{"id":582245,"date":"2024-11-05T20:26:12","date_gmt":"2024-11-05T20:26:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-10303-422003\/"},"modified":"2024-11-05T20:26:12","modified_gmt":"2024-11-05T20:26:12","slug":"iso-10303-422003","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-10303-422003\/","title":{"rendered":"ISO 10303-42:2003"},"content":{"rendered":"<p>ISO 10303-42:2003 specifies the resource constructs for the explicit geometric and topological representation of the shape of a product. The scope is determined by the requirements for the explicit representation of an ideal product model; tolerances and implicit forms of representation in terms of features are out of scope. The geometry in clause 4 and the topology in clause 5 are available for use independently and are also extensively used by the various forms of geometric shape model in clause 6.<\/p>\n<p>In addition, ISO 10303-42:2003 specifies specialisations of the concepts of representation where the elements of representation are geometric.<\/p>\n<p>The following are within the scope of the geometry schema:<\/p>\n<ul>\n<li>definition of points, vectors, parametric curves and parametric surfaces;<\/li>\n<li>definition of finite volumes with internal parametrisation;<\/li>\n<li>definition of transformation operators;<\/li>\n<li>points defined directly by their coordinate values or in terms of the parameters of an existing curve or surface;<\/li>\n<li>definition of conic curves and elementary surfaces;<\/li>\n<li>definition of curves defined on a parametric surface;<\/li>\n<li>definition of general parametric spline curves, surfaces and volumes;<\/li>\n<li>definition of point, curve and surface replicas;<\/li>\n<li>definition of offset curves and surfaces;<\/li>\n<li>definition of intersection curves.<\/li>\n<\/ul>\n<p>The following are outside the scope of ISO 10303-42:2003:<\/p>\n<ul>\n<li>all other forms of procedurally defined curves and surfaces;<\/li>\n<li>curves and surfaces which do not have a parametric form of representation;<\/li>\n<li>any form of explicit representation of a ruled surface.<\/li>\n<\/ul>\n<p>NOTE For a ruled surface the geometry is critically dependent upon the parametrisation of the boundary curves and the method of associating pairs of points on the two curves. A ruled surface with B-spline boundary curves can however be exactly represented by the B-spline surface entity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Industrial automation systems and integration \u2014 Product data representation and exchange \u2014 Part 42: Integrated generic resource: Geometric and topological representation<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>2003-04<\/td>\n<td>348<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":582259,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[385,2634],"product_tag":[],"class_list":{"0":"post-582245","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-040-40","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/582245","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/582259"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=582245"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=582245"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=582245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}