search
HomeBackend DevelopmentPHP TutorialPHP implements Chinese circular seal special effects_PHP tutorial

PHP implements Chinese circular seal special effects_PHP tutorial

Jul 13, 2016 am 09:49 AM
phpindivualChineseroundfontaccomplisharcspecial effectsof

PHP implements Chinese circular seal special effects

On a whim, I wrote a circular seal generator. The arc rotation of the font took a lot of effort. Finally the effect is pretty good, the code is archived.

Method 1:

 ?

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

/*

* Chinese round seal type

* @author lkk/lianq.net

* @create on 10:03 2012-5-29

* @example:

* $seal = new circleSeal('You and I sit and walk east, west, north, south, center',75,6,24,0,0,16,40);

* $seal->doImg();

*/

class circleSeal {

private $sealString; //Seal character

private $strMaxLeng; //Maximum character length

private $sealRadius; //seal radius

private $rimWidth; //border thickness

private $innerRadius; //Inner circle radius

private $startRadius; //Pentagram radius

private $startAngle; //The tilt angle of the five-pointed star

private $backGround; //seal color

private $centerDot; //Circle center coordinates

private $img; //Graphic resource handle

private $font; //Specified font

private $fontSize; //Specify font size

private $width; //image width

private $height; //image height

private $points; //Coordinates of each point of the five-pointed star

private $charRadius; //String radius

private $charAngle; //String tilt angle

private $spacing; //Character spacing angle

//Construction method

public function __construct($str ='', $rad = 75, $rmwidth = 6, $strad = 24, $stang = 0, $crang = 0, $fsize = 16, $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; //默认0,没有

$this->spacing = 1;

}

 

//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($i=0;$irimWidth;$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->innerRadius,2*$this->innerRadius,0,360,$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

$this->charRadius = $this->sealRadius - $this->rimWidth - $this->fontSize; //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

for($i=0;$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'] $this->charRadius * cos(deg2rad($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

//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 doImg(){

$this->createImg();

$this->drawRim();

$this->drawInnerCircle();

$this->drawString();

$this->drawStart();

$this->outPut();

}

}

  方法二:

  ?

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

@$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

ImageArc($im,75,75,148-$i,148-$i,0,360,$red);

 

$stock='C:WINDOWSFontssimkai.ttf';

$point="★";

$size=30;

ImageTTFText($im,$size,0,72-$size/2,72 $size/2,$red,$stock,$point);

 

$a=75;$b=-75;//中心点坐标

$r=65;$m=40;//半径,角度

$size=16;//字体大小

$r=$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

$word[]=mb_substr($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

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

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);

?>

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
@$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 ImageArc($im,75,75,148-$i,148-$i,0,360,$red);   $stock='C:WINDOWSFontssimkai.ttf'; $point="★"; $size=30; ImageTTFText($im,$size,0,72-$size/2,72 $size/2,$red,$stock,$point);   $a=75;$b=-75;//中心点坐标 $r=65;$m=40;//半径,角度 $size=16;//字体大小 $r=$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 $word[]=mb_substr($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 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 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); ?>

The above is the entire content of this article, I hope you all like it

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1018929.htmlTechArticlePHP Realizes Chinese Circular Seal Special Effects On a whim, I wrote a circular seal generator, and the arc of the font is rotated quite a bit. Take effort. Finally the effect is pretty good, the code is archived. Method one: ? 1 2 3 4...
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
The Continued Use of PHP: Reasons for Its EnduranceThe Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesPHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages ​​that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedPHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryPHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideChoosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguagePHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondPHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment