mirror of
https://gitee.com/ShopeX/OMS
synced 2026-03-23 02:45:33 +08:00
206 lines
6.8 KiB
PHP
206 lines
6.8 KiB
PHP
<?php
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/**
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* Copyright © ShopeX （http://www.shopex.cn）. All rights reserved.
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* See LICENSE file for license details.
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*/
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class base_vcode_gif {
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var $Noisy = 2; // 干扰点出现的概率
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var $Count = 4; // 字符数量
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var $Width = 60; // 图片宽度
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var $Height = 16; // 图片高度
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var $Angle = 2; // 角度随机变化量
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var $Offset = 10; // 偏移随机变化量
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var $Border = 1; // 边框大小
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var $imgData = "";
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var $Graph=array();
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var $code = "";
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function length($len) {
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mt_srand((double)microtime() * 1000000);
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$code = mt_rand(((int)str_repeat('9',$len-1)) + 1, (int)str_repeat('9',$len));
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$this->code = $code;
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for($i=0;$i<strlen($code);$i++){
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$this->SetDraw(substr($code,$i,1), $i);
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}
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return true;
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}
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function get_code(){
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return $this->code;
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}
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function SetDot($pX, $pY) {
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if($pX * ($this->Width-$pX-1) >= 0 && $pY * ($this->Height-$pY-1) >= 0)
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{
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$this->Graph[$pX][$pY] = 1;
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}
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}
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function Rnd() {
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mt_srand((double)microtime() * 1000000);
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return mt_rand(1, 999)/1000;
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}
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function Sgn($v) {
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if($v>0) return 1;
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if($v==0) return 0;
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if($v<0) return -1;
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}
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function SetDraw($pIndex, $pNumber) {
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// 字符数据
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$DotData[0] = array(1, 80, 30, 100, 80, 100, 100, 70, 100, 20, 70, 1, 30, 1, 1, 20, 1, 40, 1, 80);
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$DotData[1] = array(30, 15, 50, 1, 50, 100);
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$DotData[2] = array(1 ,34 ,30 ,1 ,71, 1, 100, 34, 1, 100, 93, 100, 100, 86);
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$DotData[3] = array(1, 1, 100, 1, 42, 42, 100, 70, 50, 100, 1, 70);
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$DotData[4] = array(100, 73, 6, 73, 75, 6, 75, 100);
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$DotData[5] = array(100, 1, 1, 1, 1, 50, 50, 35, 100, 55, 100, 80, 50, 100, 1, 95);
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$DotData[6] = array(100, 20, 70, 1, 20, 1, 1, 30, 1, 80, 30, 100, 70, 100, 100, 80, 100, 60, 70, 50, 30, 50, 1, 60);
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$DotData[7] = array(6, 26, 6, 6, 100, 6, 53, 100);
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$DotData[8] = array(100, 30, 100, 20, 70, 1, 30, 1, 1, 20, 1, 30, 100, 70, 100, 80, 70, 100, 30, 100, 1, 80, 1, 70, 100, 30);
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$DotData[9] = array(1, 80, 30, 100, 80, 100, 100, 70, 100, 20, 70, 1, 30, 1, 1, 20, 1, 40, 30, 50, 70, 50, 100, 40);
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$vExtent = $this->Width / strlen($this->code);
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$Margin[0] = $this->Border +$vExtent *$pNumber+ $vExtent * ($this->Rnd() * $this->Offset) / 100;
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$Margin[1] = $vExtent * ($pNumber + 1) - $this->Border - $vExtent * ($this->Rnd() * $this->Offset) / 100;
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$Margin[2] = $this->Border + $this->Height * ($this->Rnd() * $this->Offset) / 100;
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$Margin[3] = $this->Height - $this->Border - $this->Height * ($this->Rnd * $this->Offset) / 100;
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$vWidth = intval($Margin[1] - $Margin[0]);
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$vHeight = intval($Margin[3] - $Margin[2]);
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//起始坐标
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$vStartX = intval(($DotData[$pIndex][0]-1) * $vWidth / 100);
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$vStartY = intval(($DotData[$pIndex][1]-1) * $vHeight / 100);
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for ($i = 1 ;$i<=count($DotData[$pIndex])/2;$i++)
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{
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If($DotData[$pIndex][2*$i-2] <> 0 && $DotData[$pIndex][2*$i] <> 0)
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{
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// 终点坐标
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$vEndX = ($DotData[$pIndex][2*$i]-1) * $vWidth / 100;
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$vEndY = ($DotData[$pIndex][2*$i+1]-1) * $vHeight / 100;
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// 横向差距
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$vDX = $vEndX - $vStartX;
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// 纵向差距
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$vDY = $vEndY - $vStartY;
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// 倾斜角度
