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  1. <!DOCTYPE html>
    2. 

  2. <html lang="en">
    3. 

  3. <head>
    4. 

  4. 	<meta charset="utf-8">
    5. 

  5. 	<title>Ray - Three.js Docs</title>
    6. 

  6. 	<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
    7. 

  7. 	<script src="../scripts/highlight.min.js"></script>
    8. 

  8. 	<link type="text/css" rel="stylesheet" href="../styles/highlight-three.css">
    9. 

  9. 	<link type="text/css" rel="stylesheet" href="../styles/page.css">
    10. 

  10. </head>
    11. 

  11. <body>
    12. 

  12. 	<h1 translate="no">Ray</h1>
    13. 

  13. 		<section>
    14. 

  14. 			<header>
    15. 

  15. 				<div class="class-description"><p>A ray that emits from an origin in a certain direction. The class is used by
    16. 

  16. <a href="Raycaster.html">Raycaster</a> to assist with raycasting. Raycasting is used for
    17. 

  17. mouse picking (working out what objects in the 3D space the mouse is over)
    18. 

  18. amongst other things.</p></div>
    19. 

  19. 			</header>
    20. 

  20. 			<article>
    21. 

  21. 				<div class="container-overview">
    22. 

  22. 					<h2>Constructor</h2>
    23. 

  23. 					<h3 class="name name-method" id="Ray" translate="no">new <a href="#Ray">Ray</a><span class="signature">( origin : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, direction : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span> </h3>
    24. 

  24. 					<div class="method">
    25. 

  25. 						<div class="description">
    26. 

  26. 							<p>Constructs a new ray.</p>
    27. 

  27. 						</div>
    28. 

  28. 						<table class="params">
    29. 

  29. 							<tbody>
    30. 

  30. 								<tr>
    31. 

  31. 									<td class="name">
    32. 

  32. 										<strong>origin</strong>
    33. 

  33. 									</td>
    34. 

  34. 									<td class="description last">
    35. 

  35. 										<p>The origin of the ray.</p>
    36. 

  36. 										<p>Default is <code>(0,0,0)</code>.</p>
    37. 

  37. 									</td>
    38. 

  38. 								</tr>
    39. 

  39. 								<tr>
    40. 

  40. 									<td class="name">
    41. 

  41. 										<strong>direction</strong>
    42. 

  42. 									</td>
    43. 

  43. 									<td class="description last">
    44. 

  44. 										<p>The (normalized) direction of the ray.</p>
    45. 

  45. 										<p>Default is <code>(0,0,-1)</code>.</p>
    46. 

  46. 									</td>
    47. 

  47. 								</tr>
    48. 

  48. 							</tbody>
    49. 

  49. 						</table>
    50. 

  50. 					</div>
    51. 

  51. 				</div>
    52. 

  52. 				<h2 class="subsection-title">Properties</h2>
    53. 

  53. 				<div class="member">
    54. 

  54. 					<h3 class="name" id="direction" translate="no">.<a href="#direction">direction</a><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    55. 

  55. 					<div class="description">
    56. 

  56. 						<p>The (normalized) direction of the ray.</p>
    57. 

  57. 					</div>
    58. 

  58. 				</div>
    59. 

  59. 				<div class="member">
    60. 

  60. 					<h3 class="name" id="origin" translate="no">.<a href="#origin">origin</a><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    61. 

  61. 					<div class="description">
    62. 

  62. 						<p>The origin of the ray.</p>
    63. 

  63. 					</div>
    64. 

  64. 				</div>
    65. 

  65. 				<h2 class="subsection-title">Methods</h2>
    66. 

  66. 					<h3 class="name name-method" id="applyMatrix4" translate="no">.<a href="#applyMatrix4">applyMatrix4</a><span class="signature">( matrix4 : <span class="param-type"><a href="Matrix4.html">Matrix4</a></span> )</span><span class="type-signature"> : <a href="Ray.html">Ray</a></span> </h3>
    67. 

  67. 					<div class="method">
    68. 

  68. 						<div class="description">
    69. 

  69. 							<p>Transforms this ray with the given 4x4 transformation matrix.</p>
    70. 

  70. 						</div>
    71. 

  71. 						<table class="params">
    72. 

  72. 							<tbody>
    73. 

  73. 								<tr>
    74. 

  74. 									<td class="name">
    75. 

  75. 										<strong>matrix4</strong>
    76. 

  76. 									</td>
    77. 

  77. 									<td class="description last">
    78. 

