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proper zero values for vectors

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This commit is contained in:
Hartmut Seichter 2022-06-07 17:27:15 +02:00
parent a5830ad9cd
commit 623f21aedd
2 changed files with 10 additions and 2 deletions
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2
src/core/include/pw/core/point.hpp
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@ -32,7 +32,7 @@ struct point_ {
using value_type = T_;
T_ x, y;
T_ x {0}, y {0};
point_() = default;
point_(T_ x_,T_ y_) : x(x_), y(y_) {}

10
src/core/include/pw/core/vector.hpp
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@ -54,6 +54,8 @@ struct vector2_ : matrix_<2,1,T> {
return std::acos( dot( a.normalized(), b.normalized() ) );
}
static constexpr auto zero() { return vector2_<T>(0,0); }
};
template <typename T>
@ -84,7 +86,9 @@ struct vector3_ : matrix_<3,1,T> {
inline auto xy() const { return vector2_( { x(),y() } ); }
inline auto homogenous(T w = 1) const { return matrix_<4,1,T>( { x(),y(),z(),w } ); }
inline static constexpr vector3_ cross(const vector3_& lhs,const vector3_& rhs) {
inline static constexpr vector3_ cross(const vector3_& lhs,
const vector3_& rhs)
{
return vector3_( {
lhs[1] * rhs[2] - rhs[1] * lhs[2],
lhs[2] * rhs[0] - rhs[2] * lhs[0],
@ -104,6 +108,8 @@ struct vector3_ : matrix_<3,1,T> {
inline static vector3_<T> x_axis() { return vector3_<T> ( { T(1), T(0), T(0) } ); }
inline static vector3_<T> y_axis() { return vector3_<T> ( { T(0), T(1), T(0) } ); }
inline static vector3_<T> z_axis() { return vector3_<T> ( { T(0), T(0), T(1) } ); }
static constexpr auto zero() { return vector3_(0,0,0); }
};
template <typename T>
@ -134,6 +140,8 @@ struct vector4_ : matrix_<4,1,T> {
inline auto project() const { return vector3_<T>({ x()/w(),y()/w(),z()/w() } ); }
static constexpr auto zero() { return vector2_<T>(0,0,0,0); }
};
//