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The SEDRIS Data Representation Model
APPENDIX A - Classes RGB Colour Control Link |
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An instance of this DRM class is a specialized <Control Link> instance used to provide the connection between an ordered aggregation of <Expression> instances and the target fields of one or more <RGB Colour> instances.
See the <CMY Colour Control Link> class for examples, as the use of that class is analogous to how this class is used.
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| SE_String | description; | 1 |
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| SE_Integer_Unsigned | red_expression_index; | 2 |
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| SE_Integer_Unsigned | green_expression_index; | 3 |
| SE_Integer_Unsigned | blue_expression_index; | 4 |
The description field specifies a text description of the purpose of the <Control Link> instance.
The red_expression_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the red field values of the rgb_data field(s) of the target <RGB Colour> instance(s). If the value is zero, the red field of those <RGB Colour> instance(s) is not controlled.
The green_expression_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the green field values of the rgb_data field(s) of the target <RGB Colour> instance(s). If the value is zero, the green field of those <RGB Colour> instance(s) is not controlled.
The blue_expression_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the blue field values of the rgb_data field(s) of the target <RGB Colour> instance(s). If the value is zero, the blue field of those <RGB Colour> instance(s) is not controlled.
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