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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>SVG Design Tool</title>
<meta name="description" content="Islamic Patterns SVG Design Tool">
<meta name="license" content=" © 2020 MIT License">
<meta name="author" content="Zakrafa Design">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
@import url('https://fonts.googleapis.com/css?family=Quicksand&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');
textarea {
font-family: 'Quicksand', sans-serif;
}
html {
box-sizing: border-box;
background-color: black;
font-family: 'Quicksand', sans-serif;
}
body {
margin: 0;
}
input {
width: 3em;
border: 1px #DADADA solid;
}
input[type=number]:focus {
box-shadow: 0 0 5px #009000;
border: 1px solid #009000;
}
textarea:focus {
box-shadow: 0 0 5px #ccc;
border: 1px solid black;
}
button {
color: black;
background: #C0C0C0;
border: none;
font-family: 'Lato', sans-serif;
}
button:hover {
color: #333333;
background: #F7F7F7;
}
#controls { background-color: #008080; }
#motif {
background-color: #2F4F4F;
transition: transform .5s;
transition-timing-function: ease-in;
}
#motif:hover {
transform: scale(1.3);
}
#tile { background-color: #2f5a4f; stroke: white;}
#console { background-color: #008080; color: white; font-size: 0.8em;}
.columns {
display: flex;
flex-direction: row;
}
.columns div {
width: 50%;
padding: 1em;
display: flex;
flex-direction: column;
}
.navbar {
background-color: #2f5a4f;
display: flex;
flex-direction: row;
justify-content: flex-start;
}
.container {
color: white;
}
.header {
font-size: 1em;
margin-left: 10px;
}
.container:hover .header {
background-color: #008080;
}
.link {
display: none;
position: absolute;
background-color: white;
}
.link a {
color: #202124;
text-decoration: none;
display: block;
padding: 8px 75px 7px 15px;
font-size: .55em;
font-family: 'Lato', sans-serif;
}
body > nav > div > div > a:hover { background-color: #c8c8c9; }
.container:hover .link {
display: block;
}
</style>
</head>
<body>
<nav class="navbar">
<div class="container">
<span class="header">⋮</span>
<div class="link">
<a href="#" onclick="">File</a>
<hr>
<a href="#">Shapes</a>
<a href="#" onclick="vertices();">Vertices</a>
<a href="#">Patterns</a>
<hr>
<a href="#" onclick="unshape();" >Unshape</a>
<a href="#" onclick="reshape();" >Reshape</a>
<a href="#" onclick="mark();">Mark</a>
<a href="#" onclick="unmark();">Unmark</a>
</div>
</div>
</nav>
<section class="columns">
<div id="controls" style="width:20%;" >
<span>
<input id="input1" type="number">
<button id="mybutton1" type="button" onclick="radii();">Radii</button>
</input>
</span>
<span>
<input id="input5" type="number">
<button id="mybutton2" type="button" onclick="angler();">Angle °</button>
</input>
</span>
<br>
<span >
<button id="mybutton4" type="button"
onclick="clearPattern();">Clear</button>
</span>
</div>
<div id="motif">
<svg
id="tile"
x="0"
y="0"
viewbox="0 0 300 354"
preserveAspectRatio = "xMidYMid meet"
>
<circle id="دائرة"cx="150" cy="177" r="150"
stroke-width="1" style="visibility: visible; stroke-dasharray: 1 1;" fill="transparent" />
</svg>
</div>
<div id="console">
<form>
<textarea id="msgBox"
placeholder="SVG viewbox=0 0 300 354 circle: r=150 origin=150,177"
rows="15" cols="50" readonly>
</textarea>
<button type="button" id="resetButton" onclick="clearBox();">Reset</button>
</form>
<br>
<span>
<input id="input2" type="number">
<button id="mybutton6" type="button" onclick="D2R();">D2R</button>
</input>
</span>
<span>
<input id="input3" type="number">
<button id="mybutton7" type="button" onclick="R2D();">R2D</button>
</input>
</span>
</div>
</section>
