GDI+ questions

[Nirvana6]

I did some research regarding GDI+ but I still have some questions.

-I am looking for a way to animate drawn elements separately ;

e.g. rotate a line by 180 degrees step by step. Any suggestions other than keeping the first pair of coords (x1,y1) fixed , and use ?

Thank you.

[Kip]

Sin/Cos/Tan ?

[UEZ]

Something like that here?

expandcollapse popup

#include <gdiplus.au3>
Opt("GUIOnEventMode", 1)

_GDIPlus_Startup()

Global Const $iW = 800
Global Const $iH = 500
Global Const $hGui = GUICreate("GDI+ Simple Line Rotation", $iW, $iH)
GUISetState()

_GDIPlus_Startup()
Global Const $hGraphics = _GDIPlus_GraphicsCreateFromHWND($hGui)
Global Const $hBitmap = _GDIPlus_BitmapCreateFromGraphics($iW, $iH, $hGraphics)
Global Const $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap)
Global Const $hPen = _GDIPlus_PenCreate(0xFFF0F0F0, 1)
_GDIPlus_GraphicsSetSmoothingMode($hContext, 2)
_GDIPlus_GraphicsClear($hContext, 0xFF000000)
_GDIPlus_GraphicsDrawImageRect($hGraphics, $hBitmap, 0, 0, $iW, $iH)
GUISetOnEvent(-3, "_Exit")

Global Const $fRadians = ACos(-1) / 180
Global Const $iRadius = 200
Global Const $iStart_deg = Random(-180, 180, 1)
Global $iSpeed = Random(-3, 3, 1)
Global Const $iCenterX = $iW / 2
Global Const $iCenterY = $iH / 2

AdlibRegister("Animate", 30)

While Sleep(1000)
WEnd

Func Animate()
    Local Static $degree = $iStart_deg
    _GDIPlus_GraphicsClear($hContext, 0xFF000000)
    _GDIPlus_GraphicsDrawLine($hContext, $iCenterX, $iCenterY, _
                                                        $iCenterX + Cos($degree * $fRadians) * $iRadius, _
                                                        $iCenterY + Sin($degree * $fRadians) * $iRadius, $hPen)
    _GDIPlus_GraphicsDrawImageRect($hGraphics, $hBitmap, 0, 0, $iW, $iH)
    $degree = Mod($degree + $iSpeed, 180)
    If Not $degree Then
        $iSpeed *= -1
    EndIf
EndFunc

Func _Exit()
    AdlibUnRegister("Animate")
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_BitmapDispose($hBitmap)
    _GDIPlus_GraphicsDispose($hContext)
    _GDIPlus_GraphicsDispose($hGraphics)
    _GDIPlus_Shutdown()
    GUIDelete()
    Exit
EndFunc

Br,

UEZ

Edited May 6, 2012 by UEZ

[Nirvana6]

Something like that here?

expandcollapse popup

#include <gdiplus.au3>
Opt("GUIOnEventMode", 1)

_GDIPlus_Startup()

Global Const $iW = 800
Global Const $iH = 500
Global Const $hGui = GUICreate("GDI+ Simple Line Rotation", $iW, $iH)
GUISetState()

_GDIPlus_Startup()
Global Const $hGraphics = _GDIPlus_GraphicsCreateFromHWND($hGui)
Global Const $hBitmap = _GDIPlus_BitmapCreateFromGraphics($iW, $iH, $hGraphics)
Global Const $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap)
Global Const $hPen = _GDIPlus_PenCreate(0xFFF0F0F0, 1)
_GDIPlus_GraphicsSetSmoothingMode($hContext, 2)
_GDIPlus_GraphicsClear($hContext, 0xFF000000)
_GDIPlus_GraphicsDrawImageRect($hGraphics, $hBitmap, 0, 0, $iW, $iH)
GUISetOnEvent(-3, "_Exit")

Global Const $fRadians = ACos(-1) / 180
Global Const $iRadius = 200
Global Const $iStart_deg = Random(-180, 180, 1)
Global $iSpeed = Random(-3, 3, 1)
Global Const $iCenterX = $iW / 2
Global Const $iCenterY = $iH / 2

AdlibRegister("Animate", 30)

While Sleep(1000)
WEnd

Func Animate()
    Local Static $degree = $iStart_deg
    _GDIPlus_GraphicsClear($hContext, 0xFF000000)
    _GDIPlus_GraphicsDrawLine($hContext, $iCenterX, $iCenterY, _
                                                        $iCenterX + Cos($degree * $fRadians) * $iRadius, _
                                                        $iCenterY + Sin($degree * $fRadians) * $iRadius, $hPen)
    _GDIPlus_GraphicsDrawImageRect($hGraphics, $hBitmap, 0, 0, $iW, $iH)
    $degree = Mod($degree + $iSpeed, 180)
    If Not $degree Then
        $iSpeed *= -1
    EndIf
EndFunc

Func _Exit()
    AdlibUnRegister("Animate")
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_BitmapDispose($hBitmap)
    _GDIPlus_GraphicsDispose($hContext)
    _GDIPlus_GraphicsDispose($hGraphics)
    _GDIPlus_Shutdown()
    GUIDelete()
    Exit
EndFunc

Br,

UEZ

Perfect , thank you !