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WideBoyDixon

3D Pie Chart

40 posts in this topic

#1 ·  Posted (edited)

I've revamped this so that it doesn't "cheat" any more but instead creates a fills paths properly. This should be a bit quicker to draw and the result looks a bit nicer I think. In addition, I've added the capability to display the pie as a 2D donut with a configurable hole size in the middle. The sliders at the bottom can be used to rotate the pie chart and also to change the aspect (but not for a donut). The third slider changes the hole size.

#include <GDIPlus.au3>
#include <WinAPI.au3>
#include <GUISlider.au3>
#include <GUIConstants.au3>
#include <WindowsConstants.au3>
#include <Date.au3>

; Let's be strict here
Opt("MustDeclareVars", 1)

; Controls the size of the pie and also the depth
Global Const $PIE_DIAMETER = 400
Global Const $PIE_MARGIN = $PIE_DIAMETER * 0.025
Global Const $PIE_DEPTH = $PIE_DIAMETER * 0.2
Global Const $PIE_AREA = $PIE_DIAMETER + 2 * $PIE_MARGIN

; Random data for values and colours
Global Const $NUM_VALUES = 8
Global $aChartValue[$NUM_VALUES]
Global $aChartColour[$NUM_VALUES]
For $i = 0 To $NUM_VALUES - 1
    $aChartValue[$i] = Random(5, 25, 1)
    $aChartColour[$i] = (Random(0, 255, 1) * 0x10000) + (Random(0, 255, 1) * 0x100) + Random(0, 255, 1)
Next

; The value of PI
Global Const $PI = ATan(1) * 4

; Start GDI+
_GDIPlus_Startup()

; Create the brushes and pens
Global $ahBrush[$NUM_VALUES][2], $ahPen[$NUM_VALUES]
For $i = 0 To $NUM_VALUES - 1
    $ahBrush[$i][0] = _GDIPlus_BrushCreateSolid(BitOR(0xff000000, $aChartColour[$i]))
    $ahBrush[$i][1] = _GDIPlus_BrushCreateSolid(BitOR(0xff000000, _GetDarkerColour($aChartColour[$i])))
    $ahPen[$i] = _GDIPlus_PenCreate(BitOR(0xff000000, _GetDarkerColour(_GetDarkerColour($aChartColour[$i]))))
Next

; Create the GUI with sliders to control the aspect, rotation, style and hole size (for donuts)
Global $hWnd = GUICreate("Pie Chart", $PIE_AREA, $PIE_AREA + 100, Default, Default)
Global $hSlideAspect = _GUICtrlSlider_Create($hWnd, $PIE_MARGIN, $PIE_AREA + 10, $PIE_DIAMETER, 20)
_GUICtrlSlider_SetRange($hSlideAspect, 10, 100)
_GUICtrlSlider_SetPos($hSlideAspect, 50)
Global $hSlideRotation = _GUICtrlSlider_Create($hWnd, $PIE_MARGIN, $PIE_AREA + 40, $PIE_DIAMETER, 20)
_GUICtrlSlider_SetRange($hSlideRotation, 0, 360)
Global $cStyle = GUICtrlCreateCheckbox("Donut", $PIE_MARGIN, $PIE_AREA + 70, $PIE_DIAMETER / 2 - $PIE_MARGIN, 20)
Global $hStyle = GUICtrlGetHandle($cStyle)
Global $hHoleSize = _GUICtrlSlider_Create($hWnd, $PIE_MARGIN + $PIE_DIAMETER / 2, $PIE_AREA + 70, $PIE_DIAMETER / 2, 20)
_GUICtrlSlider_SetRange($hHoleSize, 2, $PIE_DIAMETER - 4 * $PIE_MARGIN)
_GUICtrlSlider_SetPos($hHoleSize, $PIE_DIAMETER / 2)
GUISetState()

; Set up GDI+
Global $hDC = _WinAPI_GetDC($hWnd)
Global $hGraphics = _GDIPlus_GraphicsCreateFromHDC($hDC)
Global $hBitmap = _GDIPlus_BitmapCreateFromGraphics($PIE_AREA, $PIE_AREA, $hGraphics)
Global $hBuffer = _GDIPlus_ImageGetGraphicsContext($hBitmap)
_GDIPlus_GraphicsSetSmoothingMode($hBuffer, 2)

; Draw the initial pie chart
_DrawPie($aChartValue, _GUICtrlSlider_GetPos($hSlideAspect) / 100, _
        _GUICtrlSlider_GetPos($hSlideRotation), _
        (GUICtrlRead($cStyle) = $GUI_CHECKED), _
        _GUICtrlSlider_GetPos($hHoleSize))

