vec3h.h

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//
// Copyright 2016 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
// This file is generated by a script.  Do not edit directly.  Edit the
// vec.template.h file to make changes.
 
#ifndef PXR_BASE_GF_VEC3H_H
#define PXR_BASE_GF_VEC3H_H
 
 
#include "pxr/pxr.h"
#include "pxr/base/gf/api.h"
#include "pxr/base/gf/limits.h"
#include "pxr/base/gf/traits.h"
#include "pxr/base/gf/math.h"
#include "pxr/base/gf/half.h"
#include "pxr/base/tf/diagnostic.h"
#include "pxr/base/tf/hash.h"
 
#include <cstddef>
#include <type_traits>
#include <cmath>
 
#include <iosfwd>
 
PXR_NAMESPACE_OPEN_SCOPE
 
class GfVec2h;
 
template <>
struct GfIsGfVec<class GfVec3h> { static const bool value = true; };
 
class GfVec3h
{
public:
    typedef GfHalf ScalarType;
    static const size_t dimension = 3;
 
    GfHalf x, y, z;
 
    GfVec3h() = default;
 
    constexpr explicit GfVec3h(GfHalf value)
        : x(value), y(value), z(value)
    {
    }
 
    constexpr GfVec3h(GfHalf s0, GfHalf s1, GfHalf s2)
        : x(s0), y(s1), z(s2)
    {
    }
 
    template <class Scl>
    constexpr explicit GfVec3h(Scl const *p)
        : x(p[0]), y(p[1]), z(p[2])
    {
    }
 
    explicit GfVec3h(class GfVec3d const &other);
 
    explicit GfVec3h(class GfVec3f const &other);
 
    GfVec3h(class GfVec3i const &other);
    static GfVec3h XAxis() {
        GfVec3h result(0);
        result[0] = 1;
        return result;
    }
 
    static GfVec3h YAxis() {
        GfVec3h result(0);
        result[1] = 1;
        return result;
    }
 
    static GfVec3h ZAxis() {
        GfVec3h result(0);
        result[2] = 1;
        return result;
    }
 
    static GfVec3h Axis(size_t i) {
        GfVec3h result(0);
        if (i < 3)
            result[i] = 1;
        return result;
    }
 
    GfVec3h &Set(GfHalf s0, GfHalf s1, GfHalf s2) {
        x = s0;
        y = s1;
        z = s2;
        return *this;
    }
 
    GfVec3h &Set(GfHalf const *a) {
        return Set(a[0], a[1], a[2]);
    }
 
    GfHalf const *data() const { return &x; }
    GfHalf *data() { return &x; }
    GfHalf const *GetArray() const { return data(); }
 
    GfHalf const &operator[](size_t i) const { return data()[i]; }
    GfHalf &operator[](size_t i) { return data()[i]; }
 
    friend inline size_t hash_value(GfVec3h const &vec) {
        return TfHash::Combine(vec.x, vec.y, vec.z);
    }
 
    bool operator==(GfVec3h const &other) const {
        return x == other.x &&
               y == other.y &&
               z == other.z;
    }
    bool operator!=(GfVec3h const &other) const {
        return !(*this == other);
    }
 
    // TODO Add inequality for other vec types...
    GF_API
    bool operator==(class GfVec3d const &other) const;
    GF_API
    bool operator==(class GfVec3f const &other) const;
    GF_API
    bool operator==(class GfVec3i const &other) const;
    
    GfVec3h operator-() const {
        return GfVec3h(-x, -y, -z);
    }
 
    GfVec3h &operator+=(GfVec3h const &other) {
        x += other.x;
        y += other.y;
        z += other.z;
        return *this;
    }
    friend GfVec3h operator+(GfVec3h const &l, GfVec3h const &r) {
        return GfVec3h(l) += r;
    }
 
    GfVec3h &operator-=(GfVec3h const &other) {
        x -= other.x;
        y -= other.y;
        z -= other.z;
        return *this;
    }
    friend GfVec3h operator-(GfVec3h const &l, GfVec3h const &r) {
        return GfVec3h(l) -= r;
    }
 
    GfVec3h &operator*=(double s) {
        x *= s;
        y *= s;
        z *= s;
        return *this;
    }
    GfVec3h operator*(double s) const {
        return GfVec3h(*this) *= s;
    }
    friend GfVec3h operator*(double s, GfVec3h const &v) {
        return v * s;
    }
 
