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<title>Math/Ray.js - Documentation</title>
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href="Lore.PointHelper.html#setFogDistance">setFogDistance</a></li><li data-type='method'><a href="Lore.PointHelper.html#setHSS">setHSS</a></li><li data-type='method'><a href="Lore.PointHelper.html#setHSSFromArrays">setHSSFromArrays</a></li><li data-type='method'><a href="Lore.PointHelper.html#setHue">setHue</a></li><li data-type='method'><a href="Lore.PointHelper.html#setPointScale">setPointScale</a></li><li data-type='method'><a href="Lore.PointHelper.html#setPointSize">setPointSize</a></li><li data-type='method'><a href="Lore.PointHelper.html#setPositions">setPositions</a></li><li data-type='method'><a href="Lore.PointHelper.html#setPositionsXYZ">setPositionsXYZ</a></li><li data-type='method'><a href="Lore.PointHelper.html#setPositionsXYZHSS">setPositionsXYZHSS</a></li><li data-type='method'><a href="Lore.PointHelper.html#setRGB">setRGB</a></li><li data-type='method'><a href="Lore.PointHelper.html#setSaturation">setSaturation</a></li><li data-type='method'><a href="Lore.PointHelper.html#setSize">setSize</a></li><li data-type='method'><a href="Lore.PointHelper.html#updateColor">updateColor</a></li><li data-type='method'><a href="Lore.PointHelper.html#updateColors">updateColors</a></li><li data-type='method'><a href="Lore.PointHelper.html#updateHue">updateHue</a></li><li data-type='method'><a href="Lore.PointHelper.html#updatePointSize">updatePointSize</a></li></ul></li><li><a href="Lore.ProjectionMatrix.html">ProjectionMatrix</a><ul class='methods'><li data-type='method'><a href="Lore.ProjectionMatrix.html#setOrthographic">setOrthographic</a></li><li data-type='method'><a href="Lore.ProjectionMatrix.html#setPerspective">setPerspective</a></li></ul></li><li><a href="Lore.Quaternion.html">Quaternion</a><ul class='methods'><li data-type='method'><a href="Lore.Quaternion.html#.add">add</a></li><li data-type='method'><a href="Lore.Quaternion.html#.conjugate">conjugate</a></li><li data-type='method'><a href="Lore.Quaternion.html#.dot">dot</a></li><li data-type='method'><a href="Lore.Quaternion.html#.fromMatrix">fromMatrix</a></li><li data-type='method'><a href="Lore.Quaternion.html#.inverse">inverse</a></li><li data-type='method'><a href="Lore.Quaternion.html#.multiply">multiply</a></li><li data-type='method'><a href="Lore.Quaternion.html#.multiplyScalar">multiplyScalar</a></li><li data-type='method'><a href="Lore.Quaternion.html#.normalize">normalize</a></li><li data-type='method'><a href="Lore.Quaternion.html#.slerp">slerp</a></li><li data-type='method'><a href="Lore.Quaternion.html#.subtract">subtract</a></li><li data-type='method'><a href="Lore.Quaternion.html#add">add</a></li><li data-type='method'><a href="Lore.Quaternion.html#clone">clone</a></li><li data-type='method'><a href="Lore.Quaternion.html#conjugate">conjugate</a></li><li data-type='method'><a href="Lore.Quaternion.html#dot">dot</a></li><li data-type='method'><a href="Lore.Quaternion.html#equals">equals</a></li><li data-type='method'><a href="Lore.Quaternion.html#getW">getW</a></li><li data-type='method'><a href="Lore.Quaternion.html#getX">getX</a></li><li data-type='method'><a href="Lore.Quaternion.html#getY">getY</a></li><li data-type='method'><a href="Lore.Quaternion.html#getZ">getZ</a></li><li data-type='method'><a href="Lore.Quaternion.html#inverse">inverse</a></li><li data-type='method'><a href="Lore.Quaternion.html#length">length</a></li><li data-type='method'><a href="Lore.Quaternion.html#lengthSq">lengthSq</a></li><li data-type='method'><a href="Lore.Quaternion.html#lookAt">lookAt</a></li><li data-type='method'><a href="Lore.Quaternion.html#multiplyA">multiplyA</a></li><li data-type='method'><a href="Lore.Quaternion.html#multiplyB">multiplyB</a></li><li