CS计算机代考程序代写 ///////////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 – 2015 G-Truc Creation (www.g-truc.net)
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the “Software”), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// Restrictions:
/// By making use of the Software for military purposes, you choose to make
/// a Bunny unhappy.
///
/// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE.
///
/// @ref gtx_vector_query
/// @file glm/gtx/vector_query.inl
/// @date 2008-03-10 / 2011-06-07
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////

#include

namespace glm{
namespace detail
{
template class vecType>
struct compute_areCollinear{};

template
struct compute_areCollinear
{
GLM_FUNC_QUALIFIER static bool call(tvec2 const & v0, tvec2 const & v1, T const & epsilon)
{
return length(cross(tvec3(v0, static_cast(0)), tvec3(v1, static_cast(0)))) < epsilon; } }; template
struct compute_areCollinear
{
GLM_FUNC_QUALIFIER static bool call(tvec3 const & v0, tvec3 const & v1, T const & epsilon)
{
return length(cross(v0, v1)) < epsilon; } }; template
struct compute_areCollinear
{
GLM_FUNC_QUALIFIER static bool call(tvec4 const & v0, tvec4 const & v1, T const & epsilon)
{
return length(cross(tvec3(v0), tvec3(v1))) < epsilon; } }; template class vecType>
struct compute_isCompNull{};

template
struct compute_isCompNull
{
GLM_FUNC_QUALIFIER static tvec2 call(tvec2 const & v, T const & epsilon)
{
return tvec2(
(abs(v.x) < epsilon), (abs(v.y) < epsilon)); } }; template
struct compute_isCompNull
{
GLM_FUNC_QUALIFIER static tvec3 call(tvec3 const & v, T const & epsilon)
{
return tvec3(
(abs(v.x) < epsilon), (abs(v.y) < epsilon), (abs(v.z) < epsilon)); } }; template
struct compute_isCompNull
{
GLM_FUNC_QUALIFIER static tvec4 call(tvec4 const & v, T const & epsilon)
{
return tvec4(
(abs(v.x) < epsilon), (abs(v.y) < epsilon), (abs(v.z) < epsilon), (abs(v.w) < epsilon)); } }; }//namespace detail template class vecType>
GLM_FUNC_QUALIFIER bool areCollinear
(
vecType const & v0,
vecType const & v1,
T const & epsilon
)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘areCollinear’ only accept floating-point inputs”);

return detail::compute_areCollinear::call(v0, v1, epsilon);
}

template class vecType>
GLM_FUNC_QUALIFIER bool areOrthogonal
(
vecType const & v0,
vecType const & v1,
T const & epsilon
)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘areOrthogonal’ only accept floating-point inputs”);

return abs(dot(v0, v1)) <= max( static_cast(1),
length(v0)) * max(static_cast(1), length(v1)) * epsilon;
}

template class vecType>
GLM_FUNC_QUALIFIER bool isNormalized
(
vecType const & v,
T const & epsilon
)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘isNormalized’ only accept floating-point inputs”);

return abs(length(v) – static_cast(1)) <= static_cast(2) * epsilon;
}

template class vecType>
GLM_FUNC_QUALIFIER bool isNull
(
vecType const & v,
T const & epsilon
)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘isNull’ only accept floating-point inputs”);

return length(v) <= epsilon; } template class vecType>
GLM_FUNC_QUALIFIER vecType isCompNull
(
vecType const & v,
T const & epsilon
)
{
GLM_STATIC_ASSERT(std::numeric_limits::is_iec559, “‘isCompNull’ only accept floating-point inputs”);

return detail::compute_isCompNull::call(v, epsilon);
}

template
GLM_FUNC_QUALIFIER tvec2 isCompNull
(
tvec2 const & v,
T const & epsilon)
{
return tvec2(
abs(v.x) < epsilon, abs(v.y) < epsilon); } template
GLM_FUNC_QUALIFIER tvec3 isCompNull
(
tvec3 const & v,
T const & epsilon
)
{
return tvec3(
abs(v.x) < epsilon, abs(v.y) < epsilon, abs(v.z) < epsilon); } template
GLM_FUNC_QUALIFIER tvec4 isCompNull
(
tvec4 const & v,
T const & epsilon
)
{
return tvec4(
abs(v.x) < epsilon, abs(v.y) < epsilon, abs(v.z) < epsilon, abs(v.w) < epsilon); } template class vecType>
GLM_FUNC_QUALIFIER bool areOrthonormal
(
vecType const & v0,
vecType const & v1,
T const & epsilon
)
{
return isNormalized(v0, epsilon) && isNormalized(v1, epsilon) && (abs(dot(v0, v1)) <= epsilon); } }//namespace glm