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:nPMAP Statement Programming Example
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PMAP Statement Programming Example
 
This example uses PMAP to convert coordinate values from view to screen
coordinates and from screen coordinates to view coordinates.
                                ----- Note -----
This is not a complete program. Do not run this example in its current form.
                                ----------------
SCREEN 2
'Coordinates of upper-left corner of window defined in following
'statement are (80,100); coordinates of lower-right corner
'are 200,200.
WINDOW SCREEN (80,100) - (200,200)
 
'If physical screen coordinates are (0,0) in the upper-left
'corner and (639,199) in the lower-right corner, then the
'following statements will return the screen coordinates
'equivalent to the view coordinates 80,100.
X = PMAP(80,0)          'X = 0
Y = PMAP(100,1)         'Y = 0
 
'The following statements will return the screen coordinates
'equivalent to the view coordinates 200,200.
X = PMAP(200,0)         'X = 639
Y = PMAP(200,1)         'Y = 199
 
'The following statements will return the view coordinates
'equivalent to the screen coordinates 639,199.
X = PMAP(639,2)         'X = 200
Y = PMAP(199,3)         'Y = 200