C++ (Cpp) graphene_quaternion_init_from_euler Examples

Example #1

File: graphene-euler.c Project: endlessm/graphene

/**
 * graphene_euler_reorder:
 * @e: a #graphene_euler_t
 * @order: the new order
 * @res: (out caller-allocates): return location for the reordered
 *   #graphene_euler_t
 *
 * Reorders a #graphene_euler_t using @order.
 *
 * This function is equivalent to creating a #graphene_quaternion_t from the
 * given #graphene_euler_t, and then converting the quaternion into another
 * #graphene_euler_t.
 *
 * Since: 1.2
 */
void
graphene_euler_reorder (const graphene_euler_t *e,
                        graphene_euler_order_t  order,
                        graphene_euler_t       *res)
{
  graphene_quaternion_t q;

  graphene_quaternion_init_from_euler (&q, e);
  graphene_euler_init_from_quaternion (res, &q, order);
}

Example #2

File: euler.c Project: Whitecl4ws/graphene

GRAPHENE_TEST_UNIT_END

GRAPHENE_TEST_UNIT_BEGIN (euler_quaternion_roundtrip)
{
  graphene_euler_t values[3];
  unsigned int i;

  graphene_euler_init_with_order (&values[0], 0.f, 0.f, 0.f, GRAPHENE_EULER_ORDER_XYZ);
  graphene_euler_init_with_order (&values[1], 1.f, 0.f, 0.f, GRAPHENE_EULER_ORDER_XYZ);
  graphene_euler_init_with_order (&values[2], 0.f, 1.f, 0.f, GRAPHENE_EULER_ORDER_ZYX);

  for (i = 0; i < G_N_ELEMENTS (values); i++)
    {
      graphene_quaternion_t q, check;
      graphene_euler_t e;

      graphene_quaternion_init_from_euler (&q, &values[i]);

      graphene_euler_init_from_quaternion (&e, &q, graphene_euler_get_order (&values[i]));
      graphene_quaternion_init_from_euler (&check, &e);

      g_assert_true (graphene_quaternion_equal (&q, &check));
    }
}