各位工程師好 我有個計數器應用的問題 希望有人能幫忙解答一下,

我利用一個圓 0至360度 分成8個等份 ex:90度~135度(其中一等份),
在程式中進行影像處理 當我的指標落在 ex:90度~135度時,

利用計數器 重0秒開始 至3秒時,則 Edit1->Text = "1"; 判斷此範圍為 "1"
若在3秒還沒到 指標移動至其他角度範圍時 則Edit1->Text = "0";
並且計數器重新由0開始算起

只有在指標落在 某個角度範圍內滿3秒 才顯示出範圍1~8(8等份)
若不足3秒 就離開此範圍再重新由0秒開始算起

我現在卡在不知如何離開某角度範圍後 時間再重0秒開始算起
因為時間會一直算下去 希望有高手能幫忙解答

非常謝謝!!

------
.

解題測試程式碼下載:

http://delphi.ktop.com.tw/board.php?cid=31&fid=79&tid=90848


[code cpp]
//---------------------------------------------------------------------------
#ifndef fMainH
#define fMainH
//---------------------------------------------------------------------------
#include
#include
#include
#include <Forms.hpp><br />#include
//---------------------------------------------------------------------------
class TForm1;//pre-declaration
//---------------------------------------------------------------------------
class TCountDownThread : public TThread
{
protected:
TForm1 *FOwner;
bool IsTimeout;
void __fastcall Execute(void);
void __fastcall UpdateVCL(void);
public:
__fastcall TCountDownThread(TForm1* Owner);
};
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:
TTimer *Timer1;
void __fastcall FormCreate(TObject *Sender);
void __fastcall Timer1Timer(TObject *Sender);
void __fastcall FormClose(TObject *Sender, TCloseAction &Action);
private:
int FAngle;
int FArea;
unsigned int FCountDown[8];
void __fastcall SetAngle(int Value);
void __fastcall SetArea(int Value);
int __fastcall GetCountDown(int Index);
protected:
TCountDownThread *CountDownThread;
public:
TLabel* Labels[8];
__fastcall TForm1(TComponent* Owner);
__property int Angle = {read=FAngle, write=SetAngle};
__property int Area = {read=FArea, write=SetArea};
__property int CountDown[int Index] = {read=GetCountDown};
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif
[/code]

[code cpp]
//---------------------------------------------------------------------------
#include
#pragma hdrstop
#include "fMain.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
int TIME_OUT = 3000; //3秒
//---------------------------------------------------------------------------
__fastcall TCountDownThread::TCountDownThread(TForm1* Owner): TThread(true)
{
FOwner = Owner;
FreeOnTerminate = false;
Resume();
}
//---------------------------------------------------------------------------
void __fastcall TCountDownThread::Execute(void)
{
while(!Terminated){
int i = FOwner->Area;
unsigned int c = FOwner->CountDown[i];
IsTimeout = (c>0) && (GetTickCount()>c);
Synchronize(UpdateVCL);
Application->ProcessMessages();
Sleep(10);
}
}
//---------------------------------------------------------------------------
void __fastcall TCountDownThread::UpdateVCL(void)
{
TColor color;
AnsiString S;
unsigned diff;
for(int i=0; i<8; i ){
if(i==FOwner->Area){
diff = GetTickCount()-FOwner->CountDown[i];
S = IntToStr(diff);
if(IsTimeout) color = clRed;
else color = clBlue;
}else{
S = "";
color = clGray;
}
FOwner->Labels[i]->Caption = S;
FOwner->Labels[i]->Color = color;
FOwner->Labels[i]->Update();
}
}
//---------------------------------------------------------------------------
//
//
//
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner): TForm(Owner)
{
Randomize();
memset(&FCountDown,0,sizeof(FCountDown));
FAngle = 0;
FArea = 0;
FCountDown[0] = GetTickCount() TIME_OUT;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
int W = 50;
int H = 30;
TRect R = Rect(10,20,10 W,20 H);
for(int i=0; i<8; i ){
Labels[i] = new TLabel(this);
Labels[i]->Parent = this;
Labels[i]->AutoSize = false;
Labels[i]->Transparent = false;
Labels[i]->Alignment = taCenter;
Labels[i]->Layout = tlCenter;
Labels[i]->Color = clBlack;
Labels[i]->Font->Color = clWhite;
Labels[i]->BoundsRect = R;
OffsetRect(R, W 1, 0);
}
CountDownThread = new TCountDownThread(this);
Timer1->Interval = TIME_OUT;
Timer1->Enabled = true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormClose(TObject *Sender, TCloseAction &Action)
{
if(CountDownThread){
Timer1->Enabled = false;
CountDownThread->Terminate();
CountDownThread->WaitFor();
delete CountDownThread;
}
}
//---------------------------------------------------------------------------
int __fastcall TForm1::GetCountDown(int Index)
{
if(Index<0||Index>7) return 0;
else return FCountDown[Index];
}
//---------------------------------------------------------------------------
void __fastcall TForm1::SetAngle(int Value)
{
Value = Value % 360;
if(Value!=FAngle){
FAngle = Value;
Area = FAngle / 45;
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::SetArea(int Value)
{
if(Value!=FArea){
FCountDown[FArea] = 0; //Reset
FCountDown[Value] = GetTickCount() TIME_OUT; //設定倒數秒數
FArea = Value;
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Timer1Timer(TObject *Sender)
{
this->Angle = random(MaxInt) % 360;
//改變 Timer1 的 Interval
Timer1->Interval = random(TIME_OUT) TIME_OUT/2;
}
//---------------------------------------------------------------------------
[/code]

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