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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use core::nonzero::NonZero;
use dom::bindings::codegen::Bindings::VRFrameDataBinding;
use dom::bindings::codegen::Bindings::VRFrameDataBinding::VRFrameDataMethods;
use dom::bindings::conversions::{slice_to_array_buffer_view, update_array_buffer_view};
use dom::bindings::error::Fallible;
use dom::bindings::js::{JS, Root};
use dom::bindings::num::Finite;
use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
use dom::globalscope::GlobalScope;
use dom::vrpose::VRPose;
use dom::window::Window;
use js::jsapi::{Heap, JSContext, JSObject};
use std::cell::Cell;
use webvr_traits::WebVRFrameData;
#[dom_struct]
pub struct VRFrameData {
reflector_: Reflector,
left_proj: Heap<*mut JSObject>,
left_view: Heap<*mut JSObject>,
right_proj: Heap<*mut JSObject>,
right_view: Heap<*mut JSObject>,
pose: JS<VRPose>,
timestamp: Cell<f64>,
first_timestamp: Cell<f64>
}
impl VRFrameData {
#[allow(unsafe_code)]
#[allow(unrooted_must_root)]
fn new(global: &GlobalScope) -> Root<VRFrameData> {
let matrix = [1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 0.0, 1.0f32];
let pose = VRPose::new(&global, &Default::default());
let mut framedata = VRFrameData {
reflector_: Reflector::new(),
left_proj: Heap::default(),
left_view: Heap::default(),
right_proj: Heap::default(),
right_view: Heap::default(),
pose: JS::from_ref(&*pose),
timestamp: Cell::new(0.0),
first_timestamp: Cell::new(0.0)
};
unsafe {
framedata.left_proj.set(slice_to_array_buffer_view(global.get_cx(), &matrix));
framedata.left_view.set(slice_to_array_buffer_view(global.get_cx(), &matrix));
framedata.right_proj.set(slice_to_array_buffer_view(global.get_cx(), &matrix));
framedata.right_view.set(slice_to_array_buffer_view(global.get_cx(), &matrix));
}
reflect_dom_object(box framedata,
global,
VRFrameDataBinding::Wrap)
}
pub fn Constructor(window: &Window) -> Fallible<Root<VRFrameData>> {
Ok(VRFrameData::new(&window.global()))
}
}
impl VRFrameData {
#[allow(unsafe_code)]
pub fn update(&self, data: &WebVRFrameData) {
unsafe {
update_array_buffer_view(self.left_proj.get(), &data.left_projection_matrix);
update_array_buffer_view(self.left_view.get(), &data.left_view_matrix);
update_array_buffer_view(self.right_proj.get(), &data.right_projection_matrix);
update_array_buffer_view(self.right_view.get(), &data.right_view_matrix);
}
self.pose.update(&data.pose);
self.timestamp.set(data.timestamp);
if self.first_timestamp.get() == 0.0 {
self.first_timestamp.set(data.timestamp);
}
}
}
impl VRFrameDataMethods for VRFrameData {
// https://w3c.github.io/webvr/#dom-vrframedata-timestamp
fn Timestamp(&self) -> Finite<f64> {
Finite::wrap(self.timestamp.get() - self.first_timestamp.get())
}
#[allow(unsafe_code)]
// https://w3c.github.io/webvr/#dom-vrframedata-leftprojectionmatrix
unsafe fn LeftProjectionMatrix(&self, _cx: *mut JSContext) -> NonZero<*mut JSObject> {
NonZero::new(self.left_proj.get())
}
#[allow(unsafe_code)]
// https://w3c.github.io/webvr/#dom-vrframedata-leftviewmatrix
unsafe fn LeftViewMatrix(&self, _cx: *mut JSContext) -> NonZero<*mut JSObject> {
NonZero::new(self.left_view.get())
}
#[allow(unsafe_code)]
// https://w3c.github.io/webvr/#dom-vrframedata-rightprojectionmatrix
unsafe fn RightProjectionMatrix(&self, _cx: *mut JSContext) -> NonZero<*mut JSObject> {
NonZero::new(self.right_proj.get())
}
#[allow(unsafe_code)]
// https://w3c.github.io/webvr/#dom-vrframedata-rightviewmatrix
unsafe fn RightViewMatrix(&self, _cx: *mut JSContext) -> NonZero<*mut JSObject> {
NonZero::new(self.right_view.get())
}
// https://w3c.github.io/webvr/#dom-vrframedata-pose
fn Pose(&self) -> Root<VRPose> {
Root::from_ref(&*self.pose)
}
}
|
