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Merge branch '0.9.5' of https://github.com/g-truc/glm into 0.9.5

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Christophe Riccio 2014-01-11 16:44:34 +01:00
commit f2bce9c8fa
2 changed files with 29 additions and 0 deletions
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9
glm/gtx/intersect.hpp
View file

@ -52,6 +52,15 @@ namespace glm
/// @addtogroup gtx_intersect
/// @{
//! Compute the intersection of a ray and a triangle.
//! Ray direction and plane normal must be unit length.
//! From GLM_GTX_intersect extension.
template <typename genType>
bool intersectRayPlane(
genType const & orig, genType const & dir,
genType const & planeOrig, genType const & planeNormal,
typename genType::value_type & intersectionDistance);
//! Compute the intersection of a ray and a triangle.
//! From GLM_GTX_intersect extension.
template <typename genType>

20
glm/gtx/intersect.inl
View file

@ -13,6 +13,26 @@
namespace glm
{
template <typename genType>
GLM_FUNC_QUALIFIER bool intersectRayPlane
(
genType const & orig, genType const & dir,
genType const & planeOrig, genType const & planeNormal,
typename genType::value_type & intersectionDistance
)
{
typename genType::value_type d = glm::dot(dir, planeNormal);
typename genType::value_type Epsilon = std::numeric_limits<typename genType::value_type>::epsilon();
if(d < Epsilon)
{
intersectionDistance = glm::dot(planeOrig - orig, planeNormal) / d;
return true;
}
return false;
}
template <typename genType>
GLM_FUNC_QUALIFIER bool intersectRayTriangle
(