  78. 										<p>The transformation matrix.</p>
    79. 

  79. 									</td>
    80. 

  80. 								</tr>
    81. 

  81. 							</tbody>
    82. 

  82. 						</table>
    83. 

  83. 						<dl class="details">
    84. 

  84. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this ray.</dt>
    85. 

  85. 						</dl>
    86. 

  86. 					</div>
    87. 

  87. 					<h3 class="name name-method" id="at" translate="no">.<a href="#at">at</a><span class="signature">( t : <span class="param-type">number</span>, target : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    88. 

  88. 					<div class="method">
    89. 

  89. 						<div class="description">
    90. 

  90. 							<p>Returns a vector that is located at a given distance along this ray.</p>
    91. 

  91. 						</div>
    92. 

  92. 						<table class="params">
    93. 

  93. 							<tbody>
    94. 

  94. 								<tr>
    95. 

  95. 									<td class="name">
    96. 

  96. 										<strong>t</strong>
    97. 

  97. 									</td>
    98. 

  98. 									<td class="description last">
    99. 

  99. 										<p>The distance along the ray to retrieve a position for.</p>
    100. 

  100. 									</td>
    101. 

  101. 								</tr>
    102. 

  102. 								<tr>
    103. 

  103. 									<td class="name">
    104. 

  104. 										<strong>target</strong>
    105. 

  105. 									</td>
    106. 

  106. 									<td class="description last">
    107. 

  107. 										<p>The target vector that is used to store the method's result.</p>
    108. 

  108. 									</td>
    109. 

  109. 								</tr>
    110. 

  110. 							</tbody>
    111. 

  111. 						</table>
    112. 

  112. 						<dl class="details">
    113. 

  113. 							<dt class="tag-returns"><strong>Returns:</strong> A position on the ray.</dt>
    114. 

  114. 						</dl>
    115. 

  115. 					</div>
    116. 

  116. 					<h3 class="name name-method" id="clone" translate="no">.<a href="#clone">clone</a><span class="signature">()</span><span class="type-signature"> : <a href="Ray.html">Ray</a></span> </h3>
    117. 

  117. 					<div class="method">
    118. 

  118. 						<div class="description">
    119. 

  119. 							<p>Returns a new ray with copied values from this instance.</p>
    120. 

  120. 						</div>
    121. 

  121. 						<dl class="details">
    122. 

  122. 							<dt class="tag-returns"><strong>Returns:</strong> A clone of this instance.</dt>
    123. 

  123. 						</dl>
    124. 

  124. 					</div>
    125. 

  125. 					<h3 class="name name-method" id="closestPointToPoint" translate="no">.<a href="#closestPointToPoint">closestPointToPoint</a><span class="signature">( point : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, target : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    126. 

  126. 					<div class="method">
    127. 

  127. 						<div class="description">
    128. 

  128. 							<p>Returns the point along this ray that is closest to the given point.</p>
    129. 

  129. 						</div>
    130. 

  130. 						<table class="params">
    131. 

  131. 							<tbody>
    132. 

  132. 								<tr>
    133. 

  133. 									<td class="name">
    134. 

  134. 										<strong>point</strong>
    135. 

  135. 									</td>
    136. 

  136. 									<td class="description last">
    137. 

  137. 										<p>A point in 3D space to get the closet location on the ray for.</p>
    138. 

  138. 									</td>
    139. 

  139. 								</tr>
    140. 

  140. 								<tr>
    141. 

  141. 									<td class="name">
    142. 

  142. 										<strong>target</strong>
    143. 

  143. 									</td>
    144. 

  144. 									<td class="description last">
    145. 

  145. 										<p>The target vector that is used to store the method's result.</p>
    146. 

  146. 									</td>
    147. 

  147. 								</tr>
    148. 

  148. 							</tbody>
    149. 

  149. 						</table>
    150. 

  150. 						<dl class="details">
    151. 

  151. 							<dt class="tag-returns"><strong>Returns:</strong> The closest point on this ray.</dt>
    152. 

  152. 						</dl>
    153. 

  153. 					</div>
    154. 

  154. 					<h3 class="name name-method" id="copy" translate="no">.<a href="#copy">copy</a><span class="signature">( ray : <span class="param-type"><a href="Ray.html">Ray</a></span> )</span><span class="type-signature"> : <a href="Ray.html">Ray</a></span> </h3>
    155. 

  155. 					<div class="method">
    156. 

  156. 						<div class="description">
    157. 

  157. 							<p>Copies the values of the given ray to this instance.</p>
    158. 