    // TODO should divide by the scalar type.
    GfVec3h &operator/=(double s) {
        // TODO This should not multiply by 1/s, it should do the division.
        // Doing the division is more numerically stable when s is close to
        // zero.
        return *this *= (1.0 / s);
    }
    GfVec3h operator/(double s) const {
        return *this * (1.0 / s);
    }
    
    GfHalf operator*(GfVec3h const &v) const {
        return x * v.x + y * v.y + z * v.z;
    }
 
    GfVec3h GetProjection(GfVec3h const &v) const {
        return v * (*this * v);
    }
 
    GfVec3h GetComplement(GfVec3h const &b) const {
        return *this - this->GetProjection(b);
    }
 
    GfHalf GetLengthSq() const {
        return *this * *this;
    }
 
    GfHalf GetLength() const {
        return GfSqrt(GetLengthSq());
    }
 
    GfHalf Normalize(GfHalf eps = 0.001) {
        // TODO this seems suspect...  suggest dividing by length so long as
        // length is not zero.
        GfHalf length = GetLength();
        *this /= (length > eps) ? length : eps;
        return length;
    }
 
    GfVec3h GetNormalized(GfHalf eps = 0.001) const {
        GfVec3h normalized(*this);
        normalized.Normalize(eps);
        return normalized;
    }
 
    GF_API
    static bool OrthogonalizeBasis(
        GfVec3h *tx, GfVec3h *ty, GfVec3h *tz,
        const bool normalize,
        double eps = GF_MIN_ORTHO_TOLERANCE);
 
    GF_API
    void BuildOrthonormalFrame(GfVec3h *v1, GfVec3h *v2,
                               GfHalf eps = 0.001) const;
 
  
#if defined (doxygen)
    constexpr GfVec2h xy() const;
    constexpr GfVec2h xz() const;
    constexpr GfVec2h yx() const;
    constexpr GfVec2h yz() const;
    constexpr GfVec2h zx() const;
    constexpr GfVec2h zy() const;
    constexpr GfVec3h xyz() const;
    constexpr GfVec3h xzy() const;
    constexpr GfVec3h yxz() const;
    constexpr GfVec3h yzx() const;
    constexpr GfVec3h zxy() const;
    constexpr GfVec3h zyx() const;
#else // !doxygen
    // Note that these are templated on their own return type so that the
    // declarations cost nothing in compile time & debug info unless they are
    // actually called in a TU.  Naming a different type is an error and
    // static_assert()ed against.
    template <class Vec = GfVec2h> constexpr Vec xy() const;
    template <class Vec = GfVec2h> constexpr Vec xz() const;
    template <class Vec = GfVec2h> constexpr Vec yx() const;
    template <class Vec = GfVec2h> constexpr Vec yz() const;
    template <class Vec = GfVec2h> constexpr Vec zx() const;
    template <class Vec = GfVec2h> constexpr Vec zy() const;
    template <class Vec = GfVec3h> constexpr Vec xyz() const;
    template <class Vec = GfVec3h> constexpr Vec xzy() const;
    template <class Vec = GfVec3h> constexpr Vec yxz() const;
    template <class Vec = GfVec3h> constexpr Vec yzx() const;
    template <class Vec = GfVec3h> constexpr Vec zxy() const;
    template <class Vec = GfVec3h> constexpr Vec zyx() const;
#endif // doxygen
 };
 
GF_API std::ostream& operator<<(std::ostream &, GfVec3h const &);
 
PXR_NAMESPACE_CLOSE_SCOPE
 
// Other scalar types of the same dimension, for the conversions above.
#include "pxr/base/gf/vec3d.h"
#include "pxr/base/gf/vec3f.h"
#include "pxr/base/gf/vec3i.h"
// Lower dimensions of the same scalar type, for the swizzles above.  Note that
// lower dimensions never include higher ones, so this introduces no cycle.
#include "pxr/base/gf/vec2h.h"
 
PXR_NAMESPACE_OPEN_SCOPE
 
inline
GfVec3h::GfVec3h(class GfVec3d const &other)
{
    x = other.x;
    y = other.y;
    z = other.z;
}
inline
GfVec3h::GfVec3h(class GfVec3f const &other)
{
    x = other.x;
    y = other.y;
    z = other.z;
}
inline
GfVec3h::GfVec3h(class GfVec3i const &other)
{
    x = other.x;
    y = other.y;
    z = other.z;
}
 
template <class Vec>
constexpr Vec
GfVec3h::xy() const
{
    static_assert(std::is_same<Vec, GfVec2h>::value);
    return Vec(x, y);
}
 
