⭐ 欢迎来到虫虫下载站！ | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站
📤 上传资源

📄 第四章 图形输入与交互技术.htm

📁 计算机图形学教程计算机图形学教程
💻 HTM
字号:
🔍 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0058)http://www.ekany.com/wdg98/cg/contents/chapter4/les411.htm -->
<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:o = 
"urn:schemas-microsoft-com:office:office" xmlns:w = 
"urn:schemas-microsoft-com:office:word"><HEAD><TITLE>第四章 图形输入与交互技术</TITLE>
<META http-equiv=Content-Type content="text/html; charset=GB2312">
<META content=FrontPage.Editor.Document name=ProgId>
<META content="MSHTML 6.00.2800.1106" name=GENERATOR>
<META content="Microsoft Word 9" name=Originator><LINK 
href="les411.files/filelist.xml" rel=File-List><!--[if gte mso 9]><xml> <o:DocumentProperties>  <o:Author>zlj</o:Author>  <o:Template>Normal</o:Template>  <o:LastAuthor>zlj</o:LastAuthor>  <o:Revision>3</o:Revision>  <o:TotalTime>5</o:TotalTime>  <o:Created>1999-04-16T02:08:00Z</o:Created>  <o:LastSaved>1999-04-16T03:33:00Z</o:LastSaved>  <o:Pages>1</o:Pages>  <o:Words>139</o:Words>  <o:Characters>795</o:Characters>  <o:Company>CSCIMS</o:Company>  <o:Lines>6</o:Lines>  <o:Paragraphs>1</o:Paragraphs>  <o:CharactersWithSpaces>976</o:CharactersWithSpaces>  <o:Version>9.2812</o:Version> </o:DocumentProperties></xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument>  <w:PunctuationKerning/>  <w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing>  <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery>  <w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery>  <w:Compatibility>   <w:SpaceForUL/>   <w:BalanceSingleByteDoubleByteWidth/>   <w:DoNotLeaveBackslashAlone/>   <w:ULTrailSpace/>   <w:DoNotExpandShiftReturn/>   <w:AdjustLineHeightInTable/>   <w:UseFELayout/>  </w:Compatibility> </w:WordDocument></xml><![endif]-->
<STYLE>@font-face {
	font-family: 宋体;
}
@font-face {
	font-family: 黑体;
}
@font-face {
	font-family: @宋体;
}
@font-face {
	font-family: @黑体;
}
@page  {mso-page-border-surround-header: no; mso-page-border-surround-footer: no; }
@page Section1 {size: 595.3pt 841.9pt; margin: 72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin: 42.55pt; mso-footer-margin: 49.6pt; mso-paper-source: 0; layout-grid: 15.6pt; }
P.MsoNormal {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-style-parent: ""; mso-pagination: none; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt
}
LI.MsoNormal {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-style-parent: ""; mso-pagination: none; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt
}
DIV.MsoNormal {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-style-parent: ""; mso-pagination: none; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt
}
H1 {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 22pt; MARGIN: 17pt 0cm 16.5pt 21.6pt; TEXT-INDENT: -21.6pt; LINE-HEIGHT: 240%; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-fareast-language: EN-US; mso-pagination: lines-together; mso-fareast-font-family: 黑体; mso-font-kerning: 22.0pt; mso-style-next: 正文; mso-outline-level: 1; mso-layout-grid-align: none
}
H2 {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 16pt; MARGIN: 13pt 0cm; TEXT-INDENT: 21.25pt; LINE-HEIGHT: 171%; FONT-FAMILY: Arial; TEXT-ALIGN: justify; mso-fareast-language: EN-US; mso-pagination: lines-together; mso-fareast-font-family: 黑体; mso-font-kerning: 1.0pt; mso-style-next: 正文; mso-outline-level: 2; mso-layout-grid-align: none; mso-bidi-font-family: "Times New Roman"
}
A:link {
	COLOR: blue; TEXT-DECORATION: underline; text-underline: single
}
SPAN.MsoHyperlink {
	COLOR: blue; TEXT-DECORATION: underline; text-underline: single
}
A:visited {
	COLOR: purple; TEXT-DECORATION: underline; text-underline: single
}
SPAN.MsoHyperlinkFollowed {
	COLOR: purple; TEXT-DECORATION: underline; text-underline: single
}
P.MsoDocumentMap {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; BACKGROUND: navy; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-pagination: none; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt
}
LI.MsoDocumentMap {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; BACKGROUND: navy; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-pagination: none; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt
}
DIV.MsoDocumentMap {
	TEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10.5pt; BACKGROUND: navy; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; TEXT-ALIGN: justify; mso-pagination: none; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt
}
DIV.Section1 {
	page: Section1
}
OL {
	MARGIN-BOTTOM: 0cm
}
UL {
	MARGIN-BOTTOM: 0cm
