Added quat left and right handed tests #703

test/gtx/gtx_quaternion.cpp

@@ -107,6 +107,18 @@ int test_quat_lookAt()
 	Error += static_cast<int>(glm::abs(glm::length(test_quat) - 1.0f) > glm::epsilon<float>());
 	Error += static_cast<int>(glm::min(glm::length(test_quat + (-test_mat)), glm::length(test_quat + test_mat)) > glm::epsilon<float>());
 
+	// Test left-handed implementation
+	glm::quat test_quatLH = glm::quatLookAtLH(glm::normalize(center - eye), up);
+	glm::quat test_matLH = glm::conjugate(glm::quat_cast(glm::lookAtLH(eye, center, up)));
+	Error += static_cast<int>(glm::abs(glm::length(test_quatLH) - 1.0f) > glm::epsilon<float>());
+	Error += static_cast<int>(glm::min(glm::length(test_quatLH - test_matLH), glm::length(test_quatLH + test_matLH)) > glm::epsilon<float>());
+ 
+	// Test right-handed implementation
+	glm::quat test_quatRH = glm::quatLookAtRH(glm::normalize(center - eye), up);
+	glm::quat test_matRH = glm::conjugate(glm::quat_cast(glm::lookAtRH(eye, center, up)));
+	Error += static_cast<int>(glm::abs(glm::length(test_quatRH) - 1.0f) > glm::epsilon<float>());
+	Error += static_cast<int>(glm::min(glm::length(test_quatRH - test_matRH), glm::length(test_quatRH + test_matRH)) > glm::epsilon<float>());
+
 	return Error;
 }