:How are CAD's SHX fonts different from OS's True Type fonts?-knowledge base免费ppt模版下载-道格办公

SHX font is a CAD-specific font, which is defined in the form of vector, and the font is composed of segments of lines.

TrueType (TTF) font, the Chinese name Quanzhen font, is a computer font that uses a new mathematical font description technology jointly proposed by Apple and Microsoft. It uses mathematical functions to describe font outlines and shapes, and contains commands such as glyph structure, color filling, number description functions, flow condition control, raster processing control, and additional prompt control.

1. Features of SHX fonts:

AutoCAD and some CAD-compatible fonts.

A font defined in a vector format. The font is composed of lines and not filled. You can write SHP files (SHX source files, plain text files) according to the definition rules, and then compile them into SHX files in AutoCAD.

The corresponding font files are divided into three categories:

Small font: only contains English, numbers and some symbols, only 256 characters in total.
Large font: it can accommodate 65535 characters, generally used to define Chinese, Japanese, Korean and other Asian characters.
Symbol shape: Define the graphics (SHAPE) used by some tolerance labels, line types, etc.

What does the large CAD font mean? What is a shape file? Explain in detail the classification of CAD font files

What is the relationship between CAD text styles, fonts, font styles, and large fonts?

Advantages of SHX fonts:

The single-line imitation Song Dynasty font is delicate and elegant, suitable for national standard cartography. It has high editing, displaying, and printing speeds. If the drawings are complex and there are many texts, it is recommended to use SHX text.

Disadvantages of SHX fonts:

Since CAD-specific fonts are customizable font types, the file names and styles of SHX fonts provided by different companies may be different. The same file may be different fonts, and the basic size ratio of fonts may also be different. As a result, the sizes of Chinese characters and numeric letters are inconsistent, or when Chinese characters and numeric letters are written separately, the text is easily misplaced due to font replacement. SHX fonts are not recognized by other software. If you want to export to other file formats, SHX text will be recognized as graphics.

2. Features of TTF fonts:

It is a true font (TrueTypet) supported by the Windows system, defined by a cubic curve, and the boundary is smooth and clear when zoomed in.
Fonts are widely supported and have uniform definitions.
Because Chinese characters, English, numbers and some symbols are all defined in the same file, the font size is standardized.

Disadvantages of TTF fonts:

Since TTF fonts are displayed in CAD, they are composed of boundary lines and internal fills, and there are more display data. If a large number of TTF characters are used, the memory usage will increase significantly, and the display and operation speed will slow down.

Advantages of TTF fonts:

The text looks more beautiful and regular.

1. True WYSIWYG fonts. Since TrueType fonts support almost all output devices, they can be output at the resolution of the device no matter on the screen, laser printer, laser imagesetter, or color inkjet printer, so the output is very smooth.

2. Support font embedding technology. When saving, all the TrueType fonts used in the file can be embedded into the file together, so that all the fonts in the entire file can be conveniently transferred to other computers for use. Embedding technology can ensure that computers that do not have the corresponding font installed can use the original font to print in the original format.

3. Compatibility of the operating system. Both MAC and PC support TrueType fonts, and both can directly open application files in the software of the same name without replacing fonts.

Most drawings use unattractive SHX fonts instead of TTF fonts. In addition to performance reasons, this has something to do with the regulations of the industry or unit. Which font to choose is usually not determined by our personal preferences. If there are regulations, we must use the fonts according to the regulations. If there are no regulations, if you need to communicate with other people on drawings, you should also consider whether they have the fonts you use. Whether the text can be displayed normally in their CAD.

If you want to export DWG drawings to PDF and want to keep the text readable and editable, it is best to use TTF fonts. If you want to export to other file formats and keep the text editable, it is also recommended to use TTF fonts.

The above techniques are applicable to similar software such as AUTOCAD and GstarCAD.

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