PHP GD POLYGONS

This Lesson covers polygons. A polygon must have at least 3 points (triangle). Basically it takes an array of x,y points, an integer (number of points), and color.
$points = array(50,10,10,90,90,90); imagefilledpolygon($image,$points,3,$red);	Right click, select all, ctrl+c to copy. <?php $image = imagecreatetruecolor(100, 100); $black=imagecolorallocate($image, 0,0,0); imagecolortransparent($image,$black); $red = imagecolorallocate($image, 255, 0,0); imagesetthickness($image,5); ImageAntiAlias($image, true); // Draw the polygon $points = array(50,10,10,90,90,90); imagefilledpolygon($image,$points,3,$red); header('Content-type: image/png'); imagepng($image); imagedestroy($image); ?>
A 3D box:	Right click, select all, ctrl+c to copy. <?php $im = imagecreate(40,60); $background_color = imagecolorallocate($im, 0,0,200); imagecolortransparent($im, $background_color); $gold = imagecolorallocate($im, 255, 200, 0); $red = imagecolorallocate($im, 255, 0, 0); $purple=imagecolorallocate($im, 200, 0, 200); $points = array(20,0,40,20,20,40,0,20); $points2 = array(0,20,20,40,20,60,0,40); $points3 = array(20,40,40,20,40,40,20,60); imagefilledpolygon($im, $points, 4, $gold); imagefilledpolygon($im, $points2, 4, $red); imagefilledpolygon($im, $points3, 4, $purple); header("Content-type: image/gif"); imagegif($im); imagedestroy($im); ?>
Hexagon: This line seems to make the lines sharper. ImageAntiAlias($im, true);	Uses imagefilledpolygon and imagepolygon for the outlines. Right click, select all, ctrl+c to copy. <?php $width = 140; $height = 142; $im = imagecreatetruecolor($width,$height); $black = imagecolorallocate($im, 0,0,0); imagecolortransparent($im,$black); $red = imagecolorallocate($im, 255, 0,0); $green = imagecolorallocate($im, 0, 255, 0); ImageAntiAlias($im, true); $points1 = array(10,100,30,70,60,70,80,100,60,130,30,130); $points2 = array(80,100,130,40,120,58,60,130); $points3 = array(60,70,110,10,130,40,80,100); $points4 = array(30,70,80,10,110,10,60,70); imagefilledpolygon($im, $points1, 6, $red); imagepolygon($im, $points1, 6, $green); imagefilledpolygon($im, $points2, 4, $red); imagepolygon($im, $points2, 4, $green); imagefilledpolygon($im, $points3, 4, $red); imagepolygon($im, $points3, 4, $green); imagefilledpolygon($im, $points4, 4, $red); imagepolygon($im, $points4, 4, $green); header("Content-type: image/png"); imagepng($im, "images/hexagon.png"); imagedestroy($im); ?>
This octogram is made up of 4 triangles (different colors so you can see them).
	Right click, select all, ctrl+c to copy. <?php $width = 160; $height = 120; $im = imagecreate($width,$height); $white = imagecolorallocate($im, 255, 255,255); $black = imagecolorallocate($im, 0,0,0); $blue = imagecolorallocate($im, 0,0,255); $gold = imagecolorallocate($im, 255, 200, 0); $red = imagecolorallocate($im, 255, 0,0); $green = imagecolorallocate($im, 0, 255,0); $points1 = array(30,40,130,40,80,90); $points2 = array(30,80,80,30,130,80); $points3 = array(50,60,100,10,100,110); $points4 = array(60,10,110,60,60,110); imagefilledpolygon($im, $points1, 3, $gold); imagefilledpolygon($im, $points2, 3, $gold); imagefilledpolygon($im, $points3, 3, $gold); imagefilledpolygon($im, $points4, 3, $gold); header("Content-type: image/gif"); imagegif($im); imagedestroy($im); ?>
	One of Mike's scripts which he gave me. Star Text
	Another star from Mike's site. Star Gradient You can visit his site here: DJ Mike If you get a message about risky behavior on his site, it is probably because he banned all the foreign countries. It is safe to visit.
This is a script I found on line a while back. Reload the page to see the image change. Polygon Fractal	Frac_Gen Zip
This is a script I found on line years ago. It does not appear to be on line anymore. Polygon Form	Polygon zip
	If you just want to output an image without the form or the writing on it, grab this text, which is the same script as the polygon form with the extras commented out. Polygon Text
Finally, this is a page I did a few years back experimenting with Loops and Polygons.