 |
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The QMG package generates finite element meshes in two and
three dimensions.
QMG is free software distributed at the source-code
level. Although QMG is free, it is copyrighted by Cornell University.
The package includes some geometric modeling software, the mesh generator
itself, and an elementary
finite element solver. The software is written in C++, Tcl/Tk and
Matlab. The author of most of
QMG is S. Vavasis. QMG runs on several Unix platforms
and on Intel-based PC's under Windows NT.
The software includes test cases with graphics to illustrate
its features.
The mesh generator is a quadtree/octree
algorithm due to S. Mitchell and S. Vavasis.
Please select a topic from the following list.
- An overview and two
examples of the QMG package
- Installation instructions
- Geometric objects and datatypes
- The mesh generator
- The finite element package
- Graphics in QMG
- Reference on each function
The following pages cover subtopics of the above major topics:
- Using QMG via shell commands
- Differences between QMG 1.1 and QMG 2.0
- Specifying user-defined functions
- Brief synopsis of Tcl syntax
- Notes on the source code
- Copyright and license of QMG
Acknowledgements
My colleague Paul Chew gave me advice on computational geometry. My
colleague Brian Smith introduced me to Tcl/Tk. This software
would not exist without the collaborative research effort
with Scott Mitchell to develop the underlying algorithm.
Work on QMG 1.0 was supported by the Division of Advanced Scientific Computing
of the National Science Foundation through a Presidential Young Investigator
grant. Matching funds were received from Xerox, AT&T, Tektronix,
IBM, and Sun Microsystems (not all during the same year).
Development of the Windows versions of QMG was supported by
grants from Microsoft and Intel.
Support from Argonne National Laboratory for
work on QMG 1.1 is gratefully acknowledged. QMG 1.1 was also developed
with support from the National Science Foundation at Cornell.
Support for QMG 2.0 was received from the
National Science Foundation
through the grand-challenge grant
“Crack
Propagation on Teraflop
Computers,” grant number
EIA-9726388.
Any opinions, findings, and conclusions or recommendations expressed
in this material are those of the author(s) and do not necessarily
reflect the views of the National Science Foundation.
Part of the work on QMG 2.0 was done while the author was visiting
Bell Laboratories (Lucent Technologies).
Helpful advice and suggestions received from
other members of the project including
Bruce Carter,
Dave Chen,
Paul Chew,
Nikos Chrisochoides,
Gerd Heber,
Anthony Ingraffea,
Roland Krause,
Keshav Pingali,
Chris Myers,
Dave Schneider,
Paul Stodghill
and
Wash Wawrzynek.
Chris Myers and Wash Wawrzynek also wrote part of the
data structure definition.
− Steve Vavasis
This documentation is written by
Stephen A.
Vavasis and is
copyright ©1999 by Cornell
University.
Permission to reproduce this documentation is granted provided this
notice remains attached. There is no warranty of any kind on
this software or its documentation. See the accompanying file
'copyright'
for a full statement of the copyright.
Back to
Vavasis's mesh generation home page.
Stephen A. Vavasis, Computer Science Department, Cornell University,
Ithaca, NY 14853, vavasis@cs.cornell.edu
퍼왔습니다.
http://www.cs.cornell.edu/home/vavasis/qmg2.0/qmg2_0_home.html
추가:QMAGE
| “Qmage는 빠르고 풍부한 유저 인터페이스구현을 위해 설계된 유저인터페이스 이미지용 코덱 입니다.” | |
최근 모바일 디바이스 제조업체들은 유저 인터페이스의 세련된 디자인과 다양한 기능들을 지원하기 위해 점점 많은 이미지를 사용하고 있으며, 이는 메모리 비용 증가 및 유저인터페이스 성능 저하라는 문제점을 야기하고 있습니다. Qmage는 높은 압축률과 빠른 복원 성능을 제공함으로써 메모리 사용량을 획기적으로 절감하고, 유저인터페이스 응답시간을 단축시켜 줍니다. Qmage의 압축모듈은 80~90%의 압축률을 가지며, 복원모듈은 매우 빨라서(zlib대비 5~6배) 압축된 이미지의 실시간 복원이 가능합니다. Qmage는 아주 간단한 API와 라이브러리로 되어 있어서 모바일 기기에 쉽게 적용할 수 있습니다. Qmage 제품에는 툴, 라이브러리, 샘플 코드, 문서들이 포함되어 있습니다.
|
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 높은 압축률 - 무 손실 압축기준 80%~90%의 압축률 - 손실 압축이나 Animation 압축을 이용하면 압축률 추가 향상 빠른 디코더 성능- 15~20ms (320x240 image) : Arm9 146Mhz 환경 - Decoding 속도가 빠른데다가 높은 압축률로 File Loading 시간이 짧아지기 때문에 압축을 안 한 이미지를 Display 하는 것보다 빨라질 수 있음. 다양한 Format 지원 - Encoder (input) : BMP(8/16/24/32 bpp), PNG, Raw Image - Decoder (output) : RGB565, RGB888, RGBA5658, RGBA8888 다양한 Encoding Option 제공 - 무손실, 손실 압축 - 손실 압축시 압축률 세부 조정 가능 - Animation 압축기능 : 압축률 향상 - 디더링 기능 (화질 개선) - 투명 컬러 처리 (ChromaKey) - Little Endian / Big Endian 지원 |
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Release Date: 19 May 2011.
Samsung has released the new version of Samsung Theme Designer.
The new version of Samsung Theme Designer is now available for download.
Samsung Theme Designer 1.0.5 is an authoring tool for designers and
developers to create Theme content for Samsung mobile phones. Samsung
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What’s new in the latest release?
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