Guitar string
How do I make an guitar string?
What is a guitar string? How do you make a guitar string? This script and codes were developed by Wenting Zhang on 07 November 2022, Monday.
Guitar string - Script Codes HTML Codes
<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>guitar string</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="myCanvas"></canvas> <script src="js/index.js"></script>
</body>
</html>
Guitar string - Script Codes CSS Codes
body { margin: 20px; padding: 0px;
}
canvas { background-color: #fff; margin: auto; display: block; width: 100%; height: 100%;
}
Guitar string - Script Codes JS Codes
function String(id, startPoint, endPoint) { //ctor this.canvas = document.getElementById(id); this.ctx = this.canvas.getContext('2d'); // console.dir(this.canvas); this.canvas.width = this.canvas.clientWidth; this.canvas.height = this.canvas.clientHeight; this.startPoint = startPoint; this.endPoint = endPoint; this.controlPoint = new Point(0,0); this.lastMouseX = this.controlPoint.x; this.lastMouseY = this.controlPoint.y; this.count = 0; this.damping = 0.98; this.finishWave = false; //add event listener var self = this; this.canvas.addEventListener('mousemove', function(pos) { console.dir(pos); self.mouseMove(self, pos) }, false);
}
String.prototype.drawArc = function(startPoint, thirdPoint, endPoint, ctx){ var ctx = ctx; var dy1 = thirdPoint.y - startPoint.y; var dx1 = thirdPoint.x - startPoint.x; var dy2 = endPoint.y - thirdPoint.y; var dx2 = endPoint.x - thirdPoint.x; var aSlope = dy1/dx1; var bSlope = dy2/dx2; var centerX = (aSlope*bSlope*(startPoint.y - endPoint.y) + bSlope*(startPoint.x + thirdPoint.x) - aSlope*(thirdPoint.x+endPoint.x) )/( 2* (bSlope-aSlope) ); var centerY = -1*(centerX - (startPoint.x+thirdPoint.x)/2)/aSlope + (startPoint.y+thirdPoint.y)/2; // var centerX = (aSlope*bSlope*(y0 - y2) + bSlope*(x0 + x1) // - aSlope*(x1+x2) )/( 2* (bSlope-aSlope) ); // var centerY = -1*(centerX - (x0+x1)/2)/aSlope + (y0+y1)/2; var r = dist(centerX, centerY, startPoint.x, startPoint.y) var angle = Math.atan2(centerX-startPoint.x, centerY-startPoint.y); // console.log(angle); if (!angle || this.finishWave){ ctx.beginPath(); ctx.moveTo(startPoint.x, startPoint.y); ctx.lineTo(endPoint.x, endPoint.y); // this.finishWave = true; } else if (!this.finishWave){ if( angle > Math.PI/2) { ctx.beginPath(); ctx.arc(centerX, centerY, r, Math.PI * 1.5-angle, Math.PI * 1.5 + angle, true); } else { ctx.beginPath(); ctx.arc(centerX, centerY, r, Math.PI * 1.5-angle, Math.PI * 1.5 + angle, false); } } // ctx.rect(centerX, centerY, 2, 2); // ctx.rect(startPoint.x, startPoint.y, 2, 2); // ctx.rect(endPoint.x, endPoint.y, 2, 2); ctx.stroke();
}
String.prototype.draw = function(){ // draw stuff var r = circleCenter( new Point(this.startPoint.x, this.startPoint.y), new Point(this.controlPoint.x, this.controlPoint.y), new Point(this.endPoint.x, this.endPoint.y) ).r; if( r > 600 && this.controlPoint.x > this.startPoint.x && this.controlPoint.x < this.endPoint.x ){ // console.log(r); this.drawArc(this.startPoint, this.controlPoint, this.endPoint, this.ctx); this.lastMouseX = this.controlPoint.x; this.lastMouseY = this.controlPoint.y; this.count = 0; this.finishWave = false; } else { var x = this.lastMouseX; var y = this.startPoint.y+(this.lastMouseY-this.startPoint.y) *Math.cos(this.count/5*Math.PI)*Math.pow(this.damping, this.count); if ( Math.pow(this.damping, this.count) < 0.0001) { this.finishWave = true; } var wavePoint = new Point(x, y); this.drawArc(this.startPoint, wavePoint, this.endPoint, this.ctx); this.count++; }
