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// 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::{Box, Plane, Point3D, Vec2, Vec3};
use glib::translate::*;
glib::wrapper! {
/// A triangle.
pub struct Triangle(BoxedInline<ffi::graphene_triangle_t>);
match fn {
copy => |ptr| glib::gobject_ffi::g_boxed_copy(ffi::graphene_triangle_get_type(), ptr as *mut _) as *mut ffi::graphene_triangle_t,
free => |ptr| glib::gobject_ffi::g_boxed_free(ffi::graphene_triangle_get_type(), ptr as *mut _),
type_ => || ffi::graphene_triangle_get_type(),
}
}
impl Triangle {
/// Checks whether the given triangle `self` contains the point `p`.
/// ## `p`
/// a [`Point3D`][crate::Point3D]
///
/// # Returns
///
/// `true` if the point is inside the triangle
#[doc(alias = "graphene_triangle_contains_point")]
pub fn contains_point(&self, p: &Point3D) -> bool {
unsafe { ffi::graphene_triangle_contains_point(self.to_glib_none().0, p.to_glib_none().0) }
}
#[doc(alias = "graphene_triangle_equal")]
fn equal(&self, b: &Triangle) -> bool {
unsafe { ffi::graphene_triangle_equal(self.to_glib_none().0, b.to_glib_none().0) }
}
/// Computes the area of the given [`Triangle`][crate::Triangle].
///
/// # Returns
///
/// the area of the triangle
#[doc(alias = "graphene_triangle_get_area")]
#[doc(alias = "get_area")]
pub fn area(&self) -> f32 {
unsafe { ffi::graphene_triangle_get_area(self.to_glib_none().0) }
}
/// Computes the [barycentric coordinates](http://en.wikipedia.org/wiki/Barycentric_coordinate_system)
/// of the given point `p`.
///
/// The point `p` must lie on the same plane as the triangle `self`; if the
/// point is not coplanar, the result of this function is undefined.
///
/// If we place the origin in the coordinates of the triangle's A point,
/// the barycentric coordinates are `u`, which is on the AC vector; and `v`
/// which is on the AB vector:
///
/// ![](triangle-barycentric.png)
///
/// The returned [`Vec2`][crate::Vec2] contains the following values, in order:
///
/// - `res.x = u`
/// - `res.y = v`
/// ## `p`
/// a [`Point3D`][crate::Point3D]
///
/// # Returns
///
/// `true` if the barycentric coordinates are valid
///
/// ## `res`
/// return location for the vector
/// with the barycentric coordinates
#[doc(alias = "graphene_triangle_get_barycoords")]
#[doc(alias = "get_barycoords")]
pub fn barycoords(&self, p: Option<&Point3D>) -> Option<Vec2> {
unsafe {
let mut res = Vec2::uninitialized();
let ret = ffi::graphene_triangle_get_barycoords(
self.to_glib_none().0,
p.to_glib_none().0,
res.to_glib_none_mut().0,
);
if ret {
Some(res)
} else {
None
}
}
}
/// Computes the bounding box of the given [`Triangle`][crate::Triangle].
///
/// # Returns
///
///
/// ## `res`
/// return location for the box
#[doc(alias = "graphene_triangle_get_bounding_box")]
#[doc(alias = "get_bounding_box")]
pub fn bounding_box(&self) -> Box {
unsafe {
let mut res = Box::uninitialized();
ffi::graphene_triangle_get_bounding_box(
self.to_glib_none().0,
res.to_glib_none_mut().0,
);
res
}
}
/// Computes the coordinates of the midpoint of the given [`Triangle`][crate::Triangle].
///
/// The midpoint G is the [centroid](https://en.wikipedia.org/wiki/Centroid`Triangle_centroid`)
/// of the triangle, i.e. the intersection of its medians.
///
/// # Returns
///
///
/// ## `res`
/// return location for the coordinates of
/// the midpoint
#[doc(alias = "graphene_triangle_get_midpoint")]
#[doc(alias = "get_midpoint")]
pub fn midpoint(&self) -> Point3D {
unsafe {
let mut res = Point3D::uninitialized();
ffi::graphene_triangle_get_midpoint(self.to_glib_none().0, res.to_glib_none_mut().0);
res
}
}
/// Computes the normal vector of the given [`Triangle`][crate::Triangle].
