#codevember 8 - BezierCurves

Developer
Pedro Cacique
Size
3,628 Kb
Views
12,144
  1. #codevember 8 - BezierCurves Previews
  2. #codevember 8 - BezierCurves HTML Codes
  3. #codevember 8 - BezierCurves CSS Codes
  4. #codevember 8 - BezierCurves JS Codes

How do I make an #codevember 8 - beziercurves?

An implementation of a Bezier Curve class. What is a #codevember 8 - beziercurves? How do you make a #codevember 8 - beziercurves? This script and codes were developed by Pedro Cacique on 20 November 2022, Sunday.

#codevember 8 - BezierCurves Previews
IQ Test

#codevember 8 - BezierCurves - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>#codevember 8 - BezierCurves</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <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/8">#day8</a> </div> </footer> <script src="js/index.js"></script>
</body>
</html>

#codevember 8 - BezierCurves - Script Codes CSS Codes

body{ margin:0; font-family: Helvetica, Arial; font-weight: 100;
}
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;
}

#codevember 8 - BezierCurves - Script Codes JS Codes

//---------- MAIN FUNCTION ----------
function init() { curves.push(new BezierCurve(new Point(300, 100), new Point(300, 150), new Point(380, 300), new Point(400, 100))); curves.push(new BezierCurve()); //curves.push(new BezierCurve(null,null,null,null, {showPoints:false, showLines:false}));
}
//-----------------------------------
var canvas, ctx, cw, ch;
var curves = [];
var draggingCurve, draggingPoint;
const FPS = 60;
var requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) { return setTimeout(callback, FPS);
};
window.onload = initAll;
window.onresize = initAll;
function initAll() { initCanvas(); init(); animate();
}
function animate(){ ctx.clearRect(0,0,cw,ch); for (var i = 0; i < curves.length; i++) { curves[i].draw(ctx); } requestAnimationFrame(animate);
}
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);
}
function onMouseDown(evt) { var p = getMousePos(canvas, evt); var points = ["startPoint", "endPoint", "controlPoint1", "controlPoint2"]; draggingCurve = -1; for (var i = 0; i < curves.length; i++) { for (var j = 0; j < points.length; j++) { if (p.near(curves[i][points[j]], curves[i][points[j]].size)) { draggingCurve = i; draggingPoint = points[j]; } } } if (draggingCurve != -1) canvas.addEventListener("mousemove", onMouseMove);
}
function onMouseUp(evt) { canvas.removeEventListener("mousemove", onMouseMove);
}
function onMouseMove(evt) { var p = getMousePos(canvas, evt); curves[draggingCurve][draggingPoint].x = p.x; curves[draggingCurve][draggingPoint].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.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);
}
//----------- 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 prop2 = { shape: "square", lineColor: "#68ccff", fillColor: "#68ccff", size: 8 }; this.startPoint.setProperties(prop1); 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);
}
#codevember 8 - BezierCurves - Script Codes
#codevember 8 - BezierCurves - Script Codes
Home Page Home
Developer Pedro Cacique
Username phcacique
Uploaded November 20, 2022
Rating 4
Size 3,628 Kb
Views 12,144
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