T-FLEX Parametric CAD. Fundamentals. 2D Design

Dimensions
The option “By Source Lines” can be used, for example, for dimensioning on the lines of the associative
copies (including the drawing views) without taking into account the scale of the copy.
None. The dimension value string does not show on the dimension.
From Lines. This option is available for dimensions created manually on the 2D projection lines (or their
associative copies) corresponding to the thread (special 3D operation created with the help of the
command “3AT: Create Thread”). Also, this option is available for 3D dimensions drawn on the
threaded surfaces of the 3D model. When selecting this option, the text displayed on the dimension
originates from the thread parameters (that is, the thread notation is displayed instead of the dimension
value string).
From 3D parent. This option is available only for dimensions created manually on the 2D projection lines
(or their associative copies) and on condition that 3D dimensions are drawn on the corresponding to those
lines faces, edges and vertexes of the original 3D model. Upon selection of this option, the text and
parameters of the dimension will be inherited from the parameters of the 3D dimension.
The unaccessible for editing field found below the group “Value” is
informative. It shows how the dimension has been created and how its value
and parameters have been determined:
− “On Drawing” – standard 2D dimension drawn by nodes or by lines of
a 2D drawing. The value of the dimension is evaluated by the geometry of the drawing or specified
manually;
− “On Drawing ” – standard 2D dimension drawn by nodes or by lines of a 2D drawing. The value of
the dimension is evaluated by the geometry of the drawing or specified manually;
− “On Copy: On Drawing” – dimension is drawn on the elements of the associative copy of the nodes
and the lines of a 2D drawing. Similar text string also appears if the dimension is drawn on the
elements of the associative copy of the 2D projection lines, and for this dimension the field “Value”
has an arbitrary value except “By Source Lines” (that is, the value of the dimension is determined
either by the elements of the copy itself or specified manually);
− “On Copy: On Projection” – dimension is drawn on the elements of the associative copy of the 2D
projection lines and for this dimension the field “Value” has the value “By Source Lines”. In this case,
the value of the dimension is evaluated by original objects of the copy, i.e. by the 2D projection lines;
− “On Projection” – dimension is drawn on the 2D projection lines. If on the faces of a 3D model
corresponding to given projection lines there is a 3D dimension, and for the 2D dimension the field
“Value” has the value “From 3D parent”, then “(*3D)” is added to the information string;
− “On Operation” – this text string appears for 3D dimensions drawn on the vertexes, edges and faces
of a 3D model (see the chapter “3D Annotations” of the manual on 3D modeling)
− “Projected” – this string appears for 2D dimensions created via the command of auto-dimensioning of
2D projections (see the chapter “3D Annotations” of the manual on 3D modeling).
Correction. This parameter defines the correction amount that will always be
added to a dimension value. It is available only if the options “Auto” or
“Manual with Correction” were chosen for specifying dimension value.
In the case when a scale is defined, the correction is added to the already scaled
dimension value.
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