Drawing Workbench/es

El módulo de Dibujo te permite poner en papel tu trabajo 3D. Es decir, sirve para poner vistas de tus modelos en una ventana 2D e insertar esas ventanas en un dibujo, por ejemplo una hoja con un formato, un título y tu logotipo y, finalmente, imprimir esa hoja. El módulo de Dibujo está en desarrollo y es más o menos una muestra de sus posibilidades!

Herramientas GUI
Note The Draft Module has its own Draft_Drawing too to place Draft objects on paper. It has a couple of extra capabilities over the standard Drawing tools, and supports specific objects like Draft dimensions.



En la imagen se ven los principales elementos del módulo de Dibujo. El documento contiene un objeto forma (Schenkel) que queremos poner en papel. Para ello creamos una "Página". Una página se crea a partir de una plantilla, en este caso la plantilla "A3_apaisado". La plantilla es un documento SVG que puede contener la disposición habitual de tus dibujos, tu logotipo o los estándares que utilices.

En la página puedes insertar una o varias vistas. Cada vista tiene una posición en la página (Propiedades X, Y), un factor de escala (Propiedad escala) y propiedades adicionales. Cada vez que la página, o la vista, o el objeto referenciado cambia, la página se regenera y la visualización de la página se actualiza.

Archivos de guión
De momento, el interfaz (GUI) para el usuario final está poco desarrollado, por lo que los archivos de guión de la API son más interesantes. A continuación veremos ejemplos de cómo utilizar los archivos de guión de la API del módulo de Dibujo.

Aquí un guión que fácilmente puede llenar el Macro_CartoucheFC hoja FreeCAD A3_Landscape.

Ejemplo Simple
Lo primero, se necesitan los módulos Parte y Drawing: Creamos una pequeña Pieza, como muestra Proyección directa. G0 significa borde en arista, y G1 es continuidad de tangencia. Todo se proyecta sobre el plano Z: Vector de proyección diferente Projectar a SVG

En modo paramétrico
Create the body Insert a Page object and assign a template Create a view on the "Shape" object, define the position and scale and assign it to a Page Create a second view on the same object but this time the view will be rotated by 90 degrees. Create a third view on the same object but with an isometric view direction. The hidden lines are activated too. Change something and update. The update process changes the view and the page.

Accessing the bits and pieces
Get the SVG fragment of a single view Get the whole result page (it's a file in the document's temporary directory, only read permission) Important: free the file! Insert a view with your own content: That leads to the following result:



General Dimensioning and Tolerancing
Drawing dimensions an toleranecs are still under development but you can get some basic functionality with a bit of work.

First you need to get the gdtsvg python module from here (WARNING: This could be broken at any time!):

https://github.com/jcc242/FreeCAD

To get a feature control frame, try out the following: Here is a good breakdown of the contents of a feature control frame: http://www.cadblog.net/adding-geometric-tolerances.htm

The parameters to pass to control frame are:
 * 1) X-coordinate in SVG-coordinate system (type string)
 * 2) Y-coordinate in SVG-coordinate system (type string)
 * 3) The desired geometric characteristic symbol (tuple, svg string as first, width of symbol as second, height of symbol as third)
 * 4) The tolerance (type string)
 * 5) (optional) The diameter symbol (tuple, svg string as first, width of symbol as second, height of symbol as third)
 * 6) (optional) The condition modifying material (tuple, svg string as first, width of symbol as second, height of symbol as third)
 * 7) (optional) The first datum (type string)
 * 8) (optional) The first datum's modifying condition (tuple, svg string as first, width of symbol as second, height of symbol as third)
 * 9) (optional) The second datum (type string)
 * 10) (optional) The second datum's modifying condition (tuple, svg string as first, width of symbol as second, height of symbol as third)
 * 11) (optional) The third datum (type string)
 * 12) (optional) The third datum's material condition (tuple, svg string as first, width of symbol as second, height of symbol as third)

The ControlFrame function returns a type containing (svg string, overall width of control frame, overall height of control frame)'''

To get a dimension, try out the following: Inputs for linear dimension are:
 * 1) point1, an (x,y) tuple with svg-coordinates, this is one of the points you would like to dimension between
 * 2) point2, an (x,y) tuple with svg-coordinates, this is the second point you would like to dimension between
 * 3) textpoint, an (x,y) tuple of svg-coordinates, this is where the text of your dimension will be
 * 4) dimensiontext, a string containing the text you want the dimension to say
 * 5) linestyle, a string containing svg (i.e. css) styles, using the getStyle function to retrieve a preset string, for styling the how the lines look
 * 6) arrowstyle, a string containing svg (i.e. css) styles, using the getStyle function to retrieve a preset string, for styling how the arrows look
 * 7) textstyle, a string containing svg (i.e. css) styles, using the getStyle function to retrieve a preset string, for styling how the text looks

With those two, you can proceed as above for displaying them on the drawing page. This module is very buggy and can be broken at any given moment, bug reports are welcome on the github page for now, or contact jcc242 on the forums if you post a bug somewhere else.

Templates
FreeCAD comes bundled with a set of default templates, but you can find more on the Drawing templates page.

Extending the Drawing Module
Some notes on the programming side of the drawing module will be added to the Drawing Documentation page. This is to help quickly understand how the drawing module works, enabling programmers to rapidly start programming for it.