data-type='method'><a href="Lore.Quaternion.html#multiplyScalar">multiplyScalar</a></li><li data-type='method'><a href="Lore.Quaternion.html#normalize">normalize</a></li><li data-type='method'><a href="Lore.Quaternion.html#rotateX">rotateX</a></li><li data-type='method'><a href="Lore.Quaternion.html#rotateY">rotateY</a></li><li data-type='method'><a href="Lore.Quaternion.html#rotateZ">rotateZ</a></li><li data-type='method'><a href="Lore.Quaternion.html#set">set</a></li><li data-type='method'><a href="Lore.Quaternion.html#setFromAxisAngle">setFromAxisAngle</a></li><li data-type='method'><a href="Lore.Quaternion.html#setFromMatrix">setFromMatrix</a></li><li data-type='method'><a href="Lore.Quaternion.html#setFromUnitVectors">setFromUnitVectors</a></li><li data-type='method'><a href="Lore.Quaternion.html#setW">setW</a></li><li data-type='method'><a href="Lore.Quaternion.html#setX">setX</a></li><li data-type='method'><a href="Lore.Quaternion.html#setY">setY</a></li><li data-type='method'><a href="Lore.Quaternion.html#setZ">setZ</a></li><li data-type='method'><a href="Lore.Quaternion.html#subtract">subtract</a></li><li data-type='method'><a href="Lore.Quaternion.html#toRotationMatrix">toRotationMatrix</a></li><li data-type='method'><a href="Lore.Quaternion.html#toString">toString</a></li></ul></li><li><a href="Lore.RadixSort.html">RadixSort</a><ul class='methods'><li data-type='method'><a href="Lore.RadixSort.html#initHistograms">initHistograms</a></li><li data-type='method'><a href="Lore.RadixSort.html#lsbPass">lsbPass</a></li><li data-type='method'><a href="Lore.RadixSort.html#msbPass">msbPass</a></li><li data-type='method'><a href="Lore.RadixSort.html#pass">pass</a></li><li data-type='method'><a href="Lore.RadixSort.html#sort">sort</a></li></ul></li><li><a href="Lore.Ray.html">Ray</a><ul class='methods'><li data-type='method'><a href="Lore.Ray.html#applyProjection">applyProjection</a></li><li data-type='method'><a href="Lore.Ray.html#closestPointToPoint">closestPointToPoint</a></li><li data-type='method'><a href="Lore.Ray.html#copyFrom">copyFrom</a></li><li data-type='method'><a href="Lore.Ray.html#distanceSqToPoint">distanceSqToPoint</a></li></ul></li><li><a href="Lore.Raycaster.html">Raycaster</a><ul class='methods'><li data-type='method'><a href="Lore.Raycaster.html#set">set</a></li></ul></li><li><a href="Lore.Renderer.html">Renderer</a><ul class='methods'><li data-type='method'><a href="Lore.Renderer.html#animate">animate</a></li><li data-type='method'><a href="Lore.Renderer.html#createGeometry">createGeometry</a></li><li data-type='method'><a href="Lore.Renderer.html#disableContextMenu">disableContextMenu</a></li><li data-type='method'><a href="Lore.Renderer.html#getDevicePixelRatio">getDevicePixelRatio</a></li><li data-type='method'><a href="Lore.Renderer.html#getHeight">getHeight</a></li><li data-type='method'><a href="Lore.Renderer.html#getWidth">getWidth</a></li><li data-type='method'><a href="Lore.Renderer.html#init">init</a></li><li data-type='method'><a href="Lore.Renderer.html#setClearColor">setClearColor</a></li><li data-type='method'><a href="Lore.Renderer.html#setMaxFps">setMaxFps</a></li><li data-type='method'><a href="Lore.Renderer.html#updateViewport">updateViewport</a></li></ul></li><li><a href="Lore.Shader.html">Shader</a></li><li><a href="Lore.SphericalCoords.html">SphericalCoords</a><ul class='methods'><li data-type='method'><a href="Lore.SphericalCoords.html#clone">clone</a></li><li data-type='method'><a href="Lore.SphericalCoords.html#limit">limit</a></li><li data-type='method'><a href="Lore.SphericalCoords.html#secure">secure</a></li><li data-type='method'><a href="Lore.SphericalCoords.html#set">set</a></li><li data-type='method'><a href="Lore.SphericalCoords.html#setFromVector">setFromVector</a></li><li