We have moved to https://dokuwiki.librecad.org/

Lots of content was already moved to the new wiki, but there is still work to do. If you want to contribute, please register a new account at https://dokuwiki.librecad.org/

This wiki will be kept for a while to keep search engine results valid. Moved sites may be deleted here in future.

Difference between revisions of "Dimensions"

From LibreCAD wiki
Jump to: navigation, search
(Added dimension types with example image. Added entry to "Tools" and "Reference" categories.)
m (Dimensions objects "blow up" or are very large when opening file: Minor formatting and clarity)
 
(2 intermediate revisions by one user not shown)
Line 1: Line 1:
 
= Types of Dimensions =
 
= Types of Dimensions =
 
 
LibreCAD includes the following dimensions:
 
LibreCAD includes the following dimensions:
[[File:Types of Dimensions.png|thumb|Basic examples of dimension types (not necessarily representative of ideal drawing conventions)]]
+
[[File:Types of Dimensions.png|thumb|300px|Basic examples of dimension types (not necessarily representative of ideal drawing conventions)]]
 
*'''Aligned''' - parallel to a line between two points
 
*'''Aligned''' - parallel to a line between two points
 
*'''Linear''' - distance between two points from any angle of interest, default is 0 (horizontal) and is changed via Properties
 
*'''Linear''' - distance between two points from any angle of interest, default is 0 (horizontal) and is changed via Properties
Line 8: Line 7:
 
*'''Vertical''' - vertical distance between two points, '''Linear''' with a starting angle of 90°
 
*'''Vertical''' - vertical distance between two points, '''Linear''' with a starting angle of 90°
 
*'''Radial''' - radius of a circle or arc
 
*'''Radial''' - radius of a circle or arc
*'''Diametric''' - diameter of a circle of arc
+
*'''Diametric''' - diameter of a circle or arc
 
*'''Angular''' - angle between two lines or linear parts of objects
 
*'''Angular''' - angle between two lines or linear parts of objects
 
*'''Leader''' - not a dimension ''per se'', but used for notes in drawings
 
*'''Leader''' - not a dimension ''per se'', but used for notes in drawings
 +
 +
= Properties of Dimension Objects =
 +
== In Drawing Preferences ==
 +
[[File:Dimensions-Defaults-mm.PNG|thumb|300px|Default dimensions settings in Drawing Preferences for files created when "mm" is set at the default unit for new files]]
 +
[[File:Parts of the Dimension Object.png|thumb|300px|Illustation of dimension format parameters from "Drawing Preferences"]]
 +
Overarching dimension appearance for a file is set in Drawing Preferences:
 +
*General scale
 +
*Text size & position
 +
**Length factor
 +
**Text style
 +
**Text height
 +
**Text alignment
 +
**Dimension line gap
 +
**Color
 +
*Extension lines
 +
**Offset
 +
**Enlarge
 +
**Fixed length
 +
**Color
 +
**Width
 +
*Dimension lines, arrows, & ticks
 +
**Arrow size
 +
**Tick size
 +
**Color
 +
**Width
 +
*Format units
 +
**Linear units
 +
**Linear precision
 +
**Linear zeros
 +
**Decimal separator
 +
**Angular units
 +
**Angular precision
 +
**Angular zeros
  
 
= Issues and Workarounds =
 
= Issues and Workarounds =
Line 16: Line 48:
  
 
== Dimensions objects "blow up" or are very large when opening file ==
 
== Dimensions objects "blow up" or are very large when opening file ==
When opening a previously saved file (LibreCAD 2.1.3), there may be times when the existing dimensions appear to have "blown-up", or the dimension objects are represented as very large, while the dimensions themselves remain correct. In this case, the file had originally left all default values the same but changed the <code>General Scale</code> setting to <code>50</code> and the <code>Linear Precision</code> to <code>0.00</code>. An examination of the default dimension object settings and the settings changed in this file reveals the differences. The main items are <code>Text Height</code> and <code>Arrow Size</code>, but other entries have also changed: <code>Extension lines: Offset</code>, the default for <code>Extension lines: Fixed length</code>, <code>Linear zeros</code>, and <code>Decimal seperator</code>. Change these values back to defaults, or to where you intended them to be, will revert your drawing to its intended form.
+
When opening a previously saved file (LibreCAD 2.1.3), there may be times when the existing dimensions appear to have "blown-up", or the dimension objects are represented as very large, while the dimensions themselves remain correct. In this case, the file had originally left all default values the same but changed the General Scale setting to 50 and the Linear Precision to 0.00. An examination of the default dimension object settings and the settings changed in this file reveals the differences. The main items are Text Height and Arrow Size, but other entries have also changed: Extension lines: Offset, the default for Extension lines: Fixed length, Linear zeros, and Decimal separator. Change these values back to defaults, or to where you intended them to be, will revert your drawing to its intended form.
  
