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📁 计算机图形学网络课程
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<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:24.0pt;font-family:隶书;color:blue'>第一章 绪论<span lang=EN-US><o:p></o:p></span></span></p>

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  10.0pt;font-family:幼圆;color:yellow'>教学目标</span><span lang=EN-US
  style='font-size:12.0pt;font-family:宋体'><o:p></o:p></span></p>
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  <p class=MsoNormal style='mso-line-height-alt:9.75pt'><span style='font-size:
  10.0pt;font-family:幼圆;color:#996633'>总体目标：理解计算机图形学的基本思想。</span><span
  lang=EN-US style='font-size:12.0pt;font-family:宋体'><o:p></o:p></span></p>
  </td>
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  10.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman";color:blue'>通过本章的学习，应能做到：</span><span lang=EN-US
  style='font-size:12.0pt;font-family:宋体'><o:p></o:p></span></p>
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  <p style='mso-line-height-alt:.75pt'><span style='font-size:10.0pt;
  font-family:楷体_GB2312'>掌握下列概念：<span lang=EN-US><a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_005.htm#2"><span
  style='color:red'>图象</span></a>、<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_005.htm#1"><span
  style='color:red'>图形</span></a>、<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_008.htm#1"><span
  style='color:red'>计算机辅助设计与制造</span></a>、<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_009.htm#1"><span
  style='color:red'>可视化</span></a>、<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_015.htm#1"><span
  style='color:red'>图形显示</span></a>和<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_015.htm#2"><span
  style='color:red'>图形绘制</span></a>。</span></span></p>
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  <p style='line-height:130%'><span style='font-size:10.0pt;font-family:楷体_GB2312'>了解<span
  lang=EN-US><a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_005.htm"><span
  style='color:red'>计算机图形学的研究内容</span></a>及<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_006.htm"><span
  style='color:red'>发展简史</span></a>、<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_007.htm"><span
  style='color:red'>计算机图形学的应用</span></a>和<a
  href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_014.htm"><span
  style='color:red'>图形设备</span></a>的基本原理。</span></span></p>
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<p class=MsoNormal><span style='font-size:13.5pt;font-family:隶书;color:purple'>内容简介<span
lang=EN-US><o:p></o:p></span></span></p>

<p style='margin-top:9.0pt;line-height:130%'><span style='font-size:10.0pt;
font-family:仿宋_GB2312'>计算机图形学是近<span lang=EN-US>30年来发展迅速、应用广泛的新兴学科，是计算机科学最活跃的分支之一。如何在计算机中表示<a
href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_005.htm#1"><span
style='color:red'>图形</span></a>、以及利用计算机进行图形的计算、处理和显示的相关原理与算法，构成了其主要研究内容。<o:p></o:p></span></span></p>

<p style='margin-top:9.0pt;line-height:130%'><span lang=EN-US style='font-size:
10.0pt;mso-ascii-font-family:仿宋_GB2312;mso-fareast-font-family:仿宋_GB2312'>&nbsp;&nbsp;&nbsp;</span><span
lang=EN-US style='font-size:10.0pt;font-family:仿宋_GB2312'> 计算机图形学的研究始于50年代，当时只是为了在绘图仪和阴极射线管（CRT）屏幕上输出图形，60年代是计算机图形学得到确立并蓬勃发展的时期，70年代则是这方面技术进入实用化的阶段。不过，直到80年代初，和别的学科相比，计算机图形学还是一个很小的学科领域，主要原因是由于图形设备昂贵、功能简单、基于图形的应用软件缺乏，随着光栅图形显示器的出现，计算机图形系统才得到了很大的发展和广泛的应用。进入90年代，计算机图形学的功能除了随着计算机图形设备的发展而提高外，其软件技术、系统更加成熟，并朝着标准化、集成化和智能化的方向发展。事实上，图形学的应用从某种意义上标志着计算机软、硬件的发展水平。计算机图形学之所以能在它短短的30多年历史中获得飞速发展，其根本原因是图形为传递信息的最主要媒体之一。人们要利用计算机进行工作，必须有任何计算机之间传递信息的手段</span><span
lang=EN-US style='font-size:10.0pt;mso-ascii-font-family:仿宋_GB2312;mso-fareast-font-family:
仿宋_GB2312'>——</span><span style='font-size:10.0pt;font-family:仿宋_GB2312'>人机界面。人机界面从早期的读卡机及控制板上的开关、指示灯发展到键盘和字符中断，再发展到基于键盘、鼠标、光笔等输入设备和光栅显示器的图形用户界面，而最终必然过渡到带给用户身临其境感觉的三维用户界面</span><span
lang=EN-US style='font-size:10.0pt;mso-ascii-font-family:仿宋_GB2312;mso-fareast-font-family:
仿宋_GB2312'>——</span><span style='font-size:10.0pt;font-family:仿宋_GB2312'>虚拟环境（虚拟现实）。人机界面的发展过程正好对应着计算机技术从初级到高级的发展过程。计算机图形学来源于生活、科学、工程技术、艺术、音乐、舞蹈、电影制作等，反过来，它又大大促进了这些领域的发展。</span></p>

<p style='text-indent:20.25pt;line-height:130%'><span style='font-size:10.0pt;
font-family:仿宋_GB2312'>本章将从计算机图形学的</span><span lang=EN-US style='font-size:
10.0pt;font-family:楷体_GB2312'><a
href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_005.htm"><span
style='color:red'>研究内容</span></a></span><span style='font-size:10.0pt;
font-family:仿宋_GB2312'>、</span><span lang=EN-US style='font-size:10.0pt;
font-family:楷体_GB2312'><a
href="http://learn.bitsde.com/hep/jisuanjituxing/Chapter1/CG_Txt_1_007.htm"><span
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