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Diffstat (limited to 'src/glm/gtx/vector_query.inl')
| -rw-r--r-- | src/glm/gtx/vector_query.inl | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/glm/gtx/vector_query.inl b/src/glm/gtx/vector_query.inl new file mode 100644 index 0000000..da96556 --- /dev/null +++ b/src/glm/gtx/vector_query.inl @@ -0,0 +1,174 @@ +///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2007-03-05
+// Updated : 2010-02-16
+// Licence : This source is under MIT License
+// File : glm/gtx/vector_query.inl
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <cassert>
+
+namespace glm{
+namespace gtx{
+namespace vector_query
+{
+ template <typename T>
+ GLM_FUNC_QUALIFIER bool areCollinear
+ (
+ detail::tvec2<T> const & v0,
+ detail::tvec2<T> const & v1,
+ T const & epsilon
+ )
+ {
+ return length(cross(detail::tvec3<T>(v0, T(0)), detail::tvec3<T>(v1, T(0)))) < epsilon;
+ }
+
+ template <typename T>
+ GLM_FUNC_QUALIFIER bool areCollinear
+ (
+ detail::tvec3<T> const & v0,
+ detail::tvec3<T> const & v1,
+ T const & epsilon
+ )
+ {
+ return length(cross(v0, v1)) < epsilon;
+ }
+
+ template <typename T>
+ GLM_FUNC_QUALIFIER bool areCollinear
+ (
+ detail::tvec4<T> const & v0,
+ detail::tvec4<T> const & v1,
+ T const & epsilon
+ )
+ {
+ return length(cross(detail::tvec3<T>(v0), detail::tvec3<T>(v1))) < epsilon;
+ }
+
+ template <typename genType>
+ GLM_FUNC_QUALIFIER bool areOpposite
+ (
+ genType const & v0,
+ genType const & v1,
+ typename genType::value_type const & epsilon
+ )
+ {
+ assert(isNormalized(v0) && isNormalized(v1));
+ return((typename genType::value_type(1) + dot(v0, v1)) <= epsilon);
+ }
+
+ template <typename genType>
+ GLM_FUNC_QUALIFIER bool areOrthogonal
+ (
+ genType const & v0,
+ genType const & v1,
+ typename genType::value_type const & epsilon
+ )
+ {
+ return abs(dot(v0, v1)) <= max(
+ typename genType::value_type(1),
+ length(v0)) * max(
+ typename genType::value_type(1),
+ length(v1)) * epsilon;
+ }
+
+ template <typename genType>
+ GLM_FUNC_QUALIFIER bool isNormalized
+ (
+ genType const & v,
+ typename genType::value_type const & epsilon
+ )
+ {
+ return abs(length(v) - typename genType::value_type(1)) <= typename genType::value_type(2) * epsilon;
+ }
+
+ template <typename genType>
+ GLM_FUNC_QUALIFIER bool isNull
+ (
+ genType const & v,
+ typename genType::value_type const & epsilon
+ )
+ {
+ return length(v) <= epsilon;
+ }
+
+ template <typename T>
+ GLM_FUNC_QUALIFIER bool isCompNull
+ (
+ T const & s,
+ T const & epsilon
+ )
+ {
+ return abs(s) < epsilon;
+ }
+
+ template <typename T>
+ GLM_FUNC_QUALIFIER detail::tvec2<bool> isCompNull
+ (
+ detail::tvec2<T> const & v,
+ T const & epsilon)
+ {
+ return detail::tvec2<bool>(
+ (abs(v.x) < epsilon),
+ (abs(v.y) < epsilon));
+ }
+
+ template <typename T>
+ GLM_FUNC_QUALIFIER detail::tvec3<bool> isCompNull
+ (
+ detail::tvec3<T> const & v,
+ T const & epsilon
+ )
+ {
+ return detail::tvec3<bool>(
+ abs(v.x) < epsilon,
+ abs(v.y) < epsilon,
+ abs(v.z) < epsilon);
+ }
+
+ template <typename T>
+ GLM_FUNC_QUALIFIER detail::tvec4<bool> isCompNull
+ (
+ detail::tvec4<T> const & v,
+ T const & epsilon
+ )
+ {
+ return detail::tvec4<bool>(
+ abs(v.x) < epsilon,
+ abs(v.y) < epsilon,
+ abs(v.z) < epsilon,
+ abs(v.w) < epsilon);
+ }
+
+ template <typename genType>
+ GLM_FUNC_QUALIFIER bool areOrthonormal
+ (
+ genType const & v0,
+ genType const & v1,
+ typename genType::value_type const & epsilon
+ )
+ {
+ return isNormalized(v0, epsilon) && isNormalized(v1, epsilon) && (abs(dot(v0, v1)) <= epsilon);
+ }
+
+ template <typename genType>
+ GLM_FUNC_QUALIFIER bool areSimilar
+ (
+ genType const & v0,
+ genType const & v1,
+ typename genType::value_type const & epsilon
+ )
+ {
+ bool similar = true;
+ for(typename genType::size_type i = 0; similar && i < genType::value_size(); i++)
+ similar = (abs(v0[i] - v1[i]) <= epsilon);
+ return similar;
+ }
+
+}//namespace vector_query
+}//namespace gtx
+}//namespace glm
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