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53a73fc1d1
Implementation of the new class *BOPAlgo_MakePeriodic* for making the shape periodic in 3D space. Periodicity of the shape means that the shape can be repeated in any periodic direction any number of times without creation of the new geometry or splits. The idea of this algorithm is to make the shape look similarly on the opposite sides or on the period bounds of periodic directions. It does not mean that the opposite sides of the shape will be mirrored. It just means the the opposite sides of the shape should be split by each other and obtain the same geometry on opposite sides. Such approach will allow repeating the shape, i.e. translating the copy of a shape on the period, without creation of new geometry because there will be no coinciding parts of different dimension. Draw commands for the new algorithm: * makeperiodic - makes the shape periodic in required directions; * repeatshape - repeats the periodic shape in requested periodic direction; * periodictwins - returns the periodic twins for the shape; * clearrepetitions - clears all previous repetitions of the periodic shape. Documentation & test cases for the algorithm.
81 lines
1.5 KiB
Plaintext
81 lines
1.5 KiB
Plaintext
polyline p 0 0 0 10 0 0 10 0 10 5 0 10 5 0 5 0 0 5 0 0 0
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mkplane f p
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prism s f 0 5 0
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# make the shape periodic
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makeperiodic sp s -x 10 -z 10 -y 5
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checkshape sp
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checknbshapes sp -vertex 16 -edge 24 -wire 10 -face 10 -shell 1 -solid 1 -t
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checkprops sp -s 350 -v 375
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# get history of the operation
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savehistory h
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# check modification of the bottom and side faces
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explode s f
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modified m h s_1
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checknbshapes m -vertex 6 -edge 7 -wire 2 -face 2 -t
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explode m f
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periodictwins t1 m_1
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periodictwins t2 m_2
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compound t1 t2 t
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checknbshapes t -face 1 -t
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explode s f
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modified m h s_2
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checknbshapes m -vertex 6 -edge 7 -wire 2 -face 2 -t
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explode m f
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periodictwins t1 m_1
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periodictwins t2 m_2
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compound t1 t2 t
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checknbshapes t -face 1 -t
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# repeat the shape
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repeatshape res -x 1 -y 2
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checkshape res
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checknbshapes res -vertex 56 -edge 102 -wire 53 -face 53 -shell 6 -solid 6 -t
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checkprops res -s 2100 -v 2250
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# get repetition history
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savehistory h
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# get generations of bottom face
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generated g h s_1
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checkshape g
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checknbshapes g -vertex 20 -edge 31 -wire 12 -face 12 -t
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checkprops g -s 300
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# get generations of the top face
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generated g h s_3
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checkshape g
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checknbshapes g -vertex 16 -edge 20 -wire 6 -face 6 -t
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checkprops g -s 150
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foreach f [explode g f] {
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periodictwins t $f
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checkshape t
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checknbshapes t -wire 11 -face 11 -t
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checkprops t -s 275
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}
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# clear repetitions
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clearrepetitions
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savehistory h
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# now generated for bottom face should be empty
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if {![regexp "No shapes were generated from the shape." [generated g1 h s_1]]} {
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puts "Error: history is not cleared"
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}
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