Added vec2 cross #621

This commit is contained in:
Christophe Riccio 2017-04-08 19:37:20 +02:00
parent 96adec5f5e
commit 40398d67cd
5 changed files with 83 additions and 0 deletions

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@ -0,0 +1,40 @@
/// @ref gtx_exterior_product
/// @file glm/gtx/exterior_product.hpp
///
/// @see core (dependence)
/// @see gtx_exterior_product (dependence)
///
/// @defgroup gtx_exterior_product GLM_GTX_exterior_product
/// @ingroup gtx
///
/// @brief Allow to perform bit operations on integer values
///
/// <glm/gtc/bitfield.hpp> need to be included to use these functionalities.
#pragma once
// Dependencies
#include "../detail/setup.hpp"
#include "../detail/precision.hpp"
#if GLM_MESSAGES == GLM_MESSAGES_ENABLED && !defined(GLM_EXT_INCLUDED)
# pragma message("GLM: GLM_GTX_exterior_product extension included")
#endif
namespace glm
{
/// @addtogroup gtx_exterior_product
/// @{
/// Returns the cross product of x and y.
///
/// @tparam valType Floating-point scalar types.
///
/// @see <a href="https://en.wikipedia.org/wiki/Exterior_algebra#Cross_and_triple_products">Exterior product</a>
template<typename T, precision P>
GLM_FUNC_DECL T cross(vec<2, T, P> const& v, vec<2, T, P> const& u);
/// @}
} //namespace glm
#include "exterior_product.inl"

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/// @ref core
/// @file glm/detail/func_geometric.inl
#include <limits>
namespace glm {
namespace detail
{
template<typename T, precision P, bool Aligned>
struct compute_cross_vec2
{
GLM_FUNC_QUALIFIER static T call(vec<2, T, P> const& v, vec<2, T, P> const& u)
{
GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'cross' accepts only floating-point inputs");
return v.x * u.y - u.x * v.y;
}
};
}//namespace detail
template<typename T, precision P>
GLM_FUNC_QUALIFIER T cross(vec<2, T, P> const & x, vec<2, T, P> const & y)
{
return detail::compute_cross_vec2<T, P, detail::is_aligned<P>::value>::call(x, y);
}
}//namespace glm

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@ -56,6 +56,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
- Added RGBM encoding in GTC_packing #420
- Added GTX_color_encoding extension
- Added GTX_vec_swizzle, faster compile time swizzling then swizzle operator #558
- Added GTX_exterior_product with a vec2 cross implementation #621
- Added [GLM_ENABLE_EXPERIMENTAL](manual.md#section7_4) to enable experimental features.
#### Improvements:

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@ -9,6 +9,7 @@ glmCreateTestGTC(gtx_component_wise)
glmCreateTestGTC(gtx_euler_angle)
glmCreateTestGTC(gtx_extend)
glmCreateTestGTC(gtx_extended_min_max)
glmCreateTestGTC(gtx_exterior_product)
glmCreateTestGTC(gtx_fast_exponential)
glmCreateTestGTC(gtx_fast_square_root)
glmCreateTestGTC(gtx_fast_trigonometry)

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#include <glm/gtx/exterior_product.hpp>
#include <glm/gtc/epsilon.hpp>
#include <glm/vec2.hpp>
int main()
{
int Error = 0;
float const f = glm::cross(glm::vec2(1.0f, 1.0f), glm::vec2(1.0f, 1.0f));
Error += glm::epsilonEqual(f, 0.0f, 0.001f) ? 0 : 1;
return Error;
}