};
String.prototype.clear = function(){ // clear this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
};
String.prototype.update = function(){ // update
};
String.prototype.mouseMove = function(self, pos){ self.controlPoint.x = pos.layerX; self.controlPoint.y = pos.layerY;
};
/*Created By Wenting Zhang
*/
var dist = function(x, y, x0, y0){ return Math.sqrt((x -= x0) * x + (y -= y0) * y);
};
var circleCenter = function(startPoint, thirdPoint, endPoint){ var dy1 = thirdPoint.y - startPoint.y; var dx1 = thirdPoint.x - startPoint.x; var dy2 = endPoint.y - thirdPoint.y; var dx2 = endPoint.x - thirdPoint.x; var aSlope = dy1/dx1; var bSlope = dy2/dx2; var centerX = (aSlope*bSlope*(startPoint.y - endPoint.y) + bSlope*(startPoint.x + thirdPoint.x) - aSlope*(thirdPoint.x+endPoint.x) )/( 2* (bSlope-aSlope) ); var centerY = -1*(centerX - (startPoint.x+thirdPoint.x)/2)/aSlope + (startPoint.y+thirdPoint.y)/2; var r = dist(centerX, centerY, startPoint.x, startPoint.y) // return [centerX, centerY, r]; return { x: centerX, y: centerY, r: r };
}
var Point = function (x,y){ this.x=x; this.y=y;
}
window.requestAnimFrame = (function(callback) { return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) { window.setTimeout(callback, 1000 / 60); };
})();
var myString = new String('myCanvas', new Point(300, 100.5), new Point(600, 100.5));
(function animate() { // update myString.update(); // clear myString.clear(); // draw stuff // console.log("run every frame"); myString.draw(); // request new frame requestAnimFrame(function() { animate(); });
})()
Developer | Wenting Zhang |
Username | wentin |
Uploaded | November 07, 2022 |
Rating | 3 |
Size | 3,001 Kb |
Views | 16,192 |
Find the perfect freelance services for your business! Fiverr's mission is to change how the world works together. Fiverr connects businesses with freelancers offering digital services in 500+ categories. Find Developer!
Name | Size |
Responsify images | 2,140 Kb |
ResponsifyJS demo | 5,586 Kb |
Color drop animation for profession.is | 3,083 Kb |
SVG Animation | 30,040 Kb |
P5.js Tail | 1,745 Kb |
Fibonacci output | 2,014 Kb |
Pure css solution to responsive background image | 1,499 Kb |
Profession.is type transitions | 12,481 Kb |
Draw Eye Icon with Pure CSS | 1,552 Kb |
Underline svg | 1,605 Kb |
Jasper is the AI Content Generator that helps you and your team break through creative blocks to create amazing, original content 10X faster. Discover all the ways the Jasper AI Content Platform can help streamline your creative workflows. Start For Free!
Name | Username | Size |
Direction-icon | Alexandremasy | 3,323 Kb |
Airbnb Homepage | SindhujaD | 2,480 Kb |
Simple Login Form Template | Banunn | 3,571 Kb |
Login with flip 3d animation | Mariusbalaj | 3,014 Kb |
Slide out Menu | Rbiggs | 4,936 Kb |
A Pen by Theun | Tjoen | 6,152 Kb |
Toggling Divs with jQuery | Yying6 | 1,967 Kb |
Single element checkbox | Ivijaygupta | 1,996 Kb |
Prism | Pyrografix | 2,843 Kb |
Background Images | Jooonebug | 2,100 Kb |
Surf anonymously, prevent hackers from acquiring your IP address, send anonymous email, and encrypt your Internet connection. High speed, ultra secure, and easy to use. Instant setup. Hide Your IP Now!