egraphics_core/
triangle.rs

1use crate::Error;
2use crate::Error::NoElements;
3use std::mem;
4
5#[derive(Copy, Clone, Debug, PartialEq)]
6pub struct Vector3D {
7    x: f32,
8    y: f32,
9    z: f32,
10}
11
12impl Vector3D {
13    pub fn new(x: f32, y: f32, z: f32) -> Self {
14        Self { x, y, z }
15    }
16}
17
18#[derive(Copy, Clone, Debug, PartialEq)]
19#[repr(C)]
20pub struct Vertex {
21    pub(crate) position: nalgebra::Point3<f32>,
22    pub(crate) color: nalgebra::Point3<f32>,
23}
24
25impl Vertex {
26    pub fn new(position: nalgebra::Point3<f32>, color: nalgebra::Point3<f32>) -> Self {
27        Self { position, color }
28    }
29
30    pub fn position(&self) -> &nalgebra::Point3<f32> {
31        &self.position
32    }
33
34    pub fn color(&self) -> &nalgebra::Point3<f32> {
35        &self.color
36    }
37}
38
39#[derive(Clone, Debug, PartialEq)]
40pub struct Triangle {
41    vertices: Vec<Vertex>,
42}
43
44impl Triangle {
45    pub fn new(vertices: Vec<Vertex>) -> Result<Self, Error> {
46        if vertices.is_empty() {
47            return Err(NoElements);
48        }
49
50        Ok(Self { vertices })
51    }
52
53    pub(crate) fn buffer_length(&self) -> u32 {
54        (self.vertices.len() * mem::size_of::<Vertex>()) as u32
55    }
56
57    pub(crate) fn len(&self) -> usize {
58        self.vertices.len()
59    }
60
61    pub(crate) fn get_vertices(&self) -> &Vec<Vertex> {
62        &self.vertices
63    }
64}
65
66impl From<Vec<nalgebra::Point3<f32>>> for Triangle {
67    fn from(item: Vec<nalgebra::Point3<f32>>) -> Self {
68        let vertices = item
69            .iter()
70            .map(|p| Vertex {
71                position: *p,
72                color: nalgebra::Point3::new(0.5, 0.5, 0.5),
73            })
74            .collect();
75        Triangle { vertices }
76    }
77}
egraphics_core/triangle.rs

egraphics_core/
triangle.rs
