#codevember 9 - Bezier Curve Path Animation

Developer
Pedro Cacique
Size
4,652 Kb
Views
22,264
  1. #codevember 9 - Bezier Curve Path Animation Previews
  2. #codevember 9 - Bezier Curve Path Animation HTML Codes
  3. #codevember 9 - Bezier Curve Path Animation CSS Codes
  4. #codevember 9 - Bezier Curve Path Animation JS Codes

How do I make an #codevember 9 - bezier curve path animation?

Animation throughout a path made by bezier curves. What is a #codevember 9 - bezier curve path animation? How do you make a #codevember 9 - bezier curve path animation? This script and codes were developed by Pedro Cacique on 20 November 2022, Sunday.

#codevember 9 - Bezier Curve Path Animation Previews
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#codevember 9 - Bezier Curve Path Animation - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>#codevember 9 - Bezier Curve Path Animation</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <header> <div> <p> <input type="checkbox" id="sp" checked/> <label for="sp">Show Points</label> </p> <p> <input type="checkbox" id="sc" checked/> <label for="sc">Show Curves</label> </p> <p>Speed: <br> <input type="number" id="duration" value="1" /> </p> <p> <button id="butAnimate" onclick="startAnimation()">Animate Element</button> <button id="butAnimate" onclick="reset()" class="reset">Reset</button> </p> </div> <p> Double click to add curve </p> </header> <canvas id="canvas"></canvas> <footer> <div>Made by <a href="http://www.pedrocacique.com">Cacique</a></div> <div> <a href="http://codevember.xyz/about">#codevember</a> <a href="http://codevember.xyz/day/9">#day9</a> </div> </footer> <script src="js/index.js"></script>
</body>
</html>

#codevember 9 - Bezier Curve Path Animation - Script Codes CSS Codes

body { margin: 0; font-family: Helvetica, Arial; font-weight: 100; overflow: hidden;
}
canvas { background-color: #101010;
}
footer { position: fixed; bottom: 0; height: 20px; width: 100%; display: flex; justify-content: space-around; align-items: center; background-color: #202020; color: #fff; font-size: 0.7em;
}
footer a { color: #f0f0f0;
}
header { color: #fff; padding: 10px; position: fixed; width: 100%; display: flex; justify-content: center; align-items: center; flex-flow: column wrap;
}
header div{ width: 100%; display: flex; justify-content: center; align-items: center;
}
header p { margin: 10px;
}
input[type="number"] { padding: 5px; border: none; border-radius: 4px; width: 55px;
}
button { border: none; border-radius: 4px; padding: 5px; background-color: #f99500;
}
button:focus { outline: none;
}
.reset { background-color: #d85656;
}

