Class Name: CMY Colour Control Link
Subclasses
This DRM class is concrete and has no subclasses.
Definition
An instance of this DRM class specifies a specialized
<Control Link> instance providing
the connection between an ordered aggregation of
<Expression> components and the target
fields of one or more <CMY Colour> instances.
Primary Page in DRM Diagram:
Secondary Pages in DRM Diagram:
Example
Consider a transmittal, produced with CMY colours, the
<Model Library> instance of which contains a
<Model> component representing a car with a
<Geometry Model> instance, the geometry of
which consists of <Polygon> instances with
<Inline Colour> components.
This car model is instanced in many places throughout the transmittal,
and the data provider wishes to vary its appearance depending on the
<Geometry Model Instance> instance. Consequently, each
<CMY Colour> instance in the <Model> instance has
a <CMY Colour Control Link> component, supplying the value
of the yellow field of the
cmy_data field
of the <CMY Colour> instance with a
<Variable> component as depicted in Figure 6.4:
Figure 4 — <DRM CMY Colour Control Link> example
FAQs
No FAQs supplied.
Constraints
Composed of (two-way) (inherited)
Component of (two-way)
Notes
Fields Notes
The description field
specifies a text description of the purpose of the
<Control Link> instance.
The cyan_expression_index field
is a one-based index into the ordered aggregation of
<Expression> components and is used to select
the specific <Expression> component (if any)
that controls the cyan field values of the
cmy_data
field(s) of the target <CMY Colour>
instance(s). If the value is zero, the
cyan field
of those <CMY Colour> instance(s) is not controlled.
The magenta_expression_index field
is a one-based index into the ordered aggregation of
<Expression> components and is used to select
the specific <Expression> component (if any) that
controls the magenta field
values of the cmy_data
field(s) of the target <CMY Colour>
instance(s). If the value is zero, the
magenta field
of those <CMY Colour> instance(s) is not controlled.
The yellow_expression_index field
is a one-based index into the ordered aggregation of
<Expression> components and is used to select
the specific <Expression> component (if any) that
controls the yellow field
values of the cmy_data
field(s) of the target <CMY Colour>
instance(s). If the value is zero, the
yellow field
of those <CMY Colour> instance(s) is not controlled.
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