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if($vDX == 0)
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$vAngle = $this->Sgn($vDY) * 3.14/2;
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else
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$vAngle = atan($vDY /$vDX);
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//两坐标距离
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if(sin($vAngle) == 0)
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$vLength = $vDX;
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else
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$vLength = $vDY / sin($vAngle);
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// 随机转动角度
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$vAngle = $vAngle + ($this->Rnd() - 0.5) * 2 * $this->Angle * 3.14 * 2 / 100;
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$vDX = intval(cos($vAngle) * $vLength);
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$vDY = intval(sin($vAngle) * $vLength);
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if(abs($vDX) > abs($vDY))
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$vDeltaT = abs($vDX) ;
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else
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$vDeltaT = abs($vDY);
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for($j = 1;$j<=$vDeltaT;$j++)
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$this->SetDot($Margin[0] + $vStartX + $j * $vDX / $vDeltaT, $Margin[2] + $vStartY + $j * $vDY / $vDeltaT);
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$vStartX = $vStartX + $vDX;
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$vStartY = $vStartY + $vDY;
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}
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}
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}
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function display($width=60,$height=16) {
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$this->Width = $width;
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$this->Height = $height;
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$out = "";
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$i = 0;
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// 文件类型
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$out .= "GIF";
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// 版本信息
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$out .= "89a";
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// 逻辑屏幕宽度
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$out .= chr($this->Width % 256).chr(($this->Width/256) % 256);
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// 逻辑屏幕高度
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$out .= chr($this->Height % 256).chr(($this->Height / 256) % 256);
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$out .= chr(128) . chr(0) . chr(0);
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// 全局颜色列表
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$out .= chr(0xEE).chr(0xEE).chr(0xEE);
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$out .= chr(0x00).chr(0x00).chr(0x00);
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// 图象标识符
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$out .= ",";
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$out .= chr(0).chr(0).chr(0).chr(0);
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// 图象宽度
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$out .= chr($this->Width % 256).chr(($this->Width/256) % 256);
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// 图象高度
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$out .= chr($this->Height % 256).chr(($this->Height / 256) % 256);
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$out .= chr(0).chr(7).chr(255);
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for($y = 0;$y<$this->Height;$y++)
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{
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for($x = 0;$x<$this->Width;$x++)
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{
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if($this->Rnd() < $this->Noisy / 100)
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$out .= chr(1-$this->Graph[$x][$y]);
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else
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{
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if($x * ($x-$this->Width) == 0 || $y * ($y-$this->Height) == 0)
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$out .= chr($this->Graph[$x][$y]);
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else
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{
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if($this->Graph[$x-1][$y]== 1 || $this->Graph[$x][$y] || $this->Graph[$x][$y-1] == 1)
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$out .= chr(1);
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else
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$out .= chr(0);
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}
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}
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if(($y * $this->Width + $x + 1) % 126 == 0)
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{
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$out .= chr(128);
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$i++;
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}
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if(($y * $this->Width + $x + $i + 1) % 255 == 0)
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{
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if(($this->Width*$this->Height - $y * $this->Width - $x - 1) > 255)
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$out .= chr(255);
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else
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$out .= chr($this->Width * $this->Height %255);
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}
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}
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}
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$out .= chr(128).chr(0).chr(129).chr(0).chr(59);
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header("Expires: -9999");
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header("Pragma: no-cache");
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header("Cache-Control: no-cache, no-store");
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header("Content-Type: image/gif");
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echo $out;
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exit();
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}
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}
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