Draft tutorial/fr

Introduction
Ce tutoriel est destiné à présenter au lecteur le flux de travail de base de l' Atelier Planche à Dessin, qui comprend la création de profils, l'utilisation de plans de travail et la création de dimensions, de textes et d'annotations. Ce tutoriel utilise la notation  '(X, Y, Z)'  pour désigner les coordonnées nécessaires pour définir des points dans un objet



Exigences

 * FreeCAD version 0.16 ou supérieure
 * Le lecteur doit savoir utiliser les onglets  'Données'  et  'Affichage'  pour modifier les propriétés d'un élément si désiré

Procédure
Il est obligatoire de veiller à ce que la barre d'Outils Verrouillage Planche à Dessin soit disponible pour être utilisée dans ce tutoriel.


 * 1) Démarrer FreeCAD
 * 2) Si vous n'avez pas ouvert un nouveau document FreeCAD (la plupart des fenêtres de FreeCAD sont grisées), dans le menu déroulant, cliquez sur Fichier -> Nouveau ou cliquez sur l'outil Créer un nouveau document [[Image: Document-new.svg | 32px]].
 * 3) Activez l'  Atelier Planche à Dessin 
 * 4) Sélectionnez le menu Modifier
 * 5) Cliquez sur Préférences
 * 6) Aller à Planche à dessin et sélectionner l'onglet Grille et magnétisme
 * 7) Vérifiez que la barre d'outils Montrer la barre d'outils d'accrochage  est active

Notez que vous pouvez changer la visibilité de la Grilledans ce menu, au cas où vous souhaitez le faire

Utilisation des plans
Les plans sont utilisés pour restreindre le comportement des outils de Dessin à un plan spécifique, en évitant les problèmes d'emplacement des points et des courbes dans des pièces complexes. Les plans peuvent faire référence aux axes du système de coordonnées  (XY, YZ, ...) ou ils peuvent utiliser une surface plane dans le document comme référence.


 * 1) Sélectionnez [[Image: Draft_SelectPlane.png | 32px]]  Plan de Travail. Soit dans la barre d'outils atelier Dessin soit dans l'onglet  Utilitaire.
 * 2) Sélectionnez le plan  XY .

Creating Profiles
The creation of profiles can be done in several ways. Though it is possible to use simple arcs and lines to do most of the work, FreeCAD includes several tools to speed up the process.

Lines and Arcs

 * 1) Select [[Image:Draft_Arc.png]] Arc.
 * 2) Set the center at (0, 0, 0)
 * 3) Set the radius to 30 mm
 * 4) The starting angle is 60.0°
 * 5) The aperture is 60.0°

Repeat the same procedure for a second arc with a radius of 25 mm, the other properties remain unchanged.

We will now close the profile with a couple of lines.


 * 1) Select [[Image:Draft_Line.png]] Line.
 * 2) Approach the Endpoint of either arc. A white point should appear, alongside this icon  [[Image:Snap_Endpoint.png|32px]] when your cursor approaches the endpoint.
 * 3) Select the endpoint of the other arc.
 * 4) Repeat for the other side of the arcs.

We now have several curves that detail a profile, however it is still not recognized as a single entity. It is possible to continue working with the elements intact, though in this case we will fuse them into a single object.

The following actions will alter the way the objects behave, making it hard to edit their properties, so it is best to do any necessary modifications before proceding.


 * 1) Select an arc and a line while pressing the CTRL key
 * 2) Click on [[Image:Draft_Upgrade.png]] Upgrade

This will fuse both objects into a Wire. Repeat until the four elements are fused into a single Wire.

Planes, Rectangles and Circles

 * 1) Click [[Image:Draft_Rectangle.png]] Rectangle
 * 2) Set the first point on (-100, -60, 0)
 * 3) Set the second point on (140, 90, 0)

The result is a Plane. Its properties can be modified to remove the filling, by changing its Display Mode to Wireframe.


 * 1) Select [[Image:Draft_Circle.png]]
 * 2) Set the center to (0, 0, 0)
 * 3) Set the radius to 15 mm

Polygons

 * 1) Select [[Image:Draft_Polygon.png]] Polygon
 * 2) The center point is located at (0, 0, 0)
 * 3) Set the radius to 50 mm
 * 4) Set the number of sides to 6

Arrays
Arrays are used to replicate an object several times in a direction, a revolution axis or along a path.
 * 1) Select the Wire that was previously created
 * 2) Click  [[Image:Draft_Array.png|32px]] Array
 * 3) In the Data tab of the object, change the Array type from ortho to polar
 * 4) Change Number Polar from 1 to 3

Adding Dimensions
Dimensions require a constant use of Snapping Constraints to properly select the points that one wishes to dimension. The Snapping toolbar is used to change the possible points that can be selected.


 * 1) Select  [[Image:Draft_Dimension.png]] Dimension
 * 2) Select the first point. This can be either an existing element or specified by coordintes. For this tutorial, the first point will alwaysvbe (0, 0, 0)
 * 3) Select the second point. Approach the midpoint of the top line of the polygon. A white point should appear alongside this icon [[Image:Snap_Midpoint.png|32px]]
 * 4) Move the cursor to the desired location of the dimension and click on it.
 * 5) Change the font size on the View tab to 6 mm

Repeat the process for the arcs and circles.

Annotations and Text
There is a slight difference between the two: it is only possible to use the second one as a profile to perform 3D operations.

Annotations

 * 1) Select  [[Image:Draft_Text.png]] Text
 * 2) Select the reference point in the 3D View. In this case, the midoint of the top arc.
 * 3) Enter your text and press Enter. Repeat for as many lines of text as you wish to input.
 * 4) Press Enter

Text

 * 1) Select [[Image:Draft_ShapeString.png|32px]] ShapeString
 * 2) Select the reference point in the 3D View. This can be an existing point or the current cursor location.
 * 3) Enter your text and press Enter
 * 4) Set the desired font size
 * 5) Leave tracking at 0 mm
 * 6) Select the path to the font file that you wish to use

Creating Blueprints
To create blueprints, it is necessary to create a Drawing  with the elements that you wish to use. Please read the Drawing tutorial for a detailed description.

We are now finished with the basic workflow for the Draft Module.

Recommended Lectures

 * For a detailed description of the workbench, please see Draft Module
 * To know more about the Snapping controls, see Draft Snap