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16 lines
703 B
C++
16 lines
703 B
C++
$NetBSD: patch-kscreensaver_kdesavers_vec3.cpp,v 1.1 2015/03/18 10:27:54 joerg Exp $
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--- kscreensaver/kdesavers/vec3.cpp.orig 2015-03-17 22:51:32.000000000 +0000
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+++ kscreensaver/kdesavers/vec3.cpp
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@@ -59,7 +59,9 @@ vec3<T>& vec3<T>::rotate(const vec3<T>&
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// part of vector which is parallel to r
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vec3<T> par(r*(*this)/(r*r) * r);
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// part of vector which is perpendicular to r
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- vec3<T> perp(*this - par);
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+ vec3<T> perp(*this);
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+ std::valarray<T> &perp_ = perp;
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+ perp -= std::valarray<T>(par);
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// rotation direction, size of perp
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vec3<T> rotdir(norm(perp) * normalized(crossprod(r,perp)));
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*this = par + cos(phi)*perp + sin(phi)*rotdir;
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