}
</STYLE>
</HEAD>
<BODY lang=ZH-CN style="TEXT-JUSTIFY-TRIM: punctuation; tab-interval: 21.0pt" 
vLink=purple link=blue>
<H1 align=left><FONT face=楷体_GB2312 size=6><SPAN 
style="mso-fareast-language: ZH-CN">第四章<SPAN 
style="mso-fareast-language: ZH-CN"> </SPAN><SPAN 
style="FONT-FAMILY: 黑体; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'">图形输入与交互技术</SPAN><SPAN 
lang=EN-US 
style="mso-fareast-language: ZH-CN"><o:p></o:p></SPAN></SPAN></FONT></H1>
<H2 style="TEXT-INDENT: 0cm"><FONT face=楷体_GB2312 size=5><SPAN 
style="mso-fareast-language: ZH-CN"><SPAN lang=EN-US 
style="mso-fareast-language: ZH-CN">4.1 </SPAN><SPAN 
style="FONT-FAMILY: 黑体; mso-fareast-language: ZH-CN; mso-ascii-font-family: Arial">逻辑输入设备</SPAN><SPAN 
lang=EN-US 
style="mso-fareast-language: ZH-CN"><o:p></o:p></SPAN></SPAN></FONT></H2>
<P class=MsoNormal style="TEXT-INDENT: 18pt"><SPAN 
style="mso-hansi-font-family: Times New Roman"><FONT face=楷体_GB2312 
size=4>图形软件所需的信息从各种各样的图形设备中输入。为了使图形软件包独立于具体的硬件设备，图形输入命令不涉及到具体的输入设备，而只涉及到该命令所需的数据性质。根据图形输入信息的不同性质，<SPAN 
lang=EN-US>GKS和PHIGS把输入设备在逻辑上分成以下几类：<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: 36.0pt"><FONT 
face=楷体_GB2312 size=4><![if !supportLists]><SPAN lang=EN-US>1<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;</SPAN></SPAN><SPAN 
style="mso-hansi-font-family: Times New Roman">定位设备（<SPAN 
lang=EN-US>Locator）：定位设备用来指定用户空间的一个位置，比如说用来指定一个圆的圆心，指定一个组装零件的装配位置，指定图上加注文字的起始点等等。其输入方式包括：直接或间接在屏幕上进行，通过方向命令，数值坐标等等。其对应的物理设备包括：光笔、触摸屏、数字化仪、鼠标、操纵杆、跟踪球、键盘的数字键等。<o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: 36.0pt"><FONT 
face=楷体_GB2312 size=4><![if !supportLists]><SPAN lang=EN-US>2<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;</SPAN></SPAN><![endif]><SPAN 
style="mso-hansi-font-family: Times New Roman">描画设备（<SPAN 
lang=EN-US>Stroke）:描画设备用来指定用户空间的一组有序点的位置，比如用来指定一条折线的顶点组，指定一条自由曲线的控制点等。其输入方式与对应的物理设备基本和定位设备相一致。<o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: 36.0pt"><FONT 
face=楷体_GB2312 size=4><![if !supportLists]><SPAN lang=EN-US>3<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;</SPAN></SPAN><![endif]><SPAN 
style="mso-hansi-font-family: Times New Roman">定值设备（<SPAN 
lang=EN-US>Valuator）:定值设备用来为应用程序输入一个值（实数），比如在旋转某一对象时用来输入一个旋转角度，缩放时输入一个比例因子，以及输入文字高度、字体大小比例因子等。其输入方式包括：直接输入数值、通过字符串取值、通过比例尺输入、上下计数控制命令等。对应的物理设备包括旋钮、键盘、数字化仪、鼠标、方向键、编程功能键等。<o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: 36.0pt"><FONT 
face=楷体_GB2312 size=4><![if !supportLists]><SPAN lang=EN-US>4<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;</SPAN></SPAN><![endif]><SPAN 
style="mso-hansi-font-family: Times New Roman">选择设备（<SPAN 
lang=EN-US>Choice）：选择设备用来为应用程序在多个选项中选定一项，比如用来选择菜单确定目标。其输入方式包括：直接或间接在屏幕上进行、字符串名字、时间扫描、手写输入、声音输入等。其对应的物理设备包括光笔、触摸屏、数字化仪、鼠标、操纵杆、跟踪球、字符串输入设备、编程功能键、声音识别仪。<o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: 36.0pt"><FONT 
face=楷体_GB2312 size=4><![if !supportLists]><SPAN lang=EN-US>5<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;</SPAN></SPAN><![endif]><SPAN 
style="mso-hansi-font-family: Times New Roman">拾取设备（<SPAN 
lang=EN-US>Pick）：拾取设备用来在处理的模型中选取一个对象，从而为应用操作处理确定目标。其输入方式包括：直接在屏幕上进行、时间扫描、字符串名字。其对应的物理设备包括：各种定位设备、编程功能键、字符串输入设备。<o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal 
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: 36.0pt"><FONT 
face=楷体_GB2312 size=4><![if !supportLists]><SPAN lang=EN-US>6<SPAN 
style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp;</SPAN></SPAN><![endif]><SPAN 
style="mso-hansi-font-family: Times New Roman">字符串设备（<SPAN 
lang=EN-US>String）:字符串设备用来向应用程序输入字符串，比如为某一对象确定名字，为某一图纸输入加注文字。其输入方式包括：键盘、手写输入、声音输入、菜单输入，其对应的物理设备：数字、字母键盘，数字化仪，光笔，声音识别仪，触压板等。<o:p></o:p></SPAN></SPAN></FONT></P>
<P class=MsoNormal><SPAN lang=EN-US><FONT face=楷体_GB2312 size=4><![if !supportEmptyParas]><![endif]>&nbsp;<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><A 
href="http://www.ekany.com/wdg98/cg/contents/chapter3/les333.htm"><FONT 
size=4><FONT face=楷体_GB2312>&lt;<SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上一节</SPAN>&gt;</FONT></FONT></A><FONT 
face=楷体_GB2312 size=4>&nbsp;&nbsp; <A 
href="http://www.ekany.com/wdg98/cg/contents/chapter4/les421.htm">&lt;<SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下一节</SPAN>&gt; 
</A>&nbsp; <A 
href="http://www.ekany.com/wdg98/cg/tutorial/chapter4/lesson4-1.htm">&lt;</A></FONT></SPAN><FONT 
size=4><A 
href="http://www.ekany.com/wdg98/cg/tutorial/chapter4/lesson4-1.htm"><FONT 
face=楷体_GB2312><SPAN 
style="mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">返回</SPAN><SPAN 
lang=EN-US>&gt;</SPAN></FONT></A></FONT></P></BODY></HTML>

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -