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Merge pull request #1137 from tetrisplusplus/fix_glm_gtx_matrix_query_isOrthogonal

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fix: isOrthogonal for a zero matrix #1137
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Christophe 2023-08-18 15:04:55 +02:00 committed by GitHub
commit db0f79de12
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2 changed files with 20 additions and 8 deletions
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18
glm/gtx/matrix_query.inl
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@ -97,16 +97,22 @@ namespace glm
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);
for(length_t i(0); result && i < m.length(); ++i)
{
result = isNormalized(m[i], epsilon);
for(length_t j(i + 1); result && j < m.length(); ++j)
result = abs(dot(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);
for(length_t i(0); result && i < m.length(); ++i)
{
result = isNormalized(tmp[i], epsilon);
for(length_t j(i + 1); result && j < m.length(); ++j)
result = abs(dot(tmp[i], tmp[j])) <= epsilon;
}
}
return result;
}

10
test/gtx/gtx_matrix_query.cpp
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@ -45,8 +45,14 @@ int test_isOrthogonal()
{
int Error(0);
bool TestA = glm::isOrthogonal(glm::mat4(1), 0.00001f);
Error += TestA ? 0 : 1;
{
bool TestA = glm::isOrthogonal(glm::mat4(1), 0.00001f);
Error += TestA ? 0 : 1;
}
{
bool TestA = glm::isOrthogonal(glm::mat4(0), 0.00001f);
Error += TestA ? 1 : 0;
}
return Error;
}