The SEDRIS Data Representation Model
APPENDIX A - Classes Texture Coordinate Table |
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A <Texture Coordinate Table> is a part of a hierarchical collection of <Texture Coordinate> instances that can be referenced by index. It is a specialization of the <Hierarchical Table> class and is used in conjunction with the texture_coordinate_index field of the <Vertex With Component Indices> class. See the <Hierarchical Table> and <Vertex With Component Indices>
Consider a <Union Of Primitive Geometry> containing multiple quadrilateral <Polygon> instances that use the same Texture Coordinate instances for their <Vertex With Component Indices> components. Each <Polygon> has 1 <Image Mapping Function> for the OTW presentation domain, where the <Presentation Domain> is inherited from the <Union Of Primitive Geometry>.
<Union Of Primitive Geometry> <> ----------------------------------------------- | | <Polygon> .... <Presentation Domain> <Texture Coordinate Table> <> SE_PRES_DOM_OTW <> | | | | |_ <Vertex w. C.I.> |- <Texture Coordinate> | texture_coordinate_index = 1 | | | |_ <Vertex w. C.I.> |- <Texture Coordinate> | texture_coordinate_index = 2 | | | |_ <Vertex w. C.I.> |- <Texture Coordinate> | texture_coordinate_index = 3 | | | |_ <Vertex w. C.I.> |- <Texture Coordinate> | texture_coordinate_index = 4 | |- <Image Mapping Function>
Consider a <Union Of Primitive Geometry> containing multiple triangular <Polygon> instances that use the same Texture Coordinate instances for their <Vertex With Component Indices> components. Each <Polygon> has 1 <Image Mapping Function> for the OTW presentation domain and another for the thermal domain.
Each <Vertex With Component Indices> references a <Texture Coordinate Set> within the <Texture Coordinate Table> of the <Union Of Primitive Geometry>. Each <Texture Coordinate Set> contains 2 <Texture Coordinates>, one for use with OTW and the other for use with thermal.
See also <Vertex With Component Indices>.
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SE_Integer_Positive | start_index; |
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