<script>
window.onload = function(){
document.getElementById('resetButton').click(); }
// GLOBAL VARIABLES
var svgNS = "http://www.w3.org/2000/svg";
var svgRef = document.getElementById("tile");
var sliceONOFFindicator = 0;
var anglesObj = [];
function radii() {
var lc = document.getElementById("input1").value;
var msg = null;
if((lc > 100) || (lc < 2) || (lc == null)) {
alert("Can't draw undefined, < 2 or > 100 lines");
document.querySelector("#input1").value = "";
sliceONOFFindicator = 0;
return;
}
if (sliceONOFFindicator == 1) {
clearPattern();
sliceONOFFindicator = 0;
}
var angle = 360 / lc;
if (drawl (lc, angle)) {
msg = "\n" + gettime() + " " + lc + " sectors";
writeMsg(msg);
}
document.querySelector("#input1").value = "";
sliceONOFFindicator = 1;
}
// draws lines from lines input
function drawl (l, a) {
if (( l || a) == null ) { return false; }
var lindex = parseInt(l) - 1;
var degr = angle = a;
var linecount = 360 / degr;
while (lindex >= 0) {
var line = document.createElementNS(svgNS, "line");
line.setAttribute("stroke", "white");
line.setAttribute("stroke-width", 2);
line.setAttribute("x1", 150);
line.setAttribute("y1", 177);
line.setAttribute("x2", 300);
line.setAttribute("y2", 177);
line.setAttribute("transform-origin", "center");
line.setAttribute("transform", "rotate" + "(" + angle + ")");
svgRef.appendChild(line);
var title = document.createElementNS(svgNS, "title");
title.textContent = "Line " + (linecount - lindex);
line.appendChild(title);
pointify(angle);
lindex--;
angle += degr;
}
return true;
}
// draws lines from angle input
function draw (l, a) {
if (( l || a) == null ) { return false; }
var lindex = parseInt(l) - 1;
var degr = angle = parseInt(a);
var linecount = 360 / degr;
while (lindex >= 0) {
var line = document.createElementNS(svgNS, "line");
line.setAttribute("stroke", "white");
line.setAttribute("stroke-width", 2);
line.setAttribute("x1", 150);
line.setAttribute("y1", 177);
line.setAttribute("x2", 300);
line.setAttribute("y2", 177);
line.setAttribute("transform-origin", "center");
line.setAttribute("transform", "rotate" + "(" + angle + ")");
svgRef.appendChild(line);
var title = document.createElementNS(svgNS, "title");
title.textContent = "Line " + (linecount - lindex);
line.appendChild(title);
pointify(angle);
lindex--;
angle += degr;
}
return true;
}
function writeMsg(msg) {
if (msg == null) { return false;}
var obj=document.getElementById('msgBox');
var txt=document.createTextNode(msg);
obj.appendChild(txt);
return true;
}
function clearPattern() {
// clear lines from shapes
var list = document.querySelectorAll('line');
var count = list.length;
for (i = 0; i < count; i++) {
list[i].remove();
}
//clear markers
var markers = document.querySelectorAll('circle[id^="point"]');
if ( markers ) {
var marker_count = markers.length;
for (i = 0; i < marker_count; i++) {
markers[i].remove();
}
}
// clear control boxes
document.getElementById('input1').value = "";
document.getElementById('input5').value = "";
// clear circumference coordinates
anglesObj = [];
var msg = "\n" + gettime() + " CLR";
writeMsg(msg);
}
function clearBox() {
document.getElementById('msgBox').innerHTML = "";
}
function gettime() {
var today = new Date();
var time = today.getHours() + ":" + today.getMinutes() + ":" + today.getSeconds();
return time;
}
function D2R() {
var obj = document.getElementById('input2');
var angle = obj.value;
if ((angle > 360) || (angle < -360)) { alert("angle must be between 360 and -360 degrees"); }
var radians = degrees_to_radians(angle);
var msg = "\n" + gettime() + " " + angle + " degrees = " + radians + " radians";
writeMsg(msg);
obj.value = "";