#codevember 9 - Bezier Curve Path Animation - Script Codes JS Codes

//---------- MAIN FUNCTION ----------
function init() { element = new Element(new Point(100, 100, { fillColor: "#52c93a", lineColor: null, shape: "circle", size: 20 })); element.path.push(new BezierCurve(new Point(120, 100), new Point(150, 220), new Point(300, 200), new Point(300, 300)));
}
function animate() { ctx.clearRect(0, 0, cw, ch); if (showCurves) { for (var i = 0; i < element.path.length; i++) { element.path[i].draw(ctx); element.path[i].showPoints = showPoints; element.path[i].showLines = showPoints; } } element.animate(ctx); requestAnimationFrame(animate);
}
//-----------------------------------
var canvas, ctx, cw, ch;
var draggingCurves, draggingPoints;
var FPS = 60,   duration = 3, isAnimating = false;
var showPoints = true, showCurves = true;
var element;
var requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) { return setTimeout(callback, FPS);
};
window.onload = function () { initAll(); animate(); document.getElementById('sp').addEventListener('change', function () { showPoints = document.getElementById('sp').checked; }); document.getElementById('sc').addEventListener('change', function () { showCurves = document.getElementById('sc').checked; });
}
window.onresize = function () { initCanvas(); ctx.clearRect(0, 0, cw, ch);
};
function initAll() { initCanvas(); init(); ctx.clearRect(0, 0, cw, ch);
}
function initCanvas() { canvas = document.getElementById('canvas'); ctx = canvas.getContext('2d'); cw = window.innerWidth; ch = window.innerHeight; canvas.width = cw; canvas.height = ch; canvas.addEventListener("mousedown", onMouseDown); canvas.addEventListener("mouseup", onMouseUp); canvas.addEventListener("dblclick", onDblClick);
}
function onDblClick(evt) { var p1 = element.path[element.path.length - 1].endPoint.clone(); var lcp2 = element.path[element.path.length - 1].controlPoint2.clone(); var p2 = getMousePos(canvas, evt); cp1 = new Point(p1.x + (p2.x - p1.x) / 2, p1.y + (p1.y - lcp2.y)); cp2 = new Point(p1.x + (p2.x - p1.x) / 2, p2.y); element.path.push(new BezierCurve(p1, cp1, cp2, p2));
}
function startAnimation(evt) {  element.current = 0; duration = parseInt(document.getElementById('duration').value); element.time = 0; element.isAnimating = true;
}
function reset() { initAll(); animate();
}
function onMouseDown(evt) { var p = getMousePos(canvas, evt); var points = ["startPoint", "endPoint", "controlPoint1", "controlPoint2"]; draggingCurves = []; draggingPoints = []; for (var i = 0; i < element.path.length; i++) { for (var j = 0; j < points.length; j++) { if (p.near(element.path[i][points[j]], element.path[i][points[j]].size)) { draggingCurves.push(i); draggingPoints.push(points[j]); } } } if (draggingCurves.length != -1) canvas.addEventListener("mousemove", onMouseMove);
}
function onMouseUp(evt) { canvas.removeEventListener("mousemove", onMouseMove);
}
function onMouseMove(evt) { var p = getMousePos(canvas, evt); for (var i = 0; i < draggingCurves.length; i++) { element.path[draggingCurves[i]][draggingPoints[i]].x = p.x; element.path[draggingCurves[i]][draggingPoints[i]].y = p.y; }
}
function getMousePos(canvas, evt) { var rect = canvas.getBoundingClientRect(); return new Point( evt.clientX - rect.left, evt.clientY - rect.top, 0 );
}
//----------- Prototypes -------------
//----------- POINT -----------
function Point(x, y, properties) { this.x = (x == null) ? 0 : x; this.y = (y == null) ? 0 : y; this.lineColor = "#fff"; this.fillColor = null; this.shape = "square"; this.size = 5; this.time = 0; this.lineWidth = 1; if (properties != null) this.setProperties(properties);
}
Point.prototype.distance = function (p2) { //Euclidean Disctance return Math.sqrt(Math.pow(this.x - p2.x, 2) + Math.pow(this.y - p2.y, 2) + Math.pow(this.z - p2.z, 2));
}
Point.prototype.manhatan = function (p2) { return (p2.x - p1.x) + (p2.y - p1.y) + (p2.z - p1.z);
}
Point.prototype.setProperties = function (properties) { for (var p in properties) { this[p] = properties[p]; }
}
Point.prototype.clone = function () { var copy = new Point(); for (var attr in this) { if (this.hasOwnProperty(attr)) copy[attr] = this[attr]; } return copy;
}
Point.prototype.equals = function (p2) { return (this.x == p2.x && this.y == p2.y);
}
Point.prototype.near = function (p2, offset) { return (this.x > p2.x - offset && this.x < p2.x + offset && this.y > p2.y - offset && this.y < p2.y + offset)
}