; The sliders will send WM_NOTIFY messages
GUIRegisterMsg($WM_NOTIFY, "_OnNotify")

; Wait until the user quits
While GUIGetMsg() <> $GUI_EVENT_CLOSE
    Sleep(10)
WEnd

; Release the resources
For $i = 0 To UBound($aChartColour) - 1
    _GDIPlus_PenDispose($ahPen[$i])
    _GDIPlus_BrushDispose($ahBrush[$i][0])
    _GDIPlus_BrushDispose($ahBrush[$i][1])
Next
_GDIPlus_GraphicsDispose($hBuffer)
_GDIPlus_BitmapDispose($hBitmap)
_GDIPlus_GraphicsDispose($hGraphics)
_WinAPI_ReleaseDC($hWnd, $hDC)

; Shut down GDI+
_GDIPlus_Shutdown()

; Done
Exit

; Get a darker version of a colour by extracting the RGB components
Func _GetDarkerColour($Colour)
    Local $Red, $Green, $Blue
    $Red = (BitAND($Colour, 0xff0000) / 0x10000) - 40
    $Green = (BitAND($Colour, 0x00ff00) / 0x100) - 40
    $Blue = (BitAND($Colour, 0x0000ff)) - 40
    If $Red < 0 Then $Red = 0
    If $Green < 0 Then $Green = 0
    If $Blue < 0 Then $Blue = 0
    Return ($Red * 0x10000) + ($Green * 0x100) + $Blue
EndFunc ;==>_GetDarkerColour

; Draw the pie chart
Func _DrawPie($Percentage, $Aspect, $rotation, $style = 0, $holesize = 100)
    If $style <> 0 Then $Aspect = 1
    Local $nCount, $nTotal = 0, $angleStart, $angleSweep, $X, $Y
    Local $pieLeft = $PIE_MARGIN, $pieTop = $PIE_AREA / 2 - ($PIE_DIAMETER / 2) * $Aspect
    Local $pieWidth = $PIE_DIAMETER, $pieHeight = $PIE_DIAMETER * $Aspect, $hPath

; Total up the values
    For $nCount = 0 To UBound($Percentage) - 1
        $nTotal += $Percentage[$nCount]
    Next

; Set the fractional values
    For $nCount = 0 To UBound($Percentage) - 1
        $Percentage[$nCount] /= $nTotal
    Next

; Make sure we don't over-rotate
    $rotation = Mod($rotation, 360)

; Clear the graphics buffer
    _GDIPlus_GraphicsClear($hBuffer, 0xffc0c0c0)

; Set the initial angles based on the fractional values
    Local $Angles[UBound($Percentage) + 1]
    For $nCount = 0 To UBound($Percentage)
        If $nCount = 0 Then
            $Angles[$nCount] = $rotation
        Else
            $Angles[$nCount] = $Angles[$nCount - 1] + ($Percentage[$nCount - 1] * 360)
        EndIf
    Next

    Switch $style
        Case 0
    ; Adjust the angles based on the aspect
            For $nCount = 0 To UBound($Percentage)
                $X = $PIE_DIAMETER * Cos($Angles[$nCount] * $PI / 180)
                $Y = $PIE_DIAMETER * Sin($Angles[$nCount] * $PI / 180)
                $Y -= ($PIE_DIAMETER - $pieHeight) * Sin($Angles[$nCount] * $PI / 180)
                If $X = 0 Then
                    $Angles[$nCount] = 90 + ($Y < 0) * 180
                Else
                    $Angles[$nCount] = ATan($Y / $X) * 180 / $PI
                EndIf
                If $X < 0 Then $Angles[$nCount] += 180
                If $X >= 0 And $Y < 0 Then $Angles[$nCount] += 360
                $X = $PIE_DIAMETER * Cos($Angles[$nCount] * $PI / 180)
                $Y = $pieHeight * Sin($Angles[$nCount] * $PI / 180)
            Next

    ; Decide which pieces to draw first and last
            Local $nStart = -1, $nEnd = -1
            For $nCount = 0 To UBound($Percentage) - 1
                $angleStart = Mod($Angles[$nCount], 360)
                $angleSweep = Mod($Angles[$nCount + 1] - $Angles[$nCount] + 360, 360)
                If $angleStart <= 270 And ($angleStart + $angleSweep) >= 270 Then
                    $nStart = $nCount
                EndIf
                If ($angleStart <= 90 And ($angleStart + $angleSweep) >= 90) _
                        Or ($angleStart <= 450 And ($angleStart + $angleSweep) >= 450) Then
                    $nEnd = $nCount
                EndIf
                If $nEnd >= 0 And $nStart >= 0 Then ExitLoop
            Next

