From a8b3118e8305fd1c668ea25e07157b625c9747ff Mon Sep 17 00:00:00 2001
From: Joursoir <chat@joursoir.net>
Date: Sat, 10 Apr 2021 17:29:02 +0000
Subject: add glm headers

---
 src/include/glm/gtx/matrix_query.inl | 113 +++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/include/glm/gtx/matrix_query.inl

(limited to 'src/include/glm/gtx/matrix_query.inl')

diff --git a/src/include/glm/gtx/matrix_query.inl b/src/include/glm/gtx/matrix_query.inl
new file mode 100644
index 0000000..e181a80
--- /dev/null
+++ b/src/include/glm/gtx/matrix_query.inl
@@ -0,0 +1,113 @@
+/// @ref gtx_matrix_query
+
+namespace glm
+{
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isNull(mat<2, 2, T, Q> const& m, T const& epsilon)
+	{
+		bool result = true;
+		for(length_t i = 0; result && i < m.length() ; ++i)
+			result = isNull(m[i], epsilon);
+		return result;
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isNull(mat<3, 3, T, Q> const& m, T const& epsilon)
+	{
+		bool result = true;
+		for(length_t i = 0; result && i < m.length() ; ++i)
+			result = isNull(m[i], epsilon);
+		return result;
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isNull(mat<4, 4, T, Q> const& m, T const& epsilon)
+	{
+		bool result = true;
+		for(length_t i = 0; result && i < m.length() ; ++i)
+			result = isNull(m[i], epsilon);
+		return result;
+	}
+
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isIdentity(mat<C, R, T, Q> const& m, T const& epsilon)
+	{
+		bool result = true;
+		for(length_t i = 0; result && i < m[0].length() ; ++i)
+		{
+			for(length_t j = 0; result && j < i ; ++j)
+				result = abs(m[i][j]) <= epsilon;
+			if(result)
+				result = abs(m[i][i] - 1) <= epsilon;
+			for(length_t j = i + 1; result && j < m.length(); ++j)
+				result = abs(m[i][j]) <= epsilon;
+		}
+		return result;
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isNormalized(mat<2, 2, T, Q> const& m, T const& epsilon)
+	{
+		bool result(true);
+		for(length_t i = 0; result && i < m.length(); ++i)
+			result = isNormalized(m[i], epsilon);
+		for(length_t i = 0; result && i < m.length(); ++i)
+		{
+			typename mat<2, 2, T, Q>::col_type v;
+			for(length_t j = 0; j < m.length(); ++j)
+				v[j] = m[j][i];
+			result = isNormalized(v, epsilon);
+		}
+		return result;
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isNormalized(mat<3, 3, T, Q> const& m, T const& epsilon)
+	{
+		bool result(true);
+		for(length_t i = 0; result && i < m.length(); ++i)
+			result = isNormalized(m[i], epsilon);
+		for(length_t i = 0; result && i < m.length(); ++i)
+		{
+			typename mat<3, 3, T, Q>::col_type v;
+			for(length_t j = 0; j < m.length(); ++j)
+				v[j] = m[j][i];
+			result = isNormalized(v, epsilon);
+		}
+		return result;
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isNormalized(mat<4, 4, T, Q> const& m, T const& epsilon)
+	{
+		bool result(true);
+		for(length_t i = 0; result && i < m.length(); ++i)
+			result = isNormalized(m[i], epsilon);
+		for(length_t i = 0; result && i < m.length(); ++i)
+		{
+			typename mat<4, 4, T, Q>::col_type v;
+			for(length_t j = 0; j < m.length(); ++j)
+				v[j] = m[j][i];
+			result = isNormalized(v, epsilon);
+		}
+		return result;
+	}
+
+	template<length_t C, length_t R, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER bool isOrthogonal(mat<C, R, T, Q> const& m, T const& epsilon)
+	{
+		bool result = true;
+		for(length_t i(0); result && i < m.length() - 1; ++i)
+		for(length_t j(i + 1); result && j < m.length(); ++j)
+			result = areOrthogonal(m[i], m[j], epsilon);
+
+		if(result)
+		{
+			mat<C, R, T, Q> tmp = transpose(m);
+			for(length_t i(0); result && i < m.length() - 1 ; ++i)
+			for(length_t j(i + 1); result && j < m.length(); ++j)
+				result = areOrthogonal(tmp[i], tmp[j], epsilon);
+		}
+		return result;
+	}
+}//namespace glm
-- 
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