如何实现鼠标在屏幕上两点移动时的抛物线轨迹

cg372101

请教如何实现鼠标在屏幕上的两点（x0，y0）到（x1，y1）之间移动时的抛物线轨迹，其中暂以（x0，y0）为抛物线的顶点，抛物线的开口向左、右、上、下均可，当然若 x0＝x1 或 y0=y1 则做水平或垂直方向上的直线移动（轨迹）

cg372101

烦请autoit高手帮忙想想辙

macran

2点能形成抛物线? 2点永远是一线吧. (y1-y0)/(x1-x0)是斜率. 可能没懂你的意思.你先用2点画个抛物线给大家看看.也许知道你说的是什么

netegg

函数图象吗好办的很

zisedefeng

我也想知道！

header

mousemov有速度控制啊 只要不是0  就有轨迹啊

936308283

貌似不是很难吧

netegg

[au3]#include <Math.au3>
#include <GuiConstantsEx.au3>
#include <GDIPlus.au3>

Opt('MustDeclareVars', 1)

_Main()

Func _Main()
        Local $hGUI, $hWnd, $hGraphic, $hBrush, $hAsymPen, $hFormat, $hFamily, $hFont, $tLayout, $hPen
        Local $aPoint[10000][3], $aPoint2[10000][3], $j = 1

        ; 创建界面
        $hGUI = GUICreate("Parabola", 400, 300)
        $hWnd = WinGetHandle("Parabola")
        GUISetState()

        _GDIPlus_Startup()
        $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)
        $hBrush = _GDIPlus_BrushCreateSolid(0xFF000000)
        $hFormat = _GDIPlus_StringFormatCreate()
        $hFamily = _GDIPlus_FontFamilyCreate("Arial")
        $hFont = _GDIPlus_FontCreate($hFamily, 8, 2)
        $tLayout = _GDIPlus_RectFCreate(200, 150, 50, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, 'O(0,0)', $hFont, $tLayout, $hFormat, $hBrush)
        $tLayout = _GDIPlus_RectFCreate(20, 20, 200, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, '', $hFont, $tLayout, $hFormat, $hBrush)
        $tLayout = _GDIPlus_RectFCreate(100, 150, 50, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, '-1', $hFont, $tLayout, $hFormat, $hBrush)
        $tLayout = _GDIPlus_RectFCreate(300, 150, 50, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, '1', $hFont, $tLayout, $hFormat, $hBrush)
        $hPen = _GDIPlus_PenCreate()
        _GDIPlus_GraphicsDrawLine($hGraphic, 0, 150, 400, 150, $hPen)
        _GDIPlus_GraphicsDrawLine($hGraphic, 200, 0, 200, 300, $hPen)
        $hAsymPen = _GDIPlus_PenCreate()
        _GDIPlus_PenSetDashStyle($hAsymPen, $GDIP_DASHSTYLEDASH)
        _GDIPlus_GraphicsDrawLine($hGraphic, 100, 0, 100, 300, $hAsymPen)
        _GDIPlus_GraphicsDrawLine($hGraphic, 300, 0, 300, 300, $hAsymPen)

        $aPoint[0][0] = 200
        $aPoint2[0][0] = 200
        For $i = 0 To 200 Step 1
                $aPoint[$j][0] = $i * 2 + 200
                $aPoint[$j][1] = 150 - Sqrt($i * 2)
                $aPoint2[$j][0] = $i * 2 + 200
                $aPoint2[$j][1] = 150 + Sqrt($i * 2)
                $j += 1
        Next
        _GDIPlus_GraphicsDrawCurve($hGraphic, $aPoint)
        _GDIPlus_GraphicsDrawCurve($hGraphic, $aPoint2)
       
