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https://develop.openfoam.com/Development/openfoam.git
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d64682a7af
- similar to what std::copy_n and std::fill_n would do, except with
templated loops. This allows compile-time transcribing with loop
unrolling. For example,
vector vec1 = ..., vec2 = ...;
FixedList<scalar, 6> values;
VectorSpaceOps<3>::copy_n(vec1.begin(), values.begin());
VectorSpaceOps<3>::copy_n(vec2.begin(), values.begin(3))
// do something with all of these values
STYLE: make start index of VectorSpaceOps optional
ENH: add clamped begin(int) versions to FixedList as per UList
77 lines
1.4 KiB
C++
77 lines
1.4 KiB
C++
#include "vector.H"
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#include "IOstreams.H"
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#include "vectorTools.H"
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#include "unitConversion.H"
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using namespace Foam;
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void test(const vector& a, const vector& b, const scalar tolerance)
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{
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Info<< "Vectors " << a << " and " << b
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<< " are (to tolerance of " << tolerance << "): ";
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if (vectorTools::areParallel(a, b, tolerance))
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Info<< " parallel ";
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if (vectorTools::areOrthogonal(a, b, tolerance))
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Info<< " orthogonal ";
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if (vectorTools::areAcute(a, b))
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Info<< " acute ";
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if (vectorTools::areObtuse(a, b))
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Info<< " obtuse ";
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Info<< ", angle = " << vectorTools::degAngleBetween(a, b);
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Info<< endl;
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}
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int main()
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{
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vector a(vector::uniform(1));
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vector b;
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b.fill(2);
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test(a, b, 0.0);
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test(a, b, VSMALL);
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test(a, b, SMALL);
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test(a, b, 1e-3);
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test(a, b, 1e-1);
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a = vector(1,0,0);
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b = vector(0,2,0);
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test(a, b, 0.0);
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test(a, b, VSMALL);
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test(a, b, SMALL);
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test(a, b, 1e-3);
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test(a, b, 1e-1);
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a = vector(1,0,0);
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b = vector(-1,0,0);
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test(a, b, 0.0);
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test(a, b, VSMALL);
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test(a, b, SMALL);
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test(a, b, 1e-3);
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test(a, b, 1e-1);
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a = vector(1,0,0);
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b = vector(-1,2,0);
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test(a, b, 0.0);
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test(a, b, VSMALL);
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test(a, b, SMALL);
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test(a, b, 1e-3);
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test(a, b, 1e-1);
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Info<< "\nEnd\n" << nl;
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return 0;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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