diff options
Diffstat (limited to 'src/include/glm/gtx/vector_query.inl')
| -rw-r--r-- | src/include/glm/gtx/vector_query.inl | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/include/glm/gtx/vector_query.inl b/src/include/glm/gtx/vector_query.inl new file mode 100644 index 0000000..8e1b62b --- /dev/null +++ b/src/include/glm/gtx/vector_query.inl @@ -0,0 +1,154 @@ +/// @ref gtx_vector_query
+
+#include <cassert>
+
+namespace glm{
+namespace detail
+{
+ template<length_t L, typename T, qualifier Q>
+ struct compute_areCollinear{};
+
+ template<typename T, qualifier Q>
+ struct compute_areCollinear<2, T, Q>
+ {
+ GLM_FUNC_QUALIFIER static bool call(vec<2, T, Q> const& v0, vec<2, T, Q> const& v1, T const& epsilon)
+ {
+ return length(cross(vec<3, T, Q>(v0, static_cast<T>(0)), vec<3, T, Q>(v1, static_cast<T>(0)))) < epsilon;
+ }
+ };
+
+ template<typename T, qualifier Q>
+ struct compute_areCollinear<3, T, Q>
+ {
+ GLM_FUNC_QUALIFIER static bool call(vec<3, T, Q> const& v0, vec<3, T, Q> const& v1, T const& epsilon)
+ {
+ return length(cross(v0, v1)) < epsilon;
+ }
+ };
+
+ template<typename T, qualifier Q>
+ struct compute_areCollinear<4, T, Q>
+ {
+ GLM_FUNC_QUALIFIER static bool call(vec<4, T, Q> const& v0, vec<4, T, Q> const& v1, T const& epsilon)
+ {
+ return length(cross(vec<3, T, Q>(v0), vec<3, T, Q>(v1))) < epsilon;
+ }
+ };
+
+ template<length_t L, typename T, qualifier Q>
+ struct compute_isCompNull{};
+
+ template<typename T, qualifier Q>
+ struct compute_isCompNull<2, T, Q>
+ {
+ GLM_FUNC_QUALIFIER static vec<2, bool, Q> call(vec<2, T, Q> const& v, T const& epsilon)
+ {
+ return vec<2, bool, Q>(
+ (abs(v.x) < epsilon),
+ (abs(v.y) < epsilon));
+ }
+ };
+
+ template<typename T, qualifier Q>
+ struct compute_isCompNull<3, T, Q>
+ {
+ GLM_FUNC_QUALIFIER static vec<3, bool, Q> call(vec<3, T, Q> const& v, T const& epsilon)
+ {
+ return vec<3, bool, Q>(
+ (abs(v.x) < epsilon),
+ (abs(v.y) < epsilon),
+ (abs(v.z) < epsilon));
+ }
+ };
+
+ template<typename T, qualifier Q>
+ struct compute_isCompNull<4, T, Q>
+ {
+ GLM_FUNC_QUALIFIER static vec<4, bool, Q> call(vec<4, T, Q> const& v, T const& epsilon)
+ {
+ return vec<4, bool, Q>(
+ (abs(v.x) < epsilon),
+ (abs(v.y) < epsilon),
+ (abs(v.z) < epsilon),
+ (abs(v.w) < epsilon));
+ }
+ };
+
+}//namespace detail
+
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER bool areCollinear(vec<L, T, Q> const& v0, vec<L, T, Q> const& v1, T const& epsilon)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'areCollinear' only accept floating-point inputs");
+
+ return detail::compute_areCollinear<L, T, Q>::call(v0, v1, epsilon);
+ }
+
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER bool areOrthogonal(vec<L, T, Q> const& v0, vec<L, T, Q> const& v1, T const& epsilon)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'areOrthogonal' only accept floating-point inputs");
+
+ return abs(dot(v0, v1)) <= max(
+ static_cast<T>(1),
+ length(v0)) * max(static_cast<T>(1), length(v1)) * epsilon;
+ }
+
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER bool isNormalized(vec<L, T, Q> const& v, T const& epsilon)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'isNormalized' only accept floating-point inputs");
+
+ return abs(length(v) - static_cast<T>(1)) <= static_cast<T>(2) * epsilon;
+ }
+
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER bool isNull(vec<L, T, Q> const& v, T const& epsilon)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'isNull' only accept floating-point inputs");
+
+ return length(v) <= epsilon;
+ }
+
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<L, bool, Q> isCompNull(vec<L, T, Q> const& v, T const& epsilon)
+ {
+ GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'isCompNull' only accept floating-point inputs");
+
+ return detail::compute_isCompNull<L, T, Q>::call(v, epsilon);
+ }
+
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<2, bool, Q> isCompNull(vec<2, T, Q> const& v, T const& epsilon)
+ {
+ return vec<2, bool, Q>(
+ abs(v.x) < epsilon,
+ abs(v.y) < epsilon);
+ }
+
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<3, bool, Q> isCompNull(vec<3, T, Q> const& v, T const& epsilon)
+ {
+ return vec<3, bool, Q>(
+ abs(v.x) < epsilon,
+ abs(v.y) < epsilon,
+ abs(v.z) < epsilon);
+ }
+
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<4, bool, Q> isCompNull(vec<4, T, Q> const& v, T const& epsilon)
+ {
+ return vec<4, bool, Q>(
+ abs(v.x) < epsilon,
+ abs(v.y) < epsilon,
+ abs(v.z) < epsilon,
+ abs(v.w) < epsilon);
+ }
+
+ template<length_t L, typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER bool areOrthonormal(vec<L, T, Q> const& v0, vec<L, T, Q> const& v1, T const& epsilon)
+ {
+ return isNormalized(v0, epsilon) && isNormalized(v1, epsilon) && (abs(dot(v0, v1)) <= epsilon);
+ }
+
+}//namespace glm
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