Revision: 57067
http://sourceforge.net/p/brlcad/code/57067
Author: starseeker
Date: 2013-08-22 15:59:26 +0000 (Thu, 22 Aug 2013)
Log Message:
-----------
Make a stab at adding at least some form of shape definition to the step output.
Modified Paths:
--------------
brlcad/trunk/src/conv/step/g-step/ON_Brep.cpp
Modified: brlcad/trunk/src/conv/step/g-step/ON_Brep.cpp
===================================================================
--- brlcad/trunk/src/conv/step/g-step/ON_Brep.cpp 2013-08-22 15:21:24 UTC
(rev 57066)
+++ brlcad/trunk/src/conv/step/g-step/ON_Brep.cpp 2013-08-22 15:59:26 UTC
(rev 57067)
@@ -426,7 +426,13 @@
return complex_entity;
}
-/* Defining a shape, we need:
+/* Defining a shape is necessary for at least some systems, but how this is
done does not appear
+ * to be at all uniform between the outputs from various systems. The
following hierarchies have
+ * been seen so far - we'll initially follow Rhino's lead since we're using
openNURBs representations,
+ * but different importers may prove to need other styles and it's something
to bear in mind.
+ *
+ * #1:
+ *
* SHAPE_DEFINITION_REPRESENTATION (SdaiShape_definition_representation ->
SdaiProperty_definition_representation)
* PRODUCT_DEFINITION_SHAPE (SdaiProduct_definition_shape ->
SdaiProperty_definition)
* PRODUCT_DEFINITION (SdaiProduct_definition)
@@ -436,18 +442,76 @@
* APPLICATION_CONTEXT (SdaiApplication_context)
* DESIGN_CONTEXT (SdaiDesign_context -> SdaiProduct_definition_context ->
SdaiApplication_context_element)
*
- * Also of possible interest here - APPLICATION_PROTOCOL_DEFINITION
*
- * Need to figure out which of these are global and which are specific
- * to the particular shape definition. Some clearly are global...
+ * #2
*
+ * SHAPE_REPRESENTATION_RELATIONSHIP (SdaiShape_representation_relationship ->
SdaiRepresentation_relationship)
+ * SHAPE_REPRESENTATION (SdaiShape_representation -> SdaiRepresentation
+ * AXIS2_PLACEMENT_3D (SdaiAxis2_placement_3d -> SdaiPlacement)
+ * DIRECTION (two of these) (SdaiDirection ->
SdaiGeometric_representation_item -> SdaiRepresentation_item)
+ * CARTESIAN_POINT (SdaiCartesian_point)
+ *
+ *
*/
STEPentity *
-Add_Shape_Definition(Registry *registry, InstMgr *instance_list)
+Add_Shape_Definition(Registry *registry, InstMgr *instance_list,
SdaiRepresentation_context *context, SdaiRepresentation *manifold_shape)
{
- STEPentity *shape_def_rep =
registry->ObjCreate("SHAPE_DEFINITION_REPRESENTATION");
- instance_list->Append(shape_def_rep, completeSE);
- return shape_def_rep;
+ STEPentity *ret_entity =
registry->ObjCreate("SHAPE_REPRESENTATION_RELATIONSHIP");
+ instance_list->Append(ret_entity, completeSE);
+ SdaiShape_representation_relationship *shape_rep_rel =
(SdaiShape_representation_relationship *) ret_entity;
+ shape_rep_rel->name_("''");
+ shape_rep_rel->description_("''");
+ SdaiShape_representation *shape_rep = (SdaiShape_representation
*)registry->ObjCreate("SHAPE_REPRESENTATION");
+ instance_list->Append((STEPentity *)shape_rep, completeSE);
+ shape_rep_rel->rep_1_((SdaiRepresentation *)shape_rep);
+ shape_rep_rel->rep_2_(manifold_shape);
+ shape_rep->name_("''");
+ shape_rep->context_of_items_(context);
+ EntityAggregate *axis_items = shape_rep->items_();
+ SdaiAxis2_placement_3d *axis3d = (SdaiAxis2_placement_3d
*)registry->ObjCreate("AXIS2_PLACEMENT_3D");
+ instance_list->Append((STEPentity *)axis3d, completeSE);
+ axis3d->name_("''");
+ SdaiCartesian_point *origin= (SdaiCartesian_point
*)registry->ObjCreate("CARTESIAN_POINT");
+ instance_list->Append((STEPentity *)origin, completeSE);
+ RealNode *xnode = new RealNode();
+ xnode->value = 0.0;
+ RealNode *ynode= new RealNode();
+ ynode->value = 0.0;
+ RealNode *znode= new RealNode();
+ znode->value = 0.0;
+ origin->coordinates_()->AddNode(xnode);
+ origin->coordinates_()->AddNode(ynode);
+ origin->coordinates_()->AddNode(znode);
+ origin->name_("''");
+ axis3d->location_(origin);
+ SdaiDirection *axis = (SdaiDirection *)registry->ObjCreate("DIRECTION");
+ instance_list->Append((STEPentity *)axis, completeSE);
+ RealNode *axis_xnode = new RealNode();
+ axis_xnode->value = 0.0;
+ RealNode *axis_ynode= new RealNode();
+ axis_ynode->value = 0.0;
+ RealNode *axis_znode= new RealNode();
+ axis_znode->value = 1.0;
+ axis->direction_ratios_()->AddNode(axis_xnode);
+ axis->direction_ratios_()->AddNode(axis_ynode);
+ axis->direction_ratios_()->AddNode(axis_znode);
+ axis->name_("''");
+ axis3d->axis_(axis);
+ SdaiDirection *ref_dir = (SdaiDirection *)registry->ObjCreate("DIRECTION");
+ instance_list->Append((STEPentity *)ref_dir, completeSE);
+ RealNode *ref_dir_xnode = new RealNode();
+ ref_dir_xnode->value = 1.0;
+ RealNode *ref_dir_ynode= new RealNode();
+ ref_dir_ynode->value = 0.0;
+ RealNode *ref_dir_znode= new RealNode();
+ ref_dir_znode->value = 0.0;
+ ref_dir->direction_ratios_()->AddNode(ref_dir_xnode);
+ ref_dir->direction_ratios_()->AddNode(ref_dir_ynode);
+ ref_dir->direction_ratios_()->AddNode(ref_dir_znode);
+ ref_dir->name_("''");
+ axis3d->ref_direction_(ref_dir);
+ axis_items->AddNode(new EntityNode((SDAI_Application_instance *)axis3d));
+ return ret_entity;
}
@@ -776,6 +840,8 @@
advanced_brep->context_of_items_((SdaiRepresentation_context *) context);
+ (void *)Add_Shape_Definition(registry, instance_list,
(SdaiRepresentation_context *)context, (SdaiRepresentation *)advanced_brep);
+
return true;
}
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