        ; 循环至用户退出
        Do
        Until GUIGetMsg() = $GUI_EVENT_CLOSE

        ; 清除资源
        _GDIPlus_PenDispose($hPen)
        _GDIPlus_PenDispose($hAsymPen)
        _GDIPlus_FontDispose($hFont)
        _GDIPlus_FontFamilyDispose($hFamily)
        _GDIPlus_StringFormatDispose($hFormat)
        _GDIPlus_BrushDispose($hBrush)
        _GDIPlus_GraphicsDispose($hGraphic)
        _GDIPlus_Shutdown()

EndFunc   ;==>_Main
[/au3]

netegg

[au3]
#include <GuiConstantsEx.au3>
#include <GDIPlus.au3>

Opt('MustDeclareVars', 1)

_Main()

Func _Main()
        Local $hGUI, $hWnd, $hGraphic, $hBrush, $hAsymPen, $hFormat, $hFamily, $hFont, $tLayout, $hPen
        Local $aPoint[10000][3], $aPoint2[10000][3], $j = 1

        ; 创建界面
        $hGUI = GUICreate("Parabola", 400, 300)
        $hWnd = WinGetHandle("Parabola")
        GUISetState()

        _GDIPlus_Startup()
        $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)
        $hBrush = _GDIPlus_BrushCreateSolid(0xFF000000)
        $hFormat = _GDIPlus_StringFormatCreate()
        $hFamily = _GDIPlus_FontFamilyCreate("Arial")
        $hFont = _GDIPlus_FontCreate($hFamily, 8, 2)
        $tLayout = _GDIPlus_RectFCreate(200, 150, 50, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, 'O(0,0)', $hFont, $tLayout, $hFormat, $hBrush)
        $tLayout = _GDIPlus_RectFCreate(20, 20, 200, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, '', $hFont, $tLayout, $hFormat, $hBrush)
        $tLayout = _GDIPlus_RectFCreate(100, 150, 50, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, '-1', $hFont, $tLayout, $hFormat, $hBrush)
        $tLayout = _GDIPlus_RectFCreate(300, 150, 50, 20)
        _GDIPlus_GraphicsDrawStringEx($hGraphic, '1', $hFont, $tLayout, $hFormat, $hBrush)
        $hPen = _GDIPlus_PenCreate()
        _GDIPlus_GraphicsDrawLine($hGraphic, 0, 150, 400, 150, $hPen)
        _GDIPlus_GraphicsDrawLine($hGraphic, 200, 0, 200, 300, $hPen)
        $hAsymPen = _GDIPlus_PenCreate()
        _GDIPlus_PenSetDashStyle($hAsymPen, $GDIP_DASHSTYLEDASH)
        _GDIPlus_GraphicsDrawLine($hGraphic, 100, 0, 100, 300, $hAsymPen)
        _GDIPlus_GraphicsDrawLine($hGraphic, 300, 0, 300, 300, $hAsymPen)

        $aPoint[0][0] = 200
        $aPoint2[0][0] = 200
        For $i = 0 To 200 Step 1
                $aPoint[$j][0] = $i * 2 + 200
                $aPoint[$j][1] = 150 - Sqrt($i * 2)
                $aPoint2[$j][0] = $i * 2 + 200
                $aPoint2[$j][1] = 150 + Sqrt($i * 2)
                $j += 1
        Next
        _GDIPlus_GraphicsDrawCurve($hGraphic, $aPoint)
        _GDIPlus_GraphicsDrawCurve($hGraphic, $aPoint2)
       
        ; 循环至用户退出
        Do
        Until GUIGetMsg() = $GUI_EVENT_CLOSE

        ; 清除资源
        _GDIPlus_PenDispose($hPen)
        _GDIPlus_PenDispose($hAsymPen)
        _GDIPlus_FontDispose($hFont)
        _GDIPlus_FontFamilyDispose($hFamily)
        _GDIPlus_StringFormatDispose($hFormat)
        _GDIPlus_BrushDispose($hBrush)
        _GDIPlus_GraphicsDispose($hGraphic)
        _GDIPlus_Shutdown()

EndFunc   ;==>_Main
[/au3]