利用PhotoShop制作齿轮标志

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<SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">1.</SPAN>创建150*150的画布，并用白色填充。将画布模式改为“灰度”（<U><B>图像</B></U> &gt;&nbsp;<U><B>模式</B></U> &gt; <U><STRONG>灰度</STRONG></U>）。<BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">2.</SPAN>创建新的图层。选择矩形选取工具并选择固定大小，设置矩形宽35像素，高145像素。 <BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074058861.jpg" border=0></CENTER><BR><BR>使用油漆桶工具给矩形填充浅灰色（#918E8E），取消选择（Ctrl+D）。<BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">3.</SPAN>复制矩形（<STRONG>Ctrl+J</STRONG>）并旋转90度（编辑 &gt;&gt; 变换 &gt;&gt; 顺时针90°）。<BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">4.</SPAN>复制矩形（<STRONG>Ctrl+J</STRONG>）并旋转45度（编辑 &gt;&gt; 变换 &gt;&gt; 旋转）。<BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074100209.jpg" border=0></CENTER><BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">5.</SPAN>复制矩形（<STRONG>Ctrl+J</STRONG>）水平翻转（编辑 &gt;&gt; 变换 &gt;&gt; 水平翻转）。<BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">6.</SPAN>合并所有矩形层（<STRONG>Ctrl+E</STRONG>）。<BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074102389.jpg" border=0></CENTER><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">7.</SPAN>创建新的图层，使用圆形选框工具在该图层选择直径120的圆形选区。<BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074109320.jpg" border=0></CENTER>
<P><BR><BR>使用相同的颜色填充（<STRONG>918E8E</STRONG>），取消选择（<STRONG>Ctrl+D</STRONG>），与矩形层合并，简单的齿轮就完成了。</P>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074115565.jpg" border=0></P>
<P><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">8.</SPAN>按下<STRONG>CTRL</STRONG>并点击齿轮所在层获得选区，打开通道面板，创建新的通道并命名为“alpha”，使用油漆桶工<BR>具填充白色，取消选择（<STRONG>Ctrl+D</STRONG>）。</P>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074121866.jpg" border=0></P><BR><BR><U><B>滤镜</B></U>&nbsp;&gt;&gt;&nbsp;<U><B>模糊</B></U> &gt;&gt;&nbsp;<U><B>高斯模糊</B></U> 半径4像素。
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074128801.jpg" border=0></CENTER><BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">9.</SPAN><U><B>图像</B></U> &gt;&gt;&nbsp;<STRONG><U>调整</U></STRONG> &gt;&gt;&nbsp;<U><B>色阶</B></U> 输入如下数值。<BR>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074134944.jpg" border=0></P><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">10.<FONT size=2>在通道面板中左键点击</FONT></SPAN>Alpha层，按下<STRONG>Ctrl</STRONG>并点击该层获得选区。返回图层面板并创建新的图层，编辑<BR>&nbsp;&gt;&gt; 填充，选用黑色填充选区。 <BR>
<CENTER><IMG alt="user posted image" src="http://img97.imageshack.us/img97/7228/gearstep4vi.jpg" border=0></CENTER><BR><BR>
<DIV align=left>删除原灰色图层。<BR></DIV>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074137201.jpg" border=0></P><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">11.</SPAN>图层 &gt;&gt; 图层样式 &gt;&gt; 投影，混合模式“正片叠底”。<BR>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074144227.jpg" border=0></P>斜面和浮雕，样式 &gt;&gt; 内斜面<BR><BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074156218.jpg" border=0></CENTER>
<P>渐变叠加，按下图设置渐变效果。</P>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074204363.jpg" border=0></CENTER><BR><BR>得到如下效果。<BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074235308.jpg" border=0></CENTER>
<P><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">12.<FONT size=2>为齿轮添加细节，</FONT></SPAN>使用椭圆选取工具在齿轮正中创建圆形选区。</P>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074238595.jpg" border=0></CENTER>
<P>复制选区到新图层（<B>Ctrl+J</B> ），将新图层命名为“圆1”。</P>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074241483.jpg" border=0></P><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">13.</SPAN>使用椭圆选取工具在“圆1”层创建圆形选区，复制选区到新图层（<STRONG>Ctrl+J</STRONG>），将新图层命名为“圆2”。
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074246769.jpg" border=0></CENTER><BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">14.</SPAN>返回“圆1”层，如下图所示使用椭圆选取工具创建选区。<BR>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074249689.jpg" border=0></P><BR><BR>删除，取消选区（<STRONG>Ctrl+D</STRONG>）。<BR><BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">15.</SPAN>按下图所示在“圆2”层创建圆形选区，删除。<BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074251464.jpg" border=0></CENTER><BR><BR>选择齿轮层，删除，这时再取消选区（<STRONG>Ctrl+D</STRONG>）。<BR>
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074254900.jpg" border=0></CENTER><BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">16.</SPAN>在“圆1”层的圆环上创建圆形选区，并删除。
<CENTER><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074256161.jpg" border=0></CENTER><BR><BR><SPAN style="FONT-SIZE: 14pt; LINE-HEIGHT: 100%">17.</SPAN>删除白色背景层。<BR>
<P align=center><IMG alt="user posted image" src="http://www.cgfancy.com/Article/UploadFiles/200604/20060410074259443.png" border=0></P><BR>通过练习，可以尝试为齿轮添加更多的细节，变换齿轮的颜色等。<BR>
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