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author | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2021-06-22 02:38:30 +0200 |
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committer | GitHub <noreply@github.com> | 2021-06-22 02:38:30 +0200 |
commit | ca7bcf9f7dc5eb47ccbec1049b323f0604dabadd (patch) | |
tree | 33d7d2673ba0da8a92323b07d061f655c719ae40 /external/include/glm/gtx/intersect.inl | |
parent | Merge pull request #44 from LaG1924/fix/protocol_support (diff) | |
parent | Updated build instructions and added MacOS #49 (diff) | |
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Diffstat (limited to 'external/include/glm/gtx/intersect.inl')
-rw-r--r-- | external/include/glm/gtx/intersect.inl | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/external/include/glm/gtx/intersect.inl b/external/include/glm/gtx/intersect.inl deleted file mode 100644 index d10d65b..0000000 --- a/external/include/glm/gtx/intersect.inl +++ /dev/null @@ -1,225 +0,0 @@ -/// @ref gtx_intersect -/// @file glm/gtx/intersect.inl - -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 T, qualifier Q> - GLM_FUNC_QUALIFIER bool intersectRayTriangle - ( - vec<3, T, Q> const& orig, vec<3, T, Q> const& dir, - vec<3, T, Q> const& vert0, vec<3, T, Q> const& vert1, vec<3, T, Q> const& vert2, - vec<2, T, Q>& baryPosition, T& distance - ) - { - // find vectors for two edges sharing vert0 - vec<3, T, Q> const edge1 = vert1 - vert0; - vec<3, T, Q> const edge2 = vert2 - vert0; - - // begin calculating determinant - also used to calculate U parameter - vec<3, T, Q> const p = glm::cross(dir, edge2); - - // if determinant is near zero, ray lies in plane of triangle - T const det = glm::dot(edge1, p); - - vec<3, T, Q> qvec; - - if(det > std::numeric_limits<T>::epsilon()) - { - // calculate distance from vert0 to ray origin - vec<3, T, Q> const tvec = orig - vert0; - - // calculate U parameter and test bounds - baryPosition.x = glm::dot(tvec, p); - if(baryPosition.x < static_cast<T>(0) || baryPosition.x > det) - return false; - - // prepare to test V parameter - qvec = glm::cross(tvec, edge1); - - // calculate V parameter and test bounds - baryPosition.y = glm::dot(dir, qvec); - if((baryPosition.y < static_cast<T>(0)) || ((baryPosition.x + baryPosition.y) > det)) - return false; - } - else if(det < -std::numeric_limits<T>::epsilon()) - { - // calculate distance from vert0 to ray origin - vec<3, T, Q> const tvec = orig - vert0; - - // calculate U parameter and test bounds - baryPosition.x = glm::dot(tvec, p); - if((baryPosition.x > static_cast<T>(0)) || (baryPosition.x < det)) - return false; - - // prepare to test V parameter - qvec = glm::cross(tvec, edge1); - - // calculate V parameter and test bounds - baryPosition.y = glm::dot(dir, qvec); - if((baryPosition.y > static_cast<T>(0)) || (baryPosition.x + baryPosition.y < det)) - return false; - } - else - return false; // ray is parallel to the plane of the triangle - - T inv_det = static_cast<T>(1) / det; - - // calculate distance, ray intersects triangle - distance = glm::dot(edge2, qvec) * inv_det; - baryPosition *= inv_det; - - return true; - } - -/* - typename genType::value_type Epsilon = std::numeric_limits<typename genType::value_type>::epsilon(); - if(a < Epsilon && a > -Epsilon) - return false; - - typename genType::value_type f = typename genType::value_type(1.0f) / a; - - genType s = orig - v0; - baryPosition.x = f * glm::dot(s, p); - if(baryPosition.x < typename genType::value_type(0.0f)) - return false; - if(baryPosition.x > typename genType::value_type(1.0f)) - return false; - - genType q = glm::cross(s, e1); - baryPosition.y = f * glm::dot(dir, q); - if(baryPosition.y < typename genType::value_type(0.0f)) - return false; - if(baryPosition.y + baryPosition.x > typename