CAD Forum discussion (EN) : Newbie

CAD Forum discussion (EN) : Newbie - STEP File Format https://www.cadforum.cz/forum_en/ Wed, 13 May 2026 07:17:48 +0000 Wed, 19 Sep 2007 18:08:23 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://www.cadforum.cz/forum_en/RSS_post_feed.asp?TID=120 <![CDATA[CAD Forum discussion (EN)]]> https://www.cadforum.cz/forum_en/forum_images/web_wiz_forums.png https://www.cadforum.cz/forum_en/ <![CDATA[Newbie - STEP File Format : Hello all, I am a newbie with...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=120&PID=271&title=newbie-step-file-format#271 Author: dinaharchery
Subject: 120
Posted: 19.Sep.2007 at 18:08

Hello all,

I am a newbie with a background in computer science but little if any engineering knowledge but am eager to learn. I am currently writing a Java program to visualize STEP files as an exercise. The Java part I get, the STEP File format, however, is another issue.

I am up to the ADVANCED_BREP_SHAPE_REPRESENTATION Entities and am having some issues regarding the transformations of the geometries. Within the ADVANCED_BREP_SHAPE_REPRESENTATION Entity there is a MANIFOLD_SOLID_BREP (which I can render as a series of polygons) however, there is also an AXIS2_PLACEMENT_3D Entity (or more than 1). How does the AXIS2_PLACEMENT_3D Entity relate to the MANIFOLD_SOLID_BREP?

Any help/hints (pseudo-code would be great) would be much appreciated.

Thank you.

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