Sketcher reference/fr

Introduction
L'utilisateur a rédigé un long manuel de référence de 70 pages pour l'Atelier Sketcher qui couvre de nombreux sujets relatifs à l'utilisation de ce workbench. Pour les utilisateurs inexpérimentés, il s'agit d'une introduction qui couvre l'utilisation de base de Sketcher puis aborde de nombreux détails concernant la création d'éléments géométriques et l'utilisation de chaque type de contrainte.

The manual is a work in progress, as some sections are reviewed and updated depending on the development occurring on the Sketcher Workbench. The original manual was written for FreeCAD 0.17, and it has since been updated for 0.18. The latest manual can be found in the forum thread, Sketcher tutorial.



Contents
The general structure of the manual is:
 * Basics
 * Create a sketch
 * The Sketcher window
 * General remarks on degrees of freedom
 * Auto constraints
 * Geometric elements
 * Common usage
 * Line
 * Circle
 * Arc
 * Polyline
 * Rectangle
 * Polygon
 * Slot
 * B-splines
 * Conical sections
 * Construction geometry
 * Point
 * Constraints
 * Selecting constraints
 * Applying constraints
 * The solver
 * Coincidence
 * Point on object
 * Vertical
 * Horizontal
 * Parallel
 * Perpendicular
 * Tangency
 * Equality
 * Symmetry
 * Block
 * Lock
 * Horizontal distance
 * Vertical distance
 * Length
 * Radius and diameter
 * Angle
 * Dos and don'ts with constraints
 * External geometry
 * Creating objects based on sketches
 * Sketches for pads
 * Symmetry
 * Placement and attachment offset
 * Validate sketches