    ; Draw the first piece
            _DrawPiePiece($hBuffer, $pieLeft, $pieTop, $pieWidth, $pieHeight, $PIE_DEPTH * (1 - $Aspect), $nStart, $Angles)
            
    ; Draw pieces "to the right"
            $nCount = Mod($nStart + 1, UBound($Percentage))
            While $nCount <> $nEnd
                _DrawPiePiece($hBuffer, $pieLeft, $pieTop, $pieWidth, $pieHeight, $PIE_DEPTH * (1 - $Aspect), $nCount, $Angles)
                $nCount = Mod($nCount + 1, UBound($Percentage))
            WEnd
            
    ; Draw pieces "to the left"
            $nCount = Mod($nStart + UBound($Percentage) - 1, UBound($Percentage))
            While $nCount <> $nEnd
                _DrawPiePiece($hBuffer, $pieLeft, $pieTop, $pieWidth, $pieHeight, $PIE_DEPTH * (1 - $Aspect), $nCount, $Angles)
                $nCount = Mod($nCount + UBound($Percentage) - 1, UBound($Percentage))
            WEnd
            
    ; Draw the last piece
            _DrawPiePiece($hBuffer, $pieLeft, $pieTop, $pieWidth, $pieHeight, $PIE_DEPTH * (1 - $Aspect), $nEnd, $Angles)
        Case 1
    ; Draw the donut pieces
            For $nCount = 0 To UBound($Percentage) - 1
                $angleStart = Mod($Angles[$nCount], 360)
                $angleSweep = Mod($Angles[$nCount + 1] - $Angles[$nCount] + 360, 360)
                
        ; Draw the outer arc in a darker colour
                $hPath = _GDIPlus_GraphicsPathCreate()
                _GDIPlus_GraphicsPathAddArc($hPath, $pieLeft, $pieTop, $pieWidth, $pieHeight, $angleStart, $angleSweep)
                _GDIPlus_GraphicsPathAddArc($hPath, $pieLeft + $PIE_MARGIN, $pieTop + $PIE_MARGIN, $pieWidth - $PIE_MARGIN * 2, _
                        $pieHeight - $PIE_MARGIN * 2, $angleStart + $angleSweep, -$angleSweep)
                _GDIPlus_GraphicsPathCloseFigure($hPath)
                _GDIPlus_GraphicsFillPath($hBuffer, $ahBrush[$nCount][1], $hPath)
                _GDIPlus_GraphicsDrawPath($hBuffer, $ahPen[$nCount], $hPath)
                _GDIPlus_GraphicsPathDispose($hPath)
                
        ; Draw the inner piece in a lighter colour - leave room for the hole
                $hPath = _GDIPlus_GraphicsPathCreate()
                _GDIPlus_GraphicsPathAddArc($hPath, $pieLeft + $PIE_MARGIN, $pieTop + $PIE_MARGIN, $pieWidth - $PIE_MARGIN * 2, _
                        $pieHeight - $PIE_MARGIN * 2, $angleStart, $angleSweep)
                _GDIPlus_GraphicsPathAddArc($hPath, $pieLeft + ($PIE_DIAMETER - $holesize) / 2, $pieTop + ($PIE_DIAMETER - $holesize) / 2, _
                        $holesize, $holesize, $angleStart + $angleSweep, -$angleSweep)
                _GDIPlus_GraphicsPathCloseFigure($hPath)
                _GDIPlus_GraphicsFillPath($hBuffer, $ahBrush[$nCount][0], $hPath)
                _GDIPlus_GraphicsDrawPath($hBuffer, $ahPen[$nCount], $hPath)
                _GDIPlus_GraphicsPathDispose($hPath)
            Next
    EndSwitch

; Now draw the bitmap on to the device context of the window
    _GDIPlus_GraphicsDrawImage($hGraphics, $hBitmap, 0, 0)
EndFunc ;==>_DrawPie