genType::value_type(1.0f)) - return false; - - baryPosition.z = f * glm::dot(e2, q); - - return baryPosition.z >= typename genType::value_type(0.0f); - } -*/ - - template<typename genType> - GLM_FUNC_QUALIFIER bool intersectLineTriangle - ( - genType const& orig, genType const& dir, - genType const& vert0, genType const& vert1, genType const& vert2, - genType & position - ) - { - typename genType::value_type Epsilon = std::numeric_limits<typename genType::value_type>::epsilon(); - - genType edge1 = vert1 - vert0; - genType edge2 = vert2 - vert0; - - genType pvec = cross(dir, edge2); - - float det = dot(edge1, pvec); - - if (det > -Epsilon && det < Epsilon) - return false; - float inv_det = typename genType::value_type(1) / det; - - genType tvec = orig - vert0; - - position.y = dot(tvec, pvec) * inv_det; - if (position.y < typename genType::value_type(0) || position.y > typename genType::value_type(1)) - return false; - - genType qvec = cross(tvec, edge1); - - position.z = dot(dir, qvec) * inv_det; - if (position.z < typename genType::value_type(0) || position.y + position.z > typename genType::value_type(1)) - return false; - - position.x = dot(edge2, qvec) * inv_det; - - return true; - } - - template<typename genType> - GLM_FUNC_QUALIFIER bool intersectRaySphere - ( - genType const& rayStarting, genType const& rayNormalizedDirection, - genType const& sphereCenter, const typename genType::value_type sphereRadiusSquered, - typename genType::value_type & intersectionDistance - ) - { - typename genType::value_type Epsilon = std::numeric_limits<typename genType::value_type>::epsilon(); - genType diff = sphereCenter - rayStarting; - typename genType::value_type t0 = dot(diff, rayNormalizedDirection); - typename genType::value_type dSquared = dot(diff, diff) - t0 * t0; - if( dSquared > sphereRadiusSquered ) - { - return false; - } - typename genType::value_type t1 = sqrt( sphereRadiusSquered - dSquared ); - intersectionDistance = t0 > t1 + Epsilon ? t0 - t1 : t0 + t1; - return intersectionDistance > Epsilon; - } - - template<typename genType> - GLM_FUNC_QUALIFIER bool intersectRaySphere - ( - genType const& rayStarting, genType const& rayNormalizedDirection, - genType const& sphereCenter, const typename genType::value_type sphereRadius, - genType & intersectionPosition, genType & intersectionNormal - ) - { - typename genType::value_type distance; - if( intersectRaySphere( rayStarting, rayNormalizedDirection, sphereCenter, sphereRadius * sphereRadius, distance ) ) - { - intersectionPosition = rayStarting + rayNormalizedDirection * distance; - intersectionNormal = (intersectionPosition - sphereCenter) / sphereRadius; - return true; - } - return false; - } - - template<typename genType> - GLM_FUNC_QUALIFIER bool intersectLineSphere - ( - genType const& point0, genType const& point1, - genType const& sphereCenter, typename genType::value_type sphereRadius, - genType & intersectionPoint1, genType & intersectionNormal1, - genType & intersectionPoint2, genType & intersectionNormal2 - ) - { - typename genType::value_type Epsilon = std::numeric_limits<typename genType::value_type>::epsilon(); - genType dir = normalize(point1 - point0); - genType diff = sphereCenter - point0; - typename genType::value_type t0 = dot(diff, dir); - typename genType::value_type dSquared = dot(diff, diff) - t0 * t0; - if( dSquared > sphereRadius * sphereRadius ) - { - return false; - } - typename genType::value_type t1 = sqrt( sphereRadius * sphereRadius - dSquared ); - if( t0 < t1 + Epsilon ) - t1 = -t1; - intersectionPoint1 = point0 + dir * (t0 - t1); - intersectionNormal1 = (intersectionPoint1 - sphereCenter) / sphereRadius; - intersectionPoint2 = point0 + dir * (t0 + t1); - intersectionNormal2 = (intersectionPoint2 - sphereCenter) / sphereRadius; - return true; - } -}//namespace glm |