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geometry/transformations.hpp
56 строк
1 KB
Sergey Yershov
Fix include path for geometry
23 сен 2015, 02:45
23 сен 2015, 02:45
df5b060
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#pragma once #include "geometry/point2d.hpp" #include "base/matrix.hpp" /// v` = v * M, v = [x, y, 1] namespace math { template <typename T, typename U> Matrix<T, 3, 3> const Rotate(Matrix<T, 3, 3> const & m, U const & cos, U const & sin) { Matrix<T, 3, 3> m1 = Identity<T, 3>(); m1(0, 0) = cos; m1(0, 1) = sin; m1(1, 0) = -sin; m1(1, 1) = cos; return m * m1; } template <typename T, typename U> Matrix<T, 3, 3> const Rotate(Matrix<T, 3, 3> const & m, U const & angle) { return Rotate(m, cos(angle), sin(angle)); } template <typename T, typename U> Matrix<T, 3, 3> const Shift(Matrix<T, 3, 3> const & m, U const & dx, U const & dy) { Matrix<T, 3, 3> m1 = Identity<T, 3>(); m1(2, 0) = dx; m1(2, 1) = dy; return m * m1; } template <typename T, typename U> Matrix<T, 3, 3> const Shift(Matrix<T, 3, 3> const & m, m2::Point<U> const & pt) { return Shift(m, pt.x, pt.y); } template <typename T, typename U> Matrix<T, 3, 3> const Scale(Matrix<T, 3, 3> const & m, U const & kx, U const & ky) { Matrix<T, 3, 3> m1 = Identity<T, 3>(); m1(0, 0) = kx; m1(1, 1) = ky; return m * m1; } template <typename T, typename U> Matrix<T, 3, 3> const Scale(Matrix<T, 3, 3> const & m, m2::Point<U> const & pt) { return Scale(m, pt.x, pt.y); } }