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This is a BASIC two-point perspective program for the TI-83 Plus.
The program was designed mainly for making buildings - that's why
it's entitled HOUSES. READ BEFORE RUNNING.
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At the beginning:
Press 0-9 to load a picture, ENTER to start with a blank screen and
default settings (vanishing points X=-75 and X=75,center=0),
and CLEAR to draw the basic structure--
Center: X-coordinate of center vertical line (keeping in mind the
screen is -47 to 47, and -31 to 31)
Top: Upper Y-coordinate of same
Bottom: Lower Y-coordinate
Edges: X-coordinates
Vanishing points: X-coordinates
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Controls:
(Arrows): move.
2nd: vertical line (once to set 1st point, and again to set
Y-coordinate of endpoint and to draw the line)
ENTER: perspective line (once to set 1st point, and again to
set X-coordinate of endpoint and to draw the line; 1st point should
not be center)
CLEAR: quit (0-9 to save picture,CLEAR to exit)
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To be added:
-Roof
-Easier-to-use format
-Whatever else is suggested
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History:
6/7/03:   571 bytes  original program
6/15/03:  901 bytes  added save/load
10/12/03: 937 bytes  added custom vanishing points
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Anthony,2003
AIM: justgo2sleep
E-mail: justgotosleep@yahoo.com
Other E-mail: justgo2sleep@netscape.net