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d3_matrix2.html
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d3_matrix2.html
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<html lang="en"><head>
<title>Blockchain Animation</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css">
<style>
html {
background: #0C0019;
color:grey;
}
.container {
display: flex;
align-items: center;
justify-content: center;
}
#myBox {
/*transform: scale(1) translate(10px, 20px) rotate(30deg);*/
transform: matrix(0.3592, -0.3065, 1.2019, 0.6834, 133.3929, 155.1232);
padding: 20px;
margin: 20px;
width: 120px;
background: limegreen;
opacity: 0.3;
color: white;
font-family: sans-serif;
}
output {
display: block;
font-family: monospace;
background: #eee;
padding: 20px;
}
#thing {
transform: scale(1) skew(45deg) rotate(30deg) translate(5px, 5px);
/*transform: matrix(1.0069, 0, 0, 1.19, 1.4571 ,709.77);*/
/* transform: matrix(0.3592, -0.3065, 1.2019, 0.6834, 133.3929, 155.1232)*/
/* transform: scale(1) skew(45deg) translate(5px, 5px);*/
}
</style>
</head>
<body>
<div id="thing">a</div>
<script>
var el = document.getElementById("thing");
var st = window.getComputedStyle(el, null);
var tr = st.getPropertyValue("-webkit-transform") ||
st.getPropertyValue("-moz-transform") ||
st.getPropertyValue("-ms-transform") ||
st.getPropertyValue("-o-transform") ||
st.getPropertyValue("transform") ||
"FAIL";
// With rotate(30deg)...
// matrix(0.866025, 0.5, -0.5, 0.866025, 0px, 0px)
console.log('Matrix: ' + tr);
document.write('Matrix: ' + tr+'</br>');
// rotation matrix - http://en.wikipedia.org/wiki/Rotation_matrix
var values = tr.split('(')[1].split(')')[0].split(',');
var a = values[0];
var b = values[1];
var c = values[2];
var d = values[3];
var scale = Math.sqrt(a*a + b*b);
console.log('Scale: ' + scale);
document.write('Scale: ' + scale+'</br>');
// arc sin, convert from radians to degrees, round
var sin = b/scale;
// next line works for 30deg but not 130deg (returns 50);
// var angle = Math.round(Math.asin(sin) * (180/Math.PI));
var angle = Math.round(Math.atan2(b, a) * (180/Math.PI));
console.log('Rotate: ' + angle + 'deg');
document.write('Rotate: ' + angle + 'deg'+'</br>');
</script>
<div id="myBox">
My Box.
</div>
<output id="output"></output>
<script>
var e = "";
var style = "";
e = document.getElementById("myBox");
style = window.getComputedStyle(e).getPropertyValue("transform");
document.getElementById("output").innerText=style;
</script>
<script>
//Given an initial point, a slope, and length, find the next point
function findSlope(x0,y0,x1,y1){
var slope = (y1-y0)/(x1-x0);
console.log(slope);
return slope;
}
function findNextPoint(x0,y0,slope,segment_length){
var point ={};
point.x = x0+segment_length*Math.sqrt((1/(1+Math.pow(slope, 2))));
point.y = y0+slope*segment_length*Math.sqrt((1/(1+Math.pow(slope, 2))));
return point;
}
function findPerpendicularPoint(x0,y0,slope,segment_length){
var point ={};
var perpendicularSlope = -1/slope;
point.x = x0+segment_length*Math.sqrt((1/(1+Math.pow(perpendicularSlope, 2))));
point.y = y0+slope*segment_length*Math.sqrt((1/(1+Math.pow(perpendicularSlope, 2))));
return point;
}
</script>
<div class="container">
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" height="99vh" viewBox="0 0 2000 1200" enable-background="new 0 0 2000 1200" xml:space="preserve">
<g>
<!--
<linearGradient id="SVGID_41_" x1="885.7858" x2="885.9467" y1="-920.6589" y2="-787.5014" gradientTransform="matrix(0.3592 -0.3065 1.2019 0.6834 1339.3929 1550.1232)" gradientUnits="userSpaceOnUse">
<stop offset="0" style="stop-color:#FFFFFF;stop-opacity:0"></stop>
<stop offset="1" style="stop-color:#FFFFFF"></stop>
