纸牌翻转动画 [英] Playing card flip animation

问题描述

你知道有免费的组件/库，它允许实现3D翻页效果的？

Do you know of any free components/libraries, which allow to achieve a 3D flip effect?

示范这里：<一href=\"http://www.snorkl.tv/2010/12/easy-breezy-3d-card-flip-effect-with-flash-as3-and-our-good-buddy-timelinemax/\"相对=nofollow> snorkl.tv

推荐答案

这样的事情可能会做同样的效果（只是一个试图以显示如何可以这样做，也没有那么precise，但它只是为了好玩因为你已经问了库或组件）。其原理是基于调整大小的rectnagle和中心的在卡正在与 StretchDraw 函数呈现的颜料盒：

Something like this might do the similar effect (just another attempt to show how this could be done, also not so precise, but it's just for fun since you've asked for a library or component). The principle is based on a rectnagle that is being resized and centered in the paint box where the card is being rendered with the StretchDraw function:

Unit1.pas 的

Unit1.pas

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls, PNGImage;

type
  TCardSide = (csBack, csFront);
  TForm1 = class(TForm)
    Timer1: TTimer;
    Timer2: TTimer;
    PaintBox1: TPaintBox;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure Timer2Timer(Sender: TObject);
    procedure PaintBox1Click(Sender: TObject);
    procedure PaintBox1Paint(Sender: TObject);
  private
    FCardRect: TRect;
    FCardSide: TCardSide;
    FCardBack: TPNGImage;
    FCardFront: TPNGImage;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  FCardSide := csBack;
  FCardRect := PaintBox1.ClientRect;
  FCardBack := TPNGImage.Create;
  FCardBack.LoadFromFile('tps2N.png');
  FCardFront := TPNGImage.Create;
  FCardFront.LoadFromFile('Ey3cv.png');
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  FCardBack.Free;
  FCardFront.Free;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  if FCardRect.Right - FCardRect.Left > 0 then
  begin
    FCardRect.Left := FCardRect.Left + 3;
    FCardRect.Right := FCardRect.Right - 3;
    PaintBox1.Invalidate;
  end
  else
  begin
    Timer1.Enabled := False;
    case FCardSide of
      csBack: FCardSide := csFront;
      csFront: FCardSide := csBack;
    end;
    Timer2.Enabled := True;
  end;
end;

procedure TForm1.Timer2Timer(Sender: TObject);
begin
  if FCardRect.Right - FCardRect.Left < PaintBox1.ClientWidth then
  begin
    FCardRect.Left := FCardRect.Left - 3;
    FCardRect.Right := FCardRect.Right + 3;
    PaintBox1.Invalidate;
  end
  else
    Timer2.Enabled := False;
end;

procedure TForm1.PaintBox1Click(Sender: TObject);
begin
  Timer1.Enabled := False;
  Timer2.Enabled := False;
  FCardRect := PaintBox1.ClientRect;
  Timer1.Enabled := True;
  PaintBox1.Invalidate;
end;

procedure TForm1.PaintBox1Paint(Sender: TObject);
begin
  case FCardSide of
    csBack: PaintBox1.Canvas.StretchDraw(FCardRect, FCardBack);
    csFront: PaintBox1.Canvas.StretchDraw(FCardRect, FCardFront);
  end;
end;

end.

Unit1.dfm 的

Unit1.dfm

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 203
  ClientWidth = 173
  Color = clBtnFace
  DoubleBuffered = True
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  Position = poScreenCenter
  OnCreate = FormCreate
  OnDestroy = FormDestroy
  PixelsPerInch = 96
  TextHeight = 13
  object PaintBox1: TPaintBox
    Left = 48
    Top = 40
    Width = 77
    Height = 121
    OnClick = PaintBox1Click
    OnPaint = PaintBox1Paint
  end
  object Timer1: TTimer
    Enabled = False
    Interval = 10
    OnTimer = Timer1Timer
    Left = 32
    Top = 88
  end
  object Timer2: TTimer
    Enabled = False
    Interval = 10
    OnTimer = Timer2Timer
    Left = 88
    Top = 88
  end
end

卡的

Cards

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