Func _OnNotify($hWnd, $iMsg, $wParam, $lParam)
    Local $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    Local $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    Switch $hWndFrom
        Case $hSlideAspect, $hSlideRotation, $hStyle, $hHoleSize
    ; Update the pie chart
            _DrawPie($aChartValue, _GUICtrlSlider_GetPos($hSlideAspect) / 100, _
                    _GUICtrlSlider_GetPos($hSlideRotation), _
                    (GUICtrlRead($cStyle) = $GUI_CHECKED), _
                    _GUICtrlSlider_GetPos($hHoleSize))
    EndSwitch
EndFunc ;==>_OnNotify

Func _DrawPiePiece($hGraphics, $iX, $iY, $iWidth, $iHeight, $iDepth, $nCount, $Angles)
    Local $hPath, $cX = $iX + ($iWidth / 2), $cY = $iY + ($iHeight / 2), $fDrawn = False
    Local $iStart = Mod($Angles[$nCount], 360), $iSweep = Mod($Angles[$nCount + 1] - $Angles[$nCount] + 360, 360)

; Draw side
    ConsoleWrite(_Now() & @CRLF)
    $hPath = _GDIPlus_GraphicsPathCreate()
    If $iStart < 180 And ($iStart + $iSweep > 180) Then
        _GDIPlus_GraphicsPathAddArc($hPath, $iX, $iY, $iWidth, $iHeight, $iStart, 180 - $iStart)
        _GDIPlus_GraphicsPathAddArc($hPath, $iX, $iY + $iDepth, $iWidth, $iHeight, 180, $iStart - 180)
        _GDIPlus_GraphicsPathCloseFigure($hPath)
        _GDIPlus_GraphicsFillPath($hGraphics, $ahBrush[$nCount][1], $hPath)
        _GDIPlus_GraphicsDrawPath($hGraphics, $ahPen[$nCount], $hPath)
        $fDrawn = True
    EndIf
    If $iStart + $iSweep > 360 Then
        _GDIPlus_GraphicsPathAddArc($hPath, $iX, $iY, $iWidth, $iHeight, 0, $iStart + $iSweep - 360)
        _GDIPlus_GraphicsPathAddArc($hPath, $iX, $iY + $iDepth, $iWidth, $iHeight, $iStart + $iSweep - 360, 360 - $iStart - $iSweep)
        _GDIPlus_GraphicsPathCloseFigure($hPath)
        _GDIPlus_GraphicsFillPath($hGraphics, $ahBrush[$nCount][1], $hPath)
        _GDIPlus_GraphicsDrawPath($hGraphics, $ahPen[$nCount], $hPath)
        $fDrawn = True
    EndIf
    If $iStart < 180 And (Not $fDrawn) Then
        _GDIPlus_GraphicsPathAddArc($hPath, $iX, $iY, $iWidth, $iHeight, $iStart, $iSweep)
        _GDIPlus_GraphicsPathAddArc($hPath, $iX, $iY + $iDepth, $iWidth, $iHeight, $iStart + $iSweep, -$iSweep)
        _GDIPlus_GraphicsPathCloseFigure($hPath)
        _GDIPlus_GraphicsFillPath($hGraphics, $ahBrush[$nCount][1], $hPath)
        _GDIPlus_GraphicsDrawPath($hGraphics, $ahPen[$nCount], $hPath)
    EndIf
    _GDIPlus_GraphicsPathDispose($hPath)

; Draw top
    _GDIPlus_GraphicsFillPie($hGraphics, $iX, $iY, $iWidth, $iHeight, $iStart, $iSweep, $ahBrush[$nCount][0])
    _GDIPlus_GraphicsDrawPie($hGraphics, $iX, $iY, $iWidth, $iHeight, $iStart, $iSweep, $ahPen[$nCount])

EndFunc ;==>_DrawPiePiece

Func _GDIPlus_GraphicsPathCreate($iFillMode = 0)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipCreatePath", "int", $iFillMode, "int*", 0);
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, $aResult[2])
EndFunc ;==>_GDIPlus_GraphicsPathCreate

Func _GDIPlus_GraphicsPathAddLine($hGraphicsPath, $iX1, $iY1, $iX2, $iY2)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipAddPathLine", "hwnd", $hGraphicsPath, "float", $iX1, "float", $iY1, _
            "float", $iX2, "float", $iY2)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsPathAddLine

Func _GDIPlus_GraphicsPathAddArc($hGraphicsPath, $iX, $iY, $iWidth, $iHeight, $iStartAngle, $iSweepAngle)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipAddPathArc", "hwnd", $hGraphicsPath, "float", $iX, "float", $iY, _
            "float", $iWidth, "float", $iHeight, "float", $iStartAngle, "float", $iSweepAngle)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsPathAddArc

