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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 (Vectors, Matricies, Lines (rays)).
#include <dimension.h>
namespace Dimension
{
// Wrapper for dmnsn_matrix
class Matrix
{
public:
Matrix() { }
Matrix(double a0, double a1, double a2, double a3,
double b0, double b1, double b2, double b3,
double c0, double c1, double c2, double c3,
double d0, double d1, double d2, double d3)
: m_matrix(dmnsn_matrix_construct(a0, a1, a2, a3,
b0, b1, b2, b3,
c0, c1, c2, c3,
d0, d1, d2, d3)) { }
explicit Matrix(dmnsn_matrix m) : m_matrix(m) { }
// Matrix(const Matrix& m);
// ~Matrix();
// Element access
double* operator[](unsigned int i) { return m_matrix.n[i]; }
// Matrix arithmetic
// Matrix& operator=(const Matrix& rhs);
Matrix& operator*=(const Matrix& rhs)
{ m_matrix = dmnsn_matrix_mul(rhs.m_matrix, m_matrix); return *this; }
// Get the wrapped matrix
dmnsn_matrix dmnsn() const { return m_matrix; }
private:
dmnsn_matrix m_matrix;
};
// Wrapper for dmnsn_vector
class Vector
{
public:
Vector() { }
Vector(double x, double y, double 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.
double x() const { return m_vector.x; }
double y() const { return m_vector.y; }
double 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*=(double rhs)
{ m_vector = dmnsn_vector_mul(rhs, m_vector); return *this; }
Vector& operator*=(const Matrix& m)
{ m_vector = dmnsn_matrix_vector_mul(m.dmnsn(), m_vector); return *this; }
Vector& operator/=(double 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); }
double t(const Vector& v) { return dmnsn_line_index(m_line, v.dmnsn()); }
// Line& operator=(const Line& l);
Line& operator*=(const Matrix& m)
{ m_line = dmnsn_matrix_line_mul(m.dmnsn(), m_line); return *this; }
// Get the point `t' on the line (x0 + t*n)
Vector operator()(double 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, double rhs)
{
Vector r = lhs;
r *= rhs;
return r;
}
inline Vector
operator*(double lhs, const Vector& rhs)
{
Vector r = rhs;
r *= lhs;
return r;
}
inline Vector
operator*(const Matrix& lhs, const Vector& rhs)
{
Vector r = rhs;
r *= lhs;
return r;
}
inline Vector
operator/(const Vector& lhs, double rhs)
{
Vector r = lhs;
r /= rhs;
return r;
}
// Dot product
inline double
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()));
}
// Line transformation
inline Line
operator*(const Matrix& lhs, const Line& rhs)
{
Line r = rhs;
r *= lhs;
return r;
}
}
#endif /* DIMENSIONXX_GEOMETRY_HPP */
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