anytb1000 发表于 2011-12-22 08:53

3dmax入门 第四章:编辑关键帧

<span class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Arial; font-size: 12px; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; "><p style="line-height: normal; ">内容摘自:<a href="http://www.henshizai.com/" target="_blank" style="color: rgb(99, 72, 51); font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: normal; text-decoration: none; line-height: normal; " target="_blank">烟雨江南</a>&nbsp;&nbsp;的&nbsp;<a href="http://www.henshizai.com/sjgj_3dmax_base/" target="_blank" style="color: rgb(99, 72, 51); font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: normal; text-decoration: none; line-height: normal; " target="_blank">3dmax基础教程</a>&nbsp;的 “<a href="http://www.henshizai.com/2011/sjgj_3dmax_base_0612/7754.html" target="_blank" style="color: rgb(99, 72, 51); font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: normal; text-decoration: none; line-height: normal; " target="_blank">3dmax入门 第四章:编辑关键帧</a>”</p><p style="line-height: normal; ">全文内容参考或者查看原文内容截图,点击链接 “<a href="http://www.henshizai.com/2011/sjgj_3dmax_base_0612/7754.html" target="_blank" style="color: rgb(99, 72, 51); font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: normal; text-decoration: none; line-height: normal; " target="_blank">3dmax入门 第四章:编辑关键帧</a>” 即可</p><p style="line-height: normal; ">&nbsp;</p><p style="line-height: normal; ">&nbsp; 4.2 &nbsp;编辑关键帧</p><p style="line-height: normal; ">关键帧由时间和数值两项内容组成。编辑关键帧常常涉及改变时间和数值。3ds max提供了几种访问和编辑关键帧的方法。</p>在视口中<p style="line-height: normal; ">使用3ds max工作的时候总是需要定义时间。常用的设置当前时间的方法是拖曳时间滑动块。当时间滑动块放在关键帧之上的时候,对象就被一个白色方框环绕。如果当前时间与关键帧一致,就可以打开动画按钮来改变动画数值。</p>轨迹栏(Track Bar)<p style="line-height: normal; ">Track Bar位于时间滑动块的下面。当一个动画对象被选择后,关键帧按矩形的方式显示在Track Bar中。Track Bar可以方便地访问和改变关键帧的数值。</p>运动面板<p style="line-height: normal; ">运动面板是3ds max的6个面板之一。可以在运动面板中改变关键帧的数值。</p>轨迹视图(Track View)<p style="line-height: normal; ">Track View是制作动画的主要工作区域。基本上在3ds max中的任何动画都可以通过Track View进行编辑。</p><p style="line-height: normal; ">不管使用哪种方法编辑关键帧,其结果都是一样的。下面首先介绍使用轨迹栏Track Bar来编辑关键帧。</p><p style="line-height: normal; ">在下面的例子中,将使用轨迹栏来编辑关键帧。</p><p style="line-height: normal; ">1. 启动3ds max,在菜单栏中选取File / Open,打开本书配套光盘中的Samples\ch04\ ch04_02.max文件。该文件中包含了一个已经被设置了动画的球,球的动画中有两个关键帧。第1个在第0帧,第2个在第50帧。</p><p style="line-height: normal; ">2. 在前视口单击球,选择它。</p><p style="line-height: normal; ">3. 在轨迹栏上第50帧的关键帧处单击鼠标右键。弹出一个菜单,见图4.5。</p><p style="line-height: normal; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025707647.jpg" height="235" width="250" style="line-height: normal; display: inline; width: 250px; height: 235px; "></p><p style="line-height: normal; ">图4.5</p><p style="line-height: normal; ">4. 从弹出的菜单上选取Sphere01: Position,出现Sphere01:Position对话框,见图4.6。</p><p style="line-height: normal; ">图4.6包含如下信息:</p><p style="line-height: normal; ">—&nbsp; 标记为1的区域指明当前的关键帧,这里是第2个关键帧。</p><p style="line-height: normal; ">—&nbsp; 标记为2的区域代表第2个关键帧处对象的位置。这里X坐标为75.0,Y和Z的数值为0.0。</p><p style="line-height: normal; ">—&nbsp; 标记为3的区域中,In和Out按钮是关键帧的切线类型,它控制关键帧处动画的平滑程度。后面还要详细介绍切线类型。</p><p style="line-height: normal; ">5. 在Sphere01:Position对话框中,将Z Value改变为20,见图4.7。</p><p style="line-height: normal; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025707199.gif" height="30" width="100" style="line-height: normal; width: 100px; height: 30px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025707953.gif" height="14" width="81" style="line-height: normal; display: inline; width: 81px; height: 14px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025707199.gif" height="30" width="100" style="line-height: normal; width: 100px; height: 30px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025708143.gif" height="14" width="91" style="line-height: normal; width: 91px; height: 14px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025707953.gif" height="14" width="81" style="line-height: normal; display: inline; width: 81px; height: 14px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025709170.gif" height="69" width="30" style="line-height: normal; display: inline; width: 30px; height: 69px; ">&nbsp;&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025709463.jpg" height="277" width="235" style="line-height: normal; display: inline; width: 235px; height: 277px; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025709379.jpg" height="276" width="234" style="line-height: normal; display: inline; width: 234px; height: 276px; "></p><p style="line-height: normal; ">图4.6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 图4.7</p><p style="line-height: normal; ">6. 