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6403d662 RK |
1 | /* ***** BEGIN LICENSE BLOCK ***** |
2 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | |
3 | * | |
4 | * The contents of this file are subject to the Mozilla Public License Version | |
5 | * 1.1 (the "License"); you may not use this file except in compliance with | |
6 | * the License. You may obtain a copy of the License at | |
7 | * http://www.mozilla.org/MPL/ | |
8 | * | |
9 | * Software distributed under the License is distributed on an "AS IS" basis, | |
10 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License | |
11 | * for the specific language governing rights and limitations under the | |
12 | * License. | |
13 | * | |
14 | * The Original Code is KaiRo.at Mandelbrot, XULRunner version. | |
15 | * | |
16 | * The Initial Developer of the Original Code is | |
17 | * Robert Kaiser <kairo@kairo.at>. | |
18 | * Portions created by the Initial Developer are Copyright (C) 2008 | |
19 | * the Initial Developer. All Rights Reserved. | |
20 | * | |
21 | * Contributor(s): | |
22 | * Robert Kaiser <kairo@kairo.at> | |
23 | * | |
24 | * Alternatively, the contents of this file may be used under the terms of | |
25 | * either the GNU General Public License Version 2 or later (the "GPL"), or | |
26 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
27 | * in which case the provisions of the GPL or the LGPL are applicable instead | |
28 | * of those above. If you wish to allow use of your version of this file only | |
29 | * under the terms of either the GPL or the LGPL, and not to allow others to | |
30 | * use your version of this file under the terms of the MPL, indicate your | |
31 | * decision by deleting the provisions above and replace them with the notice | |
32 | * and other provisions required by the GPL or the LGPL. If you do not delete | |
33 | * the provisions above, a recipient may use your version of this file under | |
34 | * the terms of any one of the MPL, the GPL or the LGPL. | |
35 | * | |
36 | * ***** END LICENSE BLOCK ***** */ | |
37 | ||
eceff1c9 RK |
38 | var gColorPalette = []; |
39 | ||
6403d662 | 40 | function initSettings() { |
7727ce46 RK |
41 | recalcCoord('Cr', 'scale'); |
42 | recalcCoord('Ci', 'scale'); | |
6403d662 | 43 | } |
eceff1c9 RK |
44 | |
45 | function drawPreview() { | |
46 | let canvas = document.getElementById("mbrotPreview"); | |
47 | let context = canvas.getContext("2d"); | |
48 | ||
76a4363b RK |
49 | if (document.getElementById("imgWidth").value / |
50 | document.getElementById("imgHeight").value | |
51 | < 80 / 50) { | |
52 | canvas.height = 50; | |
53 | canvas.width = canvas.height * | |
54 | document.getElementById("imgWidth").value / | |
55 | document.getElementById("imgHeight").value; | |
56 | } | |
57 | else { | |
58 | canvas.width = 80; | |
59 | canvas.height = canvas.width * | |
60 | document.getElementById("imgHeight").value / | |
61 | document.getElementById("imgWidth").value; | |
62 | } | |
63 | ||
eceff1c9 RK |
64 | let Cr_min = parseFloat(document.getElementById("Cr_min").value); |
65 | let Cr_max = parseFloat(document.getElementById("Cr_max").value); | |
66 | if ((Cr_min < -2) || (Cr_min > 2) || | |
67 | (Cr_max < -2) || (Cr_max > 2) || (Cr_min >= Cr_max)) { | |
68 | Cr_min = -2.0; Cr_max = 1.0; | |
69 | } | |
70 | ||
71 | let Ci_min = parseFloat(document.getElementById("Ci_min").value); | |
72 | let Ci_max = parseFloat(document.getElementById("Ci_max").value); | |
73 | if ((Ci_min < -2) || (Ci_min > 2) || | |
74 | (Ci_max < -2) || (Ci_max > 2) || (Ci_min >= Ci_max)) { | |
75 | Ci_min = -2.0; Ci_max = 1.0; | |
76 | } | |
77 | ||
78 | let iterMax = gPref.getIntPref("mandelbrot.iteration_max"); | |
79 | let algorithm = gPref.getCharPref("mandelbrot.use_algorithm"); | |
80 | ||
81 | context.fillStyle = "rgba(255, 255, 255, 127)"; | |
82 | context.fillRect(0, 0, canvas.width, canvas.height); | |
83 | ||
84 | try { | |
85 | var currentPalette = gPref.getCharPref("mandelbrot.color_palette"); | |
86 | } | |
87 | catch(e) { | |
88 | var currentPalette = ''; | |
89 | } | |
90 | if (!currentPalette.length) { | |
91 | currentPalette = 'kairo'; | |
92 | } | |
93 | gColorPalette = getColorPalette(currentPalette); | |
94 | ||
95 | drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max], | |
96 | canvas, context, iterMax, algorithm); | |
97 | } | |
7727ce46 RK |
98 | |
99 | function recalcCoord(coord, target) { | |
76a4363b RK |
100 | let othercoord = (coord == 'Ci') ? 'Cr' : 'Ci'; |
101 | let owndim = (coord == 'Ci') ? 'height' : 'width'; | |
102 | let otherdim = (coord == 'Ci') ? 'width' : 'height'; | |
7727ce46 | 103 | if (target == 'scale') { |
76a4363b | 104 | var myscale = |
7727ce46 RK |
105 | parseFloat(document.getElementById(coord + '_max').value) - |
106 | parseFloat(document.getElementById(coord + '_min').value); | |
76a4363b | 107 | document.getElementById(coord + '_scale').value = roundCoord(myscale); |
7727ce46 RK |
108 | } |
109 | else if (target == 'max') { | |
76a4363b | 110 | let mymax = |
7727ce46 RK |
111 | parseFloat(document.getElementById(coord + '_min').value) + |
112 | parseFloat(document.getElementById(coord + '_scale').value); | |
76a4363b RK |
113 | document.getElementById('mandelbrot.last_image.' + coord + '_max').value = roundCoord(mymax); |
114 | var myscale = document.getElementById(coord + '_scale').value; | |
7727ce46 | 115 | } |
76a4363b RK |
116 | if (document.getElementById('syncProp').checked) { |
117 | let otherscale = myscale * | |
118 | document.getElementById('mandelbrot.image.' + otherdim).value / | |
119 | document.getElementById('mandelbrot.image.' + owndim).value; | |
120 | document.getElementById(othercoord + '_scale').value = roundCoord(otherscale); | |
121 | let othermax = | |
122 | parseFloat(document.getElementById(othercoord + '_min').value) + | |
123 | parseFloat(document.getElementById(othercoord + '_scale').value); | |
124 | document.getElementById('mandelbrot.last_image.' + othercoord + '_max').value = roundCoord(othermax); | |
125 | } | |
126 | } | |
127 | ||
128 | function checkProportions() { | |
129 | if (!document.getElementById('syncProp').checked) { | |
130 | recalcCoord('Cr', 'scale'); | |
131 | } | |
132 | } | |
133 | ||
134 | function roundCoord(floatval) { | |
135 | // We should round to 10 decimals here or so | |
136 | return floatval; | |
7727ce46 | 137 | } |