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b939a13923
Improve projection of ellipse and circle on a plane in case of the same parametrization of the original curve and the projected one is not necessary. Now the projection is a canonical curve instead of B-spline.
28 lines
910 B
Plaintext
28 lines
910 B
Plaintext
puts ""
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puts "=========================================================================="
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puts "OCC31016: Projection of an ellipse or a circle is a B-spline in some cases"
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puts "=========================================================================="
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puts ""
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ellipse c 0 0 0 0.866025403784439 0 0.5 0.5 0 -0.866025403784439 20 10
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plane p 0 0 0 0 0 1
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projonplane r c p 0
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if {![regexp {Circle} [dump r]]} {
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puts "ERROR: Projected curve is not a circle"
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}
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# calculate a parametric shift on the projected curve
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set pnt [ProjectCurvePointToPlaneAlongDir c 0 p]
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parameters r [lindex $pnt 0] [lindex $pnt 1] [lindex $pnt 2] 0.1 shift
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if {[CheckProjectionToPlane 100 c 0 [expr 2*[dval pi]] r [dval shift] [expr [dval shift]+2*[dval pi]] p]} {
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puts ""
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puts "OK: All sample points are projected correctly"
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puts ""
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} else {
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puts ""
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puts "ERROR: Projection is incorrect for some points"
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puts ""
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}
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