XDRAW
Syntax |
XDRAW x1,y1 TO x2,y2 |
Location |
HCO |
The command XDRAW draws lines, just like LDRAW, but it draws the lines in white ink, using the XOR mode; so drawing the same line will remove it again without changing the background.
Example
100 REPeat scan 110 w% = RND(1 TO 200)
120 FOR x% = 0 TO 511 + w%
130 IF x% < 512 THEN
140 XDRAW x%,0 TO x%,255
150 END IF
160 IF x% > w% - 1 THEN
170 XDRAW x%-w%,0 TO x%-w%,255
180 END IF
190 IF KEYROW(1)&&8 THEN EXIT scan
200 END FOR x%
210 END REPeat scan
CROSS-REFERENCE