有个这么个类
doImg();
*/
namespace Common\Lib;
class circleSeal {
private $sealString; //印章字符
private $strMaxLeng; //最大字符长度
private $sealRadius; //印章半径
private $rimWidth; //边框厚度
private $innerRadius; //内圆半径
private $startRadius; //五角星半径
private $startAngle; //五角星倾斜角度
private $backGround; //印章颜色
private $centerDot; //圆心坐标
private $img; //图形资源句柄
private $font; //指定的字体
private $fontSize; //指定字体大小
private $width; //图片宽度
private $height; //图片高度
private $points; //五角星各点坐标
private $charRadius; //字符串半径
private $numRadius; //数字半径
private $charAngle; //字符串倾斜角度
private $spacing; //字符间隔角度
private $sealNum; //数字
private $sealName; //章名字
private $yheight; //字符的y坐标;
//构造方法
public function __construct($str ='',$num = '',$rad = 100, $rmwidth = 6, $strad = 28, $stang = 0, $crang = 0, $fsize = 16, $inrad =0){
$this->sealString = empty($str) ? '印章测试字符串' : $str;
$this->sealNum = empty($num) ? '010101010' : $num;
$this->strMaxLeng = 18;
$this->sealRadius = $rad;
$this->rimWidth = $rmwidth;
$this->startRadius = $strad;
$this->startAngle = $stang;
$this->charAngle = $crang;
$this->centerDot = array('x'=>$rad, 'y'=>$rad);
$this->font = dirname(__FILE__) .'/simhei.ttf';
$this->fontSize = $fsize;
$this->innerRadius = $inrad; //默认0,没有
$this->spacing = 1;
$this->width = 2 * $this->sealRadius;
$this->height = 2 * $this->sealRadius;
$this->yheight = 150; //字符的y坐标
}
//创建图片资源
private function createImg(){
$this->img = imagecreate($this->width, $this->height);
imagecolorresolvealpha($this->img,255,255,255,127);
$this->backGround = imagecolorallocate($this->img,255,0,0);
}
//画印章边框imagerectangle
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);
}
}
//画印章边框
private function drawSqu(){
for($i=0;$i<$this->rimWidth;$i++){
imagerectangle($this->img,0+$i,0+$i,120-$i,120-$i,$this->backGround);
}
}
//画正方形的名字
private function drawName1(){
//编码处理
$this->sealName .= '';
$charset = mb_detect_encoding($this->sealName);
if($charset != 'UTF-8'){
$this->sealName = mb_convert_encoding($this->sealName, 'UTF-8', 'GBK');
}
//相关计量
$leng = mb_strlen($this->sealName,'utf8'); //字符串长度
$nums = array();
//拆分并写入字符串
$onewidth=($this->width)/$leng;
for($i=0;$i<$leng;$i++){
$nums[] = mb_substr($this->sealName,$i,1,'utf8');
imagettftext($this->img,25, 0, 5+$i*30,40, $this->backGround, $this->font, mb_substr($this->sealName,$i,1,'utf8'));
}
// imagettftext($this->img,35, 0, 0,50, $this->backGround, $this->font, $nums[0]);
// imagettftext($this->img,35, 0, 60,50, $this->backGround, $this->font, $nums[1]);
// if($leng==3){
// imagettftext($this->img,35, 0, 10,77.5, $this->backGround, $this->font, $nums[2]);
// }else{
// imagettftext($this->img,35, 0, 10,50, $this->backGround, $this->font, $nums[2]);
// imagettftext($this->img,35, 0, 10,105, $this->backGround, $this->font, $nums[3]);
// }
}
//画内圆
private function drawInnerCircle(){
imagearc($this->img,$this->centerDot['x'],$this->centerDot['y'],2*$this->innerRadius,2*$this->innerRadius,0,360,$this->backGround);
}
//画下面的数字
private function drawNum(){
//编码处理
$charset = mb_detect_encoding($this->sealNum);
if($charset != 'UTF-8'){
$this->sealNum = mb_convert_encoding($this->sealNum, 'UTF-8', 'GBK');
