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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This 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 2 of the License, or (at your option) any later version.
//
// This 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 library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "GLMHelper.h"
#include "StringHelper.h"
#include "MathHelper.h"
#include "../glm/gtx/rotate_vector.hpp"
using namespace std;
namespace avg {
glm::vec2 getRotated(const glm::vec2& vec, float angle)
{
return glm::rotate(vec, angle*180/PI);
}
glm::vec2 getRotatedPivot(const glm::vec2& vec, float angle, const glm::vec2& pivot)
{
// translate pivot to origin
glm::vec2 translated = vec - pivot;
// calculate rotated coordinates about the origin
glm::vec2 rotated = glm::rotate(translated, angle*180/PI);
// re-translate pivot to original position
rotated += pivot;
return rotated;
}
float getAngle(const glm::vec2& vec)
{
return float(atan2(double(vec.y), double(vec.x)));
}
glm::vec2 fromPolar(float angle, float radius)
{
return glm::vec2(cos(angle)*radius, sin(angle)*radius);
}
template<class NUM>
bool almostEqual(const glm::detail::tvec2<NUM>& v1, const glm::detail::tvec2<NUM>& v2)
{
return (fabs(v1.x-v2.x)+fabs(v1.y-v2.y)) < 0.0001;
}
template<class NUM>
bool almostEqual(const glm::detail::tvec4<NUM>& v1, const glm::detail::tvec4<NUM>& v2)
{
return (fabs(v1.x-v2.x)+fabs(v1.y-v2.y)+fabs(v1.z-v2.z)+fabs(v1.w-v2.w)) < 0.0001;
}
template<class NUM>
std::ostream& operator<<( std::ostream& os, const glm::detail::tvec2<NUM> &v)
{
os << "(" << v.x << "," << v.y << ")";
return os;
}
template<class NUM>
std::ostream& operator<<( std::ostream& os, const glm::detail::tvec3<NUM> &v)
{
os << "(" << v.x << "," << v.y << "," << v.z << ")";
return os;
}
template<class NUM>
std::ostream& operator<<( std::ostream& os, const glm::detail::tvec4<NUM> &v)
{
os << "(" << v.x << "," << v.y << "," << v.z << ", " << v.a << ")";
return os;
}
template<class NUM>
std::ostream& operator<<( std::ostream& os, const glm::detail::tmat4x4<NUM> &m)
{
os << "(" << m[0] << ", " << endl <<
m[1] << ", " << endl <<
m[2] << ", " << endl <<
m[3] << ", " << endl << ")";
return os;
}
template<class NUM>
std::istream& operator>>(std::istream& is, glm::detail::tvec2<NUM>& p)
{
skipToken(is, '(');
is >> p.x;
skipToken(is, ',');
is >> p.y;
skipToken(is, ')');
return is;
}
template<class NUM>
std::istream& operator>>(std::istream& is, glm::detail::tvec3<NUM>& p)
{
skipToken(is, '(');
is >> p.x;
skipToken(is, ',');
is >> p.y;
skipToken(is, ',');
is >> p.z;
skipToken(is, ')');
return is;
}
glm::vec2 stringToVec2(const std::string& s)
{
glm::vec2 pt;
fromString(s, pt);
return pt;
}
glm::vec3 stringToVec3(const std::string& s)
{
glm::vec3 pt;
fromString(s, pt);
return pt;
}
glm::ivec3 stringToIVec3(const std::string& s)
{
glm::ivec3 pt;
fromString(s, pt);
return pt;
}
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec2<int> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec2<float> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec2<double> &p);
template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec2<int>& p);
template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec2<float>& p);
template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec2<double>& p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec3<int> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec3<float> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec3<double> &p);
template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec3<int>& p);
template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec3<float>& p);
template AVG_TEMPLATE_API std::istream& operator>>(std::istream& is, glm::detail::tvec3<double>& p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec4<int> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec4<float> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tvec4<double> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os, const glm::detail::tmat4x4<float> &p);
template AVG_TEMPLATE_API std::ostream& operator<<(std::ostream& os,
const glm::detail::tmat4x4<double> &p);
template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec2<float>& v1,
const glm::detail::tvec2<float>& v2);
template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec2<double>& v1,
const glm::detail::tvec2<double>& v2);
template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec4<float>& v1,
const glm::detail::tvec4<float>& v2);
template AVG_TEMPLATE_API bool almostEqual(const glm::detail::tvec4<double>& v1,
const glm::detail::tvec4<double>& v2);
}
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