Func _GDIPlus_GraphicsPathAddPie($hGraphicsPath, $iX, $iY, $iWidth, $iHeight, $iStartAngle, $iSweepAngle)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipAddPathPie", "hwnd", $hGraphicsPath, "float", $iX, "float", $iY, _
            "float", $iWidth, "float", $iHeight, "float", $iStartAngle, "float", $iSweepAngle)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsPathAddPie

Func _GDIPlus_GraphicsPathCloseFigure($hGraphicsPath)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipClosePathFigure", "hwnd", $hGraphicsPath)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsPathCloseFigure

Func _GDIPlus_GraphicsPathDispose($hGraphicsPath)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipDeletePath", "hwnd", $hGraphicsPath)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsPathDispose

Func _GDIPlus_GraphicsDrawPath($hGraphics, $hPen, $hGraphicsPath)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipDrawPath", "hwnd", $hGraphics, "hwnd", $hPen, "hwnd", $hGraphicsPath)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsDrawPath

Func _GDIPlus_GraphicsFillPath($hGraphics, $hBrush, $hGraphicsPath)
    Local $aResult = DllCall($ghGDIPDll, "int", "GdipFillPath", "hwnd", $hGraphics, "hwnd", $hBrush, "hwnd", $hGraphicsPath)
    If @error Then Return SetError(@error, @extended, 0)
    Return SetError($aResult[0], 0, 0)
EndFunc ;==>_GDIPlus_GraphicsFillPath

Edited by WideBoyDixon
1 person likes this

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Very nicely looking! Great coding also with simple but efficient code :D


Broken link? PM me and I'll send you the file!

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Great work WBD (again)! :D

UEZ


Please don't send me any personal message and ask for support! I will not reply!

Selection of finest graphical examples at Codepen.io

The own fart smells best!
Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯  ٩(●̮̮̃•̃)۶ ٩(-̮̮̃-̃)۶ૐ

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I just tidied up the code a bit. Modified code now in the first post. No significant changes except I'm a bit happier with this version.

WBD

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Great stuff, and well commented.

I will use this in my Survey Application.

Thanks for the lesson.

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Very nice example WBD! :D


My Projects - WindowDarken (Darken except the active window) Yahsmosis Chat Client (Discontinued) StarShooter Game (Red alert! All hands to battlestations!) YMSG Protocol Support (Discontinued) Circular Keyboard and OSK example. (aka Iris KB) Target Screensaver Drive Toolbar Thingy Rollup Pro (Minimize-to-Titlebar & More!) 2D Launcher physics example Ascii Screenshot AutoIt3 Quine Example ("Is a Quine" is a Quine.) USB Lock (Another system keydrive - with a toast.)

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I like it. Thanks for sharing!


♡♡♡

.

eMyvnE

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Realy neat!


Minesweeper

A minesweeper game created in autoit, source available.

_Mouse_UDF

An UDF for registering functions to mouse events, made in pure autoit.

2D Hitbox Editor

A 2D hitbox editor for quick creation of 2D sphere and rectangle hitboxes.

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simply amazing :D

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Thanks for all the comments. See the original post for a new version which does proper GDI+ drawing of the pie pieces instead of "cheating". There's also the possibility to display a 2D "donut" chart with a configurable hole size :D

WBD

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Thanks for all the comments. See the original post for a new version which does proper GDI+ drawing of the pie pieces instead of "cheating". There's also the possibility to display a 2D "donut" chart with a configurable hole size :D

WBD

Wow, looks even better now!

Btw, use constants for $PI / 180 and 180 / $PI instead of calculating them everytime! :D

UEZ


Please don't send me any personal message and ask for support! I will not reply!

Selection of finest graphical examples at Codepen.io

The own fart smells best!
Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯  ٩(●̮̮̃•̃)۶ ٩(-̮̮̃-̃)۶ૐ

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Amazing :D

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Nice! :D


Só o que posso lhe dizer, bom é quando faz mal!My work:Au3Irrlicht - Irrlicht for AutoItMsAgentLib - An UDF for MSAgentAu3GlPlugin T2 - A 3D plugin for AutoIt...OpenGl Plugin - The old version of Au3GlPlugin.MAC Address Changer - Changes the MAC AddressItCopter - A dragonfly R/C helicopter simulator[center] VW Bug user[/center]Pinheiral (Pinewood) city: http://pt.wikipedia.org/wiki/Pinheiral

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classic and perfect. Nice


-jaenster

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