ISO/TS 10303-1836:2019 Vertex colours for tessellated geometry


Application module: Vertex colours for tessellated geometry	ISO/TS 10303-1836:2019(E) © ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms

4 Information requirements
4.1 Required AM ARMs
4.2 ARM type definitions
4.3 ARM entity definition
4.4 ARM function definition
5 Module interpreted model
5.1 Mapping specification
5.2 MIM EXPRESS short listing

A MIM short names
B Information object registration
C ARM EXPRESS-G
D MIM EXPRESS-G
E Computer interpretable listings
F Change history
Bibliography
Index


         (*
ISO/TC 184/SC 4/WG 12 N9756 - ISO/TS 10303-1836 Vertex colours for tessellated geometry - EXPRESS ARM
*)



SCHEMA Vertex_colours_for_tessellated_geometry_arm;


         USE FROM
         Appearance_assignment_arm;
            -- ISO/TS 10303-1001


         USE FROM
         Tessellated_geometry_arm;
            -- ISO/TS 10303-1819


TYPE colour_type_enum =
         
         ENUMERATION
         
         OF
         

            
         (RGB8,
    RGBT8);

         END_TYPE;


TYPE tessellated_surface_item =
         
         
         SELECT

            (Tessellated_face, 
    Tessellated_shell, 
    Tessellated_solid, 
    Tessellated_surface_set);

         END_TYPE;


TYPE unsigned_8_bit_integer =
         INTEGER;
WHERE

           WR1: { 0 <= SELF <= 255 };

         END_TYPE;


ENTITY Styled_tessellated_element_with_colours

           SUBTYPE OF (Styled_element);

           SELF\Styled_element.element : tessellated_surface_item;

           colour_type : colour_type_enum;

           colour_values : LIST[1:?] OF LIST[3:4] OF unsigned_8_bit_integer;
DERIVE

           coloured_coordinate_values : Coordinates_list := get_coordinate_values(element);
WHERE

           WR1: NOT EXISTS(SELF\styled_element.appearance);

           WR2: ((colour_type = RGB8) AND (SIZEOF(QUERY(clist <* SELF.colour_values | NOT (SIZEOF(clist) = 3)))= 0)) OR
            ((colour_type = RGBT8) AND (SIZEOF(QUERY(clist <* SELF.colour_values | NOT (SIZEOF(clist) = 4)))= 0));

           WR3: SIZEOF(colour_values) = coloured_coordinate_values.npoints;

           WR4: SELF\styled_element.invisible = FALSE;

         
         END_ENTITY;


FUNCTION get_coordinate_values
 (input : tessellated_surface_item) : Coordinates_list;

RETURN(?);


         END_FUNCTION;



         END_SCHEMA;  -- Vertex_colours_for_tessellated_geometry_arm