3 .. |SketchButton.icon| image:: images/SketchButton.png
9 Sketch plug-in includes features for creation of 2D shapes.
11 The sketch creation takes the following steps:
13 - definition of sketch plane;
14 - creation of sketch objects from scratch;
15 - generation of sketch objects via operations on the existing operations;
16 - definition of constraints.
18 Sketch can be created in the active part or in a partset (if there is no active part).
22 #. select in the Main Menu *Sketch - > Sketch* item or
23 #. click |SketchButton.icon| **Sketch** button in Sketch toolbar:
25 First define a plane for the sketch:
27 .. image:: images/PlaneDefinition.png
30 - specify plane size (equal to 25 in the example above);
31 - select the appropriate plane in the viewer.
33 Note that coordinate planes will be suggested for selection if no convenient objects for plane selection are displayed in the viewer:
35 .. image:: images/CoordinatePlanes.png
38 After the plane for sketch is selected, the following property panel will be opened:
40 .. image:: images/SketchPanel.png
46 - **Reversed** check box - allows reversing the sketch plane normal;
47 - **Set plane view** button - switches the viewer to the top view for the sketch plane;
48 - **Show geometrical constraints** check box - displays/hides geometrical constraints:
49 - **Show dimensional constraints** check box - displays/hides dimensional constraints;
50 - **Show existing expressions** check box - displays/hides expressions.
51 - **Show free points** check box - highlights free points in the current sketch if it is checked.
52 - **Change sketch plane** button - allows to change working plane of the current sketch.
54 Now it is possible to:
56 - create :ref:`sketch objects <sketch_objects>`
57 - create :ref:`constraints <sketch_constraints>`
58 - perform :ref:`sketch operations <sketch_operations>`
60 To apply or cancel sketch creation use Apply and Cancel buttons from the
61 Sketch panel as well as equivalent buttons from Sketch toolbar.
63 The Result of operation will be a COMPOUND. In the object tree, Result node is located in
64 **Constructions** folder.
66 The Name is assigned automatically: **Sketch_1**, **Sketch_2**, ... both for Feature and Result.
70 .. py:function:: model.addSketch(PartOrPartSet, plane)
72 :param part: The current part object.
73 :param object: A plane.
74 :return: Result object.
81 The plug-in includes the following features for creation of 2D objects:
94 .. _sketch_constraints:
99 Constraints are available and viewable during sketch creation or editing.
101 The goal of constraints creation is to fix sketch geometry, i.e. set degrees of freedom to zero.
103 If all degrees of freedom are eliminated, the sketch is fixed and displayed with green color.
105 .. image:: images/Sketch_fixed.png
111 If any degrees of freedom remain unsolved, the sketch is under-constrained and displayed with red color.
113 .. image:: images/Sketch_underconstrained.png
117 Underconstrained Sketch
119 The plug-in includes the following constraints:
125 horizontalDistFeature.rst
126 verticalDistFeature.rst
130 horizontalFeature.rst
134 perpendicularFeature.rst
136 coincedentFeature.rst
141 .. _sketch_operations:
145 Operations modify existing features of the sketch or create new ones by copying them.
147 The plug-in includes the following operations:
155 projectionFeature.rst
156 intersectionFeature.rst
158 translationFeature.rst