我想要做的事情

2006-12-05

关键字: 希望

我的專長與過去的工作經驗是
AutoCAD 2D/3D 畫圖
AutoLISP 程式設計
C語言程式設計
數值分析
資料結構
電腦圖學

古人說：虎死留皮，人死留名。
我不想留皮和名。

可是，我很想把我的一些經驗與大家分享，
所以，請大家允許我貼一些很簡單的，很入門的，
很另類的，很古老的一些東西。

想看得，就隨便看看。
不想看得，就忽略過去。

說明白一點，我在台灣地區直接教過的學生超過三千，
成名的，稍有成就的，不只七十二
我希望有機會回饋祖國。

威盛芯，中國情。

08:04
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jsjw2 2007-03-20

so you need another 3 years to come back to China?

Hope you enjoy your trip at that time.

sjgau 2006-12-22

謝謝！

redfeather 2006-12-21

aha，生日快乐

sjgau 2006-12-21

等有機會，一定。
要去爬長城，當好漢。
希望，到時候還爬得動。
我今天 52歲。

redfeather 2006-12-21

来北京玩吧

SpringArt 2006-12-06

不错，收藏

sjgau 2006-12-06

http://harryxu.cn/blog/?p=49

2006年 11月份编程语言使用率世界排行榜

01. Java
02. C
03. C++
04. VB
05. PHP
06. Perl
07. Python
08. C#
09. JavaScript
10. Delphi
11. SAS
12. Ruby
13. PL/SQL
14. D
15. ABAP
16. Lisp/Scheme
17. COBOL
18. Ada
19. Pascal
20. VFP

sjgau 2006-12-06

這裡有常用的各種電腦語言的比較，蠻不錯的參考資料。

http://en.wikipedia.org/wiki/Comparison_of_programming_languages

sjgau 2006-12-06

我目前使用最多的電腦語言 C

http://en.wikipedia.org/wiki/C_programming_language

C is a general-purpose, procedural, imperative computer programming language developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system.[1] It has since spread to many other operating systems, and is now one of the most widely used programming languages. C has also greatly influenced many other popular languages,[2] especially C++, which was originally designed as an enhancement to C. It is the most commonly used programming language for writing system software,[3][4] though it is also widely used for writing applications.

sjgau 2006-12-06

我所學習的第二套電腦語言，BASIC

http://en.wikipedia.org/wiki/BASIC_programming_language

In computer programming, BASIC (an acronym for Beginner's All-purpose Symbolic Instruction Code[1]) refers to a family of high-level programming languages. It was originally designed in 1963, by John George Kemeny and Thomas Eugene Kurtz at Dartmouth College, to provide access for non-science students to computers. At the time, nearly all computer use required writing custom software, which was something only scientists and mathematicians tended to do. The language (in one variant or another) became widespread on home microcomputers in the 1980s, and remains popular to this day in a handful of heavily evolved dialects.

sjgau 2006-12-06

這是我的初戀，我所學習過的第一套電腦語言，
大概是 1973年的事情，33年前的事情囉，我老了

http://en.wikipedia.org/wiki/Fortran

Fortran (previously FORTRAN[1]) is a general-purpose[2], procedural,[3] imperative programming language that is especially suited to numeric computation and scientific computing. Originally developed by IBM in the 1950s for scientific and engineering applications, Fortran came to dominate this area of programming early on and has been in continual use in computationally intensive areas such as climate modeling[1], computational fluid dynamics (CFD), computational physics, and computational chemistry for half a century.

sjgau 2006-12-06

我最喜歡的電腦語言：Pascal
結構嚴謹，不容易出錯。很容易 debug

http://en.wikipedia.org/wiki/Pascal_%28programming_language%29

Pascal is an imperative computer programming language, developed in 1970 by Niklaus Wirth as a language particularly suitable for structured programming. A derivative known as Object Pascal was designed for object oriented programming.

sjgau 2006-12-06

我是先學 LISP, 然後才碰到 AutoLISP`.

後來摸大型電腦的 PDMS, 上面的 macro 也是採用類似
LISP 的語法。

http://en.wikipedia.org/wiki/Autolisp

AutoLISP is a dialect of Lisp programming language built specifically for use with the full version of AutoCAD and its derivatives like Autodesk Map 3D and Autodesk Architectural Desktop. Neither the application programming interface nor the interpreter to execute AutoLISP code are included in the AutoCAD LT product line, unless you buy add ons like "LT-Extender".

sjgau 2006-12-06

Lisp 也是一個影響我很深遠的一種電腦語言。

http://en.wikipedia.org/wiki/Lisp_programming_language

Lisp is a family of computer programming languages with a long history and a distinctive fully-parenthesized syntax. Originally specified in 1958, Lisp is the second-oldest high-level programming language in widespread use today; only Fortran is older. Like Fortran, Lisp has changed a great deal since its early days, and a number of dialects have existed over its history. Today, the most widely-known general-purpose Lisp dialects are Common Lisp and Scheme.

sjgau 2006-12-05

http://en.wikipedia.org/wiki/Logo_programming_language

The Logo programming language is a functional programming language. It is an easier to read adaptation and dialect of the Lisp programming language; some have called it Lisp without the parentheses. It was created for educational use, more so for constructivist teaching, by Danny Bobrow, Wally Feurzeig and Seymour Papert. Today, it is known mainly for its "turtle graphics", but it also has significant facilities for handling lists, files, and I/O. Logo can be used to teach most computer science concepts, as UC Berkeley Lecturer Brian Harvey does in his "Computer Science Logo Style" trilogy.

sjgau 2006-12-05

補充一個重點，
LOGO 海龜畫圖的精神，
也是我解題的依個重要依據。
有很多困難的問題，使用這個方法去想像，
就變成很容易了。

改天，我再來解釋，什麼是 LOGO 海龜畫圖

sjgau 2006-12-05

OK!
我先把一些重點，提示一下

程式設計的效率問題，需要計時 routine
time1(), time2()

測試資料的產生，需要自己寫亂數的 routine
rnd1(), rnd2(), irnd(), init_rnd()

誤差的問題處理，需要 rel_diff(), abs_diff()

三次方的木條曲線，曲線擬合

以上的問題都完全明瞭，大概就具有一定的
解決問題能力

sjgau 2006-12-05

謝謝光臨！
我會慢慢的把我的經驗整理出來，
把他們 po上來。

Eastsun 2006-12-05

看到了楼主在我的blog上的留言,很高兴能有你这样的图形方面的前辈愿意把自己积累的经验拿出来让大家一起分享.
希望以后能在你的blog上看到一些2D/3D方面的好文章.
也希望看到更多对JAVA 2D/3D感兴趣的人能一起互相交流,讨论.