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use crate::color;
use crate::geom::{self, Point2, Point3, Vector3};
use crate::math::BaseFloat;
use crate::mesh::vertex::{WithColor, WithTexCoords};
use std::marker::PhantomData;
pub type Point<S = geom::scalar::Default> = Point3<S>;
pub type Color = color::LinSrgba;
pub type TexCoords<S = geom::scalar::Default> = Point2<S>;
pub type Normal<S = geom::scalar::Default> = Vector3<S>;
pub type ColoredPoint<S = geom::scalar::Default> = WithColor<Point<S>, Color>;
pub type ColoredPoint2<S = geom::scalar::Default> = WithColor<Point2<S>, Color>;
pub type Vertex<S = geom::scalar::Default> =
WithTexCoords<WithColor<Point<S>, Color>, TexCoords<S>>;
pub const COLOR_CHANNEL_COUNT: usize = 4;
pub const DEFAULT_VERTEX_COLOR: Color = color::Alpha {
color: color::rgb::Rgb {
red: 1.0,
green: 1.0,
blue: 1.0,
standard: std::marker::PhantomData,
},
alpha: 1.0,
};
pub fn new<S>(point: Point<S>, color: Color, tex_coords: TexCoords<S>) -> Vertex<S> {
WithTexCoords {
tex_coords,
vertex: WithColor {
color,
vertex: point,
},
}
}
pub fn default_tex_coords<S>() -> TexCoords<S>
where
S: BaseFloat,
{
Point2 {
x: S::zero(),
y: S::zero(),
}
}
impl<S> Vertex<S> {
pub fn point(&self) -> &Point<S> {
&self.vertex.vertex
}
pub fn point_mut(&mut self) -> &mut Point<S> {
&mut self.vertex.vertex
}
}
#[derive(Clone, Debug)]
pub struct IterFromColoredPoints<I, S = geom::scalar::Default> {
colored_points: I,
_scalar: PhantomData<S>,
}
impl<I, S> IterFromColoredPoints<I, S> {
pub fn new<P>(colored_points: P) -> Self
where
P: IntoIterator<IntoIter = I, Item = WithColor<Point<S>, Color>>,
I: Iterator<Item = WithColor<Point<S>, Color>>,
{
let colored_points = colored_points.into_iter();
let _scalar = PhantomData;
IterFromColoredPoints {
colored_points,
_scalar,
}
}
}
impl<I, S> Iterator for IterFromColoredPoints<I, S>
where
I: Iterator<Item = WithColor<Point<S>, Color>>,
S: BaseFloat,
{
type Item = Vertex<S>;
fn next(&mut self) -> Option<Self::Item> {
self.colored_points.next().map(|vertex| {
let tex_coords = default_tex_coords();
let vertex = WithTexCoords { tex_coords, vertex };
vertex
})
}
}
#[derive(Clone, Debug)]
pub struct IterFromPoints<I, S = geom::scalar::Default> {
points: I,
default_color: Color,
_scalar: PhantomData<S>,
}
#[derive(Clone, Debug)]
pub struct IterFromPoint2s<I, S = geom::scalar::Default> {
points: I,
default_color: Color,
_scalar: PhantomData<S>,
}
impl<I, S> IterFromPoints<I, S> {
pub fn new<P>(points: P, default_color: Color) -> Self
where
P: IntoIterator<IntoIter = I, Item = Point<S>>,
I: Iterator<Item = Point3<S>>,
{
let points = points.into_iter();
let _scalar = PhantomData;
IterFromPoints {
points,
default_color,
_scalar,
}
}
}
impl<I, S> IterFromPoint2s<I, S> {
pub fn new<P>(points: P, default_color: Color) -> Self
where
P: IntoIterator<IntoIter = I, Item = Point2<S>>,
I: Iterator<Item = Point2<S>>,
{
let points = points.into_iter();
let _scalar = PhantomData;
IterFromPoint2s {
points,
default_color,
_scalar,
}
}
}
impl<I, S> Iterator for IterFromPoints<I, S>
where
I: Iterator<Item = Point<S>>,
S: BaseFloat,
{
type Item = Vertex<S>;
fn next(&mut self) -> Option<Self::Item> {
self.points.next().map(|vertex| {
let color = self.default_color;
let vertex = WithColor { vertex, color };
let tex_coords = default_tex_coords();
let vertex = WithTexCoords { vertex, tex_coords };
vertex
})
}
}
impl<I, S> Iterator for IterFromPoint2s<I, S>
where
I: Iterator<Item = Point2<S>>,
S: BaseFloat,
{
type Item = Vertex<S>;
fn next(&mut self) -> Option<Self::Item> {
self.points.next().map(|Point2 { x, y }| {
let vertex = Point3 { x, y, z: S::zero() };
let color = self.default_color;
let vertex = WithColor { vertex, color };
let tex_coords = default_tex_coords();
let vertex = WithTexCoords { vertex, tex_coords };
vertex
})
}
}