PEAR提供了Image_3D Package来创建3D图像。图像或光线在3D空间中按照X、Y 、Z 坐标定位。生成的图像将呈现在2D空间中，可以存储为 PNG、SVG 格式，或输出到Shell。通过Image_3D可以很方便生成一些简单的3D对象，例如立方体、锥体、球体、文本和饼图。查了一
PEAR提供了Image_3D Package来创建3D图像。图像或光线在3D空间中按照X、Y 、Z 坐标定位。生成的图像将呈现在2D空间中，可以存储为 PNG、SVG 格式，或输出到Shell。通过Image_3D可以很方便生成一些简单的3D对象，例如立方体、锥体、球体、文本和饼图。查了一下PEAR文档关于Image_3D的实例一个也没有～囧～，只好自己研究一下，将经验分享给大家，请多多拍砖。言归正传，Image_3D需要PEAR和GD(配置php.ini)的支持。
下载Image_3D Package ，目前最新版本为：0.4.1 alpha
官方下载：http://pear.php.net/package/Image_3D/download
将压缩包放到有pear.bat的目录中，例如：c:\php，若是WAMP5的话则为c:\wamp\php。
执行 pear install Image_3D-0.4.1.gz 安装Package：
安装完毕，Image_3D会在 C:\wamp\php\PEAR\Image 目录中。
Image_3D的坐标系及旋转请参考下图，用于缩放、旋转或移动物体：
代码如下：
<span><?php </span><span>//调用3D图形类 </span><span>require_once</span><span>(</span><span>'Image/3D.php'</span><span>)</span>; <span>//创建一个三维空间 </span><span>$image </span><span>= </span><span>new </span>Image_3D<span>()</span>; <span>$image</span><span>-></span>setColor<span>(</span><span>new </span>Image_3D_Color<span>(</span><span>255</span><span>, </span><span>255</span><span>, </span><span>255</span><span>))</span>; <span>//在坐标系左下方创建一个红色光点 </span><span>$light1 </span><span>= </span><span>$image</span><span>-></span>createLight<span>(</span><span>"Light"</span><span>,</span><span>array</span><span>(-</span><span>100</span><span>, </span><span>100</span><span>, -</span><span>100</span><span>))</span>; <span>$light1</span><span>-></span>setColor<span>(</span><span>new </span>Image_3D_Color<span>(</span><span>255</span><span>, </span><span>0</span><span>, </span><span>0</span><span>))</span>; <span>//在坐标系右上方创建一个绿色光点 </span><span>$light2 </span><span>= </span><span>$image</span><span>-></span>createLight<span>(</span><span>"Light"</span><span>,</span><span>array</span><span>(</span><span>100</span><span>, -</span><span>200</span><span>, -</span><span>50</span><span>))</span>; <span>$light2</span><span>-></span>setColor<span>(</span><span>new </span>Image_3D_Color<span>(</span><span>0</span><span>, </span><span>200</span><span>, </span><span>0</span><span>))</span>; <span>//创建3D圆锥体 </span><span>$cone </span><span>= </span><span>$image</span><span>-></span>createObject<span>(</span><span>'cone'</span><span>,</span><span>array</span><span>(</span><span>'detail'</span>=><span>360</span><span>))</span>; <span>$cone</span><span>-></span>setColor<span>(</span><span>new </span>Image_3D_Color<span>(</span><span>255</span><span>, </span><span>255</span><span>, </span><span>255</span><span>))</span>; <span>//按X,Y,Z轴缩放 </span><span>$cone</span><span>-></span>transform<span>(</span><span>$image</span><span>-></span>createMatrix<span>(</span><span>'scale'</span><span>, </span><span>array</span><span>(</span><span>80</span><span>, </span><span>150</span><span>, </span><span>80</span><span>)))</span>; <span>//按X,Y,Z轴旋转 </span><span>$cone</span><span>-></span>transform<span>(</span><span>$image</span><span>-></span>createMatrix<span>(</span><span>'rotation'</span><span>, </span><span>array</span><span>(</span><span>15</span><span>, </span><span>0</span><span>, </span><span>20</span><span>)))</span>; <span>//按X,Y,Z轴移动 </span><span>$cone</span><span>-></span>transform<span>(</span><span>$image</span><span>-></span>createMatrix<span>(</span><span>'move'</span><span>, </span><span>array</span><span>(</span><span>0</span><span>, -</span><span>50</span><span>, </span><span>0</span><span>)))</span>; <span>//创建2D输出图像 //渲染效果，Image_3D共提供了种效果：Isometric，Perspectively，Raytrace //参考...\PEAR\Image\3D\Renderer目录 </span><span>$image</span><span>-></span>createRenderer<span>(</span><span>'perspectively'</span><span>)</span>; <span>//图像驱动，也可以SVG，ASCII等 //参考...\PEAR\Image\3D\Driver目录 </span><span>$image</span><span>-></span>createDriver<span>(</span><span>'gd'</span><span>)</span>; <span>//创建输出图片名称及大小 </span><span>$image</span><span>-></span>render<span>(</span><span>400</span><span>, </span><span>300</span><span>, </span><span>'object.png'</span><span>)</span>; <span>//显示效果图 </span><span>echo </span><span>'<img src="object.png" alt="PHP绘制3D图形" >'</span>; <span>?></span></span>
效果图：
将上例创建3D圆锥体部分代码替换为：
<span>//创建3D字体 </span><span>$text </span><span>= </span><span>$image</span><span>-></span>createObject<span>(</span><span>'text'</span><span>,</span><span>'cnblogs'</span><span>)</span>; <span>$text</span><span>-></span>setColor<span>(</span><span>new </span>Image_3D_Color<span>(</span><span>255</span><span>, </span><span>255</span><span>, </span><span>255</span><span>))</span>; <span>$text</span><span>-></span>transform<span>(</span><span>$image</span><span>-></span>createMatrix<span>(</span><span>'scale'</span><span>, </span><span>array</span><span>(</span><span>10</span><span>, </span><span>10</span><span>, </span><span>20</span><span>)))</span>; <span>$text</span><span>-></span>transform<span>(</span><span>$image</span><span>-></span>createMatrix<span>(</span><span>'rotation'</span><span>, </span><span>array</span><span>(</span><span>20</span><span>, </span><span>0</span><span>, </span><span>20</span><span>)))</span>; <span>$text</span><span>-></span>transform<span>(</span><span>$image</span><span>-></span>createMatrix<span>(</span><span>'move'</span><span>, </span><span>array</span><span>(-</span><span>150</span><span>, -</span><span>100</span><span>, </span><span>0</span><span>)))</span>;
效果图：
源代码下载：