</linearGradient>
<polygon class="particlespoly" fill="url(#SVGID_41_)" points="733.6,720 683.4,767.8 491.1,643.4
555.6,608.9 " enable-background="new " opacity="0.25"></polygon>
-->
<linearGradient id="SVGID_42_" x1="1042.4587" x2="993.0236" y1="-985.6109" y2="-790.8901" gradientTransform="matrix(0.3592 -0.3065 1.2019 0.6834 1339.3929 1550.1232)" gradientUnits="userSpaceOnUse">
<stop offset="0" style="stop-color:#FFFFFF;stop-opacity:0"></stop>
<stop offset="0.2113" style="stop-color:#FFD7DA;stop-opacity:0.2113"></stop>
<stop offset="0.4448" style="stop-color:#FFB1B8;stop-opacity:0.4448"></stop>
<stop offset="0.6617" style="stop-color:#FF969F;stop-opacity:0.6617"></stop>
<stop offset="0.8535" style="stop-color:#FF8690;stop-opacity:0.8535"></stop>
<stop offset="1" style="stop-color:#FF808B"></stop>
</linearGradient>
<polygon class="particlespoly" fill="url(#SVGID_42_)" points="777.3,682.4 718.3,724 493.5,577.2
556,537.9 " enable-background="new " opacity="0.75"></polygon>
<!--
<g id="redglowparticles">
<circle cx="548.8" cy="631.8" r="1.6" fill="#FFFFFF"></circle>
<circle cx="537.9" cy="613.6" r="1.6" fill="#FFFFFF"></circle>
<circle cx="606.4" cy="676" r="1.6" fill="#FFFFFF"></circle>
<circle cx="725.1" cy="657.4" r="1.6" fill="#FFFFFF"></circle>
<circle cx="542.7" cy="596.8" r="1.6" fill="#FFFFFF"></circle>
<circle cx="623.7" cy="724.8" r="1.6" fill="#FFFFFF"></circle>
<circle cx="696.2" cy="708" r="1.6" fill="#FFFFFF"></circle>
<circle cx="611.1" cy="610.4" r="1.6" fill="#FFFFFF"></circle>
<circle cx="564.1" cy="553.5" r="1.6" fill="#FFFFFF"></circle>
<circle cx="554.2" cy="589.4" r="1.6" fill="#FFFFFF"></circle>
<circle cx="670" cy="625" r="1.6" fill="#FFFFFF"></circle>
<ellipse cx="510.9" cy="630.2" fill="#FFFFFF" rx="3.2" ry="3.2" transform="matrix(0.3162 -0.9487 0.9487 0.3162 -248.554 915.582)"></ellipse>
</g>
<linearGradient id="SVGID_43_" x1="891.1575" x2="874.2567" y1="-968.8058" y2="-817.3937" gradientTransform="matrix(0.3592 -0.3065 1.2019 0.6834 1339.3929 1550.1232)" gradientUnits="userSpaceOnUse">
<stop offset="7.030000e-02" style="stop-color:#FFFFFF;stop-opacity:0"></stop>
<stop offset="1" style="stop-color:#FFFFFF"></stop>
</linearGradient>
<polygon class="particlespoly" fill="url(#SVGID_43_)" points="672,693.7 672,760.4 492.3,643.8
492.7,577.2 " enable-background="new " opacity="0.35"></polygon>
<linearGradient id="SVGID_44_" x1="889.0407" x2="876.6129" y1="-943.0591" y2="-831.72" gradientTransform="matrix(0.3592 -0.3065 1.2019 0.6834 1339.3929 1550.1232)" gradientUnits="userSpaceOnUse">
<stop offset="0" style="stop-color:#FFFFFF;stop-opacity:0"></stop>
<stop offset="1" style="stop-color:#FFFFFF"></stop>
</linearGradient>
<polygon class="particlespoly" fill="url(#SVGID_44_)" points="672,717 672,736.3 492.3,619.6 492.7,600.5
" enable-background="new " opacity="0.35"></polygon>
<linearGradient id="SVGID_45_" x1="1096.1616" x2="1062.9662" y1="-979.2617" y2="-821.5145" gradientTransform="matrix(0.3592 -0.3065 1.2019 0.6834 1339.3929 1550.1232)" gradientUnits="userSpaceOnUse">
<stop offset="0" style="stop-color:#FFFFFF;stop-opacity:0"></stop>
<stop offset="1" style="stop-color:#FFFFFF"></stop>
</linearGradient>
<polygon class="particlespoly" fill="url(#SVGID_45_)" points="733.3,655.8 732.3,668.5 555,550.9 555,537.7
" enable-background="new " opacity="0.2"></polygon>
<g class="particlespoly" opacity="0.25">
<polygon fill="#FFFFFF" points="602.1,626.4 605.2,611 632.9,608.1 636.4,604.4 601.7,607.7 597.7,629.2 "></polygon>
<polygon fill="#FFFFFF" points="594,618.4 597.2,603 625.4,599.5 628.3,596.3 593.7,599.7 589.7,621.2 "></polygon>
</g>
-->
</g>
</svg>
</div>
<script>
</script>
</body></html>