{"id":689,"date":"2012-08-03T11:59:50","date_gmt":"2012-08-03T11:59:50","guid":{"rendered":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/2012\/08\/03\/sac-varying-lane-width-without-targets\/"},"modified":"2012-08-03T11:59:50","modified_gmt":"2012-08-03T11:59:50","slug":"sac-varying-lane-width-without-targets","status":"publish","type":"post","link":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/2012\/08\/03\/sac-varying-lane-width-without-targets\/","title":{"rendered":"SAC &#8211; Subassembly with varying lane width without targets !"},"content":{"rendered":"<p>This post is based on an earlier&#160;<a href=\"http:\/\/www.c3dbenelux.org\/index.php\/35-Civil3D\/subassemblys\/234-verlopend-talud-met-subassembly-composer-1\" target=\"_blank\" title=\"Post (in Dutch)\">post<\/a> made by Bart De Maesschalck from DEME on the Civil 3D Benelux usergroup page.<\/p>\n<p>The challenge is to create a subassembly with the ability to apply a varying width without the need for a target alignment or polyline\/feature line.<\/p>\n<p>In this example the transition will be linear&#8230; a curved transition can be considered for another post.<\/p>\n<p>The solution lies in the possibilities that SAC (Subassembly Composer) offers. I&#039;m sure there are many ways to get this done, but this is how I did it\u2026<\/p>\n<p><span style=\"font-size: 12pt\">STEP 1: Define the variables you need <\/span><\/p>\n<ul>\n<li>Base width (Width before the transition, also used in subassembly mode)<\/li>\n<li>Extended width&#160; (Width after the transition)<\/li>\n<li>Transition length (Length of the transition zon)<\/li>\n<li>Transition start station (station to start the transition)<\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\">STEP 2: Implement this iS SAC <\/span><\/p>\n<ul>\n<li>Create the input variables we have defined in STEP 1. <\/li>\n<li>Define an internal variables to be able to calculate the real width during the transition (ActualWidth) <\/li>\n<li>Define the flows and decisions that need to be taken.<br \/>For every assembly insertion of the corridor we need to define if the current station is before, in or after the transition zone.\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"320\" src=\"http:\/\/fromthegroundup.typepad.com\/.a\/6a01127918d1ef28a401676905a1a5970b-pi\" width=\"447\" \/><\/p>\n<\/li>\n<li>Calculate the actual width during transition\n<p><img decoding=\"async\" alt=\"\" src=\"http:\/\/fromthegroundup.typepad.com\/.a\/6a01127918d1ef28a4017743e0b3bb970d-pi\" \/><\/li>\n<\/ul>\n<p>&#160;<\/p>\n<ul>\n<li>\n<div>Create the geometry for the lane<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"110\" src=\"http:\/\/fromthegroundup.typepad.com\/.a\/6a01127918d1ef28a401676905a1b2970b-pi\" width=\"526\" \/><\/p>\n<\/li>\n<\/ul>\n<p>&#160;<\/p>\n<p><span style=\"font-size: 12pt\">STEP 3: Test in AutoCAD Civil 3D <\/span><\/p>\n<p><img decoding=\"async\" alt=\"\" src=\"http:\/\/fromthegroundup.typepad.com\/.a\/6a01127918d1ef28a4017743e0b3c2970d-pi\" \/><span style=\"font-size: 12pt\"> <\/span><\/p>\n<p>&#160; &#160;<\/p>\n<p>&#160; &#160;<\/p>\n<p><span style=\"font-size: 12pt\">The Subassembly can be downloaded here: <a href=\"http:\/\/fromthegroundup.typepad.com\/files\/lanewithtransition.pkt\">Download LaneWithTransition<\/a><\/span><\/p>\n<p>&#160;Peter Ingels<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This post is based on an earlier&#160;<a href=\"http:\/\/www.c3dbenelux.org\/index.php\/35-Civil3D\/subassemblys\/234-verlopend-talud-met-subassembly-composer-1\" target=\"_blank\" title=\"Post (in Dutch)\">post<\/a> made by Bart De Maesschalck from DEME on the Civil 3D Benelux usergroup page.<\/p>\n<p>The challenge is to create a subassembly with the ability to apply a varying width without the need for a target alignment or polyline\/feature line.<\/p>\n","protected":false},"author":335,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[125,32,29],"tags":[],"class_list":["post-689","post","type-post","status-publish","format-standard","hentry","category-autodesk-2013-release","category-tips-and-tricks","category-user-groups"],"acf":[],"_links":{"self":[{"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/posts\/689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/users\/335"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/comments?post=689"}],"version-history":[{"count":0,"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/posts\/689\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/media?parent=689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/categories?post=689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.autodesk.com\/from-the-ground-up\/wp-json\/wp\/v2\/tags?post=689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}