Pointcoord
Queries Draw's pen position in graphics mode
The PointCoord function can be used to query x and y position of the Draw pen in graphics mode. The result value depends on the passed func value:
Syntax
Description
The PointCoord function can be used to query x and y position of the Draw pen in graphics mode. The result value depends on the passed func value:
| func value: | return value: |
| 0 | x physical coordinate, same as PMap( PointCoord( 2 ), 0 ) |
| 1 | y physical coordinate, same as PMap( PointCoord( 3 ), 1 ) |
| 2 | x view coordinate |
| 3 | y view coordinate |
Example
Screen 12
Print "--- Default window coordinate mapping ---"
Print "DRAW pen position, at the default (0,0):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Draw "BM 50,50"
Print "DRAW pen position, after being moved to (50,50):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Print "--- Changing window coordinate mapping ---"
Window Screen (-100, -100) - (100, 100)
Draw "BM 0,0"
Print "DRAW pen position, after being moved to (0,0):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Draw "BM 50,50"
Print "DRAW pen position, after being moved to (50,50):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Sleep
Print "--- Default window coordinate mapping ---"
Print "DRAW pen position, at the default (0,0):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Draw "BM 50,50"
Print "DRAW pen position, after being moved to (50,50):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Print "--- Changing window coordinate mapping ---"
Window Screen (-100, -100) - (100, 100)
Draw "BM 0,0"
Print "DRAW pen position, after being moved to (0,0):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Draw "BM 50,50"
Print "DRAW pen position, after being moved to (50,50):"
Print "Physical:", PointCoord( 0 ), PointCoord( 1 )
Print "View:", PointCoord( 2 ), PointCoord( 3 )
Sleep
Differences from QB
- New to FreeBASIC
See also