TechDraw Dimension Link/ru
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Расположение в меню |
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TechDraw → Dimension Link |
Верстаки |
TechDraw |
Быстрые клавиши |
? ? |
Представлено в версии |
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См. также |
Description
The Dimension Link tool creates a link between 3D geometry and 1 or more existing projected Dimensions on a Page. This link allows the Dimension to use actual 3D values instead of 2D projected values.
The Dimension Link tool's most common use is in dimensioning isometric views in a ProjectionGroup. The projected length of an Edge in an isometric view will, of course, not necessarily equal the actual length of the Edge. In an orthogonal view the projected and actual lengths will be equal.
The Dimension Link instructs the Dimension to compute it's value directly from the 3D geometry.
Usage
- Create an appropriate dimension on the drawing page using any of Dimension Length, Dimension Horizontal, etc. This dimension will be in the right place on the Page, but will show the projected dimension value.
- Select the geometry in the 3D view, for example, an edge, that corresponds to the projected geometry of your dimension.
- Press the
Dimension Link button.
- A dialog will open. Select one or more Dimensions to be linked to the selected 3D geometry.
- Press OK.
After the link operation is completed the DataMeasureType property of the dimension changes from Projected
to True
.
Limitations
Dimension objects are vulnerable to "topological naming" issues. See the information in the TechDraw Dimension Length tool for more information. It is recommended that linking dimensions be one of the last steps in your drawing process.
The link tool will not stop you from making illogical links, so you need to choose the correct edge from the 3D view when creating the link.
There is currently no way to break a link; you can change the DataMeasureType back to Projected
so that the dimension will use the projected value instead of the linked value.
Note that if the Dimension to be linked is based on two vertices, you should select two vertices in the 3D view. Similarly if the Dimension is based on an edge, you should select an edge in the 3D view.
Properties
- The MeasureType property of a linked Dimension will be changed from "Projected" to "True".
Scripting
See also: TechDraw API and FreeCAD Scripting Basics.
The Dimension Link tool can be used in macros and from the Python console by using the following functions:
to be defined
- Pages: New Default, New Pick
- Views: New View, New Projection Group, New Section, New Detail, New Annotation, New Draft, New Arch, Spreadsheet
- Clips: Clip, ClipPlus, ClipMinus
- Dimensions: New Length, New Horizontal, New Vertical, New Radius, New Diameter, New Angle, New Angle3Pt, New Links
- Decoration: Hatch Area, Geometric Hatch, New Symbol, New Image, Toggle Frames
- Utilities: SaveSVG, SaveDXF
- Additional: Preferences, Import-Export Preferences; Hatching, LineGroup, Templates; TechDraw API, TechDrawGui API

- Установка: Windows, Linux, Mac; Начинающим
- Базовая: О FreeCAD, Верстаки, Настройки, Структура документа, Настройка интерфейса, Свойства, Модель мыши; Учебники
- Верстаки: Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Plot, Points, Raytracing, Reverse Engineering, Robot, Ship, Sketcher, Spreadsheet, Start, Surface workbench, TechDraw, Test Framework, Web
- Скрипты: Введение в Python, Учебник скриптов FreeCAD, Основы скриптов FreeCAD, Установка макросов, Команды графического интерфейса, Единицы Модули: Создание модулей, Создание верстаков, Добавление верстаков Сетки: Сеточные скрипты, Модуль сеток Детали: Модуль Part, Скрипты топологических данных, PythonOCC, Из Mesh в Part Coin scenegraph: The Coin/Inventor scenegraph, Pivy Интерфейс Qt: PySide, Использование графического интерфейса FreeCAD, Создание диалогов Параметрические объекты: Скриптовые объекты Прочее: Кусочки кода, Функции рисования линий, Встраивание FreeCAD, Библиотека векторной математики FreeCAD, Хаб опытных пользователей, Python, Макросы, Основы скриптов FreeCAD, Topological data scripting