php
$width = 600; $height = 650; header(content-type: image/gif); $img = imagecreate($width,$height);//创建一张图片 $bg color = imagecolorallocate($img,0,0,0); $red = imagecolorallocate($img,255,0,0); for($i=0;$i
$width = 600;$height = 650;header(content-type: image/gif);$img = imagecreate($width,$height);//创建一张图片$bg_color = imagecolorallocate($img,0,0,0);$red = imagecolorallocate($img,255,0,0);for($i=0;$i<=100;$i++){ for($j=0;$j<=100;$j++){ $r = m_pi/50*$i * (1-sin(m_pi/50*$j))*40; $x = $r *cos(m_pi/50*$j)*sin(m_pi/50*$i)+$width/2; $y = -$r*sin(m_pi/50*$j)+$height/6; imagesetpixel($img,$x,$y,$red); }}imagegif($img);imagedestroy($img);
效果如下：
代码转自 博客