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<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>导航视口</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3"><table class = "DocHeaderIntro" id = "table12"><tr><td class = "Intro1Only"><p class = "header"><p class = "abstract">
    <span class = "shortdesc">视口是 Composer 主窗格。它显示 3D 场景，该场景是所有 Composer 角色（几何图形、协同、照相机、照明等）的舞台。视口允许您在同一窗口或在使用带有文档选项卡的多文档界面的单独窗口中显示一个或多个模型。</span>

    <div class = "note collapse"><span class = "run-in.note">注:
    		</span><span class = "notecontent">视口导航影响所有 3D 角色，但不影响 2D 角色，例如 <span class = "ph filepath filepath">toolbox.smg</span> 中的四个 2D 面板。</span></div>

  </p>

</p></td></tr></table></td><td class = "DocHeader2"><table class = "DocTopicsSeeAlso" id = "table13"><tr><td class = "TopicsTitle">另请参阅</td></tr><tr><td><a title = "所有角色和视口背景都有定义其特性的属性，如颜色和不透明度。" href = "cps-t-GettingStarted-PropertiesManage.htm#cps-t-GettingStarted-PropertiesManage">管理属性</a></td></tr></table></td></tr></table>
  

  
  <div class = "body taskbody">
    <section><ol class = "ol steps"><li class = "li step stepexpand">
        将<span class = "ph uicontrol">初始</span>视图拖到视口。
        <div class = "itemgroup stepresult">
          <div class = "note collapse"><span class = "run-in.note">注:
    		</span><span class = "notecontent">如果出现消息提示视图已经更改，则单击<span class = "ph uicontrol">不保存</span>。在本教程中，始终单击<span class = "ph uicontrol">不保存</span>，除非另有说明。</span></div>

        </div>
      </li><li class = "li step stepexpand">
        放大和缩小，以更改视口角色的比例。
        <table border = "1" frame = "hsides" rules = "rows" cellpadding = "4" cellspacing = "0" summary = "" class = "simpletable choicetable choicetableborder"><colgroup><col style = "width:50%"/><col style = "width:50%"/></colgroup><thead><tr class = "sthead chhead"><th scope = "col" class = "stentry choptionhd" style = "vertical-align:bottom;text-align:left;">要缩放...</th><th scope = "col" class = "stentry chdeschd" style = "vertical-align:bottom;text-align:left;">执行操作...</th></tr></thead><tbody><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">视口的一部分</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">将指针移到相关区域，然后滚动鼠标滑轮。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">通过移动照相机而不是移动焦点</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">同时按下鼠标左键和右键，然后在视口中上下拖动鼠标。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">到角色</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">双击角色。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">以适合整个模型</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">双击视口背景。</td>
          </tr></tbody></table>
      </li><li class = "li step stepexpand">
        旋转视口中的角色。
        <table border = "1" frame = "hsides" rules = "rows" cellpadding = "4" cellspacing = "0" summary = "" class = "simpletable choicetable choicetableborder"><colgroup><col style = "width:50%"/><col style = "width:50%"/></colgroup><thead><tr class = "sthead chhead"><th scope = "col" class = "stentry choptionhd" style = "vertical-align:bottom;text-align:left;">要旋转...</th><th scope = "col" class = "stentry chdeschd" style = "vertical-align:bottom;text-align:left;">执行操作...</th></tr></thead><tbody><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">模型</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">右键单击视口背景，然后拖动。默认情况下，旋转相对于垂直轴而言。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">绕模型上的点</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">右键单击角色并拖动。围绕着红点 <img class = "image" src = "../Icons3DVIA/I_CPSRotatePoint.png"/> 进行旋转。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">自由，而不用考虑垂直轴的方向</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">按下 <span class = "ph uicontrol">Ctrl</span>，同时按住鼠标右键并拖动。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">从其观察模型的视点</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">按下 <span class = "ph uicontrol">Shift</span>，同时按住鼠标右键并拖动。</td>
          </tr><tr class = "strow chrow">
            <th style = "vertical-align:top;" scope = "row" class = "stentry choption">绕单击点 <img class = "image" src = "../Icons3DVIA/I_CPSRotatePoint.png"/> 或视口中心旋转模型</th>
            <td style = "vertical-align:top;" class = "stentry chdesc">按下 <span class = "ph uicontrol">Alt</span>，同时按住鼠标右键并拖动。</td>
          </tr></tbody></table>
      </li><li class = "li step stepexpand">
        要平移视口，在视口中单击鼠标滚轮按钮，然后拖动。
      </li><li class = "li step stepexpand">
        单击视口右上角中的罗盘 <img class = "image" src = "../CpsUserImages/Compass.png"/>。
        <div class = "itemgroup stepresult">
          <p>罗盘提供了一种查看您的模型的 x、y 和 z 平面的快速方式。单击罗盘的其他轴和面，以更改方向。</p>
        </div>
      </li><li class = "li step stepexpand">
        在功能区上，单击<span class = "ph uicontrol">主页 &gt; 导航 &gt; 对齐照相机</span><img class = "image" src = "../Icons3DVIA/I_CPSNavigateAlignmentOnFacet.png"/><span class = "ph uicontrol">&gt; 3/4 X+ Y+ Z+</span><img class = "image" src = "../Icons3DVIA/I_CPSAlignmentPlusPlusPlus.png"/>。
        <div class = "itemgroup stepresult">
          <p>视口旋转并缩放为标准正交照相机视图。</p>
          <p>
            <table class = "Remark" id = "table132"><tr><td class = "Remark"><span class = "run-in.tip">提示:
				</span><span class = "notecontent">您可以从视口默认文档属性创建自定义照相机视图。请参见 <a class = "xref" href = "cps-r-DocumentProperties-Viewport.htm#cps-r-DocumentProperties-Viewport" title = "“视口”页面允许您管理视口设置。">视口</a></span></td></tr></table>

