Multiplies each point in an array by a matrix
#include <GDIPlus.au3>
_GDIPlus_MatrixTransformPoints ( $hMatrix, ByRef $aPoints )
| $hMatrix | Pointer to a Matrix object |
| $aPoints | Array of points to be transformed: [0][0] - Number of points [1][0] - Point 1 X coordinate [1][1] - Point 1 Y coordinate [2][0] - Point 2 X coordinate [2][1] - Point 2 Y coordinate [n][0] - Point n X coordinate [n][1] - Point n Y coordinate |
| Success: | True. |
| Failure: | False and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPIP_ERR* see GPIPlusConstants.au3). |
Each point in the array is treated as a row matrix.
The multiplication is performed with the row matrix on the left and the matrix on the right.
Search GdipTransformMatrixPoints in MSDN Library.
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
Example()
Func Example()
; Create GUI
Local $aGui[6]
Local $aPoints[6][2] = [[5]]
For $i = 1 To 5
$aPoints[$i][0] = Cos(6.28 * $i / 5) * @DesktopHeight / 3 + @DesktopWidth / 2
$aPoints[$i][1] = Sin(6.28 * $i / 5) * @DesktopHeight / 3 + @DesktopHeight / 2
$aGui[$i] = GUICreate($i, 120, 100, $aPoints[$i][0] - 60, $aPoints[$i][1] - 50)
GUISetBkColor(0x55)
GUISetState(@SW_SHOW)
Next
_GDIPlus_Startup()
Local $hMatrix = _GDIPlus_MatrixCreate()
_GDIPlus_MatrixTranslate($hMatrix, -@DesktopWidth / 2, -@DesktopHeight / 2)
_GDIPlus_MatrixRotate($hMatrix, 1, True)
_GDIPlus_MatrixTranslate($hMatrix, @DesktopWidth / 2, @DesktopHeight / 2, True)
; Loop until the user exits.
Local $iTimer = TimerInit()
Do
If TimerDiff($iTimer) > 40 Then
_GDIPlus_MatrixTransformPoints($hMatrix, $aPoints)
For $i = 1 To 5
WinMove($aGui[$i], "", $aPoints[$i][0] - 60, $aPoints[$i][1] - 50)
Next
$iTimer = TimerInit()
EndIf
Until GUIGetMsg() = $GUI_EVENT_CLOSE
; Clean up resources
_GDIPlus_MatrixDispose($hMatrix)
_GDIPlus_Shutdown()
EndFunc ;==>Example