mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-12-28 11:32:05 +00:00
282 lines
8.2 KiB
JavaScript
282 lines
8.2 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
/* 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 strict";
|
|
|
|
/**
|
|
* Given the initialization data (sizes and information about
|
|
* each DOM node) this worker sends back the arrays representing
|
|
* vertices, texture coords, colors, indices and all the needed data for
|
|
* rendering the DOM visualization mesh.
|
|
*
|
|
* Used in the TiltVisualization.Presenter object.
|
|
*/
|
|
self.onmessage = function TWC_onMessage(event)
|
|
{
|
|
let data = event.data;
|
|
let maxGroupNodes = parseInt(data.maxGroupNodes);
|
|
let style = data.style;
|
|
let texWidth = data.texWidth;
|
|
let texHeight = data.texHeight;
|
|
let nodesInfo = data.nodesInfo;
|
|
|
|
let mesh = {
|
|
allVertices: [],
|
|
groups: [],
|
|
width: 0,
|
|
height: 0
|
|
};
|
|
|
|
let vertices;
|
|
let texCoord;
|
|
let color;
|
|
let stacksIndices;
|
|
let wireframeIndices;
|
|
let index;
|
|
|
|
// seed the random function to get the same values each time
|
|
// we're doing this to avoid ugly z-fighting with overlapping nodes
|
|
self.random.seed(0);
|
|
|
|
// go through all the dom nodes and compute the verts, texcoord etc.
|
|
for (let n = 0, len = nodesInfo.length; n < len; n++) {
|
|
|
|
// check if we need to start creating a new group
|
|
if (n % maxGroupNodes === 0) {
|
|
vertices = []; // recreate the arrays used to construct the 3D mesh data
|
|
texCoord = [];
|
|
color = [];
|
|
stacksIndices = [];
|
|
wireframeIndices = [];
|
|
index = 0;
|
|
}
|
|
|
|
let info = nodesInfo[n];
|
|
let coord = info.coord;
|
|
|
|
// calculate the stack x, y, z, width and height coordinates
|
|
let z = coord.depth + coord.thickness;
|
|
let y = coord.top;
|
|
let x = coord.left;
|
|
let w = coord.width;
|
|
let h = coord.height;
|
|
|
|
// the maximum texture size slices the visualization mesh where needed
|
|
if (x + w > texWidth) {
|
|
w = texWidth - x;
|
|
}
|
|
if (y + h > texHeight) {
|
|
h = texHeight - y;
|
|
}
|
|
|
|
x += self.random.next();
|
|
y += self.random.next();
|
|
w -= self.random.next() * 0.1;
|
|
h -= self.random.next() * 0.1;
|
|
|
|
let xpw = x + w;
|
|
let yph = y + h;
|
|
let zmt = coord.depth;
|
|
|
|
let xotw = x / texWidth;
|
|
let yoth = y / texHeight;
|
|
let xpwotw = xpw / texWidth;
|
|
let yphoth = yph / texHeight;
|
|
|
|
// calculate the margin fill color
|
|
let fill = style[info.name] || style.highlight.defaultFill;
|
|
|
|
let r = fill[0];
|
|
let g = fill[1];
|
|
let b = fill[2];
|
|
let g10 = r * 1.1;
|
|
let g11 = g * 1.1;
|
|
let g12 = b * 1.1;
|
|
let g20 = r * 0.6;
|
|
let g21 = g * 0.6;
|
|
let g22 = b * 0.6;
|
|
|
|
// compute the vertices
|
|
vertices.push(x, y, z, /* front */ // 0
|
|
x, yph, z, // 1
|
|
xpw, yph, z, // 2
|
|
xpw, y, z, // 3
|
|
// we don't duplicate vertices for the left and right faces, because
|
|
// they can be reused from the bottom and top faces; we do, however,
|
|
// duplicate some vertices from front face, because it has custom
|
|
// texture coordinates which are not shared by the other faces
|
|
x, y, z, /* front */ // 4
|
|
x, yph, z, // 5
|
|
xpw, yph, z, // 6
|
|
xpw, y, z, // 7
|
|
x, y, zmt, /* back */ // 8
|
|
x, yph, zmt, // 9
|
|
xpw, yph, zmt, // 10
|
|
xpw, y, zmt); // 11
|
|
|
|
// compute the texture coordinates
|
|
texCoord.push(xotw, yoth,
|
|
xotw, yphoth,
|
|
xpwotw, yphoth,
|
|
xpwotw, yoth,
|
|
-1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0);
|
|
|
|
// compute the colors for each vertex in the mesh
|
|
color.push(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
g10, g11, g12,
|
|
g10, g11, g12,
|
|
