// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::Matrix;
use crate::Vec3;
use crate::Vec4;
use glib::translate::*;
use std::mem;

glib::wrapper! {
    /// A quaternion.
    ///
    /// The contents of the [`Quaternion`][crate::Quaternion] structure are private
    /// and should never be accessed directly.
    pub struct Quaternion(BoxedInline<ffi::graphene_quaternion_t>);

    match fn {
        copy => |ptr| glib::gobject_ffi::g_boxed_copy(ffi::graphene_quaternion_get_type(), ptr as *mut _) as *mut ffi::graphene_quaternion_t,
        free => |ptr| glib::gobject_ffi::g_boxed_free(ffi::graphene_quaternion_get_type(), ptr as *mut _),
        type_ => || ffi::graphene_quaternion_get_type(),
    }
}

impl Quaternion {
    /// Adds two [`Quaternion`][crate::Quaternion] `self` and `b`.
    /// ## `b`
    /// a [`Quaternion`][crate::Quaternion]
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// the result of the operation
    #[doc(alias = "graphene_quaternion_add")]
    #[must_use]
    pub fn add(&self, b: &Quaternion) -> Quaternion {
        unsafe {
            let mut res = Quaternion::uninitialized();
            ffi::graphene_quaternion_add(
                self.to_glib_none().0,
                b.to_glib_none().0,
                res.to_glib_none_mut().0,
            );
            res
        }
    }

    /// Computes the dot product of two [`Quaternion`][crate::Quaternion].
    /// ## `b`
    /// a [`Quaternion`][crate::Quaternion]
    ///
    /// # Returns
    ///
    /// the value of the dot products
    #[doc(alias = "graphene_quaternion_dot")]
    pub fn dot(&self, b: &Quaternion) -> f32 {
        unsafe { ffi::graphene_quaternion_dot(self.to_glib_none().0, b.to_glib_none().0) }
    }

    #[doc(alias = "graphene_quaternion_equal")]
    fn equal(&self, b: &Quaternion) -> bool {
        unsafe { ffi::graphene_quaternion_equal(self.to_glib_none().0, b.to_glib_none().0) }
    }

    /// Inverts a [`Quaternion`][crate::Quaternion], and returns the conjugate
    /// quaternion of `self`.
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// return location for the inverted
    ///  quaternion
    #[doc(alias = "graphene_quaternion_invert")]
    #[must_use]
    pub fn invert(&self) -> Quaternion {
        unsafe {
            let mut res = Quaternion::uninitialized();
            ffi::graphene_quaternion_invert(self.to_glib_none().0, res.to_glib_none_mut().0);
            res
        }
    }

    /// Multiplies two [`Quaternion`][crate::Quaternion] `self` and `b`.
    /// ## `b`
    /// a [`Quaternion`][crate::Quaternion]
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// the result of the operation
    #[doc(alias = "graphene_quaternion_multiply")]
    #[must_use]
    pub fn multiply(&self, b: &Quaternion) -> Quaternion {
        unsafe {
            let mut res = Quaternion::uninitialized();
            ffi::graphene_quaternion_multiply(
                self.to_glib_none().0,
                b.to_glib_none().0,
                res.to_glib_none_mut().0,
            );
            res
        }
    }

    /// Normalizes a [`Quaternion`][crate::Quaternion].
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// return location for the normalized
    ///  quaternion
    #[doc(alias = "graphene_quaternion_normalize")]
    #[must_use]
    pub fn normalize(&self) -> Quaternion {
        unsafe {
            let mut res = Quaternion::uninitialized();
            ffi::graphene_quaternion_normalize(self.to_glib_none().0, res.to_glib_none_mut().0);
            res
        }
    }

    /// Scales all the elements of a [`Quaternion`][crate::Quaternion] `self` using
    /// the given scalar factor.
    /// ## `factor`
    /// a scaling factor
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// the result of the operation
    #[doc(alias = "graphene_quaternion_scale")]
    #[must_use]
    pub fn scale(&self, factor: f32) -> Quaternion {
        unsafe {
            let mut res = Quaternion::uninitialized();
            ffi::graphene_quaternion_scale(self.to_glib_none().0, factor, res.to_glib_none_mut().0);
            res
        }
    }

    /// Interpolates between the two given quaternions using a spherical
    /// linear interpolation, or [SLERP](http://en.wikipedia.org/wiki/Slerp),
    /// using the given interpolation `factor`.
    /// ## `b`
    /// a [`Quaternion`][crate::Quaternion]
    /// ## `factor`
    /// the linear interpolation factor
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// return location for the interpolated
    ///  quaternion
    #[doc(alias = "graphene_quaternion_slerp")]
    #[must_use]
    pub fn slerp(&self, b: &Quaternion, factor: f32) -> Quaternion {
        unsafe {
            let mut res = Quaternion::uninitialized();
            ffi::graphene_quaternion_slerp(
                self.to_glib_none().0,
                b.to_glib_none().0,
                factor,
                res.to_glib_none_mut().0,
            );
            res
        }
    }