  158. 						</div>
    159. 

  159. 						<table class="params">
    160. 

  160. 							<tbody>
    161. 

  161. 								<tr>
    162. 

  162. 									<td class="name">
    163. 

  163. 										<strong>ray</strong>
    164. 

  164. 									</td>
    165. 

  165. 									<td class="description last">
    166. 

  166. 										<p>The ray to copy.</p>
    167. 

  167. 									</td>
    168. 

  168. 								</tr>
    169. 

  169. 							</tbody>
    170. 

  170. 						</table>
    171. 

  171. 						<dl class="details">
    172. 

  172. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this ray.</dt>
    173. 

  173. 						</dl>
    174. 

  174. 					</div>
    175. 

  175. 					<h3 class="name name-method" id="distanceSqToPoint" translate="no">.<a href="#distanceSqToPoint">distanceSqToPoint</a><span class="signature">( point : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : number</span> </h3>
    176. 

  176. 					<div class="method">
    177. 

  177. 						<div class="description">
    178. 

  178. 							<p>Returns the squared distance of the closest approach between this ray and the given point.</p>
    179. 

  179. 						</div>
    180. 

  180. 						<table class="params">
    181. 

  181. 							<tbody>
    182. 

  182. 								<tr>
    183. 

  183. 									<td class="name">
    184. 

  184. 										<strong>point</strong>
    185. 

  185. 									</td>
    186. 

  186. 									<td class="description last">
    187. 

  187. 										<p>A point in 3D space to compute the distance to.</p>
    188. 

  188. 									</td>
    189. 

  189. 								</tr>
    190. 

  190. 							</tbody>
    191. 

  191. 						</table>
    192. 

  192. 						<dl class="details">
    193. 

  193. 							<dt class="tag-returns"><strong>Returns:</strong> The squared distance.</dt>
    194. 

  194. 						</dl>
    195. 

  195. 					</div>
    196. 

  196. 					<h3 class="name name-method" id="distanceSqToSegment" translate="no">.<a href="#distanceSqToSegment">distanceSqToSegment</a><span class="signature">( v0 : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, v1 : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, optionalPointOnRay : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, optionalPointOnSegment : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : number</span> </h3>
    197. 

  197. 					<div class="method">
    198. 

  198. 						<div class="description">
    199. 

  199. 							<p>Returns the squared distance between this ray and the given line segment.</p>
    200. 

  200. 						</div>
    201. 

  201. 						<table class="params">
    202. 

  202. 							<tbody>
    203. 

  203. 								<tr>
    204. 

  204. 									<td class="name">
    205. 

  205. 										<strong>v0</strong>
    206. 

  206. 									</td>
    207. 

  207. 									<td class="description last">
    208. 

  208. 										<p>The start point of the line segment.</p>
    209. 

  209. 									</td>
    210. 

  210. 								</tr>
    211. 

  211. 								<tr>
    212. 

  212. 									<td class="name">
    213. 

  213. 										<strong>v1</strong>
    214. 

  214. 									</td>
    215. 

  215. 									<td class="description last">
    216. 

  216. 										<p>The end point of the line segment.</p>
    217. 

  217. 									</td>
    218. 

  218. 								</tr>
    219. 

  219. 								<tr>
    220. 

  220. 									<td class="name">
    221. 

  221. 										<strong>optionalPointOnRay</strong>
    222. 

  222. 									</td>
    223. 

  223. 									<td class="description last">
    224. 

  224. 										<p>When provided, it receives the point on this ray that is closest to the segment.</p>
    225. 

  225. 									</td>
    226. 

  226. 								</tr>
    227. 

  227. 								<tr>
    228. 

  228. 									<td class="name">
    229. 

  229. 										<strong>optionalPointOnSegment</strong>
    230. 

  230. 									</td>
    231. 

  231. 									<td class="description last">
    232. 

  232. 										<p>When provided, it receives the point on the line segment that is closest to this ray.</p>
    233. 

  233. 									</td>
    234. 

  234. 								</tr>
    235. 

  235. 							</tbody>
    236. 

  236. 						</table>
    237. 

  237. 						<dl class="details">
    238. 

  238. 							<dt class="tag-returns"><strong>Returns:</strong> The squared distance.</dt>
    239. 

  239. 						</dl>
    240. 

  240. 					</div>
    241. 