template <class Vec>
constexpr Vec
GfVec3h::xz() const
{
    static_assert(std::is_same<Vec, GfVec2h>::value);
    return Vec(x, z);
}
 
template <class Vec>
constexpr Vec
GfVec3h::yx() const
{
    static_assert(std::is_same<Vec, GfVec2h>::value);
    return Vec(y, x);
}
 
template <class Vec>
constexpr Vec
GfVec3h::yz() const
{
    static_assert(std::is_same<Vec, GfVec2h>::value);
    return Vec(y, z);
}
 
template <class Vec>
constexpr Vec
GfVec3h::zx() const
{
    static_assert(std::is_same<Vec, GfVec2h>::value);
    return Vec(z, x);
}
 
template <class Vec>
constexpr Vec
GfVec3h::zy() const
{
    static_assert(std::is_same<Vec, GfVec2h>::value);
    return Vec(z, y);
}
 
template <class Vec>
constexpr Vec
GfVec3h::xyz() const
{
    static_assert(std::is_same<Vec, GfVec3h>::value);
    return Vec(x, y, z);
}
 
template <class Vec>
constexpr Vec
GfVec3h::xzy() const
{
    static_assert(std::is_same<Vec, GfVec3h>::value);
    return Vec(x, z, y);
}
 
template <class Vec>
constexpr Vec
GfVec3h::yxz() const
{
    static_assert(std::is_same<Vec, GfVec3h>::value);
    return Vec(y, x, z);
}
 
template <class Vec>
constexpr Vec
GfVec3h::yzx() const
{
    static_assert(std::is_same<Vec, GfVec3h>::value);
    return Vec(y, z, x);
}
 
template <class Vec>
constexpr Vec
GfVec3h::zxy() const
{
    static_assert(std::is_same<Vec, GfVec3h>::value);
    return Vec(z, x, y);
}
 
template <class Vec>
constexpr Vec
GfVec3h::zyx() const
{
    static_assert(std::is_same<Vec, GfVec3h>::value);
    return Vec(z, y, x);
}
 
 
inline GfVec3h
GfCompMult(GfVec3h const &v1, GfVec3h const &v2) {
    return GfVec3h(
        v1.x * v2.x,
        v1.y * v2.y,
        v1.z * v2.z
        );
}
 
inline GfVec3h
GfCompDiv(GfVec3h const &v1, GfVec3h const &v2) {
    return GfVec3h(
        v1.x / v2.x,
        v1.y / v2.y,
        v1.z / v2.z
        );
}
 
inline GfHalf
GfDot(GfVec3h const &v1, GfVec3h const &v2) {
    return v1 * v2;
}
 
 
inline GfHalf
GfGetLength(GfVec3h const &v)
{
    return v.GetLength();
}
 
inline GfHalf
GfNormalize(GfVec3h *v, GfHalf eps = 0.001)
{
    return v->Normalize(eps);
}
 
inline GfVec3h
GfGetNormalized(GfVec3h const &v, GfHalf eps = 0.001)
{
    return v.GetNormalized(eps);
}
 
inline GfVec3h
GfGetProjection(GfVec3h const &a, GfVec3h const &b)
{
    return a.GetProjection(b);
}
 
inline GfVec3h
GfGetComplement(GfVec3h const &a, GfVec3h const &b)
{
    return a.GetComplement(b);
}
 
inline bool
GfIsClose(GfVec3h const &v1, GfVec3h const &v2, double tolerance)
{
    GfVec3h delta = v1 - v2;
    return delta.GetLengthSq() <= tolerance * tolerance;
}
 
 
GF_API bool
GfOrthogonalizeBasis(GfVec3h *tx, GfVec3h *ty, GfVec3h *tz,
                     bool normalize, double eps = GF_MIN_ORTHO_TOLERANCE);
 
GF_API void
GfBuildOrthonormalFrame(GfVec3h const &v0,
                        GfVec3h* v1,
                        GfVec3h* v2,
                        GfHalf eps = 0.001);
 
inline GfVec3h
GfCross(GfVec3h const &v1, GfVec3h const &v2)
{
    return GfVec3h(
        v1.y * v2.z - v1.z * v2.y,
        v1.z * v2.x - v1.x * v2.z,
        v1.x * v2.y - v1.y * v2.x);
}
 
inline GfVec3h
operator^(GfVec3h const &v1, GfVec3h const &v2)
{
    return GfCross(v1, v2);
}
 
GF_API GfVec3h
GfSlerp(double alpha, GfVec3h const &v0, GfVec3h const &v1);
 
 
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif // PXR_BASE_GF_VEC3H_H