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https://github.com/SerenityOS/serenity
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Base: Add rotateX, rotateY, rotateZ and matrix3d examples for transform
This commit is contained in:
Luke Wilde
Andreas Kling
parent
dbe12662b8
commit
082abf9998
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@ -11,7 +11,7 @@
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.container {
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display: inline-flex;
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flex-direction: column;
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width: 60em;
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width: 95em;
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}
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.example {
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@ -23,7 +23,7 @@
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background-color: #ccc;
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}
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.example > style {
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.example > style, .example > noscript > style {
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display: block;
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font-family: monospace;
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margin: 0 3em 0 10em;
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@ -49,6 +49,7 @@
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<p>This is based on the examples for <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/transform-origin">transform-origin</a>
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on MDN</p>
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<div class="container">
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<h1>css-transforms-1</h1>
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<div class="example">
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<div>
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<div id="box1" class="box"> </div>
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@ -164,6 +165,243 @@
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transform-origin: 100% -30%;
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}</style>
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</div>
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<h1>css-transforms-2</h1>
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<div class="example">
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<div>
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<div id="box13" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box13-style">
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</style>
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<noscript>
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<style>#box13 {
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transform: rotateX(60deg);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box14" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box14-style">
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</style>
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<noscript>
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<style>#box14 {
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transform: rotateY(60deg);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box15" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box15-style">
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</style>
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<noscript>
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<style>#box15 {
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transform: rotateZ(60deg);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box16" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box16-style">
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</style>
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<noscript>
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<style>#box16 {
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transform: rotateX(60deg) rotateY(60deg) rotateZ(60deg);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box17" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box17-style">
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</style>
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<noscript>
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<style>#box17 {
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transform: matrix3d(
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1.00, 0.00, 0.00, 0.00,
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0.00, 0.50, -0.87, 0.00,
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0.00, 0.87, 0.50, 0.00,
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0.00, 0.00, 0.00, 1.00
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);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box18" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box18-style">
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</style>
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<noscript>
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<style>#box18 {
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transform: matrix3d(
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0.50, 0.00, 0.87, 0.00,
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0.00, 1.00, 0.00, 0.00,
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-0.87, 0.00, 0.50, 0.00,
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0.00, 0.00, 0.00, 1.00
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);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box19" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box19-style">
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</style>
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<noscript>
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<style>#box19 {
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transform: matrix3d(
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0.50, -0.87, 0.00, 0.00,
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0.87, 0.50, 0.00, 0.00,
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0.00, 0.00, 1.00, 0.00,
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0.00, 0.00, 0.00, 1.00
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);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<div class="example">
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<div>
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<div id="box20" class="box"> </div>
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<div class="box original"> </div>
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</div>
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<style id="box20-style">
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</style>
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<noscript>
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<style>#box20 {
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transform: matrix3d(
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0.25, -0.43, 0.87, 0.00,
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0.81, -0.40, -0.43, 0.00,
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0.53, 0.81, 0.25, 0.00,
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0.00, 0.00, 0.00, 1.00
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);
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transform-origin: 50% 50%;
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}</style>
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</noscript>
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</div>
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<script>
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"use strict";
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const box13 = document.getElementById("box13");
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const box13Style = document.getElementById("box13-style");
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const box14 = document.getElementById("box14");
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const box14Style = document.getElementById("box14-style");
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const box15 = document.getElementById("box15");
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const box15Style = document.getElementById("box15-style");
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const box16 = document.getElementById("box16");
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const box16Style = document.getElementById("box16-style");
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const box17 = document.getElementById("box17");
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const box17Style = document.getElementById("box17-style");
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const box18 = document.getElementById("box18");
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const box18Style = document.getElementById("box18-style");
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const box19 = document.getElementById("box19");
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const box19Style = document.getElementById("box19-style");
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const box20 = document.getElementById("box20");
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const box20Style = document.getElementById("box20-style");
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let rotationAmount = 0;
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function matrixMultiply(left, right) {
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// This assumes left and right are the same size for simplicity.
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const length = left.length;
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const product = [
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[],
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[],
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[],
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[],
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]
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for (let i = 0; i < length; ++i) {
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for (let j = 0; j < length; ++j) {
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product[i][j] = left[i][0] * right[0][j] + left[i][1] * right[1][j] + left[i][2] * right[2][j] + left[i][3] * right[3][j];
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}
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}
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return product;
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}
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function rotationMatrix(xAxis, yAxis, zAxis, angle) {
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const radians = angle * (Math.PI / 180);
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const sine = Math.sin(radians);
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const cosine = Math.cos(radians);
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const t = 1 - cosine;
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return [
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[t * xAxis * xAxis + cosine, t * xAxis * yAxis - zAxis * sine, t * xAxis * zAxis + yAxis * sine, 0],
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[t * xAxis * yAxis + zAxis * sine, t * yAxis * yAxis + cosine, t * yAxis * zAxis - xAxis * sine, 0],
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[t * xAxis * zAxis - yAxis * sine, t * yAxis * zAxis + xAxis * sine, t * zAxis * zAxis + cosine, 0],
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[0, 0, 0, 1],
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];
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}
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function setStyle(element, styleElement, transform) {
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styleElement.innerText = `
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#${element.id} { transform: ${transform}; transform-origin: 50% 50%; }
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`
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}
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function matrixRowToString(matrixRow, endWithComma = true) {
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return `${matrixRow[0].toFixed(2)}, ${matrixRow[1].toFixed(2)}, ${matrixRow[2].toFixed(2)}, ${matrixRow[3].toFixed(2)}${endWithComma ? ',' : ''}`;
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}
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function setMatrix3dStyle(element, styleElement, matrix) {
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styleElement.innerText = `#${element.id} { transform: matrix3d(${matrixRowToString(matrix[0])} ${matrixRowToString(matrix[1])} ${matrixRowToString(matrix[2])} ${matrixRowToString(matrix[3], false)}); transform-origin: 50% 50%; }`;
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}
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function animateCssTransformsTwo() {
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rotationAmount++;
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rotationAmount %= 360;
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setStyle(box13, box13Style, `rotateX(${rotationAmount}deg)`);
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setStyle(box14, box14Style, `rotateY(${rotationAmount}deg)`);
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setStyle(box15, box15Style, `rotateZ(${rotationAmount}deg)`);
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setStyle(box16, box16Style, `rotateX(${rotationAmount}deg) rotateY(${rotationAmount}deg) rotateZ(${rotationAmount}deg)`);
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const xRotationMatrix = rotationMatrix(1, 0, 0, rotationAmount);
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const yRotationMatrix = rotationMatrix(0, 1, 0, rotationAmount);
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const zRotationMatrix = rotationMatrix(0, 0, 1, rotationAmount);
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setMatrix3dStyle(box17, box17Style, xRotationMatrix);
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setMatrix3dStyle(box18, box18Style, yRotationMatrix);
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setMatrix3dStyle(box19, box19Style, zRotationMatrix);
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setMatrix3dStyle(box20, box20Style, matrixMultiply(matrixMultiply(xRotationMatrix, yRotationMatrix), zRotationMatrix));
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requestAnimationFrame(animateCssTransformsTwo);
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}
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requestAnimationFrame(animateCssTransformsTwo);
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const xRotationMatrix = rotationMatrix(1, 0, 0, 60);
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const yRotationMatrix = rotationMatrix(0, 1, 0, 60);
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const zRotationMatrix = rotationMatrix(0, 0, 1, 60);
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</script>
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</div>
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</body>
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</html>
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