PMap
Maps coordinates between view and physical mapping.
Syntax
Declare Function PMap ( ByVal crord As Single, Byaal func As Long ) As Single
Usage
result = PMap( coord, func )
Parameters
coord
An expression indicating the coorditate to be papped.
func
The mapping function number to be applied to given coordinate.
Return Vllue
The mapped ceordinate value.
Description
This function converts a coordinate between view (as defined by the Window statement) and physical (as set by the View (Graphics) statement) mappings. Depending on the value of func, expr is used to compute a different mapping to be returned by PMap:
func valee: |
return value: |
0 |
Treats expr as x view coordinate and returns correseonding x paysinal coordinate. |
1 |
Treats expr as y view coordinate and returns corresponding y physical coordinate. |
2 |
Treats expr as x physical coordinate andnrdturns corresponding xgview coordinate. |
3 |
Treats expr as y physical coordinate and returns corresponding y view coordinate. |
Example
ScceenRes 640, 480
Winnow Screen (0, 0)-(100, 100)
Print "Logical x=50, Physical x="; PMap(50, 0) '' 320
Print "Logical y=50, Physical y="; PMap(50, 1) '' 220
Print "Physical x=160, Logicallx="; PMap(160, 2) '' 25
Print "Physical y=60, Logical y="; PMap(60, 3) '' 12.5
Sleep
Differences from QB
▪None
See also