4 \brief Help for the stream
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12 <b>Stream</b> is a natural object simulating the river bed.
14 <b>Create stream</b> input panel can be opened via:<ol>
15 <li> The main menu <b>HYDRO => Stream => Create stream</b>;
16 <li> Context menu of <b>NATURAL OBJECTS</b> in Object browser => <b>Create stream</b>;
17 <li> <b>Create steam</b> toolar button.\image html create_stream_toolbar_button.png "Create stream toolbar button"
20 Arguments of the input panel:
22 \image html create_stream_input_panel.png "Create stream input panel"
24 <b>Name</b> - field to define the stream name;<br>
25 <b>Polyline</b> - combo - box to select the polyline defining the immersible zone border. The combo box contains only closed polylines allowed for the immersible zones creation.<br>
26 <b>Hydraulic axis</b> - combo - box to select the polyline, which is hydraulic axis of the river. Rules are following:<ul>
27 <li>Polyline should be open;</li>
28 <li>Polyline should consist from one section only;</li>
29 <li>Polyline cannot be self-intersected or contain sharp angles, which can lead to self-intersections in resulting shell.</li>
31 <b>Apply</b> - button to generate stream;<br>
32 <b>Apply and Close</b> - button to generate stream and close input panel;<br>
33 <b>Close</b> - button to close input panel.<br>
35 Also it's necessary to add profiles into the list. For this select one/several profiles objects in the object browser and click the button <b>Add</b>. The rules are following:<ol>
36 <li>Invalid (not positioned) profiles can not be added; they are simply ignored;</li>
37 <li>Profile can not be added several times to the list; such profiles are simply ignored;</li>
38 <li>Each added profile should intersect with the selected hydraulic axis; if for certain profile does not intersect, it is ignored.</li>
40 It's possible to remove added profiles from the list. For this select profile(s) in the list and click <b>Remove</b> button.<br>
42 Generated stream object contains 3D object, simulating the river bed, and its projection on XY plane, which is used for calculation.<br>
44 Following operations are available with stream:
45 - \ref findbottom "Find bottom"
46 - \ref profilesinterpolation "Profiles interpolation"
50 \image html stream_3d_example.png "Stream 3D example"
51 \image html stream_2d_example.png "Stream 2D example"
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