 
This issue has been submitted to Github but is left here as a reference. Possible that this is a side effect of having certain units (e.g., inches) specified as the default unit for new drawings.
 
This issue has been submitted to Github but is left here as a reference. Possible that this is a side effect of having certain units (e.g., inches) specified as the default unit for new drawings.
  
 
<gallery heights="250" widths="300">
 
<gallery heights="250" widths="300">
 +
File:New File Dimension Defaults.PNG|Default Dimensions settings for new drawings when the default units for new drawings is set as "inches".
 
File:Dimensions blow-up example.PNG|A dxf file opened and found to have objects at larger than intended size.
 
File:Dimensions blow-up example.PNG|A dxf file opened and found to have objects at larger than intended size.
File:Dimensions blow-up.PNG|Unintended changes to Dimensions settings
+
File:Dimensions blow-up.PNG|Unintended changes to Dimensions settings that appear to mirror default settings when the default units for new drawings is set as "mm".
File:New File Dimension Defaults.PNG|Default Dimensions settings
+
 
 
</gallery>
 
</gallery>
  
 
[[Category:Tools]]
 
[[Category:Tools]]
 
[[Category:Reference]]
 
[[Category:Reference]]

Latest revision as of 11:27, 25 October 2017

Types of Dimensions

LibreCAD includes the following dimensions:

Basic examples of dimension types (not necessarily representative of ideal drawing conventions)
  • Aligned - parallel to a line between two points
  • Linear - distance between two points from any angle of interest, default is 0 (horizontal) and is changed via Properties
  • Horizontal - horizontal distance between two points, Linear with a starting angle of 0°
  • Vertical - vertical distance between two points, Linear with a starting angle of 90°
  • Radial - radius of a circle or arc
  • Diametric - diameter of a circle or arc
  • Angular - angle between two lines or linear parts of objects
  • Leader - not a dimension per se, but used for notes in drawings

Properties of Dimension Objects

In Drawing Preferences

Default dimensions settings in Drawing Preferences for files created when "mm" is set at the default unit for new files
Illustation of dimension format parameters from "Drawing Preferences"

Overarching dimension appearance for a file is set in Drawing Preferences:

  • General scale
  • Text size & position
    • Length factor
    • Text style
    • Text height
    • Text alignment
    • Dimension line gap
    • Color
  • Extension lines
    • Offset
    • Enlarge
    • Fixed length
    • Color
    • Width
  • Dimension lines, arrows, & ticks
    • Arrow size
    • Tick size
    • Color
    • Width
  • Format units
    • Linear units
    • Linear precision
    • Linear zeros
    • Decimal separator
    • Angular units
    • Angular precision
    • Angular zeros

Issues and Workarounds

The intent is not to mirror related Issues in the GitHub repository, but to present workarounds to accomplish specific tasks.

Dimensions objects "blow up" or are very large when opening file

When opening a previously saved file (LibreCAD 2.1.3), there may be times when the existing dimensions appear to have "blown-up", or the dimension objects are represented as very large, while the dimensions themselves remain correct. In this case, the file had originally left all default values the same but changed the General Scale setting to 50 and the Linear Precision to 0.00. An examination of the default dimension object settings and the settings changed in this file reveals the differences. The main items are Text Height and Arrow Size, but other entries have also changed: Extension lines: Offset, the default for Extension lines: Fixed length, Linear zeros, and Decimal separator. Change these values back to defaults, or to where you intended them to be, will revert your drawing to its intended form.

This issue has been submitted to Github but is left here as a reference. Possible that this is a side effect of having certain units (e.g., inches) specified as the default unit for new drawings.