头文件graphics.h包含setfillstyle()函数,该函数设置当前的填充图案和填充颜色。 floodfill()函数用于填充封闭区域。当前的填充图案和填充颜色用于填充区域。
句法 :
void setfillstyle(int pattern, int color)
void floodfill(int x, int y, int border_color)
例子 :
输入:图案= HATCH_FILL,颜色=红色圆圈:x = 250,y = 250,半径= 100 Floodfill:x = 250,y = 250,边框颜色= 15输出: 输入:图案= LTSLASH_FILL,颜色=红色矩形:左侧= 200,顶部= 200,右侧= 450,底部= 450填满:x = 201,y = 201,border_color = 15输出:
下表显示了与Colors对应的INT VALUES:
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
下表显示了对应于Patterns的INT VALUES:
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:
// C Implementation for setfillstyle
// and floodfill function
#include
// 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:
想要从精选的最佳视频中学习和练习问题,请查看《基础知识到高级C的C基础课程》。