three.fbo-helper
Version:
FrameBuffer Object inspector for three.js
52 lines (28 loc) • 899 B
JavaScript
import { Curve } from '../core/Curve';
/**************************************************************
* Line
**************************************************************/
function LineCurve( v1, v2 ) {
this.v1 = v1;
this.v2 = v2;
}
LineCurve.prototype = Object.create( Curve.prototype );
LineCurve.prototype.constructor = LineCurve;
LineCurve.prototype.isLineCurve = true;
LineCurve.prototype.getPoint = function ( t ) {
if ( t === 1 ) {
return this.v2.clone();
}
var point = this.v2.clone().sub( this.v1 );
point.multiplyScalar( t ).add( this.v1 );
return point;
};
// Line curve is linear, so we can overwrite default getPointAt
LineCurve.prototype.getPointAt = function ( u ) {
return this.getPoint( u );
};
LineCurve.prototype.getTangent = function( t ) {
var tangent = this.v2.clone().sub( this.v1 );
return tangent.normalize();
};
export { LineCurve };