//?Circle.cpp:?implementation?of?the?CCircle?class.
//
//////////////////////////////////////////////////////////////////////
#include?“Circle.h“
#include?
#include?“math.h“
#include?“Dot.h“
//////////////////////////////////////////////////////////////////////
//?Construction/Destruction
//////////////////////////////////////////////////////////////////////
extern?int?windowWidth?windowHeight;
CCircle::CCircle（）
{
	r=0.0;
	angle=0;
	pi=acos（-1）;
	flag_circle=0;
	finish_flag=false;
	X_Step?=?10.0f;????????????
	Y_Step?=?10.0f;
}

CCircle::~CCircle（）
{
	
}
void?CCircle::Draw（）
{
	if（!finish_flag&&amm.m_p[0]!=0&&amm.m_p[1]!=0）
	{
		r=（am.m_p[0]-amm.m_p[0]）*（am.m_p[0]-amm.m_p[0]）+（am.m_p[1]-amm.m_p[1]）*（am.m_p[1]-amm.m_p[1]）;
????	r=sqrt（r）;
	}?
	myArc_Full（am.m_p[0]am.m_p[1]rr0360）;

}
int??CCircle::Mouse（int?btn?int?state?int?x?int?y）
{
	if（!flag_circle）
	{
		am.m_p[0]=x;
		am.m_p[1]=windowHeight-y;
		flag_circle=1;
		return?1;
	}
	else?if（flag_circle==1?）?
	{
		amm.m_p[0]?=?x;
		amm.m_p[1]=?windowHeight-y;
		flag_circle?=?0;
		glutPostRedisplay（）;
		return?0;
	}
}
void?CCircle::mousemove（int?x?int?y）
{
	amm.m_p[0]?=?x;
	amm.m_p[1]?=?windowHeight-y;
	glutPostRedisplay（）;	
}
void?CCircle::myArc_Full（float?xfloat?yfloat?afloat?bint?start_angleint?end_angle）
{
	???float?pxpy;
	???glBegin（GL_TRIANGLE_FAN）;
	???glColor3fv（m_color）;
	???glVertex2f（xy）;
	???for（angle?=?start_angle;?angle?<=?end_angle;?angle?=?angle?+?1）
	???{
		???px?=?x?+?a*cos（angle/180.0?*pi）;
		???py?=?y?+?b*sin（angle/180.0?*pi）;
		???glVertex2f（pxpy）;
	???}
	???glEnd（）;
	???
}
void?CCircle::SetColor（float?Rfloat?Gfloat?B）
{
	m_color[0]=R;
	m_color[1]=G;
	m_color[2]=B;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1774??2011-04-17?11:04??Ball?1.7\SportBall\Circle.cpp

?????文件????????934??2011-03-30?15:53??Ball?1.7\SportBall\Circle.h

?????文件????????326??2011-03-29?10:57??Ball?1.7\SportBall\cursor1.cur

?????文件????????866??2011-03-29?10:39??Ball?1.7\SportBall\Dot.cpp

?????文件????????646??2011-03-29?10:39??Ball?1.7\SportBall\Dot.h

?????文件????????456??2011-03-29?10:57??Ball?1.7\SportBall\resource.h

?????文件??????17464??2011-03-31?13:03??Ball?1.7\SportBall\script1.aps

?????文件???????1616??2011-03-29?10:57??Ball?1.7\SportBall\script1.rc

?????文件???????4782??2011-04-17?11:16??Ball?1.7\SportBall\SportBall.cpp

?????文件???????4562??2011-03-29?10:39??Ball?1.7\SportBall\SportBall.dsp

?????文件????????541??2011-03-29?10:37??Ball?1.7\SportBall\SportBall.dsw

?????文件?????140288??2011-04-21?18:13??Ball?1.7\SportBall\SportBall.ncb

?????文件??????53760??2011-04-21?18:13??Ball?1.7\SportBall\SportBall.opt

?????文件???????1698??2011-04-21?18:12??Ball?1.7\SportBall\SportBall.plg

?????目錄??????????0??2011-04-22?20:05??Ball?1.7\SportBall

?????目錄??????????0??2011-04-21?18:12??Ball?1.7

-----------?---------??----------?-----??----

???????????????229713????????????????????16