  241. 					<h3 class="name name-method" id="distanceToPlane" translate="no">.<a href="#distanceToPlane">distanceToPlane</a><span class="signature">( plane : <span class="param-type"><a href="Plane.html">Plane</a></span> )</span><span class="type-signature"> : number</span> </h3>
    242. 

  242. 					<div class="method">
    243. 

  243. 						<div class="description">
    244. 

  244. 							<p>Computes the distance from the ray's origin to the given plane. Returns <code>null</code> if the ray
    245. 

  245. does not intersect with the plane.</p>
    246. 

  246. 						</div>
    247. 

  247. 						<table class="params">
    248. 

  248. 							<tbody>
    249. 

  249. 								<tr>
    250. 

  250. 									<td class="name">
    251. 

  251. 										<strong>plane</strong>
    252. 

  252. 									</td>
    253. 

  253. 									<td class="description last">
    254. 

  254. 										<p>The plane to compute the distance to.</p>
    255. 

  255. 									</td>
    256. 

  256. 								</tr>
    257. 

  257. 							</tbody>
    258. 

  258. 						</table>
    259. 

  259. 						<dl class="details">
    260. 

  260. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this ray intersects with the given sphere or not.</dt>
    261. 

  261. 						</dl>
    262. 

  262. 					</div>
    263. 

  263. 					<h3 class="name name-method" id="distanceToPoint" translate="no">.<a href="#distanceToPoint">distanceToPoint</a><span class="signature">( point : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : number</span> </h3>
    264. 

  264. 					<div class="method">
    265. 

  265. 						<div class="description">
    266. 

  266. 							<p>Returns the distance of the closest approach between this ray and the given point.</p>
    267. 

  267. 						</div>
    268. 

  268. 						<table class="params">
    269. 

  269. 							<tbody>
    270. 

  270. 								<tr>
    271. 

  271. 									<td class="name">
    272. 

  272. 										<strong>point</strong>
    273. 

  273. 									</td>
    274. 

  274. 									<td class="description last">
    275. 

  275. 										<p>A point in 3D space to compute the distance to.</p>
    276. 

  276. 									</td>
    277. 

  277. 								</tr>
    278. 

  278. 							</tbody>
    279. 

  279. 						</table>
    280. 

  280. 						<dl class="details">
    281. 

  281. 							<dt class="tag-returns"><strong>Returns:</strong> The distance.</dt>
    282. 

  282. 						</dl>
    283. 

  283. 					</div>
    284. 

  284. 					<h3 class="name name-method" id="equals" translate="no">.<a href="#equals">equals</a><span class="signature">( ray : <span class="param-type"><a href="Ray.html">Ray</a></span> )</span><span class="type-signature"> : boolean</span> </h3>
    285. 

  285. 					<div class="method">
    286. 

  286. 						<div class="description">
    287. 

  287. 							<p>Returns <code>true</code> if this ray is equal with the given one.</p>
    288. 

  288. 						</div>
    289. 

  289. 						<table class="params">
    290. 

  290. 							<tbody>
    291. 

  291. 								<tr>
    292. 

  292. 									<td class="name">
    293. 

  293. 										<strong>ray</strong>
    294. 

  294. 									</td>
    295. 

  295. 									<td class="description last">
    296. 

  296. 										<p>The ray to test for equality.</p>
    297. 

  297. 									</td>
    298. 

  298. 								</tr>
    299. 

  299. 							</tbody>
    300. 

  300. 						</table>
    301. 

  301. 						<dl class="details">
    302. 

  302. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this ray is equal with the given one.</dt>
    303. 

  303. 						</dl>
    304. 

  304. 					</div>
    305. 

  305. 					<h3 class="name name-method" id="intersectBox" translate="no">.<a href="#intersectBox">intersectBox</a><span class="signature">( box : <span class="param-type"><a href="Box3.html">Box3</a></span>, target : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    306. 

  306. 					<div class="method">
    307. 

  307. 						<div class="description">
    308. 

  308. 							<p>Intersects this ray with the given bounding box, returning the intersection
    309. 

  309. point or <code>null</code> if there is no intersection.</p>
    310. 

  310. 						</div>
    311. 

  311. 						<table class="params">
    312. 

  312. 							<tbody>
    313. 

  313. 								<tr>
    314. 

  314. 									<td class="name">
    315. 

  315. 										<strong>box</strong>
    316. 

  316. 									</td>
    317. 

  317. 									<td class="description last">
    318. 

  318. 										<p>The box to intersect.</p>
    319. 

  319. 									</td>
    320. 

  320. 								</tr>
    321. 

  321. 								<tr>
    322. 

