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Application module:
General surface appearance |
ISO/TS 10303-1007:2010-07(E)
© ISO
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This clause specifies the information requirements for the
General surface appearance
application module. The information requirements are specified as the
Application Reference Model (ARM) of this application module.
NOTE 1 A graphical representation of the information
requirements is given in
Annex C.
NOTE 2 The mapping specification is specified in
5.1. It shows how
the information requirements are met by using common resources and
constructs defined or imported in the MIM schema of this application
module.
This clause defines the information requirements to which implementations shall
conform using the EXPRESS language as defined in ISO 10303-11.
The following begins the
General_surface_appearance_arm
schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA General_surface_appearance_arm;
(*
The following EXPRESS interface statement specifies the elements
imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Curve_appearance_arm;
--
ISO/TS 10303-1003
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| Curve_appearance_arm |
ISO/TS 10303-1003 |
NOTE 2
See Annex C,
Figures
C.1and C.2
for a graphical representation of this schema.
This subclause specifies the ARM type
for this application module. The ARM type and
definition is specified below.
A surface_side lists sides of a surface.
EXPRESS specification:
*)
TYPE
surface_side =
ENUMERATION
OF
(positive,
negative,
both);
END_TYPE;
(*
Enumerated item definitions:
positive:
the side of a surface is positive.
negative:
the side of a surface is negative.
both:
the side of a surface is both.
This subclause specifies the ARM entities for this
module. Each ARM application entity is an atomic element that
embodies a unique application concept and contains attributes
specifying the data elements of the entity. The ARM
entities and definitions are specified below.
A Boundary_curve_appearance is a type of Surface_related_curve_appearance. It is the curve style that is applied to the boundary curves of a surface.
EXPRESS specification:
*)
ENTITY Boundary_curve_appearance
SUBTYPE OF (Surface_related_curve_appearance);
END_ENTITY;
(*
A Control_grid_appearance is a type of Surface_related_curve_appearance. It is the curve style that is applied to the mesh of control points which are used for the definition of surfaces.
EXPRESS specification:
*)
ENTITY Control_grid_appearance
SUBTYPE OF (Surface_related_curve_appearance);
END_ENTITY;
(*
A Parameter_line_appearance is a type of Surface_related_curve_appearance. It is the curve style that is applied to the iso-parameter lines on a surface.
EXPRESS specification:
*)
ENTITY Parameter_line_appearance
SUBTYPE OF (Surface_related_curve_appearance);
number_of_u_curves : INTEGER;
number_of_v_curves : INTEGER;
END_ENTITY;
(*
Attribute definitions:
number_of_u_curves:
the number of iso-parameter lines to be presented in the u direction.
number_of_v_curves:
the number of iso-parameter lines to be presented in the v direction.
A Segmentation_curve_appearance is a type of Surface_related_curve_appearance. It is the curve style that is applied to the curves on the segment borders of a surface
EXPRESS specification:
*)
ENTITY Segmentation_curve_appearance
SUBTYPE OF (Surface_related_curve_appearance);
END_ENTITY;
(*
A Silhouette_curve_appearance is a type of Surface_related_curve_appearance. It is the curve style that is applied to the silhouette curves of a surface.
EXPRESS specification:
*)
ENTITY Silhouette_curve_appearance
SUBTYPE OF (Surface_related_curve_appearance);
END_ENTITY;
(*
A Surface_appearance is the definition of the visual appearance of a surface.
EXPRESS specification:
*)
ENTITY Surface_appearance;
side : surface_side;
styles : SET[1:7] OF Surface_appearance_element;
END_ENTITY;
(*
Attribute definitions:
side:
the side of a surface to which the styles are applied.
styles:
the curve styles used for the wireframe-like surface presentation.
A Surface_appearance_element is either a
Surface_related_curve_appearance
or a
Surface_colour.
EXPRESS specification:
*)
ENTITY Surface_appearance_element
ABSTRACT SUPERTYPE
OF (ONEOF (Surface_related_curve_appearance,
Surface_colour));
END_ENTITY;
(*
A Surface_colour is a type of is a type of
Surface_appearance_element
that is the colour for presentation of a surface that are not shaded.
EXPRESS specification:
*)
ENTITY Surface_colour
SUBTYPE OF (Surface_appearance_element);
assigned_colour : Colour;
END_ENTITY;
(*
Attribute definitions:
assigned_colour:
the colour used for non-shading surface presentation.
A Surface_related_curve_appearance is a type of
Surface_appearance_element.
A Surface_related_curve_appearance is a generalization of the styles assigned to curves for wireframe-like surface presentation.
A Surface_related_curve_appearance is either a
Boundary_curve_appearance
or a
Control_grid_appearance
or a
Parameter_line_appearance
or a
Segmentation_curve_appearance
or a
Silhouette_curve_appearance.
EXPRESS specification:
*)
ENTITY Surface_related_curve_appearance
ABSTRACT SUPERTYPE
OF (ONEOF (Boundary_curve_appearance,
Control_grid_appearance,
Parameter_line_appearance,
Segmentation_curve_appearance,
Silhouette_curve_appearance))
SUBTYPE OF (Surface_appearance_element);
style : Curve_appearance;
END_ENTITY;
(*
Attribute definitions:
style:
the curve appearance associated with each curve type in the context of wireframe-like surface presentation.
*)
END_SCHEMA; -- General_surface_appearance_arm
(*
© ISO 2010 — All rights reserved
