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batrang.c

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  • batrang.c 1.52 KiB
    #include <stdio.h>
    #include <stdlib.h>
    #include <graphics.h>
    #include <math.h>
    
    void bezier (int x[4], int y[4])
    {
    
        int i;
        double t;
        double xm,ym;
    
    	xm = getmaxx()/2;
    	ym = getmaxy()/2;
    
    	for (i=0; i<4; i++)
    		putpixel ((xm+x[i]), (ym-y[i]), YELLOW);
    
        for (t = 0.0; t < 1.0; t += 0.0001)
        {
    		double xt = pow (1-t, 3) * x[0] + 3 * t * pow (1-t, 2) * x[1] +
    				3 * pow (t, 2) * (1-t) * x[2] + pow (t, 3) * x[3];
    
    		double yt = pow (1-t, 3) * y[0] + 3 * t * pow (1-t, 2) * y[1] +
    				3 * pow (t, 2) * (1-t) * y[2] + pow (t, 3) * y[3];
    
    				xt += xm;
    				yt = ym - yt;
    		putpixel (xt,yt, WHITE);
        }
    
        return;
    }
    
    void main()
    {
    	int x[4], y[4];
    	int xm,ym;
    	int gd = DETECT, gm;
    
    	initgraph(&gd, &gm, "");
    
    	xm = getmaxx()/2;
    	ym = getmaxy()/2;
    	
    	x[0]=xm-20;	y[0]=ym;
    	x[1]=xm-100;	y[1]=ym;
    	x[2]=xm+20;	y[2]=ym;
    	x[3]=xm+100;	y[3]=ym;
    	
    	line(x[0],y[0],x[1],y[1]);
    	line(x[2],y[2],x[3],y[3]);
    	
    	//Bat left top wing
    	x[0]=-100;	y[0]=0;
    	x[1]=-60;	y[1]=-10;
    	x[2]=-60;	y[2]=-20;
    	x[3]=-60;	y[3]=-30;
        bezier (x,y);
    
    	//Bat left bottom wing
    	x[0]=-60;	y[0]=-30;
    	x[1]=-40;	y[1]=-32;
    	x[2]=-20;	y[2]=-34;
    	x[3]=0;		y[3]=-50;
        bezier (x,y);
    
    	//Bat right top wing
    	x[0]=100;	y[0]=0;
    	x[1]=60;	y[1]=-10;