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3 `3 L) X5 t r关于JT文件的详细语法定义,这个太全了
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$ E b* }5 Y' d i, qSome of the highlights of the JT format include: & e' k5 V& s) g) b" }8 _" @ _
Built-in support for assemblies, sub-assemblies and part constructs 1 V0 U+ l! i# L+ m0 u; |
Flexible partitioning scheme, supporting single or multiple files
+ o- h5 t4 H. K6 ~/ j! `+ h B-Rep, including integrated support for industry standard Parasolid® (XT) format % O4 a$ m5 [. w; @. F1 T
Product Manufacturing Information in support of paperless manufacturing initiatives
" k8 h/ @" t5 Z. w0 h6 d Precise and imprecise wireframe 6 Z" `2 K# t1 `& f, t# \
Discrete purpose-built Levels of Detail
9 g8 w4 z, {7 I0 b7 U. S3 f4 d+ ` Triangle sets, Polygon sets, Point sets, Line sets and Implicit Primitive sets (cylinder, cone, sphere, eTC…)
; U$ a, I7 w, b; A9 j: s& A Full array of visual attributes: Materials, Textures, Lights, Shaders
) {) ^% ~/ \6 N' p: B Hierarchical Bounding Box and Bounding Spheres 8 \' S9 {4 l" A' c
Advanced data compression that allows producers of JT files to fine tune the tradeoff between compression ratio
' N" {4 z4 B) ?and fidelity of the data. $ K9 E! b1 T! q
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