Radio Shack TRS-80 - Page 28

Computer Graphics Operation Manual
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or
Integer
Examples
DIM V% (186)
1.0 DIM V(249)
2.0 CIRCLE (65,45),2.0,1
3.0 GET (1.0,1.0)-(12.0,8.0),V
An array is created, a circle is drawn and stored in the
array via the GET statement's rectangular pixel area's
parameters (i. e., <1.0,1.0) - <12.0 , 8.0) ) •
Calculate the dimensions of the array this way:
Rectangular pixel area is III x 71. That equals:
111/8= 14 * 71 =994 + 4 = 998/4 = 25~
(10,10) ,....-------------.., (120,10)
Rectangular
Pixel
Area
(10,80)
(120,80)
Figure 11
1.0 DIM V(3.0,3~)
2.0 CIRCLE (5~,5.0),1~
3.0 GET (1.0,1.0)-(8.0,8.0),V
A two-dimensional array is created, a circle is drawn and
stored in the array via the GET statement's rectangular
pixel area's parameters (i.e., (1.0,1.0)-(8.0,8~».
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