Пример #1
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 public static extern SU_RESULT SURay3DDistanceTo(ref SURay3D ray, ref SUPoint3D point, ref double distance);
Пример #2
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 public static extern SU_RESULT SURay3DProjectTo(ref SURay3D ray, ref SUPoint3D point, ref SUPoint3D projected_point);
Пример #3
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 public static extern SU_RESULT SURay3DIsOn(ref SURay3D ray, ref SUPoint3D point, ref bool is_on);