command in the WINDOW command and the opposite happens.