  322. 									<td class="name">
    323. 

  323. 										<strong>target</strong>
    324. 

  324. 									</td>
    325. 

  325. 									<td class="description last">
    326. 

  326. 										<p>The target vector that is used to store the method's result.</p>
    327. 

  327. 									</td>
    328. 

  328. 								</tr>
    329. 

  329. 							</tbody>
    330. 

  330. 						</table>
    331. 

  331. 						<dl class="details">
    332. 

  332. 							<dt class="tag-returns"><strong>Returns:</strong> The intersection point.</dt>
    333. 

  333. 						</dl>
    334. 

  334. 					</div>
    335. 

  335. 					<h3 class="name name-method" id="intersectPlane" translate="no">.<a href="#intersectPlane">intersectPlane</a><span class="signature">( plane : <span class="param-type"><a href="Plane.html">Plane</a></span>, target : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    336. 

  336. 					<div class="method">
    337. 

  337. 						<div class="description">
    338. 

  338. 							<p>Intersects this ray with the given plane, returning the intersection
    339. 

  339. point or <code>null</code> if there is no intersection.</p>
    340. 

  340. 						</div>
    341. 

  341. 						<table class="params">
    342. 

  342. 							<tbody>
    343. 

  343. 								<tr>
    344. 

  344. 									<td class="name">
    345. 

  345. 										<strong>plane</strong>
    346. 

  346. 									</td>
    347. 

  347. 									<td class="description last">
    348. 

  348. 										<p>The plane to intersect.</p>
    349. 

  349. 									</td>
    350. 

  350. 								</tr>
    351. 

  351. 								<tr>
    352. 

  352. 									<td class="name">
    353. 

  353. 										<strong>target</strong>
    354. 

  354. 									</td>
    355. 

  355. 									<td class="description last">
    356. 

  356. 										<p>The target vector that is used to store the method's result.</p>
    357. 

  357. 									</td>
    358. 

  358. 								</tr>
    359. 

  359. 							</tbody>
    360. 

  360. 						</table>
    361. 

  361. 						<dl class="details">
    362. 

  362. 							<dt class="tag-returns"><strong>Returns:</strong> The intersection point.</dt>
    363. 

  363. 						</dl>
    364. 

  364. 					</div>
    365. 

  365. 					<h3 class="name name-method" id="intersectSphere" translate="no">.<a href="#intersectSphere">intersectSphere</a><span class="signature">( sphere : <span class="param-type"><a href="Sphere.html">Sphere</a></span>, target : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    366. 

  366. 					<div class="method">
    367. 

  367. 						<div class="description">
    368. 

  368. 							<p>Intersects this ray with the given sphere, returning the intersection
    369. 

  369. point or <code>null</code> if there is no intersection.</p>
    370. 

  370. 						</div>
    371. 

  371. 						<table class="params">
    372. 

  372. 							<tbody>
    373. 

  373. 								<tr>
    374. 

  374. 									<td class="name">
    375. 

  375. 										<strong>sphere</strong>
    376. 

  376. 									</td>
    377. 

  377. 									<td class="description last">
    378. 

  378. 										<p>The sphere to intersect.</p>
    379. 

  379. 									</td>
    380. 

  380. 								</tr>
    381. 

  381. 								<tr>
    382. 

  382. 									<td class="name">
    383. 

  383. 										<strong>target</strong>
    384. 

  384. 									</td>
    385. 

  385. 									<td class="description last">
    386. 

  386. 										<p>The target vector that is used to store the method's result.</p>
    387. 

  387. 									</td>
    388. 

  388. 								</tr>
    389. 

  389. 							</tbody>
    390. 

  390. 						</table>
    391. 

  391. 						<dl class="details">
    392. 

  392. 							<dt class="tag-returns"><strong>Returns:</strong> The intersection point.</dt>
    393. 

  393. 						</dl>
    394. 

  394. 					</div>
    395. 

  395. 					<h3 class="name name-method" id="intersectTriangle" translate="no">.<a href="#intersectTriangle">intersectTriangle</a><span class="signature">( a : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, b : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, c : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, backfaceCulling : <span class="param-type">boolean</span>, target : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    396. 

  396. 					<div class="method">
    397. 

  397. 						<div class="description">
    398. 

  398. 							<p>Intersects this ray with the given triangle, returning the intersection
    399. 

  399. point or <code>null</code> if there is no intersection.</p>
    400. 

  400. 						</div>
    401. 

  401. 						<table class="params">
    402. 

