C语言中的pieslice（）函数-yiteyi-C++库

pieslice（） 绘制并填充以（x，y）为中心且给定半径r的饼图切片。该切片从s_角移动到e_角，e_角是饼图切片的起始角和结束角。饼图切片的角度以度为单位，并按逆时针方向测量。

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语法：

void pieslice(int x, int y, int s_angle, 
                    int e_angle, int r);

where,
(x, y) is center of the circle.
r is the radius of the circle.
s_angle and e_angle are the starting 
and ending angles respectively.

例如：

Input : x = 300, y = 300, s_angle = 0 ,
        e_angle = 120, r = 150
Output :

Input : x = 300, y = 300, s_angle = 30 ,
        e_angle = 100, r = 200
Output :

下面是PieSicle（）函数的实现：

                     // C Implementation for drawing pieslice                   
                     #include <graphics.h>                   
                             
                     // driver code                   
                     int                               main()                   
                     {                   
                                         // gm is Graphics mode which                   
                                         // is a computer display mode                   
                                         // that generates image using pixels.                   
                                         // DETECT is a macro defined in                   
                                         // "graphics.h" header file                   
                                         int                               gd = DETECT, gm;                   
                             
                                         // initgraph initializes the                   
                                         // graphics system by loading a                   
                                         // graphics driver from disk                   
                                         initgraph(&gd, &gm,                               ""                               );                   
                             
                                         // pieslice function                   
                                         pieslice(300, 300, 0, 120, 150);                   
                             
                                         getch();                   
                             
                                         // closegraph function closes the                   
                                         // graphics mode and deallocates all                   
                                         // memory allocated by graphics system .                   
                                         closegraph();                   
                             
                                         return                               0;                   
                     }                   

输出：

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