///
/// # Returns
///
///
/// ## `res`
/// return location for the normal vector
#[doc(alias = "graphene_triangle_get_normal")]
#[doc(alias = "get_normal")]
pub fn normal(&self) -> Vec3 {
unsafe {
let mut res = Vec3::uninitialized();
ffi::graphene_triangle_get_normal(self.to_glib_none().0, res.to_glib_none_mut().0);
res
}
}
/// Computes the plane based on the vertices of the given [`Triangle`][crate::Triangle].
///
/// # Returns
///
///
/// ## `res`
/// return location for the plane
#[doc(alias = "graphene_triangle_get_plane")]
#[doc(alias = "get_plane")]
pub fn plane(&self) -> Plane {
unsafe {
let mut res = Plane::uninitialized();
ffi::graphene_triangle_get_plane(self.to_glib_none().0, res.to_glib_none_mut().0);
res
}
}
/// Retrieves the three vertices of the given [`Triangle`][crate::Triangle] and returns
/// their coordinates as [`Point3D`][crate::Point3D].
///
/// # Returns
///
///
/// ## `a`
/// return location for the coordinates
/// of the first vertex
///
/// ## `b`
/// return location for the coordinates
/// of the second vertex
///
/// ## `c`
/// return location for the coordinates
/// of the third vertex
#[doc(alias = "graphene_triangle_get_points")]
#[doc(alias = "get_points")]
pub fn points(&self) -> (Point3D, Point3D, Point3D) {
unsafe {
let mut a = Point3D::uninitialized();
let mut b = Point3D::uninitialized();
let mut c = Point3D::uninitialized();
ffi::graphene_triangle_get_points(
self.to_glib_none().0,
a.to_glib_none_mut().0,
b.to_glib_none_mut().0,
c.to_glib_none_mut().0,
);
(a, b, c)
}
}
/// Computes the UV coordinates of the given point `p`.
///
/// The point `p` must lie on the same plane as the triangle `self`; if the point
/// is not coplanar, the result of this function is undefined. If `p` is [`None`],
/// the point will be set in (0, 0, 0).
///
/// The UV coordinates will be placed in the `res` vector:
///
/// - `res.x = u`
/// - `res.y = v`
///
/// See also: [`barycoords()`][Self::barycoords()]
/// ## `p`
/// a [`Point3D`][crate::Point3D]
/// ## `uv_a`
/// the UV coordinates of the first point
/// ## `uv_b`
/// the UV coordinates of the second point
/// ## `uv_c`
/// the UV coordinates of the third point
///
/// # Returns
///
/// `true` if the coordinates are valid
///
/// ## `res`
/// a vector containing the UV coordinates
/// of the given point `p`
#[doc(alias = "graphene_triangle_get_uv")]
#[doc(alias = "get_uv")]
pub fn uv(&self, p: Option<&Point3D>, uv_a: &Vec2, uv_b: &Vec2, uv_c: &Vec2) -> Option<Vec2> {
unsafe {
let mut res = Vec2::uninitialized();
let ret = ffi::graphene_triangle_get_uv(
self.to_glib_none().0,
p.to_glib_none().0,
uv_a.to_glib_none().0,
uv_b.to_glib_none().0,
uv_c.to_glib_none().0,
res.to_glib_none_mut().0,
);
if ret {
Some(res)
} else {
None
}
}
}
/// Retrieves the three vertices of the given [`Triangle`][crate::Triangle].
///
/// # Returns
///
///
/// ## `a`
/// return location for the first vertex
///
/// ## `b`
/// return location for the second vertex
///
/// ## `c`
/// return location for the third vertex
#[doc(alias = "graphene_triangle_get_vertices")]
#[doc(alias = "get_vertices")]
pub fn vertices(&self) -> (Vec3, Vec3, Vec3) {
unsafe {
let mut a = Vec3::uninitialized();
let mut b = Vec3::uninitialized();
let mut c = Vec3::uninitialized();
ffi::graphene_triangle_get_vertices(
self.to_glib_none().0,
a.to_glib_none_mut().0,
b.to_glib_none_mut().0,
c.to_glib_none_mut().0,
);
(a, b, c)
}
}
}
impl PartialEq for Triangle {
#[inline]
fn eq(&self, other: &Self) -> bool {
self.equal(other)
}
}
impl Eq for Triangle {}