C语言中的setfillstyle（）和floodfill（）-yiteyi-C++库

头文件显示图形。h包含 setfillstyle（） 设置当前填充图案和填充颜色的函数。填海函数用于填充封闭区域。当前填充图案和填充颜色用于填充该区域。

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语法：

void setfillstyle(int pattern, int color)

void floodfill(int x, int y, int border_color)

例如：

Input : pattern = HATCH_FILL, Color = RED 
        circle : x = 250, y = 250, radius = 100 
        floodfill : x = 250, y = 250, border color =15
Output : 


Input : pattern = LTSLASH_FILL, Color = RED
       rectangle : left = 200, top = 200, right = 450, bottom = 450
       floodfill : x = 201, y = 201, border_color = 15
Output :

下表显示了与颜色对应的INT值：

COLOR               INT VALUES
-------------------------------
BLACK                   0
BLUE                    1
GREEN                   2
CYAN                    3   
RED                     4
MAGENTA                 5
BROWN                   6 
LIGHTGRAY               7 
DARKGRAY                8
LIGHTBLUE               9
LIGHTGREEN             10
LIGHTCYAN              11
LIGHTRED               12
LIGHTMAGENTA           13
YELLOW                 14
WHITE                  15

下表显示了与模式对应的INT值：

PATTERN              INT VALUES
-------------------------------
EMPTY_FILL               0
SOLID_FILL               1
LINE_FILL                2
LTSLASH_FILL             3   
SLASH_FILL               4
BKSLASH_FILL             5
LTBKSLASH_FILL           6 
HATCH_FILL               7 
XHATCH_FILL              8
INTERLEAVE_FILL          9
WIDE_DOT_FILL           10
CLOSE_DOT_FILL          11
USER_FILL               12

下面是setfillstyle（）和floodfill（）函数的实现：

                     // C Implementation for setfillstyle                   
                     // and floodfill function                   
                     #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,                               " "                               );                   
                             
                                         // center and radius of circle                   
                                         int                               x_circle = 250;                   
                                         int                               y_circle = 250;                   
                                         int                               radius=100;                   
                             
                                         // setting border color                   
                                         int                               border_color = WHITE;                   
                             
                             
                                         // set color and pattern                   
                                         setfillstyle(HATCH_FILL,RED);                   
                             
                                         // x and y is a position and                   
                                         // radius is for radius of circle                   
                                         circle(x_circle,y_circle,radius);                   
                             
                                         // fill the color at location                   
                                         // (x, y) with in border color                   
                                         floodfill(x_circle,y_circle,border_color);                   
                             
                                         getch();                   
                             
                                         // closegraph function closes the                   
                                         // graphics mode and deallocates                   
                                         // all memory allocated by                   
                                         // graphics system                   
                                         closegraph();                   
                             
                                         return                               0;                   
                     }                   

输出：

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