ptex-sys 0.3.0

Rust sys bindings for Ptex https://github.com/wdas/ptex
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169

use cxx::let_cxx_string;
use ptex_sys::{
    ptexcache_create, ptexcache_get, ptextexture_get_face_info, ptexwriter_close,
    ptexwriter_write_face, EdgeId, FaceInfo, PtexCache, PtexWriter,
};

#[test]
fn open_writer() {
    let filename = "out.ptx";
    let alpha_channel = -1;
    let num_channels = 3;
    let num_faces = 9;
    let genmipmaps = false;
    let meshtype = ptex_sys::MeshType::Quad;
    let datatype = ptex_sys::DataType::UInt8;

    let_cxx_string!(error_str = "");

    let writer = unsafe {
        ptex_sys::ptexwriter_open(
            filename,
            meshtype,
            datatype,
            num_channels,
            alpha_channel,
            num_faces,
            genmipmaps,
            error_str.as_mut().get_unchecked_mut(),
        )
    };
    assert!(!writer.is_null());
    assert!(error_str.is_empty());
}

#[test]
fn funky_values_mesh_type() {
    let filename = "out.ptx";
    let alpha_channel = -1;
    let num_channels = 3;
    let num_faces = 9;
    let genmipmaps = false;
    // The last variant in the enum.
    let mut meshtype = ptex_sys::MeshType::Quad;
    meshtype.repr += 1;
    let datatype = ptex_sys::DataType::Float32;

    let_cxx_string!(error_str = "");

    let writer = unsafe {
        ptex_sys::ptexwriter_open(
            filename,
            meshtype,
            datatype,
            num_channels,
            alpha_channel,
            num_faces,
            genmipmaps,
            error_str.as_mut().get_unchecked_mut(),
        )
    };
    assert!(writer.is_null());
    assert_eq!(
        error_str.to_str(),
        Ok("PtexWriter error: Invalid mesh type")
    );
}

#[test]
fn funky_values_data_type() {
    let filename = "out.ptx";
    let alpha_channel = -1;
    let num_channels = 3;
    let num_faces = 9;
    let genmipmaps = false;
    let meshtype = ptex_sys::MeshType::Quad;
    // The last variant in the enum.
    let mut datatype = ptex_sys::DataType::Float32;
    datatype.repr += 1;

    let_cxx_string!(error_str = "");

    let writer = unsafe {
        ptex_sys::ptexwriter_open(
            filename,
            meshtype,
            datatype,
            num_channels,
            alpha_channel,
            num_faces,
            genmipmaps,
            error_str.as_mut().get_unchecked_mut(),
        )
    };
    assert!(writer.is_null());
    assert_eq!(
        error_str.to_str(),
        Ok("PtexWriter error: Invalid data type")
    );
}

fn make_test_writer(filename: &str) -> *mut PtexWriter {
    let alpha_channel = -1;
    let num_channels = 3;
    let num_faces = 9;
    let genmipmaps = false;
    let meshtype = ptex_sys::MeshType::Quad;
    let datatype = ptex_sys::DataType::UInt8;

    let_cxx_string!(error_str = "");

    let writer = unsafe {
        ptex_sys::ptexwriter_open(
            filename,
            meshtype,
            datatype,
            num_channels,
            alpha_channel,
            num_faces,
            genmipmaps,
            error_str.as_mut().get_unchecked_mut(),
        )
    };
    assert!(!writer.is_null());
    writer
}

#[test]
fn funky_values_edge_id() {
    let writer = make_test_writer("funky_edge_ids.ptex");
    let mut face_info = FaceInfo::default();
    // Left currently being the last variant in `EdgeId`.
    let mut e1 = EdgeId::Left;
    let mut e2 = EdgeId::Left;
    let mut e3 = EdgeId::Left;
    let mut e4 = EdgeId::Left;
    e1.repr += 1;
    e2.repr += 2;
    e3.repr += 3;
    e4.repr += 4;
    let stride = 0;
    face_info.set_adjacent_edges(e1, e2, e3, e4);
    let data = [0_u8; 9];
    let wrote_face = unsafe { ptexwriter_write_face(writer, 0, &face_info, data.as_ptr(), stride) };
    assert!(wrote_face);
    unsafe {
        ptexwriter_close(writer);
    }
    let cache: *mut PtexCache = unsafe { ptexcache_create(1, 1024, true) };
    assert!(!cache.is_null());
    let_cxx_string!(error_str = "");
    let texture = unsafe {
        ptexcache_get(
            cache,
            "funky_edge_ids.ptex",
            error_str.as_mut().get_unchecked_mut(),
        )
    };
    assert!(!texture.is_null());
    let face_info = unsafe { ptextexture_get_face_info(texture, 0) };
    for i in 0..face_info.adjedges {
        let edge_id = face_info.adjacent_edge(i.into());
        assert!(
            edge_id == EdgeId::Bottom
                || edge_id == EdgeId::Right
                || edge_id == EdgeId::Top
                || edge_id == EdgeId::Left
        );
    }
}