As a CAD veteran, from ACAD2.6 all the way to ACAD2007, I have been expecting domestic CAD platform software to appear. In 2001, Zhongwang Company launched its own Zhongwang CAD platform software, which was inspired by the great success of Zhongwang. After 2004, several other related companies in China also launched similar products. The domestic cad software also looked at CAD software from Zhongwang. A solo show has become a situation of several contends. This is a good thing for domestic customers.
After repeatedly using several domestic CAD platforms, I gradually realized that even if the technical routes are similar, the five-year software and the two-year software are different in terms of release time theory. Due to my admiration for Zhongwang CAD software, in the following articles, the names of other domestic cad companies are not mentioned, and only "other domestic cad software" is replaced. I will analyze it from the four most common features. This article is the third in a series that focuses on some tests and references.
CAD drawing can subvert the traditional manual drawing mode, and text is convenient for input and editing, and good display effect is one of the important reasons. The use of text is one of the most commonly used functions in CAD drawings. Almost all graphics contain some text, or annotations, or annotate objects in the diagram. ACAD has systematically improved the performance of text objects in almost every version from low to high versions, showing the importance of text performance to CAD users. Today's CAD software (including the domestic CAD platform) basically makes it easy for users to insert text and replace text styles, but if you compare them in detail, different software displays have different effects, which are the same as the release-level version. A careful comparison:
1. Modern design tends to focus on interaction and collaboration. For example, drawings of a construction project may involve multiple collaborations and interactions such as survey, design, audit, construction, and supervision. Can the drawings fully express information relationships during the interaction process? The efficiency and smoothness of the interaction. In particular, the text information in the drawings can be displayed normally, and the display effect is very important. To this end, the author randomly selected a part of the drawings (17) submitted in the previous project, and compared the display effect of the text with each CAD software, the results are as follows:
Description:
1. For commonly used shape files and truetype fonts, all software can be recognized normally. For fonts that are not commonly used, font replacement can be automatically performed according to the user's definition. In addition, fonts that cannot be found without defining a replacement rule can be popped up with a text style replacement dialog box for prompt replacement.
2. "Other domestic cad software" is somewhat embarrassing in the control of text movements and even the loss of text objects. AutoCAD2006 and Zhongwang CAD2006 showed good recognition and compatibility, and there was no text movement or loss.
3. The domestic software has made some optimizations for the text display efficiency when zooming out, and provides textdegrade parameters to control whether the text object is displayed in the box when it is reduced to a certain program. AutoCAD 2006 does not have this option, which is related to its consistently good efficiency control.
4. There are only 17 drawings in comparison, which are not comprehensive enough to explain the problem absolutely for reference.
For the overall display effect (including zooming and zooming), AutoCAD has the best display effect, and the medium-looking CAD is slightly less. The "other domestic cad software" is more general (occasionally wrong). The specific screenshots are as follows:
AutoCAD2006 displays the text on old drawings:
Zhongwang CAD2006 shows the effect on the text of the old drawings:
"Other domestic cad software" shows the effect on the text of the old drawings:
2. When setting the text style, you can preview any input word in the current font file. This function can help the user to quickly find the text style you need, thus avoiding unnecessary duplication of work. Here I use the most commonly used national standard font for verification.
AutoCAD2006 font style preview:
Zhongwang CAD2006 font style preview situation:
"Other domestic cad software" font style preview:
It can be seen that both AutoCAD2006 and Zhongwang CAD2006 can use "gbcbig.shx" for normal preview of the words "text test", while "other domestic cad software" can not be previewed normally.
3, the display effect of the text is not limited to the CAD software, the display effect in the interaction with other software can better reflect the perfection of a software and other application interface, such as our commonly used word processing program WORD, EXCEL and so on. In the OLE ( Object Linking and Embedding) object, how do each CAD perform in terms of text? The author separately pastes some simple multi-line text into EXCEL2003, and the display effect is as follows:
AutoCAD2006 text paste to EXCEL2003 display effect:
Paste CAD2006 text paste to EXCEL2003 display effect:
"Other domestic cad software" text paste to EXCEL2003 display effect:
It can be seen that in the OLE effect, AutoCAD2006 has the best display effect, and the effect of Zhongwang CAD2006 is also very good, which can be clearly identified, but the text is slightly thicker than ACAD. The OLE of "other domestic cad software" has an error and cannot be identified.
As one of the most commonly used functions, the text relates to the various processes of drawing, and the importance of the overall display effect of the text is self-evident. The author noticed that in the test process, Zhongwang only had room for improvement in the display of details compared to ACAD, while the other domestic cad platforms had a large overall effect.
It can be seen from the above comparison that in the text display effect that users value very much, Zhongwang CAD has reached a practical level and can display well in various complicated environments. The depth of development of other domestic software is obviously insufficient. There is "this function, but there is still a long way to go before it is practical.
In fact, it is very difficult for domestic CAD platform to challenge autocad's hegemony in China. The author is very optimistic about the domestic CAD platform software. To seriously compare the differences of domestic platforms, I hope that the domestic cad platform enterprises will progress faster. After all, it is medium. Looking at a market alone is not the best for customers, but domestic CAD platform companies must calm down, let go of all impetuousness, increase development efforts, and develop products that truly satisfy customers, rather than just making an immature The product is rushing to the market and going to the concept of speculation.
I wish Zhongwang CAD software to go well! I wish the domestic CAD platform software to go well!
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