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22 lines
629 B
C++
22 lines
629 B
C++
#pragma once
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#include <glm/glm.hpp>
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inline glm::dmat4 BasisChange(glm::dvec3 u, glm::dvec3 v, glm::dvec3 n)
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{
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return glm::dmat4{glm::dvec4(u.x, v.x, n.x, 0.0), glm::dvec4(u.y, v.y, n.y, 0.0), glm::dvec4(u.z, v.z, n.z, 0.0), glm::dvec4(0.0, 0.0, 0.0, 1.0)}; // 4 columns; first rows: u, v, n
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}
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inline glm::dmat4 BasisChange(glm::dvec3 v, glm::dvec3 n)
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{
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glm::dvec3 u = glm::cross(v, n);
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return BasisChange(u, v, n);
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}
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template <typename T> inline glm::vec<3, T> RotateY(const glm::vec<3, T> &v, T angle)
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{
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T s = std::sin(angle);
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T c = std::cos(angle);
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return glm::vec<3, T>(c * v.x + s * v.z, v.y, c * v.z - s * v.x);
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}
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