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[Gzz-commits] manuscripts/FilletArt filletart.rst
From: |
Tuomas J. Lukka |
Subject: |
[Gzz-commits] manuscripts/FilletArt filletart.rst |
Date: |
Sat, 10 May 2003 15:19:28 -0400 |
CVSROOT: /cvsroot/gzz
Module name: manuscripts
Changes by: Tuomas J. Lukka <address@hidden> 03/05/10 15:19:28
Modified files:
FilletArt : filletart.rst
Log message:
reorg
CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/manuscripts/FilletArt/filletart.rst.diff?tr1=1.4&tr2=1.5&r1=text&r2=text
Patches:
Index: manuscripts/FilletArt/filletart.rst
diff -u manuscripts/FilletArt/filletart.rst:1.4
manuscripts/FilletArt/filletart.rst:1.5
--- manuscripts/FilletArt/filletart.rst:1.4 Sat May 10 10:50:03 2003
+++ manuscripts/FilletArt/filletart.rst Sat May 10 15:19:28 2003
@@ -4,17 +4,28 @@
Tuomas J. Lukka, Janne V. Kujala and Marketta Niemelä
-[ We've left out the official references since they're available
+[ We've left out most of the official references since
+ they're available
in the original article - hope that's as was intended..
+ If not, tell us
+
+ Asterisks like *this* signify that the word "this"
+ should be italicized.
]
[1500-2000 words - quarterpageimages * 262]
[quarterpageimages = 2 --> ]
Diagrams of graphs (*nodes* connected by *arcs*) are usually drawn
-using boxes and lines between them. For simple graphs, this is quite
-satisfactory, but when lines must cross each other and the graph is badly
-laid out, the boxes-and-lines drawings can actually be ambiguous. If the
+using boxes and lines between them.
+Displaying relationships between nodes by lines or arcs is efficient as
+physical connection makes the nodes to be perceived as parts of a single
+object, according to the law of connectivity (one of the laws of
+perceptual organization). Therefore, the viewer needs no conscious effort
+to perceive the semantic relationship between the nodes.
+For simple graphs, this is quite
+satisfactory, but when lines must cross each other and the graph is badly
+laid out, the boxes-and-lines drawings can actually be ambiguous. If the
layout cannot be changed (or if that would lead to other complications),
a rendering method which allows the viewer to distinguish between the
different possibilities is needed.
@@ -39,20 +50,18 @@
known as *blending* - creating surfaces that
meet several existing surfaces smoothly.
-Displaying relationships between nodes by lines or arcs is efficient as
-physical connection makes the nodes to be perceived as parts of a single
-object, according to the law of connectivity (one of the laws of
-perceptual organization). Therefore, the viewer needs no conscious effort
-to perceive the semantic relationship between the nodes. Fillets aim to
+Fillets aim to
enhance the perception of connectivity by implementing the connecting
-lines with continuity. The node and the connecting line form one object,
+lines with continuity.
+The node and the connecting line form one object,
without an abrupt disruption in perception, thus making it easy to follow
the connection between nodes.
-
Our use of fillets is entertainingly analogous to the use in mechanical
-engineering: fillets ensure that the human perception system
+engineering:
+fillets ensure that the human perception system
doesn't break an object and a connection starting
from it into two distinct objects.
+
The filling of connections in graph diagrams
conforms to the Gestalt
principle of good