mirror of
https://github.com/jeremytammik/RevitSdkSamples.git
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Jeremy Tammik
40 lines
3.1 KiB
Plaintext
40 lines
3.1 KiB
Plaintext
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\viewkind4\uc1\pard\ltrpar\nowidctlpar\b\f0\fs20 Application:\b0 FindColumns\line\b Revit Platform:\b0 All\line\b Revit Version:\b0 2011.0\line\b First Released For:\b0 2011.0\line\b Programming Language:\b0 C#\line\b Skill Level:\b0 Advanced\line\b Category:\b0 Geometry\line\b Type:\b0 ExternalCommand\par
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\b\par
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Subject: \b0 Columns Embedded in Walls\b\par
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Summary: \par
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\b0 This sample shows how to find columns that are embedded in walls with the Revit API method FindReferencesByDirection.\par
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\b\par
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Classes: \par
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\b0 Autodesk.Revit.DB.FilteredElementCollector\par
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Autodesk.Revit.DB.FilteredElementIterator\par
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Autodesk.Revit.DB.Transform\par
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Autodesk.Revit.DB.XYZ\par
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Autodesk.Revit.DB.Document\par
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Autodesk.Revit.UI.Selection.Selection\b\par
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\par
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Project Files:\b0 \par
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FindColumns.cs\par
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\par
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\b Description:\b0 \par
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\pard\ltrpar\nowidctlpar\fi-360\li720 1.\tab Determine which walls to process (either the selected walls, or all walls if none are selected)\par
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2.\tab Find columns embedded in each wall\par
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\pard\ltrpar\nowidctlpar\fi-360\li1440 a.\tab For linear walls\par
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\pard\ltrpar\nowidctlpar\fi-180\li2160 i.\tab Set the height for the ray at 1\rquote above the wall\rquote s level\par
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ii.\tab Find the direction tangent to the wall\rquote s location curve\par
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iii.\tab Because the wall\rquote s LocationCurve is always the wall centerline, use the wall\rquote s width to determine the offset needed for FindReferencesByDirection to shoot its \ldblquote ray\rdblquote just outside of the wall\par
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iv.\tab Find references of objects returned by FindReferencesByDirection when running from one end of the wall to the other end of the wall\par
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v.\tab Check each reference to validate that it is a column within the allowable distance from the origin used with FindReferencesByDirection (don\rquote t want columns past the end of the wall)\par
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\pard\ltrpar\nowidctlpar\fi-360\li1440 b.\tab For non-linear walls\par
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\pard\ltrpar\nowidctlpar\fi-180\li2160 i.\tab Unlike linear walls, where a single ray can be to check for intersections along the entire length of the wall, a non-linear wall must be divided into series of smaller pieces to approximate the wall as a set of shorter straight segments.\par
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ii.\tab Calculate an increment that will be used for the length of these short segments\par
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iii.\tab Check for columns along every incremental piece of the wall using the methodology described above for linear walls.\par
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\pard\ltrpar\nowidctlpar\fi-360\li1440 c.\tab Select the resulting columns\par
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\pard\ltrpar\nowidctlpar\par
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\b Instructions:\par
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\pard\ltrpar\nowidctlpar\fi-360\li720\b0 1.\tab Open the file FindColumns-Basic.rvt or FindColumns-TestCases.rvt\par
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2.\tab Run the external command \ldblquote Find Columns Embedded in Walls\rdblquote\par
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3.\tab If one or more walls are selected before running the command, Revit will select the columns embedded in the selected walls.\par
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4.\tab If no walls are selected before running the command, Revit will select all columns that are embedded in a wall.\par
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}
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