}
//相关计量
$this->numRadius = $this->sealRadius - $this->rimWidth - 5; //数字半径
$leng = mb_strlen($this->sealNum,'utf8'); //字符串长度
// if($leng > $this->strMaxLeng) $leng = $this->strMaxLeng;
$avgAngle = 80 / 9; //平均字符倾斜度
//拆分并写入字符串
$nums = array(); //字符数组
for($i=0;$i<$leng;$i++){
$nums[] = mb_substr($this->sealNum,$i,1,'utf8');
$r =95 + $this->charAngle + $avgAngle*($i - $leng/2); //坐标角度
$R = 720 - $this->charAngle + $avgAngle*($leng-2*$i-1)/2 ; //字符角度
$x = $this->centerDot['x'] + $this->numRadius * cos(deg2rad($r)); //字符的x坐标
$y = $this->centerDot['y'] + $this->numRadius * sin(deg2rad($r)); //字符的y坐标
imagettftext($this->img,10, $R, $x, $y, $this->backGround, $this->font, $nums[$i]);
}
}
//画中间章的名字
private function drawName(){
//编码处理
$charset = mb_detect_encoding($this->sealName);
if($charset != 'UTF-8'){
$this->sealName = mb_convert_encoding($this->sealName, 'UTF-8', 'GBK');
}
//相关计量
$leng = mb_strlen($this->sealName,'utf8'); //字符串长度
//拆分并写入字符串
$nums = array(); //字符数组
for($i=0;$i<$leng;$i++){
$nums[] = mb_substr($this->sealName,$i,1,'utf8');
// $r =99 + $this->charAngle + $avgAngle*($i - $leng/2); //坐标角度
// $R = 720 - $this->charAngle + $avgAngle*($leng-2*$i-1)/2 ; //字符角度
$x = 44+$i*22; //字符的x坐标
$y = $this->yheight; //字符的y坐标
imagettftext($this->img,18, 0, $x, $y, $this->backGround, $this->font, $nums[$i]);
}
}
//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
$this->charRadius = $this->sealRadius - $this->rimWidth - $this->fontSize-5; //字符串半径
$leng = mb_strlen($this->sealString,'utf8'); //字符串长度
if($leng > $this->strMaxLeng) $leng = $this->strMaxLeng;
$avgAngle = 270 / ($this->strMaxLeng); //平均字符倾斜度
//拆分并写入字符串
$words = array(); //字符数组
for($i=0;$i<$leng;$i++){
$words[] = mb_substr($this->sealString,$i,1,'utf8');
$r = 630 + $this->charAngle + $avgAngle*($i - $leng/2); //坐标角度
$R = 720 - $this->charAngle + $avgAngle*($leng-2*$i-1)/2 ; //字符角度
$x = $this->centerDot['x'] + $this->charRadius * cos(deg2rad($r)); //字符的x坐标
$y = $this->centerDot['y'] + $this->charRadius * sin(deg2rad($r)); //字符的y坐标
imagettftext($this->img, $this->fontSize, $R, $x, $y, $this->backGround, $this->font, $words[$i]);
}
}
//画椭圆字符串
private function drawString1(){
//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
$charRadiusy = $this->centerDot['y'] - $this->rimWidth - $this->fontSize-2; //字符串y
$charRadiusx = $this->centerDot['x'] - $this->rimWidth - $this->fontSize-2; //字符串x
$leng = mb_strlen($this->sealString,'utf8'); //字符串长度
if($leng > $this->strMaxLeng) $leng = $this->strMaxLeng;
$avgAngle = 270 / $this->strMaxLeng; //平均字符倾斜度
//拆分并写入字符串
$words = array(); //字符数组
for($i=0;$i<$leng;$i++){
$words[] = mb_substr($this->sealString,$i,1,'utf8');
$r = 630 + $this->charAngle + $avgAngle*($i - $leng/2); //坐标角度
$R = 720- $this->charAngle + $avgAngle*($leng-2*$i-1)/2; //字符角度
$x = $this->centerDot['x'] + $charRadiusx * cos(deg2rad($r))+2; //字符的x坐标
$y = $this->centerDot['y'] + $charRadiusy * sin(deg2rad($r)); //字符的y坐标
imagettftext($this->img, $this->fontSize, $R, $x, $y, $this->backGround, $this->font,$words[$i]);
}
}
//画下面的数字
private function drawNum1(){
//编码处理
$charset = mb_detect_encoding($this->sealNum);