data-type='method'><a href="Lore.SphericalCoords.html#toString">toString</a></li></ul></li><li><a href="Lore.Statistics.html">Statistics</a><ul class='methods'><li data-type='method'><a href="Lore.Statistics.html#.getPercentile">getPercentile</a></li><li data-type='method'><a href="Lore.Statistics.html#.normalize">normalize</a></li><li data-type='method'><a href="Lore.Statistics.html#.normalizeNoOutliers">normalizeNoOutliers</a></li><li data-type='method'><a href="Lore.Statistics.html#.randomNormal">randomNormal</a></li><li data-type='method'><a href="Lore.Statistics.html#.randomNormalInRange">randomNormalInRange</a></li><li data-type='method'><a href="Lore.Statistics.html#.randomNormalScaled">randomNormalScaled</a></li><li data-type='method'><a href="Lore.Statistics.html#.scale">scale</a></li><li data-type='method'><a href="Lore.Statistics.html#.transpose2dArray">transpose2dArray</a></li></ul></li><li><a href="Lore.Tree.html">Tree</a><ul class='methods'><li data-type='method'><a href="Lore.Tree.html#.fromEdgeList">fromEdgeList</a></li><li data-type='method'><a href="Lore.Tree.html#layout">layout</a></li></ul></li><li><a href="Lore.Uniform.html">Uniform</a><ul class='methods'><li data-type='method'><a href="Lore.Uniform.html#.Set">Set</a></li><li data-type='method'><a href="Lore.Uniform.html#setValue">setValue</a></li></ul></li><li><a href="Lore.Utils.html">Utils</a><ul class='methods'><li data-type='method'><a href="Lore.Utils.html#.arrayContains">arrayContains</a></li><li data-type='method'><a href="Lore.Utils.html#.concatTypedArrays">concatTypedArrays</a></li><li data-type='method'><a href="Lore.Utils.html#.extend">extend</a></li><li data-type='method'><a href="Lore.Utils.html#.isFloat">isFloat</a></li><li data-type='method'><a href="Lore.Utils.html#.isInt">isInt</a></li><li data-type='method'><a href="Lore.Utils.html#.jsonp">jsonp</a></li><li data-type='method'><a href="Lore.Utils.html#.mergePointDistances">mergePointDistances</a></li><li data-type='method'><a href="Lore.Utils.html#.msb">msb</a></li></ul></li><li><a href="Lore.Vector3f.html">Vector3f</a><ul class='methods'><li data-type='method'><a href="Lore.Vector3f.html#.add">add</a></li><li data-type='method'><a href="Lore.Vector3f.html#.cross">cross</a></li><li data-type='method'><a href="Lore.Vector3f.html#.divide">divide</a></li><li data-type='method'><a href="Lore.Vector3f.html#.divideScalar">divideScalar</a></li><li data-type='method'><a href="Lore.Vector3f.html#.dot">dot</a></li><li data-type='method'><a href="Lore.Vector3f.html#.forward">forward</a></li><li data-type='method'><a href="Lore.Vector3f.html#.multiply">multiply</a></li><li data-type='method'><a href="Lore.Vector3f.html#.multiplyScalar">multiplyScalar</a></li><li data-type='method'><a href="Lore.Vector3f.html#.normalize">normalize</a></li><li data-type='method'><a href="Lore.Vector3f.html#.right">right</a></li><li data-type='method'><a href="Lore.Vector3f.html#.subtract">subtract</a></li><li data-type='method'><a href="Lore.Vector3f.html#.up">up</a></li><li data-type='method'><a href="Lore.Vector3f.html#add">add</a></li><li data-type='method'><a href="Lore.Vector3f.html#applyProjection">applyProjection</a></li><li data-type='method'><a href="Lore.Vector3f.html#applyQuaternion">applyQuaternion</a></li><li data-type='method'><a href="Lore.Vector3f.html#clone">clone</a></li><li data-type='method'><a href="Lore.Vector3f.html#copyFrom">copyFrom</a></li><li data-type='method'><a href="Lore.Vector3f.html#cross">cross</a></li><li data-type='method'><a href="Lore.Vector3f.html#distanceTo">distanceTo</a></li><li data-type='method'><a href="Lore.Vector3f.html#distanceToSq">distanceToSq</a></li><li data-type='method'><a href="Lore.Vector3f.html#divide">divide</a></li><li data-type='method'><a