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59 lines
3.2 KiB
Plaintext
59 lines
3.2 KiB
Plaintext
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/*!
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\page fast_intersection_page Fast intersection
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This operation checks whether or not two selected shape are overlapped.
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\n This tool is useful for fast detection of intersections and gaps.
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In contrast to Boolean Operations, Partition and Detect Self-intersection
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algorithms that compute topological intersections, this algoritm computes
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intersections by generating tessellation (triangulation) of the source
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shapes and detecting overlapping of resulting meshes. High performance is
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achieved through the use of existing triangulation of faces.
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\note For more information about Partition and Boolean Operations Algorithms
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and their limitations refer to <a href="SALOME_BOA_PA.pdf">this document</a>.
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\image html measures12.png
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In this dialog:
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- \b Object 1 - the checked object. \b Selection button allows picking it in the viewer or in the object browser.
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- \b Object 2 - the checked object. \b Selection button allows picking it in the viewer or in the object browser.
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\note This dialog supports navigation through the selectable objects (in OCC 3D viewer only):
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- Scroll mouse wheel with pressed \em Ctrl key or press \em "S", \em "P" keys when input focus is
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in the viewer to navigate between selectable objects.
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- Press left mouse button to select an appropriate object to the dialog box.
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.
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For more details, please refer to the \em "Functionality common for OCC and VTK viewers" chapter
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of the GUI module's documentation.
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- <b>Deflection coefficient</b> desires the quality of tessellation.
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\note Quality of the result depends on the quality of triangulation.
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In some cases changing this coefficient can strongly affect the result.
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- <b>Detect gaps</b> - the check box that allows detecting small gaps with between shapes.
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- <b>Tolerance</b> distance between shapes used for detecting gaps.
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- <b>Compute intersections</b> button computes interferences.
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- <b>Sub-shapes of Object 1</b> - list of sub-shapes from first shape being checked that localize the intersection.
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- <b>Sub-shapes of Object 2</b> - list of sub-shapes from second shape being checked that localize the intersection.
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- \b Apply and <b>Apply and Close</b> buttons are used to store selected intersected shapes in the study for further analysis.
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\note Result of this operation cannot be represented as a topological shape. Tool returns as
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the result a list of sub-shapes from each shape being checked that localize the intersection.
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The intersection will be published as a compound containing intersected sub-shapes from both source objects.
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This result might be helpful to the user for further analysis of the initial shapes.
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\n <b>Result:</b> Boolean, two lists of IDs of sub-shapes from shapes being checked that localize the intersection.
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\n <b>TUI Command:</b> <em>geompy.FastIntersect(theShape1, theShape1, theTolerance = 0.0, theDeflection = 0.001),</em> \n
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where: \n
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\em theShape1 First shape. \n
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\em theShape2 Second shape. \n
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\em theTolerance If negative or zero value, it will be possible to detect intersections
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If non-zero positive value, it will be possible to detect gaps. \n
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\em theDeflection Linear deflection for shapes.
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If deflection <= 0, than use default deflection 0.001 \n
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See also a \ref tui_fast_intersection_page "TUI example".
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*/
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