if($charset != 'UTF-8'){
$this->sealNum = mb_convert_encoding($this->sealNum, 'UTF-8', 'GBK');
}
//相关计量
$charRadiusy = $this->centerDot['y'] - $this->rimWidth - $this->fontSize+15; //字符串y
$charRadiusx = $this->centerDot['x'] - $this->rimWidth - $this->fontSize-2; //字符串x
$leng = mb_strlen($this->sealNum,'utf8'); //字符串长度
// if($leng > $this->strMaxLeng) $leng = $this->strMaxLeng;
$avgAngle = 80 / 9; //平均字符倾斜度
//拆分并写入字符串
$nums = array(); //字符数组
for($i=0;$i<$leng;$i++){
$nums[] = mb_substr($this->sealNum,$i,1,'utf8');
$r =97 + $this->charAngle + $avgAngle*($i - $leng/2); //坐标角度
$R = 720 - $this->charAngle + $avgAngle*($leng-2*$i-1)/2 ; //字符角度
$x = $this->centerDot['x'] + $charRadiusx * cos(deg2rad($r)); //字符的x坐标
$y = $this->centerDot['y'] + $charRadiusy * sin(deg2rad($r)); //字符的y坐标
imagettftext($this->img,10, $R, $x, $y, $this->backGround, $this->font, $nums[$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
$this->points[] = $rad_out * cos(2*M_PI/5*$i - deg2rad($ang_out)) + $this->centerDot['x'];
$this->points[] = $rad_out * sin(2*M_PI/5*$i - deg2rad($ang_out)) + $this->centerDot['y'];
//内凹的点坐标
$this->points[] = $rad_in * cos(2*M_PI/5*($i+1) - deg2rad($ang_in)) + $this->centerDot['x'];
$this->points[] = $rad_in * sin(2*M_PI/5*($i+1) - deg2rad($ang_in)) + $this->centerDot['y'];
}
imagefilledpolygon($this->img, $this->points, 10, $this->backGround);
}
//输出
private function outPut(){
header('Content-type:image/png');
imagepng($this->img);
imagedestroy($this->img);
}
//对外生成
public function saveImg($path,$name=''){
$this->sealName = $name;
$this->createImg();
$this->drawRim();
$this->drawInnerCircle();
$this->drawName();
$this->drawNum();
$this->drawString();
$this->drawStart();
imagepng($this->img,$path);
imagedestroy($this->img);
}
//生成椭圆
public function saveEll($path,$name=''){
$this->sealName = $name;
$this->width = 200;
$this->height = 147;
$this->yheight = 110;
$this->startRadius = 20;
$this->fontSize = 14;
$this->sealRadius = 75;
$this->points = array();
$this->centerDot = array('x'=>$this->width/2, 'y'=>$this->height/2);
$this->createImg();
$this->drawRim();
$this->drawInnerCircle();
$this->drawName();
$this->drawNum1();
$this->drawString1();
$this->drawStart();
imagepng($this->img,$path);
imagedestroy($this->img);
// $this->outPut();
}
//生成圆角正方形
public function saveSquare($path,$name=''){
$this->sealName = $name;
// $this->width = 120;
// $this->height = 120;
// $this->createImg();
// $this->drawSqu();
// $this->drawName1();
// $this->outPut();
$leng = mb_strlen($this->sealName,'utf8');
$this->width = 30*$leng+15;
$this->height = 60;
$this->img = imagecreatetruecolor($this->width, $this->height); // 创建一个正方形的图像
$bgcolor = imagecolorallocate($this->img, 255, 0, 0); // 图像的背景
imagefill($this->img, 0, 0, $bgcolor);
// 圆角处理
$radius = 5;
// lt(左上角)
$lt_corner = $this->get_lt_rounder_corner($radius);
imagecopymerge($this->img, $lt_corner, 0, 0, 0, 0, $radius, $radius, 100);
// lb(左下角)
$lb_corner = imagerotate($lt_corner, 90, 0);
imagecopymerge($this->img, $lb_corner, 0, $this->height - $radius, 0, 0, $radius, $radius, 100);
// rb(右上角)
$rb_corner = imagerotate($lt_corner, 180, 0);
