/**
* @ingroup matrix4
* @brief Compares every element of the matrix. Uses HYP_EPSILON for precision.
* returns 1 if equal, 0 if different
*/
HYPAPI int matrix4_equals(const matrix4 *self, const matrix4 *mT)
{
unsigned char i;
for(i = 0; i < 16; i++)
{
if(scalar_equalsf(self->m[i], mT->m[i]) == 0)
{
return 0;
}
}
return 1;
}
static char * test_quaternion_get_set_axis_anglev3()
{
quaternion q;
float angle, angle1;
vector3 axis, axis1;
vector3_set(&axis, HYP_VECTOR3_UNIT_X);
angle = HYP_TAU / 4.0f;
quaternion_set_from_axis_anglev3(&q, &axis, angle);
quaternion_get_axis_anglev3(&q, &axis1, &angle1);
test_assert(vector3_equals(&axis, &axis1));
test_assert(scalar_equalsf(angle,angle1));
return 0;
}
static char *test_vector3_cross_product(void)
{
struct vector3 a;
struct vector3 b;
struct vector3 r;
vector3_setf3(&a, 3.0f, -3.0f, 1.0f);
vector3_setf3(&b, 4.0f, 9.0f, 2.0f);
vector3_cross_product(&r, &a, &b);
test_assert(scalar_equalsf(r.x, -15.0f));
test_assert(scalar_equalsf(r.y, -2.0f));
test_assert(scalar_equalsf(r.z, 39.0f));
/* tests lack of commutative property */
vector3_cross_product(&r, &b, &a);
test_assert(!scalar_equalsf(r.x, -15.0f));
test_assert(!scalar_equalsf(r.y, -2.0f));
test_assert(!scalar_equalsf(r.z, 39.0f));
return 0;
}
/**
* @ingroup quaternion
* @brief if the scalar is 0.0 (w == 0.0), then the quaternion is said to be a *pure quaternion*
*/
HYPAPI short quaternion_is_pure(quaternion *self)
{
return scalar_equalsf(self->w, 0.0f);
}
/**
* @ingroup quaternion
* @brief if the norm is 1.0, then the quaternion is said to be a *unit quaternion*
*/
HYPAPI short quaternion_is_unit(quaternion *self)
{
return (scalar_equalsf(1.0f, quaternion_norm(self)));
}
