1 /* Copyright 2018 Paul Hänsch
3 This file is part of Serve0
5 Serve0 is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Affero General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 Serve0 is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Affero General Public License for more details.
15 You should have received a copy of the GNU Affero General Public License
16 along with Serve0 If not, see <http://www.gnu.org/licenses/>.
20 var pitch = 0, roll = 0, yaw = 0;
21 var w, h, hdeg, vdeg, scale, fov = 90;
22 var lv = document.createElement("canvas");
23 var rv = document.createElement("canvas");
24 var debug = document.createElement("p");
29 dh = h / 2 * scale |0;
31 if ( layout == "180" ) {
32 sx = (w / 2 - fov * hdeg) / 2 + yaw * hdeg |0;
33 sy = ( h - fov * vdeg) / 2 + pitch * vdeg |0;
34 if (sx + sw > w / 2) { sx = w / 2 - sw; } else if (sx < 0) { sx = 0; }
35 lc.drawImage(video, sx, sy, sw, sh, 0, 0, lv.width, dh);
36 rc.drawImage(video, w / 2 + sx, sy, sw, sh, 0, 0, rv.width, dh);
38 sx = (w - fov * hdeg) / 2 + yaw * hdeg |0;
39 sy = (h - fov * vdeg) / 4 + pitch * vdeg |0;
40 lc.drawImage(video, sx, sy, sw, sh, 0, 0, lv.width, dh);
41 rc.drawImage(video, sx, h/2 + sy, sw, sh, 0, 0, rv.width, dh);
43 lc.drawImage(video, sx + w, sy, sw, sh, 0, 0, lv.width, dh);
44 rc.drawImage(video, sx + w, h/2 + sy, sw, sh, 0, 0, rv.width, dh);
45 } else if ( sx + fov * hdeg > w) {
46 lc.drawImage(video, sx - w, sy, sw, sh, 0, 0, lv.width, dh);
47 rc.drawImage(video, sx - w, h/2 + sy, sw, sh, 0, 0, rv.width, dh);
51 lv.style.transform = "rotate(" + roll + "deg)";
52 rv.style.transform = "rotate(" + roll + "deg)";
54 requestAnimationFrame(draw);
57 function stereoview(layout, video) {
58 this.layout = layout; this.video = video;
59 document.body.appendChild( lv );
60 document.body.appendChild( rv );
61 // document.body.appendChild( debug );
63 lv.setAttribute( "style", "position: fixed; top: 0; left: 0 ; width: 50%; height: 100%; z-index: 100;");
64 rv.setAttribute( "style", "position: fixed; top: 0; left: 50%; width: 50%; height: 100%; z-index: 100;");
65 debug.setAttribute( "style", "position: fixed; top: 0; left: 0; z-index: 101; background: #000;");
67 lv.setAttribute( "width", "" + lv.offsetWidth);
68 rv.setAttribute( "width", "" + rv.offsetWidth);
69 lv.setAttribute("height", "" + lv.offsetHeight);
70 rv.setAttribute("height", "" + rv.offsetHeight);
72 lc = lv.getContext("2d");
73 rc = rv.getContext("2d");
75 window.addEventListener("devicemotion", (function() {
76 var x = [], y = [], z = [], cnt = -1, inertia = 6;
77 return function(event) {
78 cnt = (cnt + 1) % inertia;
80 x[cnt] = event.accelerationIncludingGravity.x;
81 y[cnt] = event.accelerationIncludingGravity.y;
82 z[cnt] = event.accelerationIncludingGravity.z;
84 tx = 0; x.forEach( function(n, i){ tx += n; } ); tx /= inertia;
85 ty = 0; y.forEach( function(n, i){ ty += n; } ); ty /= inertia;
86 tz = 0; z.forEach( function(n, i){ tz += n; } ); tz /= inertia;
88 pitch = Math.asin((tz / 9.81 > 1)?1:(tz/9.81)) / Math.PI * 180;
89 roll = - Math.asin((ty / 9.81 > 1)?1:(ty/9.81)) / Math.PI * 180;
90 yaw = (yaw + ty) % 360;
94 window.addEventListener("click", function(event) {
95 (lv.parentElement)?lv.parentElement.removeChild(lv):{};
96 (rv.parentElement)?rv.parentElement.removeChild(rv):{};
97 video.style.display = "block";
101 w = video.videoWidth; h = video.videoHeight;
102 hdeg = w / 360; vdeg = h / 180;
103 scale = lv.width / (fov * hdeg |0);
104 // scale = lv.width / (w / 4);
106 video.style.display = "none";