verb-nurbs
Version:
A library for creating and manipulating NURBS surfaces and curves in many languages
73 lines (52 loc) • 1.8 kB
HTML
<html>
<head>
<title>Curve Closest Point</title>
<script src="js/verb.min.js"></script>
<script src="js/three.min.js"></script>
<script src="js/verbToThreeConversion.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="js/codemirror.js"></script>
<script src="js/javascript.js"></script>
<script src="js/threeBasic.js"></script>
<link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,300' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="css/codemirror.css">
<link rel="stylesheet" href="css/example.css">
<link rel="stylesheet" href="css/colorforth.css">
</head>
<body>
<div id="button">Show/Hide Code</div>
<div id="viewer" class="col">
<div id="title"></div>
</div>
<div id="code-container" class="col scroll-y"></div>
</body>
<script id="script">
setupScene();
var p1 = [0,0,-5], p2 = [10,0,0], p3 = [10,10,-5], p4 = [0,10,5], p5 = [5, 5, 0];
var pts = [p1, p2, p3, p4, p5];
var interpCurve = verb.geom.NurbsCurve.byPoints( pts, 3 );
addCurveToScene( interpCurve.toThreeGeometry() );
var lineMat = new THREE.LineBasicMaterial({ linewidth: 1, color: 0xaaaaaa});
var d1 = Date.now();
var pts = [];
var w = 0;
for (var i = -10; i < 20; i+=4){
for (var j = -10; j < 20; j+=4){
for (var k = -10; k < 20; k+=4){
var p0 = [i, j, k ];
pts.push(p0);
var p = interpCurve.closestPoint( p0 );
var l = new verb.geom.Line(p, p0);
addCurveToScene( l.toThreeGeometry(), lineMat );
w++;
}
}
}
addPointsToScene( pts );
var d2 = Date.now();
console.log( (d2 - d1) / w, " ms per closest pt calculation" );
renderScene();
</script>
<script src="js/example.js"></script>
</html>