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//! Cartesian dimensions. /// Cartesian coordinate system. pub enum Cartesian { /// First spatial dimension. X, /// Second spatial dimension. Y, /// Third spatial dimension. Z, } /// Cartesian X convenience indexing constant. pub const X: usize = Cartesian::X as usize; /// Cartesian Y convenience indexing constant. pub const Y: usize = Cartesian::Y as usize; /// Cartesian Z convenience indexing constant. pub const Z: usize = Cartesian::Z as usize;