g10, g11, g12,
|
|
g10, g11, g12,
|
|
g20, g21, g22,
|
|
g20, g21, g22,
|
|
g20, g21, g22,
|
|
g20, g21, g22);
|
|
|
|
let i = index; // number of vertex points, used to create the indices array
|
|
let ip1 = i + 1;
|
|
let ip2 = ip1 + 1;
|
|
let ip3 = ip2 + 1;
|
|
let ip4 = ip3 + 1;
|
|
let ip5 = ip4 + 1;
|
|
let ip6 = ip5 + 1;
|
|
let ip7 = ip6 + 1;
|
|
let ip8 = ip7 + 1;
|
|
let ip9 = ip8 + 1;
|
|
let ip10 = ip9 + 1;
|
|
let ip11 = ip10 + 1;
|
|
|
|
// compute the stack indices
|
|
stacksIndices.unshift(i, ip1, ip2, i, ip2, ip3,
|
|
ip8, ip9, ip5, ip8, ip5, ip4,
|
|
ip7, ip6, ip10, ip7, ip10, ip11,
|
|
ip8, ip4, ip7, ip8, ip7, ip11,
|
|
ip5, ip9, ip10, ip5, ip10, ip6);
|
|
|
|
// compute the wireframe indices
|
|
if (coord.thickness !== 0) {
|
|
wireframeIndices.unshift(i, ip1, ip1, ip2,
|
|
ip2, ip3, ip3, i,
|
|
ip8, i, ip9, ip1,
|
|
ip11, ip3, ip10, ip2);
|
|
}
|
|
|
|
// there are 12 vertices in a stack representing a node
|
|
index += 12;
|
|
|
|
// set the maximum mesh width and height to calculate the center offset
|
|
mesh.width = Math.max(w, mesh.width);
|
|
mesh.height = Math.max(h, mesh.height);
|
|
|
|
// check if we need to save the currently active group; this happens after
|
|
// we filled all the "slots" in a group or there aren't any remaining nodes
|
|
if (((n + 1) % maxGroupNodes === 0) || (n === len - 1)) {
|
|
mesh.groups.push({
|
|
vertices: vertices,
|
|
texCoord: texCoord,
|
|
color: color,
|
|
stacksIndices: stacksIndices,
|
|
wireframeIndices: wireframeIndices
|
|
});
|
|
mesh.allVertices = mesh.allVertices.concat(vertices);
|
|
}
|
|
}
|
|
|
|
self.postMessage(mesh);
|
|
close();
|
|
};
|
|
|
|
/**
|
|
* Utility functions for generating random numbers using the Alea algorithm.
|
|
*/
|
|
self.random = {
|
|
|
|
/**
|
|
* The generator function, automatically created with seed 0.
|
|
*/
|
|
_generator: null,
|
|
|
|
/**
|
|
* Returns a new random number between [0..1)
|
|
*/
|
|
next: function RNG_next()
|
|
{
|
|
return this._generator();
|
|
},
|
|
|
|
/**
|
|
* From http://baagoe.com/en/RandomMusings/javascript
|
|
* Johannes Baagoe <baagoe@baagoe.com>, 2010
|
|
*
|
|
* Seeds a random generator function with a set of passed arguments.
|
|
*/
|
|
seed: function RNG_seed()
|
|
{
|
|
let s0 = 0;
|
|
let s1 = 0;
|
|
let s2 = 0;
|
|
let c = 1;
|
|
|
|
if (arguments.length === 0) {
|
|
return this.seed(+new Date());
|
|
} else {
|
|
s0 = this.mash(" ");
|
|
s1 = this.mash(" ");
|
|
s2 = this.mash(" ");
|
|
|
|
for (let i = 0, len = arguments.length; i < len; i++) {
|
|
s0 -= this.mash(arguments[i]);
|
|
if (s0 < 0) {
|
|
s0 += 1;
|
|
}
|
|
s1 -= this.mash(arguments[i]);
|
|
if (s1 < 0) {
|
|
s1 += 1;
|
|
}
|
|
s2 -= this.mash(arguments[i]);
|
|
if (s2 < 0) {
|
|
s2 += 1;
|
|
}
|
|
}
|
|
|
|
let random = function() {
|
|
let t = 2091639 * s0 + c * 2.3283064365386963e-10; // 2^-32
|
|
s0 = s1;
|
|
s1 = s2;
|
|
return (s2 = t - (c = t | 0));
|
|
};
|
|
random.uint32 = function() {
|
|
return random() * 0x100000000; // 2^32
|
|
};
|
|
random.fract53 = function() {
|
|
return random() +
|
|
(random() * 0x200000 | 0) * 1.1102230246251565e-16; // 2^-53
|
|
};
|
|
return (this._generator = random);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* From http://baagoe.com/en/RandomMusings/javascript
|
|
* Johannes Baagoe <baagoe@baagoe.com>, 2010
|
|
*/
|
|
mash: function RNG_mash(data)
|
|
{
|
|
let h, n = 0xefc8249d;
|
|
|
|
data = data.toString();
|
|
for (let i = 0, len = data.length; i < len; i++) {
|
|
n += data.charCodeAt(i);
|
|
h = 0.02519603282416938 * n;
|
|
n = h >>> 0;
|
|
h -= n;
|
|
h *= n;
|
|
n = h >>> 0;
|
|
h -= n;
|
|
n += h * 0x100000000; // 2^32
|
|
}
|
|
return (n >>> 0) * 2.3283064365386963e-10; // 2^-32
|
|
}
|
|
};
|