solidpolygon

This function is used to draw a filled polygon without a border.

void solidpolygon(
	const POINT *points,
	int num
);

Parameters

points

The coordinates of each point, the number of array elements is num.
The function automatically connects the polygon to the end.

num

The number of polygon vertices.

Return Value

None

Remarks

The function draws a filled polygon without a border using the current fill style.

Examples

The following snippet draws a closed fill triangle (two methods):

// method 1
POINT pts[] = { {50, 200}, {200, 200}, {200, 50} };
solidpolygon(pts, 3);

// method 2
int pts[] = {50, 200,  200, 200,  200, 50};
solidpolygon((POINT*)pts, 3);

The following full code draws a five-pointed star

#include <graphics.h>
#include <conio.h>
#include <math.h>

#define PI 3.14159265359

int main()
{
	// Create a graphics window.
	initgraph(640, 480);

	// Define an array to hold five vertex coordinates for a pentastar
	POINT pts[5];

	// Calculate the five vertex coordinates of a pentastar
	double a = PI / 2;
	for (int i = 0; i < 5; i++)
	{
		pts[i].x = int(320 + cos(a) * 100);
		pts[i].y = int(240 - sin(a) * 100);
		a += PI * 4 / 5;
	}

	// Set fill mood to WINDING.
	setpolyfillmode(WINDING);
	// Set the fill color to red
	setfillcolor(RED);
	// Draw a five-pointed star (no border)
	solidpolygon(pts, 5);

	// Press any key to exit.
	_getch();
	closegraph();
}