PHP implementation of Chinese round stamp effect _php tutorial

PHP for Chinese round stamp effect

Whim, wrote a round stamp generator, the font of the arc rotation is a lot of effort. Finally, the effect is good, code archiving.

Method One:

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/* * Chinese round seal type * @author lkk/lianq.net * @create on 10:03 2012-5-29 * @example: * $seal = new Circleseal (' You and me he sits East ', 75,6,24,0,0,16,40); * $seal->doimg (); */ Class Circleseal { Private $sealString; Stamp character Private $strMaxLeng; Maximum characters length Private $sealRadius; Seal radius Private $rimWidth; Border thickness Private $innerRadius; Radius of Inner Circle Private $startRadius; Pentagram radius Private $startAngle; Pentagram Tilt Angle Private $backGround; Seal color Private $centerDot; Center coordinates Private $img; Graphics resource Handle Private $font; The specified font Private $fontSize; Specify font size Private $width; Picture width Private $height; Picture height Private $points; Point coordinates of the pentagram Private $charRadius; String radius Private $charAngle; String Tilt angle Private $spacing; Character Interval angle Construction method Public function __construct ($str = ", $rad = $rmwidth = 6, $strad =, $stang = 0, $crang = 0, $fsize = +, $inrad =0 ){ $this->sealstring = Empty ($STR)? ' Seal test string ': $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; Default 0, no $this->spacing = 1; } Create a picture resource 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); } Draw a seal border 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, $this->background); } } Draw Inner Circle Private Function drawinnercircle () { Imagearc ($this->img, $this->centerdot[' x '], $this->centerdot[' y '],2* $this->innerradius,2* $this innerradius,0,360, $this->background); } Draw a String Private Function drawstring () { Encoding processing $charset = mb_detect_encoding ($this->sealstring); if ($charset! = ' UTF-8 ') { $this->sealstring = mb_convert_encoding ($this->sealstring, ' UTF-8 ', ' GBK '); } Related metering $this->charradius = $this->sealradius-$this->rimwidth-$this->fontsize; String radius $leng = Mb_strlen ($this->sealstring, ' UTF8 '); String length if ($leng > $this->strmaxleng) $leng = $this->strmaxleng; $avgAngle =/($this->strmaxleng); Average character tilt Splitting and writing strings $words = Array (); Character array for ($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); Coordinate angle $R = 720-$this->charangle + $avgAngle * ($leng -2* $i-1)/2 + $this->spacing* (1-$i); Character Angle $x = $this->centerdot[' x '] + $this->charradius * cos (Deg2rad ($r)); The x-coordinate of the character $y = $this->centerdot[' y ') + $this->charradius * sin (Deg2rad ($r)); The y-coordinate of the character Imagettftext ($this->img, $this->fontsize, $R, $x, $y, $this->background, $this->font, $words [$i]); } } Draw a Pentagram Private Function Drawstart () { $ang _out = + $this->startangle; $ang _in = + $this->startangle; $rad _out = $this->startradius; $rad _in = $rad _out * 0.382; for ($i =0; $i <5; $i + +) { Five vertex coordinates $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 ']; The point coordinates of the inner concave $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, $this->background); } Output Private Function OutPut () { Header (' content-type:image/png '); Imagepng ($this->img); Imagedestroy ($this->img); } External generation Public Function doimg () { $this->createimg (); $this->drawrim (); $this->drawinnercircle (); $this->drawstring (); $this->drawstart (); $this->output (); } }

Method Two:

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@ $hos =iconv ("GBK", "UTF-8", $_get["hos"]); if (!isset ($hos)) Exit $im =imagecreate (150,150); $gray =imagecolorresolvealpha ($im, 200,200,200,127); $red =imagecolorallocate ($im, 230,150,150); for ($i =0; $i <6; $i + +) Imagearc ($im, 75,75,148-$i, 148-$i, 0,360, $red); $stock = ' C:\WINDOWS\Fonts\simkai.ttf '; $point = "★"; $size = 30; Imagettftext ($im, $size, 0,72-$size/2,72+ $size/2, $red, $stock, $point); $a =75; $b =-75;//Center Point coordinates $r =65; $m =40;//radius, angle $size =16;//Font Size $r = $r-$size; $word =array (); $max = 18; $count =mb_strlen ($hos, ' UTF8 '); if ($count > $max) $count = $max; if ($count >12) $m =floor (360/$count); else if ($count >5) $m-= $count; for ($i =0; $i < $count; $i + +) $word []=mb_substr ($hos, $i, 1, ' UTF8 '); $j =floor ($count/2); if ($j! = $count/2) { for ($i = $j; $i >=0; $i--) { $arc = $m * ($j-$i) + $size/2; $x =round ($r *cos ((90+ $arc) *m_pi/180) + $a; $y =-1* (Round ($r *sin ((90+ $arc) *m_pi/180) + $b); if ($arc <10) $arc = 0; Imagettftext ($im, $size, $arc, $x, $y, $red, $stock, $word [$i]); $arc = $m * ($j-$i)-$size/2; $x =round ($r *cos ((90-$arc) *m_pi/180) + $a; $y =-1* (Round ($r *sin ((90-$arc) *m_pi/180) + $b); if ($arc <10) $arc = 0; Imagettftext ($im, $size,-$arc, $x, $y, $red, $stock, $word [$j + $j-$i]); } } Else { $j = $j-1; for ($i = $j; $i >=0; $i--) { $arc = $m/2+ $m * ($j-$i) + $size/2; $x =round ($r *cos ((90+ $arc) *m_pi/180) + $a; $y =-1* (Round ($r *sin ((90+ $arc) *m_pi/180) + $b); Imagettftext ($im, $size, $arc, $x, $y, $red, $stock, $word [$i]); $arc = $m/2+ $m * ($j-$i)-$size/2; $x =round ($r *cos ((90-$arc) *m_pi/180) + $a; $y =-1* (Round ($r *sin ((90-$arc) *m_pi/180) + $b); Imagettftext ($im, $size,-$arc, $x, $y, $red, $stock, $word [$j + $j +1-$i]); } } Header (' content-type:image/png '); Imagepng ($im); ?>

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