关闭Sphere01:Position对话框。</p><p style="line-height: normal; ">7. 在动画控制区域,单击&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025710993.jpg" height="21" width="23" style="line-height: normal; display: inline; width: 23px; height: 21px; ">&nbsp;Play Animation按钮,在激活的视口中播放动画,球沿着Z方向升起。</p><p style="line-height: normal; ">关键帧对话框也可以用来改变关键帧的时间。</p><p style="line-height: normal; ">8. 在动画控制区域,单击&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025713224.jpg" height="23" width="23" style="line-height: normal; display: inline; width: 23px; height: 23px; ">&nbsp;Stop Animation按钮,停止播放动画。</p><p style="line-height: normal; ">9. 在轨迹栏上第50帧处单击鼠标右键。</p><p style="line-height: normal; ">10. 在弹出的菜单上选取Sphere01: Position。</p><p style="line-height: normal; ">11. 在出现的Sphere01:Position对话框中向下拖曳Time微调器按钮,见图4.8。这样关键帧就沿着轨迹线移动到了新的位置。</p><p style="line-height: normal; ">12. 在Sphere01:Position对话框,将时间设置回第50帧。</p><p style="line-height: normal; ">13. 关闭Sphere01:Position对话框。也可以直接在轨迹栏上改变关键帧的位置。</p><p style="line-height: normal; ">14. 在轨迹栏上将鼠标光标放在第50帧。</p><p style="line-height: normal; ">15. 单击并向右拖曳关键帧。当将关键帧拖曳的偏离当前位置时,新的位置显示在状态栏上,见图4.9。</p><p style="line-height: normal; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025713647.gif" height="28" width="94" style="line-height: normal; display: inline; width: 94px; height: 28px; "></p><p style="line-height: normal; ">&nbsp;</p><p style="line-height: normal; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025714572.gif" height="34" width="35" style="line-height: normal; display: inline; width: 35px; height: 34px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025714987.gif" height="16" width="99" style="line-height: normal; display: inline; width: 99px; height: 16px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025714149.jpg" height="331" width="281" style="line-height: normal; display: inline; width: 281px; height: 331px; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025714278.jpg" height="52" width="268" style="line-height: normal; display: inline; width: 268px; height: 52px; "></p><p style="line-height: normal; ">&nbsp;</p><p style="line-height: normal; ">图4.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;图4.9</p><p style="line-height: normal; ">16. 将关键帧移动到第60帧。</p><p style="line-height: normal; ">拖曳关键帧的时候,关键帧的值保持不变,只改变时间。此外,关键帧偏移的数值只在状态行显示。当释放鼠标后,状态行的显示消失。</p><p style="line-height: normal; ">在轨迹栏中快速复制关键帧的方法是按下Shift键后移动关键帧。复制关键帧后增加了一个关键帧,但是两个关键帧的数值仍然是相等的。</p><p style="line-height: normal; ">17. 在轨迹栏选择第60帧处的关键帧。</p><p style="line-height: normal; ">18. 按下Shift键,将关键帧移动到第80帧。</p><p style="line-height: normal; ">将关键帧第60帧复制到了第80帧。但是,这两个关键帧的数值相等。</p><p style="line-height: normal; ">19. 在第80帧处单击鼠标右键,在弹出的菜单上选取Sphere01: Position。</p><p style="line-height: normal; ">20. 在Sphere01: Position对话框中,将Z Value设置为0.0,将X Value设置为90.0,见图4.10。</p><p style="line-height: normal; ">第80帧处的关键帧是第3个关键帧,它显示在Key Info对话框中。</p><p style="line-height: normal; ">21. 单击Sphere01: Position对话框中向左的箭头。</p><p style="line-height: normal; ">现在Key Info对话框显示第2个关键帧的数值,见图4.11。</p><p style="line-height: normal; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025715543.gif" height="30" width="30" style="line-height: normal; display: inline; width: 30px; height: 30px; "><img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025715828.jpg" height="257" width="218" style="line-height: normal; display: inline; width: 218px; height: 257px; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025715598.jpg" height="259" width="220" style="line-height: normal; display: inline; width: 220px; height: 259px; "></p><p style="line-height: normal; ">图4.10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 图4.11</p><p style="line-height: normal; ">技巧:可以在Sphere01: Position对话框中快速切换关键帧,并调整关键帧的数值。</p><p style="line-height: normal; ">&nbsp;</p><p style="line-height: normal; ">22. 关闭Sphere01: Position对话框。</p><p style="line-height: normal; ">23. 在动画控制区域单击&nbsp;<img src="http://www.henshizai.com/uploadfile/2011/0612/20110612025710993.jpg" height="21" width="23" style="line-height: normal; display: inline; width: 23px; height: 21px; ">&nbsp;Play Animation按钮,播放动画。注意观察球的动画。</p><p style="line-height: normal; "></p><p style="line-height: normal; ">&nbsp;</p></span>
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