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//! Basic properties of bicycle car.

/// Structure to hold car motion.
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct Motion {
    pub speed: f64,
    pub steer: f64,
}

impl Motion {
    pub fn new(speed: f64, steer: f64) -> Motion {
        Motion {speed, steer}
    }

    /// Return default motion.
    ///
    ///
    /// Examples
    /// ========
    ///
    /// ```
    /// let m = bcar::Motion::default();
    /// assert_eq!(m, bcar::Motion::new(0.0, 0.0));
    /// ```
    pub fn default() -> Motion {
        Motion {speed: 0.0, steer: 0.0}
    }
}

/// Structure to hold car dimensions.
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct Size {
    pub curb_to_curb: f64,
    pub width: f64, // width
    pub wheelbase: f64, // wheelbase
    pub distance_to_front: f64, // from the rear axle center
    pub length: f64,
}

impl Size {
    pub fn new(
        curb_to_curb: f64,
        width: f64,
        wheelbase: f64,
        distance_to_front: f64,
        length: f64,
    ) -> Size {
        Size {
            curb_to_curb,
            width,
            wheelbase,
            distance_to_front,
            length,
        }
    }

    /// Return default size.
    ///
    /// Default size is based on [Porsche Panamera 971 dimensions](https://www.porsche.com/international/models/panamera/panamera-turbo-models/panamera-turbo/featuresandspecs/).
    ///
    ///
    /// Examples
    /// ========
    ///
    /// ```
    /// let s = bcar::Size::default();
    /// assert_eq!(s, bcar::Size::new(11.8872, 2.165, 2.950, 3.9865, 5.049));
    /// ```
    pub fn default() -> Size {
        Size {
            curb_to_curb: 11.8872,
            width: 2.165,
            wheelbase: 2.950,
            distance_to_front: 3.9865,
            length: 5.049,
        }
    }
}