href="Lore.Vector3f.html#divideScalar">divideScalar</a></li><li data-type='method'><a href="Lore.Vector3f.html#dot">dot</a></li><li data-type='method'><a href="Lore.Vector3f.html#equals">equals</a></li><li data-type='method'><a href="Lore.Vector3f.html#getX">getX</a></li><li data-type='method'><a href="Lore.Vector3f.html#getY">getY</a></li><li data-type='method'><a href="Lore.Vector3f.html#getZ">getZ</a></li><li data-type='method'><a href="Lore.Vector3f.html#length">length</a></li><li data-type='method'><a href="Lore.Vector3f.html#lengthSq">lengthSq</a></li><li data-type='method'><a href="Lore.Vector3f.html#multiply">multiply</a></li><li data-type='method'><a href="Lore.Vector3f.html#multiplyScalar">multiplyScalar</a></li><li data-type='method'><a href="Lore.Vector3f.html#normalize">normalize</a></li><li data-type='method'><a href="Lore.Vector3f.html#project">project</a></li><li data-type='method'><a href="Lore.Vector3f.html#set">set</a></li><li data-type='method'><a href="Lore.Vector3f.html#setFromSphericalCoords">setFromSphericalCoords</a></li><li data-type='method'><a href="Lore.Vector3f.html#setLength">setLength</a></li><li data-type='method'><a href="Lore.Vector3f.html#setX">setX</a></li><li data-type='method'><a href="Lore.Vector3f.html#setY">setY</a></li><li data-type='method'><a href="Lore.Vector3f.html#setZ">setZ</a></li><li data-type='method'><a href="Lore.Vector3f.html#subtract">subtract</a></li><li data-type='method'><a href="Lore.Vector3f.html#toDirection">toDirection</a></li><li data-type='method'><a href="Lore.Vector3f.html#toString">toString</a></li><li data-type='method'><a href="Lore.Vector3f.html#unproject">unproject</a></li></ul></li></ul><h3>Global</h3><ul><li><a href="global.html#Lore">Lore</a></li></ul>
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<h1 class="page-title">Math/Ray.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/** A class representing a ray */
Lore.Ray = class Ray {
/**
* Creates an instance of Ray.
* @param {Vector3f} source The source of the ray.
* @param {Vector3f} direction The direction of the ray.
*/
constructor(source, direction) {
this.source = source || new Lore.Vector3f();
this.direction = direction || new Lore.Vector3f();
}
/**
* Copy the values from another ray.
*
* @param {Ray} r A ray.
* @returns {Ray} Returns itself.
*/
copyFrom(r) {
this.source.copyFrom(r.source);
this.direction.copyFrom(r.direction);
return this;
}
/**
* Apply a projection matrix to this ray.
*
* @param {Matrix4f|ProjectionMatrix} m A matrix / projection matrix.
* @returns {Ray} Returns itself.
*/
applyProjection(m) {
this.direction.add(this.source).applyProjection(m);
this.source.applyProjection(m);
this.direction.subtract(this.source);
this.direction.normalize();
return this;
}
// See if the two following functions can be optimized
/**
* The square of the distance of a vector to this ray.
*
* @param {Vector3f} v A vector.
* @returns {Number} The square pf the distance between the point and this ray.
*/
distanceSqToPoint(v) {
let tmp = Lore.Vector3f.subtract(v, this.source);
let directionDistance = tmp.dot(this.direction);
if (directionDistance < 0) {
return this.source.distanceToSq(v);
}
tmp.copyFrom(this.direction).multiplyScalar(directionDistance).add(this.source);
return tmp.distanceToSq(v);
}
/**
* Find a point on the ray that is closest to a supplied vector.
*
* @param {Vector3f} v A vector.
* @returns {Vector3f} The cloest point on the ray to the supplied point.
*/
closestPointToPoint(v) {
let result = Lore.Vector3f.subtract(v, this.source);
let directionDistance = result.dot(this.direction);
if (directionDistance < 0) {
return result.copyFrom(this.source);
}
return result.copyFrom(this.direction).multiplyScalar(directionDistance).add(this.source);
}
}
</code></pre>
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