中文字幕在线观看,亚洲а∨天堂久久精品9966,亚洲成a人片在线观看你懂的,亚洲av成人片无码网站,亚洲国产精品无码久久久五月天

實(shí)現(xiàn)中文圓形印章的PHP類

2018-07-20    來源:open-open

容器云強(qiáng)勢(shì)上線!快速搭建集群,上萬(wàn)Linux鏡像隨意使用
<?php
/*
 * 中文圓形印章類
 * @author lkk/lianq.net
 * @create on 10:03 2012-5-29
 * @example:
 *  $seal = new circleSeal('你我他坐站走東西南北中',75,6,24,0,0,16,40);
 *  $seal->doImg();
 */

class circleSeal {
    private $sealString;    //印章字符
    private $strMaxLeng;    //最大字符長(zhǎng)度
    private $sealRadius;    //印章半徑
    private $rimWidth;      //邊框厚度
    private $innerRadius;   //內(nèi)圓半徑
    private $startRadius;   //五角星半徑
    private $startAngle;    //五角星傾斜角度
    private $backGround;    //印章顏色
    private $centerDot;     //圓心坐標(biāo)
    private $img;           //圖形資源句柄
    private $font;          //指定的字體
    private $fontSize;      //指定字體大小
    private $width;         //圖片寬度
    private $height;        //圖片高度
    private $points;        //五角星各點(diǎn)坐標(biāo)
    private $charRadius;    //字符串半徑
    private $charAngle;     //字符串傾斜角度
    private $spacing;       //字符間隔角度

    //構(gòu)造方法
    public function __construct($str ='', $rad = 75, $rmwidth = 6, $strad = 24, $stang = 0, $crang = 0, $fsize = 16, $inrad =0){
        $this->sealString   = empty($str) ? '印章測(cè)試字符串' : $str;
        $this->strMaxLeng   = 12;
        $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__) .'/simkai.ttf';
        $this->fontSize     = $fsize;
        $this->innerRadius  = $inrad;   //默認(rèn)0,沒有
        $this->spacing      = 1;
    }

    //創(chuàng)建圖片資源
    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);
    }

    //畫印章邊框
    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);
        }
    }

    //畫內(nèi)圓
    private function drawInnerCircle(){
        imagearc($this->img,$this->centerDot['x'],$this->centerDot['y'],2*$this->innerRadius,2*$this->innerRadius,0,360,$this->backGround);
    }

    //畫字符串
    private function drawString(){
        //編碼處理
        $charset = mb_detect_encoding($this->sealString);
        if($charset != 'UTF-8'){
            $this->sealString = mb_convert_encoding($this->sealString, 'UTF-8', 'GBK');
        }

        //相關(guān)計(jì)量
        $this->charRadius = $this->sealRadius - $this->rimWidth - $this->fontSize;  //字符串半徑
        $leng   = mb_strlen($this->sealString,'utf8');  //字符串長(zhǎng)度
        if($leng > $this->strMaxLeng) $leng = $this->strMaxLeng;
        $avgAngle   = 360 / ($this->strMaxLeng);    //平均字符傾斜度

        //拆分并寫入字符串
        $words  = array();  //字符數(shù)組
        for($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);     //坐標(biāo)角度
            $R = 720 - $this->charAngle + $avgAngle*($leng-2*$i-1)/2 + $this->spacing*(1-$i);   //字符角度
            $x = $this->centerDot['x'] + $this->charRadius * cos(deg2rad($r));  //字符的x坐標(biāo)
            $y = $this->centerDot['y'] + $this->charRadius * sin(deg2rad($r));  //字符的y坐標(biāo)
            imagettftext($this->img, $this->fontSize, $R, $x, $y, $this->backGround, $this->font, $words[$i]);
        }
    }   

    //畫五角星
    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++){
            //五個(gè)頂點(diǎn)坐標(biāo)
            $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'];

            //內(nèi)凹的點(diǎn)坐標(biāo)
            $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);
    }

    //輸出
    private function outPut(){
        header('Content-type:image/png');
        imagepng($this->img);
        imagedestroy($this->img);
    }

    //對(duì)外生成
    public function doImg(){
        $this->createImg();
        $this->drawRim();
        $this->drawInnerCircle();
        $this->drawString();
        $this->drawStart();
        $this->outPut();
    }
}

標(biāo)簽:

版權(quán)申明:本站文章部分自網(wǎng)絡(luò),如有侵權(quán),請(qǐng)聯(lián)系:west999com@outlook.com
特別注意:本站所有轉(zhuǎn)載文章言論不代表本站觀點(diǎn)!
本站所提供的圖片等素材,版權(quán)歸原作者所有,如需使用,請(qǐng)與原作者聯(lián)系。

上一篇:PHP 判斷客戶端是IOS還是Android

下一篇:PHP目錄操作