PHP绘制3D图形 之 自定义图形及矢量图

上一篇进行了一些简单3D图形实例,本篇介绍自定义及矢量图实例。首先绘制一个三尖角星体,分别由“前面”,“后面”和三个“侧面”组成。

 

自定义多边形

 

代码:

<?php  require_once('Image/3D.php');  $image = new Image_3D();  $image->setColor(new Image_3D_Color(255, 255, 255));  //创建光源  $light1 = $image->createLight('light',array(-50, -50, -50));  $light1->setColor(new Image_3D_Color(100, 250, 100));    $light2 = $image->createLight('light',array(50, -50, 0));  $light2->setColor(new Image_3D_Color(100, 100, 250));    $light3 = $image->createLight('light',array(50, 50, 0));  $light3->setColor(new Image_3D_Color(50, 0, 100));    //创建多边形数组  $polygons = array();    //前面点坐标  $polygons[] = array(                  array(0, -120, 0), array(-18, -12, 0),                   array(-86, 48, 0), array(0, 18, 0),                   array(86, 48, 0),  array(18, -12, 0)                );    //后面点坐标  $polygons[] = array(                  array(0, -120, 60), array(-18, -12, 60),                   array(-86, 48, 60), array(0, 18, 60),                   array(86, 48, 60),  array(18, -12, 60)                );    //三侧面点坐标  $polygons[] = array(                  array(0, -120, 0),  array(-18, -12, 0),                   array(-86, 48, 0),  array(-86, 48, 60),                   array(-18, -12, 60),array(0, -120, 60)                );  $polygons[] = array(                  array(-86, 48, 0), array(0, 18, 0),                   array(86, 48, 0),  array(86, 48, 60),                   array(0, 18, 60),  array(-86, 48, 60)                );  $polygons[] = array(                  array(86, 48, 0),  array(18, -12, 0),                   array(0, -120, 0), array(0, -120, 60),                   array(18, -12, 60),array(86, 48, 60)                );    //绘制3D图像  foreach ($polygons as $poly) {      $points = array();      foreach ($poly as $set) {          $points[] = new Image_3D_Point($set[0], $set[1], $set[2]);      }      $p = $image->createObject('polygon', $points);      $p->setColor(new Image_3D_Color(255, 255, 255));  }    $image->transform($image->createMatrix('Rotation', array(-10, -25, -15)));  $image->createRenderer('perspectively');  $image->createDriver('gd');  $image->render(300, 300, 'anim.png');  echo '<img src="anim.png">';  ?>

效果图:

anim

矢量图

       可缩放的矢量图形(Scalable Vector Graphics,SVG)文件格式是组成2D图像的矢量XML文件。 在2001年,W3C对该格式进行了标准化,但其在Web方面的使用因为浏览器显示SVG文件的牵制而不很流行。 目前,最好的选择是Firefox它有内置的SVG支持,或具有Adobe SVG插件的IE。下面通过一个实例生成SVG文件。

代码:

<?php  require_once('Image/3D.php');    $rot_x = 45;  $rot_y = 45;  $rot_z = 10;    $image = new Image_3D();  $image->setColor(new Image_3D_Color(255, 255, 255));    for ($x=0; $x < 4; $x++) {    for ($y=0; $y < 4; $y++) {      for ($z=0; $z < 4; $z++) {        //创建球体        $sphere = $image->createObject('sphere', array('r' => 25, 'detail' => 3));        //后面150用于设置图像透明度        $sphere->setColor(new Image_3D_Color(255, 162, 0, 150));        $sphere->transform($image->createMatrix('Move', array(($x * 75) + 50, $y * 75, $z * 75)));        $sphere->transform($image->createMatrix('Rotation', array($rot_x, $rot_y, $rot_z)));      }    }  }    $image->transform($image->createMatrix('Move', array(-225, -100, 0)));  $image->createRenderer('perspectively');  //使用SVG驱动生成矢量图  $image->createDriver('svg');  $image->render(600, 600, 'anim.svg');  header('Location:anim.svg');  ?>

效果图:

2009-8-27-16.20.12

输出的SVG文件打开后,其格式即为XML:

<?xml version="1.0" ?>  <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"           "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">    <svg xmlns="http://www.w3.org/2000/svg" x="0" y="0" width="600" height="600">        <defs id="defs16387">      </defs>        <polygon id="background1" points="0,0 600,0 600,600 0,600"               style="fill: #ffffff; fill-opacity: 1.00; stroke: none;" />      <polygon points="325.87,264.90 323.53,258.51 321.87,262.52"               style="fill: #ffa200; fill-opacity: 0.41; stroke: none;" />      <polygon points="319.40,256.07 321.87,262.52 323.53,258.51"               style="fill: #ffa200; fill-opacity: 0.41; stroke: none;" />      ... ...      <polygon points="230.72,174.08 236.47,190.12 226.95,185.47"               style="fill: #ffa200; fill-opacity: 0.41; stroke: none;" />      <polygon points="230.72,174.08 252.69,180.70 236.47,190.12"               style="fill: #ffa200; fill-opacity: 0.41; stroke: none;" />  </svg>

 

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