Find the intersection of a line with a plane: Difference between revisions
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(→{{header|Prolog}}: Adding Prolog) |
Drkameleon (talk | contribs) (Added Arturo implementation) |
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</pre> |
</pre> |
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=={{header|Arturo}}== |
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{{trans|Nim}} |
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<lang rebol>define :vector [x, y, z][] |
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addv: function [v1 :vector, v2 :vector]-> |
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to :vector @[v1\x+v2\x, v1\y+v2\y, v1\z+v2\z] |
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subv: function [v1 :vector, v2 :vector]-> |
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to :vector @[v1\x-v2\x, v1\y-v2\y, v1\z-v2\z] |
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mulv: function [v1 :vector, v2 :vector :floating][ |
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if? is? :vector v2 |
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-> return sum @[v1\x*v2\x v1\y*v2\y v1\z*v2\z] |
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else |
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-> return to :vector @[v1\x*v2, v1\y*v2, v1\z*v2] |
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] |
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intersect: function [lV, lP, pV, pP][ |
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tdenom: mulv pV lV |
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if zero? tdenom -> return to :vector @[∞, ∞, ∞] |
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t: (mulv pV subv pP lP) / tdenom |
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return addv mulv lV t lP |
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] |
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coords: intersect to :vector @[0.0, neg 1.0, neg 1.0] |
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to :vector @[0.0, 0.0, 10.0] |
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to :vector @[0.0, 0.0, 1.0] |
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to :vector @[0.0, 0.0, 5.0] |
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print ["Intersection at:" coords]</lang> |
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{{out}} |
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<pre>Intersection at: [x:0.0 y:-5.0 z:5.0]</pre> |
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=={{header|AutoHotkey}}== |
=={{header|AutoHotkey}}== |
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