doImg(); */ class exaCSeal { static $fpath = '/media/fonts/simkai.ttf'; //指定的字体,simkai.ttf private $sealString; //印章字符 private $sealRadius; //印章半径 private $startRadius; //五角星半径 private $fontSize; //指定字体大小 private $inRadius; //内圆半径 private $backGround; //印章颜色 private $centerDot; //圆心坐标 private $img; //图形资源句柄 private $width; //图片宽度 private $height; //图片高度 private $strMaxLeng = 12 ; //最大字符长度 private $rimWidth = 6; //边框厚度 private $startAngle = 0; //五角星倾斜角度 private $charAngle = 0; //字符串倾斜角度 private $spacing = 0; //字符间隔角度 //构造方法 public function __construct($str ='', $rad = 75, $strad = 24, $fsize = 16, $inrad =0){ $this->sealString = empty($str) ? basLang::show('core.seal_defstr') : $str; $this->sealRadius = $rad; $this->startRadius = $strad; $this->fontSize = $fsize; $this->inRadius = $inrad; //默认0,没有 $this->centerDot = array('x'=>$rad, 'y'=>$rad); } //创建图片资源 private function createImg(){ $this->width = 2 * $this->sealRadius; $this->height = 2 * $this->sealRadius; $this->img = imagecreate($this->width, $this->height); imagecolorresolvealpha($this->img,255,255,255,127); $this->backGround = imagecolorallocate($this->img,255,0,0); } //画印章边框 private function drawRim(){ for($i=0;$i<$this->rimWidth;$i++){ imagearc($this->img,$this->centerDot['x'],$this->centerDot['y'],$this->width - $i,$this->height - $i,0,360,$this->backGround); } } //画内圆 private function drawInnerCircle(){ imagearc($this->img,$this->centerDot['x'],$this->centerDot['y'],2*$this->inRadius,2*$this->inRadius,0, 45,$this->backGround); imagearc($this->img,$this->centerDot['x'],$this->centerDot['y'],2*$this->inRadius,2*$this->inRadius,135,360,$this->backGround); } //画字符串 private function drawString(){ //编码处理 $charset = mb_detect_encoding($this->sealString); if($charset != 'UTF-8'){ $this->sealString = mb_convert_encoding($this->sealString, 'UTF-8', 'GBK'); } //相关计量 $charRadius = $this->sealRadius - $this->rimWidth - $this->fontSize - 4; //字符串半径 $leng = mb_strlen($this->sealString,'utf8'); //字符串长度 if($leng > $this->strMaxLeng) $leng = $this->strMaxLeng; $avgAngle = 360 / ($this->strMaxLeng); //平均字符倾斜度 //拆分并写入字符串 $words = array(); //字符数组 $font = DIR_STATIC.self::$fpath; for($i=0;$i<$leng;$i++){ $words[] = mb_substr($this->sealString,$i,1,'utf8'); $r = 630 + $this->charAngle + $avgAngle*($i - $leng/2) + $this->spacing*($i-1); //坐标角度 $R = 720 - $this->charAngle + $avgAngle*($leng-2*$i-1)/2 + $this->spacing*(1-$i); //字符角度 $x = $this->centerDot['x'] + $charRadius * cos(deg2rad($r)); //字符的x坐标 $y = $this->centerDot['y'] + $charRadius * sin(deg2rad($r)); //字符的y坐标 imagettftext($this->img, $this->fontSize, $R, $x, $y, $this->backGround, $font, $words[$i]); } } //画五角星 private function drawStart(){ $ang_out = 18 + $this->startAngle; $ang_in = 56 + $this->startAngle; $rad_out = $this->startRadius; $rad_in = $rad_out * 0.382; for($i=0;$i<5;$i++){ //五个顶点坐标 $points[] = $rad_out * cos(2*M_PI/5*$i - deg2rad($ang_out)) + $this->centerDot['x']; $points[] = $rad_out * sin(2*M_PI/5*$i - deg2rad($ang_out)) + $this->centerDot['y']; //内凹的点坐标 $points[] = $rad_in * cos(2*M_PI/5*($i+1) - deg2rad($ang_in)) + $this->centerDot['x']; $points[] = $rad_in * sin(2*M_PI/5*($i+1) - deg2rad($ang_in)) + $this->centerDot['y']; } imagefilledpolygon($this->img, $points, 10, $this->backGround); } //输出 private function outPut(){ basEnv::obClean(); header('Content-type:image/png'); imagepng($this->img); imagedestroy($this->img); die(); } //对外生成 function doImg(){ $this->createImg(); $this->drawRim(); $this->drawInnerCircle(); $this->drawString(); $this->drawStart(); $this->outPut(); } static function show($indep,$name='',$pos='',$tpl='',$eid='sceal_out'){ $tpl = empty($tpl) ? "
{name}
" : $tpl; $name = empty($name) ? basLang::show('core.seal_mark') : $name; if(file_exists(DIR_STATIC."/icons/indep/seal-$indep.png")){ $file = "seal-$indep.png"; }else{ $file = "seal-_comm.png"; } $path = PATH_STATIC."/icons/indep/$file"; $tpl = str_replace(array('{dept}','{name}','{pos}'),array($path,$name,$pos),$tpl); return $tpl; } }