}
function R2D() {
var obj = document.getElementById('input3');
var radians = obj.value;
if ((radians > 6.283185307179586) || (radians < -6.283185307179586)) { alert("radians must be between +-6.2831"); }
var angle = radians_to_degrees(radians);
var msg = "\n" + gettime() + " " + radians + " radians = " + angle + " degrees";
writeMsg(msg);
obj.value = "";
}
function degrees_to_radians(degrees) {
var pi = Math.PI;
return degrees * (pi/180);
}
function radians_to_degrees(radians) {
var pi = Math.PI;
return radians * (180/pi);
}
function validate_angle(angle) {
if (angle % 1 != 0) {
alert("\u2220 must be a whole number not including 0");
sliceONOFFindicator = 0;
return false;
}
if((angle > 180) || (angle < 0) ) {
alert("\u2220 must be between 0° and 180°");
sliceONOFFindicator = 0;
return false;
}
if ((360/angle) % 1 != 0) {
alert("360° / angle : quotient must be an integer");
sliceONOFFindicator = 0;
return false;
}
return true;
}
// calculate lines based on angle input
function angler() {
var angle = document.getElementById("input5").value;
var msg = null;
if (validate_angle(angle) == false) {
clearPattern();
return false; }
if (sliceONOFFindicator == 1) {
clearPattern();
sliceONOFFindicator = 0;
}
var lc = 360 / angle;
if (draw (lc, angle)) {
msg = "\n" + gettime() + " angle: " + angle + "° " + lc + " sectors";
writeMsg(msg);
}
document.querySelector("#input5").value = "";
sliceONOFFindicator = 1;
}
// points on a circle
function pointify(angle) {
if ( angle == null ) { return false;}
var x = 150 + (150 * Math.cos(degrees_to_radians(angle)));
var y = 177 + (150 * Math.sin(degrees_to_radians(angle)));
anglesObj.push([ angle, Math.round(x), Math.round(y) ]);
return true;
}
function vertices() {
if (anglesObj == null ) {
alert("No vertices to display");
return;
}
var msg = "";
var angles_indx = 0;
var x_coord = 0;
var y_coord = 0;
var alen = anglesObj.length;
var angle = 0;
const x_italic = '\u{1d465}';
const y_italic = '\u{1d466}';
const angle_symbol = '\u{2220}';
msg = "\n" + gettime() + " Vertices List:";
writeMsg(msg);
if (anglesObj.length == 0 ) {
msg = "\n Vertices array is empty";
writeMsg(msg);
}
for (angles_indx = 0; angles_indx < alen; angles_indx++) {
angle = anglesObj[angles_indx][0].toFixed(2);
x_coord = anglesObj[angles_indx][1];
y_coord = anglesObj[angles_indx][2];
msg = "\nLine " + (angles_indx + 1) + " " + angle_symbol + ": " + angle + " " + x_italic + ": " + x_coord + " " + y_italic + ": " + y_coord;
writeMsg(msg);
}
return true;
}
function unshape () {
var obj = document.getElementById('دائرة').style.visibility = "hidden";
return true;
}
function reshape () {
var obj = document.getElementById('دائرة').style.visibility = "visible";
return true;
}
function unmark () {
if (anglesObj.length == 0) { alert("No vertices!"); return false; }
var indx = 0;
var pointindx = "";
len=anglesObj.length;
while(indx<len) {
pointindx = 'point' + (indx + 1);
var pointobj = document.getElementById(pointindx);
pointobj.remove();
indx++;
}
return true;
}
function mark() {
if (anglesObj.length == 0) { alert("No vertices!"); return false; }
var indx = 0;
len=anglesObj.length;
while(indx<len) {
var circle = document.createElementNS(svgNS, "circle");
circle.setAttribute("style", 'fill: #00a2ed; stroke: #006994;' );
circle.setAttribute("cx", anglesObj[indx][1]);
circle.setAttribute("cy", anglesObj[indx][2]);
circle.setAttribute("r", 3);
circle.setAttribute("id", 'point' + (indx + 1));
svgRef.appendChild(circle);
var title = document.createElementNS(svgNS, "title");
title.textContent = "point " + (indx + 1);
circle.appendChild(title);
indx++;
}
return true;
}
</script>
</body>
</html>