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14 lines
426 B
Plaintext
14 lines
426 B
Plaintext
bsplinecurve b1 3 5 0 4 1 1 2 1 3 1 4 4 0 0 0 0.8 1 0.5 0 0.6 2 1 0 0.5 2 2 0 1 3 1.5 0 1 4 1.5 0 1 5 2 0 1
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cvalue b1 2.0 x y z dx dy dz
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set delta 0.01
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set yvalue [dval y]
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set zvalue [dval z]
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repeat 100 {
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cmovetangent b1 2.0 x $yvalue $zvalue dx dy dz 1
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set yvalue [expr $yvalue + $delta ]
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set zvalue [expr $zvalue + $delta ]
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repaint
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}
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renamevar b1 result
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checklength result -l 7.3508406963557418
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