          </p>
        </div>
      </li><li class = "li step stepexpand">
        在状态栏中（Composer 窗口的右下角)，单击<span class = "ph uicontrol">照相机透视模式</span><img class = "image" src = "../Icons3DVIA/I_CPSNavigatePerspectiveMode.png"/>。
        <div class = "itemgroup stepresult">
          <p>此命令使视口在透视模式和正交投影模式之间切换。在透视模式中，角色大小取决于其距离照相机视口的距离。正交模式消除了远离视口的影响（角色大小保持不变）。</p>
        </div>
      </li><li class = "li step stepexpand">
        再次单击<span class = "ph uicontrol">照相机透视模式</span><img class = "image" src = "../Icons3DVIA/I_CPSNavigatePerspectiveMode.png"/>，以关闭透视模式。
      </li><li class = "li step stepexpand">
        在状态栏中，单击<span class = "ph uicontrol">显示纸张</span>。<img class = "image" src = "../Icons3DVIA/I_CPSShowPaper.png" title = "Show Paper"/>。
        <div class = "itemgroup stepresult">
          <p>在视口中出现显示纸张边界的蓝色边界。定义纸张大小可确保所有用户具有相同的、独立于设备和分辨率差异的 Composer 体验。请参见 <a class = "xref" href = "cps-r-DocumentProperties-PaperSpace.htm#cps-r-DocumentProperties-PaperSpace" title = "“纸张空间”页面允许您配置纸张空间的边界和方向。">纸张空间</a>。</p>
        </div>
      </li><li class = "li step stepexpand">
        在状态栏中，拖动<span class = "ph uicontrol">缩放纸张</span>滑块。
        <div class = "itemgroup stepresult">
          <p>缩放纸张空间会重新调整所有角色的大小，包括 2D 面板。例如，您可以通过放大操作来阅读文本。您也可以通过按下 <span class = "ph uicontrol">Ctrl</span> 同时滚动鼠标滚轮来缩放纸张空间，您还可以通过按下 <span class = "ph uicontrol">Ctrl</span> 同时平移视口来平移纸张空间。</p>
        </div>
      </li><li class = "li step stepexpand">
        在状态栏中，单击<span class = "ph uicontrol">调整纸张至适合视口</span><img class = "image" src = "../Icons3DVIA/I_CPSFitPaper.png"/>，以重置纸张。
      </li></ol></section>
  </div>

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