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/*************************************************************************
* Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library is distributed in the hope that it will be *
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
#ifndef DIMENSIONXX_GEOMETRY_HPP
#define DIMENSIONXX_GEOMETRY_HPP
// Wrappers for geometric types (Scalars, Vectors, Lines (rays)).
#include <dimension.h>
namespace Dimension
{
typedef dmnsn_scalar Scalar; // This is really `double'
// Wrapper for dmnsn_vector
class Vector
{
public:
Vector() { }
Vector(Scalar x, Scalar y, Scalar z)
: m_vector(dmnsn_vector_construct(x, y, z)) { }
explicit Vector(dmnsn_vector v) : m_vector(v) { }
// Vector(const Vector& v);
// ~Vector();
// Get the x, y, and z components.
Scalar x() const { return m_vector.x; }
Scalar y() const { return m_vector.y; }
Scalar z() const { return m_vector.z; }
// Vector arithmetic
// Vector& operator=(const Vector& rhs);
Vector& operator+=(const Vector& rhs)
{ m_vector = dmnsn_vector_add(m_vector, rhs.m_vector); return *this; }
Vector& operator-=(const Vector& rhs)
{ m_vector = dmnsn_vector_sub(m_vector, rhs.m_vector); return *this; }
Vector& operator*=(Scalar rhs)
{ m_vector = dmnsn_vector_mul(rhs, m_vector); return *this; }
Vector& operator/=(Scalar rhs)
{ m_vector = dmnsn_vector_div(m_vector, rhs); return *this; }
// Get the wrapped vector
dmnsn_vector dmnsn() const { return m_vector; }
private:
dmnsn_vector m_vector;
};
// Wrapper for dmnsn_line
class line
{
public:
line() { }
line(const Vector& x0, const Vector& n)
{ m_line.x0 = x0.dmnsn(); m_line.n = n.dmnsn(); }
// line(const line& l);
// ~line();
Vector x0() const { return Vector(m_line.x0); }
Vector n() const { return Vector(m_line.n); }
// line& operator=(const line& l);
// Get the point `t' on the line (x0 + t*n)
Vector operator()(Scalar t) { return Vector(dmnsn_line_point(m_line, t)); }
// Get the wrapped line
dmnsn_line dmnsn() const { return m_line; }
private:
dmnsn_line m_line;
};
// Vector operators
inline Vector
operator+(const Vector& lhs, const Vector& rhs)
{
Vector r = lhs;
r += rhs;
return r;
}
inline Vector
operator-(const Vector& lhs, const Vector& rhs)
{
Vector r = lhs;
r -= rhs;
return r;
}
inline Vector
operator*(const Vector& lhs, Scalar rhs)
{
Vector r = lhs;
r *= rhs;
return r;
}
inline Vector
operator*(Scalar lhs, const Vector& rhs)
{
Vector r = rhs;
r *= lhs;
return r;
}
inline Vector
operator/(const Vector& lhs, Scalar rhs)
{
Vector r = lhs;
r /= rhs;
return r;
}
// Dot product
inline Scalar
dot(const Vector& lhs, const Vector& rhs)
{
return dmnsn_vector_dot(lhs.dmnsn(), rhs.dmnsn());
}
// Cross product
inline Vector
cross(const Vector& lhs, const Vector& rhs)
{
return Vector(dmnsn_vector_cross(lhs.dmnsn(), rhs.dmnsn()));
}
}
#endif /* DIMENSIONXX_GEOMETRY_HPP */
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