C语⾔fillpoly函数详解
C语⾔中，fillpoly函数的功能是画⼀个多边形，今天我们就来学习学习。
C语⾔fillpoly函数：填充⼀个多边形
函数名：fillpoly
功能：画并填充⼀个多边形
头⽂件：#include <graphics.h>
原型：fillpoly(int numpoints, int far *polypoints);
参数说明：numpoints 为多边形的边数；far *polypoints 为存储各顶点坐标的数组，每两个⼀组表⽰⼀个顶点的 X 和 Y 坐标。实例代码：
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int i, maxx, maxy;
/* our polygon array */
int poly[8];
/* initialize graphics, local variables */
initgraph(&gdriver, &gmode, "");
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk)
库函数printf详解/* an error occurred */
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1);
/* terminate with an error code */
}
maxx = getmaxx();
maxy = getmaxy();
poly[0] = 20; /* 1st vertext */
poly[1] = maxy / 2;
poly[2] = maxx - 20; /* 2nd */
poly[3] = 20;
poly[4] = maxx - 50; /* 3rd */
poly[5] = maxy - 20;
/*
4th vertex. fillpoly automatically
closes the polygon.
*/
poly[6] = maxx / 2;
poly[7] = maxy / 2;
/* loop through the fill patterns */
for (i=EMPTY_FILL; i<USER_FILL; i++)
{
/* set fill pattern */
setfillstyle(i, getmaxcolor());
/* draw a filled polygon */
fillpoly(4, poly);
getch();
}
/
* clean up */
closegraph();
return 0;
}
注：fillpoly 函数是 TC 编译环境下的函数，VC 中⽆法使⽤。
以上就是关于fillpoly函数填充多边形功能的实现代码，希望对⼤家的学习有所帮助。