imagecopymerge($this->img, $rb_corner, $this->width - $radius, $this->height - $radius, 0, 0, $radius, $radius, 100);
// rt(右下角)
$rt_corner = imagerotate($lt_corner, 270, 0);
imagecopymerge($this->img, $rt_corner, $this->width - $radius, 0, 0, 0, $radius, $radius, 100);
$img1 = imagecreatetruecolor($this->width-10, 55); // 创建一个正方形的图像
$bgcolor = imagecolorallocate($img1, 255, 255, 255); // 图像的背景
imagefill($img1, 0, 0, $bgcolor);
// 圆角处理
$radius = 5;
// lt(左上角)
$lt_corner = $this->get_lt_rounder_corner($radius,255,1,0);
imagecopymerge($img1, $lt_corner, 0, 0, 0, 0, $radius, $radius, 100);
// lb(左下角)
$lb_corner = imagerotate($lt_corner, 90, 0);
imagecopymerge($img1, $lb_corner, 0, $this->width-10, 0, 0, $radius, $radius, 100);
// rb(右上角)
$rb_corner = imagerotate($lt_corner, 180, 0);
imagecopymerge($img1, $rb_corner, 55, $this->width-10, 0, 0, $radius, $radius, 100);
// rt(右下角)
$rt_corner = imagerotate($lt_corner, 270, 0);
imagecopymerge($img1, $rt_corner,$this->width-10, 0, 0, 0, $radius, $radius, 100);
imagecopymerge($this->img, $img1, 5, 5, 0, 0, $this->width-10, 50, 100);
$this->backGround = imagecolorallocate($this->img,255,0,0);
$this->drawName1();
imagepng($this->img,$path);
imagedestroy($this->img);
}
function get_lt_rounder_corner($radius,$r=255,$g=255,$b=255) {
$img = imagecreatetruecolor($radius, $radius); // 创建一个正方形的图像
$bgcolor = imagecolorallocate($img, $r, $g, $b); // 图像的背景
$fgcolor = imagecolorallocate($img, 255,0,0);
imagefill($img, 0, 0, $bgcolor);
// $radius,$radius：以图像的右下角开始画弧
// $radius*2, $radius*2：已宽度、高度画弧
// 180, 270：指定了角度的起始和结束点
// fgcolor：指定颜色
imagefilledarc($img, $radius, $radius, $radius*2, $radius*2, 180, 270, $fgcolor, IMG_ARC_PIE);
// 将弧角图片的颜色设置为透明
imagecolortransparent($img, $fgcolor);
// 变换角度
// $img = imagerotate($img, 90, 0);
// $img = imagerotate($img, 180, 0);
// $img = imagerotate($img, 270, 0);
// header('Content-Type: image/png');
// imagepng($img);
return $img;
}
//对外生成
public function doImg($name=''){
$this->sealName = $name;
$this->createImg();
$this->drawRim();
$this->drawInnerCircle();
$this->drawName();
$this->drawNum();
$this->drawString();
$this->drawStart();
$this->outPut();
}
}
我稍微处理了一下 之前生成的正方形的章和原型的章 我改成了生成长方形的章
/**
* [produce_seal 生成电子签章]
* @return [type] [description]
*/
public function produce_seal(){
$map=array();
$list=D("user")->where(array("isadmin"=>'2',"isaud"=>'1'))->select();
$path = $_SERVER["DOCUMENT_ROOT"] . '/data/sign/';
mkdir($path,0755,true);
for ($i=0; $i saveSquare($picpath,$list[$i]['drivname']);
}
exit(json_encode(array('code'=>200,'msg'=>'生成完成')));
}
/**
* [add_seal 添加水印]
* @param [type] $url [原图路径]
* @param [type] $uid [图片名称路径]
*/
public function add_seal($url,$uid){
//判断uid下是否有该图片
$path = $_SERVER["DOCUMENT_ROOT"] . '/data/sign/'.$uid.".png";
if (!file_exists($path)) {
return false;
}
$dst = imagecreatefromstring(file_get_contents("http://".$_SERVER['HTTP_HOST'].$url));
$seal = imagecreatefromstring(file_get_contents($path));
$flag=imagecopymerge($dst, $seal, 1100, 160, 0, 0, imagesx($seal), imagesy($seal), 100);
imagepng($dst, substr($url,1));
imagedestroy($dst);
return $flag;
}
仅记录个思路，记录一下以后好用