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126 lines
4.5 KiB
Plaintext
126 lines
4.5 KiB
Plaintext
/*!
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\page create_sketcher_page 2D Sketcher
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The 2D Sketcher allows you to create a profile made of curves of 2 types: line segments and arcs.
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<b>Example:</b>
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\image html sketch_example.png
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To create a \b 2D Sketch:
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<ol>
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<li>In the main menu select <em>New Entity -> Basic -> 2D Sketch</em> or click on \image html sketch.png </li>
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<li> Select the plane or the planar face on which to create the sketch. By default the sketch is created on the XOY plane of the global coordinate system.
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If Local Coordinate systems have been created in the study they appear in the combobox and can be selected as reference coordinate system.</li>
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<li> Select a start point. By default the start point of the curve is located at the point of
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origin of the reference coordinate system and the curve lies in the
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plane XOY.</li>
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<li> Create curve portions and click on \b Apply after each step.</li>
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<li> Select either \b Close or <b>Sketch Closure</b> if you want to close the profile before closing the window.</li>
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</ol>
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To create a \b Segment:
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<ol>
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<li> In the <b>Element Type</b> part of the dialog box select:
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\image html line_icon.png </li>
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<li> You can define the segment by either it's <b>end point</b> or a \b direction and a length. The direction is defined relatively to the tangent at the last point of the sketch. It can be:
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- Tangent (colinear to the tangent at the last point)
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- Perpendicular
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- Defined by an angle
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- Defined by a vector (Vx, Vy)
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</li>
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</ol>
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To create an \b Arc:
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<ol>
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<li> In the <b>Element Type</b> part of the dialog box select \image html arc_icon.png </li>
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<li> You can define the segment by either it's <b>end point</b> or a \b direction a \b radius and an \b angle. </li>
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<ul>
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<li>In case of an end point the arc can be built in three different ways:</li>
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<ul>
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<li>From the end point only. The arc is \b tangential to the end of the sketch.</li>
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<li>From the end point and a \b radius. (The radius must be greater than half of the distance between the last point and the end point of the arc).</li>
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<li>From the \b center of the circle and the end point. The constraint on the center is first taken into account.
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The destination point is only used to define the angle of the arc and won't lie on the arc in the general case.</li>
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</ul>
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<li>The direction is defined relatively to the tangent at the last point of the sketch. It can be:</li>
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<ul>
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<li>Tangent (colinear to the tangent at the last point)</li><
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<li>Perpendicular</li>
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<li>Defined by an angle</li>
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<li>Defined by a vector (Vx, Vy)</li>
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</ul>
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</ul>
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</ol>
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For the first segment or arc of the sketch the reference direction is the X direction of the reference coordinate system.
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\n The Result of the operation will be a \b Wire.
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\n <b>Dialog Box:</b>
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\image html sketcher_dlg.png
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\n <b>Arguments:</b>
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<ol>
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<li>Coordinate system (Local or Global CS can be selected)</li>
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<li>Element type (segment or arc).</li>
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<li>Destination type (point or direction).</li>
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<li>Destination point by means of:</li>
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<ul>
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<li>absolute coordinates X,Y;</li>
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<li>relative coordinates DX, DY (with respect to the current point);</li>
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<li>selection of an existing point.</li>
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</ul>
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<li>Destination direction by means of:</li>
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<ul>
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<li>angle between the new segment and the previous one;</li>
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<li>perpendicular to the previous segment (same as previous, but angle
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is predefined and is equal to 90 degrees);</li>
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<li>tangent to the previous segment;</li>
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<li>vector components DX, DY.</li>
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</ul>
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<li>Parameters of an element (for segment : length or target X or Y coordinate value, for arc : radius, angle or center coordinates).</li>
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</ol>
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\b Buttons:
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<b>"Restore"</b> button orientates the viewer correspondingly to the chosen working plane and fits the scene to show all its objects.
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\n <b>"Sketch Validation"</b> button applies the wire, only red part will be built by "Sketch Validation".
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\n <b>"Sketch Closure"</b> will close the Sketch by straight line from last red part and apply it.
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\n <b>TUI Command:</b> <em>geompy.MakeSketcherOnPlane(Command, WorkingPlane)</em>
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\n This algorithm creates a sketcher (wire or face), following the
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textual description, passed through the Command argument. The edges of
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the resulting wire or face will be arcs of circles and/or linear
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segments.
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\n \em Command is a string, defining the sketcher by the coordinates of
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points in the current LCS.
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\n <em>WorkingPlane</em> can be a Local CS, a plane, or a planar face.
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Our <b>TUI Scripts</b> provide you with useful examples of the use of
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\ref tui_sketcher_page "Sketcher".
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*/
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