    /// Converts a quaternion into an `angle`, `axis` pair.
    ///
    /// # Returns
    ///
    ///
    /// ## `angle`
    /// return location for the angle, in degrees
    ///
    /// ## `axis`
    /// return location for the rotation axis
    #[doc(alias = "graphene_quaternion_to_angle_vec3")]
    pub fn to_angle_vec3(&self) -> (f32, Vec3) {
        unsafe {
            let mut angle = mem::MaybeUninit::uninit();
            let mut axis = Vec3::uninitialized();
            ffi::graphene_quaternion_to_angle_vec3(
                self.to_glib_none().0,
                angle.as_mut_ptr(),
                axis.to_glib_none_mut().0,
            );
            let angle = angle.assume_init();
            (angle, axis)
        }
    }

    /// Converts a [`Quaternion`][crate::Quaternion] to its corresponding rotations
    /// on the [Euler angles](http://en.wikipedia.org/wiki/Euler_angles)
    /// on each axis.
    ///
    /// # Returns
    ///
    ///
    /// ## `deg_x`
    /// return location for the rotation angle on
    ///  the X axis (yaw), in degrees
    ///
    /// ## `deg_y`
    /// return location for the rotation angle on
    ///  the Y axis (pitch), in degrees
    ///
    /// ## `deg_z`
    /// return location for the rotation angle on
    ///  the Z axis (roll), in degrees
    #[doc(alias = "graphene_quaternion_to_angles")]
    pub fn to_angles(&self) -> (f32, f32, f32) {
        unsafe {
            let mut deg_x = mem::MaybeUninit::uninit();
            let mut deg_y = mem::MaybeUninit::uninit();
            let mut deg_z = mem::MaybeUninit::uninit();
            ffi::graphene_quaternion_to_angles(
                self.to_glib_none().0,
                deg_x.as_mut_ptr(),
                deg_y.as_mut_ptr(),
                deg_z.as_mut_ptr(),
            );
            let deg_x = deg_x.assume_init();
            let deg_y = deg_y.assume_init();
            let deg_z = deg_z.assume_init();
            (deg_x, deg_y, deg_z)
        }
    }

    /// Converts a quaternion into a transformation matrix expressing
    /// the rotation defined by the [`Quaternion`][crate::Quaternion].
    ///
    /// # Returns
    ///
    ///
    /// ## `m`
    /// a [`Matrix`][crate::Matrix]
    #[doc(alias = "graphene_quaternion_to_matrix")]
    pub fn to_matrix(&self) -> Matrix {
        unsafe {
            let mut m = Matrix::uninitialized();
            ffi::graphene_quaternion_to_matrix(self.to_glib_none().0, m.to_glib_none_mut().0);
            m
        }
    }

    /// Converts a [`Quaternion`][crate::Quaternion] to its corresponding rotations
    /// on the [Euler angles](http://en.wikipedia.org/wiki/Euler_angles)
    /// on each axis.
    ///
    /// # Returns
    ///
    ///
    /// ## `rad_x`
    /// return location for the rotation angle on
    ///  the X axis (yaw), in radians
    ///
    /// ## `rad_y`
    /// return location for the rotation angle on
    ///  the Y axis (pitch), in radians
    ///
    /// ## `rad_z`
    /// return location for the rotation angle on
    ///  the Z axis (roll), in radians
    #[doc(alias = "graphene_quaternion_to_radians")]
    pub fn to_radians(&self) -> (f32, f32, f32) {
        unsafe {
            let mut rad_x = mem::MaybeUninit::uninit();
            let mut rad_y = mem::MaybeUninit::uninit();
            let mut rad_z = mem::MaybeUninit::uninit();
            ffi::graphene_quaternion_to_radians(
                self.to_glib_none().0,
                rad_x.as_mut_ptr(),
                rad_y.as_mut_ptr(),
                rad_z.as_mut_ptr(),
            );
            let rad_x = rad_x.assume_init();
            let rad_y = rad_y.assume_init();
            let rad_z = rad_z.assume_init();
            (rad_x, rad_y, rad_z)
        }
    }

    /// Copies the components of a [`Quaternion`][crate::Quaternion] into a
    /// [`Vec4`][crate::Vec4].
    ///
    /// # Returns
    ///
    ///
    /// ## `res`
    /// return location for a
    ///  [`Vec4`][crate::Vec4]
    #[doc(alias = "graphene_quaternion_to_vec4")]
    pub fn to_vec4(&self) -> Vec4 {
        unsafe {
            let mut res = Vec4::uninitialized();
            ffi::graphene_quaternion_to_vec4(self.to_glib_none().0, res.to_glib_none_mut().0);
            res
        }
    }
}

impl PartialEq for Quaternion {
    #[inline]
    fn eq(&self, other: &Self) -> bool {
        self.equal(other)
    }
}

impl Eq for Quaternion {}