Point.prototype.draw = function (ctx) { ctx.beginPath(); if (this.lineColor != null) { ctx.strokeStyle = this.lineColor; ctx.lineWidth = this.lineWidth; } if (this.fillColor == null) this.fillColor = "rgba(0,0,0,0)"; ctx.fillStyle = this.fillColor; if (this.shape == "circle") ctx.arc(this.x, this.y, this.size / 2, 0, Math.PI * 2); else ctx.rect(this.x - this.size / 2, this.y - this.size / 2, this.size, this.size); if (this.lineColor != null) ctx.stroke(); ctx.fill();
}
Point.prototype.trace = function () { console.log("(" + this.x + ", " + this.y + ")");
}
//----------- RECT -----------
function Rect(p1, p2, properties) { this.p1 = (p1 == null) ? new Point() : p1; this.p2 = (p2 == null) ? new Point(10, 0) : p2; this.lineColor = "#fff"; this.lineWidth = 1; if (properties != null) this.setProperties(properties);
}
Rect.prototype.setProperties = function (properties) { for (var p in properties) { this[p] = properties[p]; }
}
Rect.prototype.clone = function () { var copy = new Rect(); for (var attr in this) { if (this.hasOwnProperty(attr)) copy[attr] = this[attr]; } return copy;
}
Rect.prototype.draw = function (ctx) { ctx.beginPath(); ctx.lineWidth = this.lineWidth; ctx.strokeStyle = this.lineColor; ctx.moveTo(this.p1.x, this.p1.y); ctx.lineTo(this.p2.x, this.p2.y); ctx.stroke();
}
Rect.prototype.trace = function () { console.log(this);
}
//----------- BEZIER CURVE -----------
function BezierCurve(startPoint, controlPoint1, controlPoint2, endPoint, properties) { this.startPoint = (startPoint != null) ? startPoint : (new Point(100, 200)); this.endPoint = (endPoint != null) ? endPoint : (new Point(200, 100)); this.controlPoint1 = (controlPoint1 != null) ? controlPoint1 : (new Point(150, 200)); this.controlPoint2 = (controlPoint2 != null) ? controlPoint2 : (new Point(200, 150)); this.color = "#fff"; this.lineWidth = 1; this.showLines = true; this.showPoints = true; var prop1 = { shape: "circle", lineColor: "#ffd460", fillColor: "#ffd460", size: 8 }; var prop1b = { shape: "circle", lineColor: "#ffd460", size: 8 }; var prop2 = { shape: "square", lineColor: "#68ccff", fillColor: "#68ccff", size: 8 }; this.startPoint.setProperties(prop1b); this.endPoint.setProperties(prop1); this.controlPoint1.setProperties(prop2); this.controlPoint2.setProperties(prop2); if (properties != null) this.setProperties(properties);
}
BezierCurve.prototype.draw = function (ctx) { if (this.showLines) { this.startPoint.draw(ctx); this.endPoint.draw(ctx); this.controlPoint1.draw(ctx); this.controlPoint2.draw(ctx); if (this.showPoints) { var r1 = new Rect(this.startPoint, this.controlPoint1, { lineColor: this.controlPoint1.lineColor, lineWidth: this.lineWidth / 2 }); r1.draw(ctx); var r2 = new Rect(this.endPoint, this.controlPoint2, { lineColor: this.controlPoint2.lineColor, lineWidth: this.lineWidth / 2 }); r2.draw(ctx); } } ctx.beginPath(); ctx.strokeStyle = this.color; ctx.lineWidth = this.lineWidth; ctx.moveTo(this.startPoint.x, this.startPoint.y); ctx.bezierCurveTo(this.controlPoint1.x, this.controlPoint1.y, this.controlPoint2.x, this.controlPoint2.y, this.endPoint.x, this.endPoint.y); ctx.stroke();
}
BezierCurve.prototype.setProperties = function (properties) { for (var p in properties) { this[p] = properties[p]; }
}
BezierCurve.prototype.clone = function () { var copy = new BezierCurve(); for (var attr in this) { if (this.hasOwnProperty(attr)) copy[attr] = this[attr]; } return copy;
}
BezierCurve.prototype.trace = function () { console.log(this);
}
BezierCurve.prototype.getPos = function (t) { var point = new Point(); t2 = t * t t3 = t2 * t mt = 1 - t mt2 = mt * mt mt3 = mt2 * mt point.x = mt3 * this.startPoint.x + 3 * mt2 * t * this.controlPoint1.x + 3 * mt * t2 * this.controlPoint2.x + t3 * this.endPoint.x; point.y = mt3 * this.startPoint.y + 3 * mt2 * t * this.controlPoint1.y + 3 * mt * t2 * this.controlPoint2.y + t3 * this.endPoint.y; return point;
}
//------------------ ELEMENT ------------------
function Element(position, path) { this.position = (position != null) ? position : (new Point(100, 100)); this.path = []; if (path != null) this.path = path; this.isAnimating = false; this.current = 0;
}
Element.prototype.draw = function (ctx) { this.position.draw(ctx);
}
Element.prototype.animate = function (ctx) { if (this.isAnimating) {    this.time += 1 / (duration * FPS); if (this.time >= 1) { if (this.current < this.path.length - 1) { this.time = 0; this.current++; } else { this.isAnimating = false; this.time = 1; } } var p = this.path[this.current].getPos(this.time); this.position.x = p.x; this.position.y = p.y; } this.draw(ctx);
}
#codevember 9 - Bezier Curve Path Animation - Script Codes
#codevember 9 - Bezier Curve Path Animation - Script Codes
Home Page Home
Developer Pedro Cacique
Username phcacique
Uploaded November 20, 2022
Rating 3
Size 4,652 Kb
Views 22,264
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