ISO 10303-214:2010(E)

Figure — Arrowleft Figure — Clause 4 Figure — Arrowright

4.2.334 Model_image

A Model_image is a mechanism to generate a two-dimensional picture from two-dimensional or three-dimensional geometric or annotation elements. The mechanism is defined by clipping, scaling, and projecting information.

The data associated with a Model_image are the following:

4.2.334.1 clipping

The clipping specifies the mathematical information necessary to define a two-dimensional area (clipping box) or a three-dimensional volume (clipping volume) that encloses all viewable geometric or annotation elements of a Styled_model or of an External_model. Only those elements, or portions of elements, that fall within this two-dimensional area or three-dimensional volume shall be displayed.

The clipping need not be specified for a particular Model_image.

4.2.334.2 is_displaying

The is_displaying specifies the model that contains the information to be processed for display.

See model_image to external_model and model_image to styled_model for the application assertions.

There shall be exactly one object that the Model_image is_displaying.

4.2.334.3 is_presented_in

The is_presented_in specifies the set of View objects in which the picture defined by the Model_image is presented.

See model_image to view for the application assertion.

4.2.334.4 name

The name specifies the word or group of words by which the Model_image is referred to.

See model_image to multi_language_string for the application assertion.

The name need not be specified for a particular Model_image.

If present, there shall be exactly one object that defines the name for a Model_image.

4.2.334.5 scale

The scale specifies the ratio between the size of the elements as defined in the shape model and the size of the elements as presented in the view. The default value for scale is 1.0.

4.2.334.6 view_projection

The view_projection specifies the type of projection.

The following values shall be used:

4.2.334.7 view_volume_placement

The view_volume_placement specifies the coordinate space in which the viewing parameters are defined.



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