[Gzz-commits] gzz/Documentation/Manuscripts/Irregu irregu.tex

[Tuomas J. Lukka]

CVSROOT:        /cvsroot/gzz
Module name:    gzz
Changes by:     Tuomas J. Lukka <address@hidden>        02/11/20 10:26:24

Modified files:
        Documentation/Manuscripts/Irregu: irregu.tex 

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http://savannah.gnu.org/cgi-bin/viewcvs/gzz/gzz/Documentation/Manuscripts/Irregu/irregu.tex.diff?tr1=1.62&tr2=1.63&r1=text&r2=text

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Index: gzz/Documentation/Manuscripts/Irregu/irregu.tex
diff -u gzz/Documentation/Manuscripts/Irregu/irregu.tex:1.62 
gzz/Documentation/Manuscripts/Irregu/irregu.tex:1.63
--- gzz/Documentation/Manuscripts/Irregu/irregu.tex:1.62        Wed Nov 20 
09:45:31 2002
+++ gzz/Documentation/Manuscripts/Irregu/irregu.tex     Wed Nov 20 10:26:24 2002
@@ -142,17 +142,26 @@
 
 ---
 
+
+The development of non-photorealistic algorithms and user interface
+components has been motivated by examples
+from illustration and technical drawing/design:
+for example,
+ silhouette and feature line rendering\cite{saito90comprehensible},
+ cool to warm and metallic shading\cite{gooch98nonphotorealistic},
+ and fillets\cite{lukka02fillets}.
+
 
%http://portal.acm.org/citation.cfm?id=344779.345075&coll=portal&dl=ACM&type=series&idx=SERIES382&part=series&WantType=Proceedings&title=SIGGRAPH&CFID=5569444&CFTOKEN=2720008
 %      Non-photorealistic virtual environments
 %Allison W. Klein, Wilmot Li, Michael M. Kazhdan, Wagner T. Corr?a, Adam 
Finkelstein, Thomas A. Funkhouser 
-\cite{klein00nonphotorealistic}
+% \cite{klein00nonphotorealistic}
 
 
%http://portal.acm.org/citation.cfm?id=344779.344792&coll=portal&dl=ACM&type=series&idx=SERIES382&part=series&WantType=Proceedings&title=SIGGRAPH&CFID=5569444&CFTOKEN=2720008
 % Computer-generated pen-and-ink illustration of trees 
-\cite{deussen00computergenerated}
+% \cite{deussen00computergenerated}
 
 %\cite 
http://portal.acm.org/citation.cfm?id=572020.572057&coll=portal&dl=ACM&type=series&idx=SERIES260&part=series&WantType=Proceedings&title=CHI&CFID=5569444&CFTOKEN=2720008#FullText
-\cite{bjork02windowframes}
+% \cite{bjork02windowframes}
 
 %Window frames as areas for information visualization
 
@@ -160,24 +169,30 @@
 %  Staffan Bj?rk  PLAY Research Studio, Interactive Institute Box 620, SE - 
405 30 Gothenburg, Sweden
 %  Johan Redstr?m  PLAY Research Studio, Interactive Institute Box 620, SE - 
405 30 Gothenburg, Sweden
 
-Line drawing:
-Buchanan, Sousa: The edge buffer NPAR 2000
-Northrup, Markosian: Artistic silhouettes NPAR 2000
-
-Saito, Takahashi -- *the* reference (Image-space algorithm) - Computer 
Graphics Vol24 no4 %\cite{saito90comprehensible} 
-
-Examples from illustration and technical drawing/design:
- silhouette and feature line rendering\cite{saito90comprehensible},
- cool to warm and metallic shading\cite{gooch98nonphotorealistic},
- fillets\cite{lukka02fillets}.
+% Line drawing:
+% Buchanan, Sousa: The edge buffer NPAR 2000
+% Northrup, Markosian: Artistic silhouettes NPAR 2000
 
 % CARTOONS, SPEECH BUBBLES and FRAMES!!
 % NEWSPAPERS, TORN ARTICLES
 
-Contribution of this article
+% Contribution of this article
 
-In this article, we use non-photorealistic tearing as a visual cue
-in showing viewports. First, we describe the reasons and design issues and
+\begin{figure}
+\centering
+\fbox{\vbox{\vskip 3in}}
+\caption{
+a) Break out lines, b) a break out section.
+Freehand lines have been long used in engineering drawings
+to indicate that an object extends beyond the shown part.
+}
+\end{figure}
+
+In this article, we apply {\em break lines} or {\em break out section}s
+from technical drawing to viewports.
+Instead of framing a part viewport to the canvas,
+we tear a part of the canvas non-photorealistically.
+In the following sections, we first describe the reasons and design issues and
 which features are desirable. Next, we describe a mathematical solution to the
 geometric problem and discuss a hardware-accelerated implementation.
 Finally, we discuss some example applications.