IfcTextStyleWithBoxCharacteristics
Definition
from IAI: The text style with
box characteristics allows the presentation of annotated text by
specifying the characteristics of the character boxes of the text and
the spacing between the character boxes.
NOTE The IfcTextStyleWithBoxCharacteristics
is an entity that had been adopted from ISO 10303, Industrial
automation systems and integration—Product data
representation and exchange, Part 46: Integrated generic resources:
Visual presentation.
The IfcTextStyleWithBoxCharacteristics
is mainly used to
provide some compatibilty with ISO10303. Its usage is restricted to
monespace text fonts (having uniform character boxes) and simple vector
based text
fonts. For true text fonts however the use of IfcTextStyleTextModel
is required.
 |
 |
| Illustration
from ISO 10303-46, page 91 |
Illustration
from IAI |
NOTE
Corresponding
STEP name: text_style_with_box_characteristics. Please refer to ISO/IS
10303-46:1994, p. 123 for the final definition of the formal standard.
The four optional attributes BoxHeight,
BoxWidth, BoxSlantAngle, BoxRotateAngle
are included directly at the entity, and are not handled through the
box_characteristic_select selecting box_height, box_width,
box_slant_angle, box_rotate_angle, each being defined types.
The CharacterSpacing
attribute has been added from ISO/IS
10303-46:1994
entity text_style_with_spacing.
HISTORY New entity in
Release
IFC2x
Edition 2.
IFC2x
Edition 3 CHANGE The
attribute item CharacterSpacing
has
been added.
EXPRESS specification:
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| ENTITY IfcTextStyleWithBoxCharacteristics;
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Attribute definitions:
| BoxHeight
|
:
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It is the height scaling factor in the definition of a character glyph.
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| BoxWidth
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:
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It is the width scaling factor in the definition of a character glyph.
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| BoxSlantAngle
|
:
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It indicated that the box of a character glyph shall be represented as a parallelogramm, with the angle
being between the character up line and an axis perpendicular to the character base line.
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| BoxRotateAngle
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:
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It indicated that the box of a character glyph shall be presented at an angle to the base line of a text
string within which the glyph occurs, the angle being that between the base line of the glyph and an
axis perpendicular to the baseline of the text string.
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| CharacterSpacing
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:
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The distance between the character boxes of adjacent characters.
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Inheritance graph
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| ENTITY IfcTextStyleWithBoxCharacteristics;
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