pytrace 0.3.3

A Python library for ray tracing and image generation
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133

use pyo3::prelude::*;
use pyo3::{PyIterProtocol, PyNumberProtocol, PyObjectProtocol};
use std::vec;

use pytrace_core::internal;

#[pyclass]
#[derive(Clone, Copy)]
#[text_signature = "(x, y, z)"]
pub struct Vec {
    #[pyo3(get, set)]
    pub x: f64,
    #[pyo3(get, set)]
    pub y: f64,
    #[pyo3(get, set)]
    pub z: f64,
}

#[pymethods]
impl Vec {
    #[new]
    pub fn new(x: f64, y: f64, z: f64) -> Self {
        Self { x, y, z }
    }
}

#[pyproto]
impl PyObjectProtocol for Vec {
    fn __repr__(self) -> PyResult<String> {
        Ok(format!("⟨{}, {}, {}⟩", self.x, self.y, self.z))
    }

    fn __str__(self) -> PyResult<String> {
        Ok(format!("Vector⟨{}, {}, {}⟩", self.x, self.y, self.z))
    }
}

impl Vec {
    pub fn to_internal(self) -> internal::Vec3 {
        internal::Vec3(self.x, self.y, self.z)
    }

    pub fn into_iter(self) -> Iterator {
        Iterator::new(vec![self.x, self.y, self.z])
    }

    pub fn from(v: internal::Vec3) -> Self {
        Self {
            x: v.0,
            y: v.1,
            z: v.2,
        }
    }
}

#[pyproto]
impl PyNumberProtocol for Vec {
    fn __add__(lhs: Vec, rhs: Vec) -> PyResult<Vec> {
        Ok(Vec {
            x: lhs.x + rhs.x,
            y: lhs.y + rhs.y,
            z: lhs.z + rhs.z,
        })
    }

    fn __neg__(self) -> PyResult<Vec> {
        Ok(Vec {
            x: -self.x,
            y: -self.y,
            z: -self.z,
        })
    }

    fn __sub__(lhs: Vec, rhs: Vec) -> PyResult<Vec> {
        Ok(Vec {
            x: lhs.x - rhs.x,
            y: lhs.y - rhs.y,
            z: lhs.z - rhs.z,
        })
    }

    fn __mul__(lhs: Vec, rhs: f64) -> PyResult<Vec> {
        Ok(Vec {
            x: lhs.x * rhs,
            y: lhs.y * rhs,
            z: lhs.z * rhs,
        })
    }

    fn __truediv__(lhs: Vec, rhs: f64) -> PyResult<Vec> {
        Ok(Vec {
            x: lhs.x / rhs,
            y: lhs.y / rhs,
            z: lhs.z / rhs,
        })
    }
}

#[pyclass]
#[derive(Clone)]
pub struct Iterator {
    idx: usize,
    contents: vec::Vec<f64>,
}

impl Iterator {
    pub fn new(v: vec::Vec<f64>) -> Self {
        Self {
            idx: 0,
            contents: v,
        }
    }
}

#[pyproto]
impl PyIterProtocol for Iterator {
    fn __next__(mut item: PyRefMut<Iterator>) -> PyResult<Option<f64>> {
        if item.idx < item.contents.len() {
            let res = item.contents[item.idx];
            item.idx += 1;
            Ok(Some(res))
        } else {
            Ok(None)
        }
    }
}

#[pyproto]
impl PyIterProtocol for Vec {
    fn __iter__(item: PyRefMut<Vec>) -> PyResult<Iterator> {
        Ok(item.into_iter())
    }
}