//程序5-1 曲線與形狀繪制 即繪制了一個笑臉

///*

#include <highgui.h>
#include<cv.h>
#include<iostream.h>
#define thickness 2						//線條粗細
#define line_type CV_AA				// CV_AA表示抗鋸齒類型直線
void main()
{
	//CV_RGB( 255., 158., 97. )三個分量是按R，G，B順序排列的
	CvScalar color=CV_RGB( 255., 158., 97. );			
	CvPoint pt1_Rect;					//確定外圍矩形畫框的兩個點（對角線上兩個點）
	CvPoint pt2_Rect;
	CvPoint center;					//圖像中心既是笑臉的中心	
	int radius=0;						//笑臉的半徑
	//---------------------眼睛有關的變量---------------------------------
	CvPoint center_l_eye;				//左眼的中心
	CvPoint center_r_eye;				//右眼的中心	
	CvSize  axes_eye;					//左右眼的大小
	double angle_l_eye=15;				//左眼的偏轉角：正的表示逆時針轉
	double angle_r_eye=-15;			//右眼的偏轉角：負數表示順時針轉
	
	double start_angle_eye=0.;
	double end_angle_eye=360.;
	//---------------------嘴巴有關的變量-----------------------------------
	CvPoint pt1_l_mouth;				//笑嘴的嘴角的點
	CvPoint pt2_l_mouth;
	CvPoint pt1_r_mouth;
	CvPoint pt2_r_mouth;
	CvSize  axes_mouth;				//嘴的大小			
	double angle_mouth=0.;				//嘴的偏轉角
	double start_angle_mouth=0.;		//畫嘴的圓弧的起始角
	double end_angle_mouth=360.;		//畫嘴的圓弧的終止角

	//--------繪制笑臉的目的圖像img的初始化-------
	IplImage* img = cvCreateImage( cvSize(600,600), IPL_DEPTH_8U, 3 );
	cvNamedWindow( "image", CV_WINDOW_AUTOSIZE );

	//----------------------------外圍矩形畫框---------------------------
	pt1_Rect.x=0;
	pt1_Rect.y=0;
	pt2_Rect.x=600;
	pt2_Rect.y=600;
	color=CV_RGB( 97., 158., 255. );
	//------------------- cvRectangle畫矩形-------------
	cvRectangle(img, pt1_Rect, pt2_Rect, color, CV_FILLED, line_type, 0);
	
//----------------------------笑臉的輪廓---------------------------

	color= CV_RGB ( 255., 158., 97. );	//顏色為黃色
	center.x=300;
	center.y=300;
	radius=200;						//笑臉半徑
	//------------------- cvCircle畫圓形即為笑臉的輪廓-------------
	cvCircle(img,center, radius, color, CV_FILLED, line_type, 0);

//----------------------------畫眼睛---------------------------
	color= CV_RGB ( 156., 25., 255. );	//眼睛顏色為紫色
	center_l_eye.x=240;
	center_l_eye.y=200;
	center_r_eye.x=360;
	center_r_eye.y=200;
	axes_eye.width=16;
	axes_eye.height=30;
	angle_l_eye=10;
	angle_r_eye=-5;
	start_angle_eye=0.;				//繪制整個橢圓時起始角為0°，終止角為360°
	end_angle_eye=360.;
	//----------左眼----------- cvEllipse畫橢圓------------
cvEllipse(img, center_l_eye, axes_eye, angle_l_eye, start_angle_eye, end_angle_eye, color, CV_FILLED, line_type, 0);
	//----------右眼----------- cvEllipse畫橢圓---------------
cvEllipse(img, center_r_eye, axes_eye, angle_r_eye, start_angle_eye, end_angle_eye, color, CV_FILLED, line_type, 0); 
//----------------------------畫嘴巴---------------------------
	color= CV_RGB ( 255., 255., 0. );	//嘴巴顏色為黃色

	pt1_l_mouth.y=300;
	pt1_l_mouth.x=150;
	pt2_l_mouth.y=270;
	pt2_l_mouth.x=180;

	pt1_r_mouth.y=270;
	pt1_r_mouth.x=400;
	pt2_r_mouth.y=300;
	pt2_r_mouth.x=430;
	axes_mouth.width=130;
	axes_mouth.height=100;
	start_angle_mouth=150.;
	end_angle_mouth=347.;
	angle_mouth=10.;
	//----左邊的嘴角的線段----
	cvLine(img, pt1_l_mouth, pt2_l_mouth, color, 4, line_type, 0);
	//---右邊的嘴角的線段---
	cvLine(img, pt1_r_mouth, pt2_r_mouth, color, 4, line_type, 0);
	//---嘴巴的圓弧----------
	cvEllipse(img, center, axes_mouth, angle_mouth, start_angle_mouth, end_angle_mouth, color, 4, line_type, 0);

	cvShowImage( "image", img );
	cvWaitKey(0);
	cvReleaseImage(&img);
}


//*/