直接貼代碼吧，很好看，色彩很絢麗。
#include <stdio.h>
#include <stdlib.h>
#include "highgui.h"
#include "cv.h"
#include "cxcore.h"
#include<math.h>
#define M 400
#define max_times 200
int flag=0;
double XMax=2.0;
double XMin=-2.0;
double YMax=2.0;
double YMin=-2.0;
IplImage* workImg;
IplImage* imgshow;
CvRect ROI_rect;
CvScalar sca;
int judge(double a,double b);
void on_mouse(int event, int x,int y,int flags,void* param);
int main()
{
workImg=cvCreateImage (cvSize(M,M),8,3);
imgshow=cvCreateImage (cvSize(M,M),8,3);
cvNamedWindow ("Opencv", 1);//能否拉伸
cvMoveWindow("Opencv",0,0);//窗口在桌面的位置
draw(M/2,M/2);
printf("操作說明：\n1、左鍵放大\n2、滾輪平移\n3、右鍵恢復");
cvNamedWindow("Opencv",CV_WINDOW_AUTOSIZE);
cvSetMouseCallback("Opencv",on_mouse,NULL);
cvWaitKey(0);
cvDestroyWindow("Opencv");
cvReleaseImage(&workImg);
cvReleaseImage(&imgshow);
return 0;
}
int judge(double re,double im)
{
double x=0,y=0,X,Y;
int i=0;
for(i=0;x*x+y*y<=4;i++)
{
X=x*x-y*y+re;
Y=x*y*2+im;
x=X;
y=Y;
if(i==max_times)
break;
}
return i;
}
void on_mouse(int event, int x,int y,int flags,void* param)
{
int thickness=2;
float real,imaginary;
int left,right,up,down;
int a,b,c;//前景色
int d,e,f;//背景色
double DX=XMax-XMin;
double DY=YMax-YMin;
double offX=DX/M;
double offY=DY/M;
CvPoint p1,p2;
if(event==CV_EVENT_MBUTTONDOWN)//中鍵單擊平移
draw(x,y);
if(event==CV_EVENT_RBUTTONUP)//右鍵單擊返回
{
draw(M/2,M/2);
XMax=2.0;
XMin=-2.0;
YMax=2.0;
YMin =-2.0;
DX=XMax-XMin;
DY=YMax-YMin;
offX=DX/M;
offY=DY/M;
}
if(event==CV_EVENT_LBUTTONDOWN)//
{
ROI_rect.x=x;//當前鼠標位置（x，y）
ROI_rect.y=y;
flag=1;
}
if(flag&&event==CV_EVENT_MOUSEMOVE)//鼠標狀態
{
cvCopy(workImg,imgshow,NULL);//不斷更新顯示圖像
p1=cvPoint(ROI_rect.x,ROI_rect.y);//第一個點
p2=cvPoint(x,x-ROI_rect.x+ROI_rect.y);
cvRectangle(imgshow,p1,p2,CV_RGB(0,500,150),thickness,CV_AA,0);
cvShowImage("Opencv",imgshow);
}
if(flag&&event==CV_EVENT_LBUTTONUP)
{
flag=0;
p2.x=x;
p2.y=x-ROI_rect.x+ROI_rect.y;
p1.x=ROI_rect.x;
p1.y=ROI_rect.y;
left=min(p1.x,p2.x);
right=max(p1.x,p2.x);
up=min(p1.y,p2.y);
down=max(p1.y,p2.y);
cvShowImage("Opencv",workImg);
cvWaitKey (1);
XMax=offX*right+XMin;
XMin=offX*left+XMin;
YMax=offY*down+YMin;
YMin=offY*up+YMin;
drawmandelbrot();
cvShowImage("Opencv",workImg);
}
cvWaitKey(20);
}
void draw(int x,int y)
{
double real,imaginary,i;
int m,n;
int a,b,c;//前景色
int d,e,f;//背景色
for(m=0;m<M;m++)
for(n=0;n<M;n++)
{
real=(m-x)/100.0;
imaginary=(n-y)/100.0;
i=judge(real,imaginary);
if((i-max_times)==0)
{
a=m;
b=n;
c=m+n;
sca.val[0]=a;
sca.val[1]=b;
sca.val[2]=c;
cvSet2D(workImg,n,m,sca);
}
else//不在集合內
{
d=(sin(6*i))*60+0.5*abs(200-m)+70;
e=(cos(5*i))*60+0.5*abs(200-n)+70;
f=(sin(100*i))*60+0.5*abs(200-n)+70;
sca.val[0]=d;
sca.val[1]=e;
sca.val[2]=f;
cvSet2D(workImg,n,m,sca);
}
}
cvShowImage("Opencv",workImg);
}
void drawmandelbrot()
{
int m,n;
int a,b,c;//前景色
int d,e,f;//背景色
int i;
double real,imaginary;
double deltaX=(XMax-XMin)/M;
double deltaY=(YMax-YMin)/M;
for(m=0;m<M;m++)
{
for(n=0;n<M;n++)
{
i=judge(real,imaginary);
real=XMin+m*deltaX;
imaginary=YMin+n*deltaY;
CvScalar sca;
if(judge(real,imaginary)-200==0)
{
a=m;
b=n;
c=n+m;
sca.val[0]=a;
sca.val[1]=b;
sca.val[2]=c;
cvSet2D(workImg,n,m,sca);
}
else
{
d=(sin(6*i))*60+0.5*abs(200-m)+70;
e=(cos(5*i))*60+0.5*abs(200-n)+70;
f=(sin(100*i))*60+0.5*abs(200-n)+70;
sca.val[0]=d;
sca.val[1]=e;
sca.val[2]=f;
cvSet2D(workImg,n,m,sca);
}
}
}
}