  402. 							<tbody>
    403. 

  403. 								<tr>
    404. 

  404. 									<td class="name">
    405. 

  405. 										<strong>a</strong>
    406. 

  406. 									</td>
    407. 

  407. 									<td class="description last">
    408. 

  408. 										<p>The first vertex of the triangle.</p>
    409. 

  409. 									</td>
    410. 

  410. 								</tr>
    411. 

  411. 								<tr>
    412. 

  412. 									<td class="name">
    413. 

  413. 										<strong>b</strong>
    414. 

  414. 									</td>
    415. 

  415. 									<td class="description last">
    416. 

  416. 										<p>The second vertex of the triangle.</p>
    417. 

  417. 									</td>
    418. 

  418. 								</tr>
    419. 

  419. 								<tr>
    420. 

  420. 									<td class="name">
    421. 

  421. 										<strong>c</strong>
    422. 

  422. 									</td>
    423. 

  423. 									<td class="description last">
    424. 

  424. 										<p>The third vertex of the triangle.</p>
    425. 

  425. 									</td>
    426. 

  426. 								</tr>
    427. 

  427. 								<tr>
    428. 

  428. 									<td class="name">
    429. 

  429. 										<strong>backfaceCulling</strong>
    430. 

  430. 									</td>
    431. 

  431. 									<td class="description last">
    432. 

  432. 										<p>Whether to use backface culling or not.</p>
    433. 

  433. 									</td>
    434. 

  434. 								</tr>
    435. 

  435. 								<tr>
    436. 

  436. 									<td class="name">
    437. 

  437. 										<strong>target</strong>
    438. 

  438. 									</td>
    439. 

  439. 									<td class="description last">
    440. 

  440. 										<p>The target vector that is used to store the method's result.</p>
    441. 

  441. 									</td>
    442. 

  442. 								</tr>
    443. 

  443. 							</tbody>
    444. 

  444. 						</table>
    445. 

  445. 						<dl class="details">
    446. 

  446. 							<dt class="tag-returns"><strong>Returns:</strong> The intersection point.</dt>
    447. 

  447. 						</dl>
    448. 

  448. 					</div>
    449. 

  449. 					<h3 class="name name-method" id="intersectsBox" translate="no">.<a href="#intersectsBox">intersectsBox</a><span class="signature">( box : <span class="param-type"><a href="Box3.html">Box3</a></span> )</span><span class="type-signature"> : boolean</span> </h3>
    450. 

  450. 					<div class="method">
    451. 

  451. 						<div class="description">
    452. 

  452. 							<p>Returns <code>true</code> if this ray intersects with the given box.</p>
    453. 

  453. 						</div>
    454. 

  454. 						<table class="params">
    455. 

  455. 							<tbody>
    456. 

  456. 								<tr>
    457. 

  457. 									<td class="name">
    458. 

  458. 										<strong>box</strong>
    459. 

  459. 									</td>
    460. 

  460. 									<td class="description last">
    461. 

  461. 										<p>The box to intersect.</p>
    462. 

  462. 									</td>
    463. 

  463. 								</tr>
    464. 

  464. 							</tbody>
    465. 

  465. 						</table>
    466. 

  466. 						<dl class="details">
    467. 

  467. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this ray intersects with the given box or not.</dt>
    468. 

  468. 						</dl>
    469. 

  469. 					</div>
    470. 

  470. 					<h3 class="name name-method" id="intersectsPlane" translate="no">.<a href="#intersectsPlane">intersectsPlane</a><span class="signature">( plane : <span class="param-type"><a href="Plane.html">Plane</a></span> )</span><span class="type-signature"> : boolean</span> </h3>
    471. 

  471. 					<div class="method">
    472. 

  472. 						<div class="description">
    473. 

  473. 							<p>Returns <code>true</code> if this ray intersects with the given plane.</p>
    474. 

  474. 						</div>
    475. 

  475. 						<table class="params">
    476. 

  476. 							<tbody>
    477. 

  477. 								<tr>
    478. 

  478. 									<td class="name">
    479. 

  479. 										<strong>plane</strong>
    480. 

  480. 									</td>
    481. 

  481. 									<td class="description last">
    482. 

  482. 										<p>The plane to intersect.</p>
    483. 

  483. 									</td>
    484. 

  484. 								</tr>
    485. 

  485. 							</tbody>
    486. 

  486. 						</table>
    487. 

  487. 						<dl class="details">
    488. 

  488. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this ray intersects with the given plane or not.</dt>
    489. 

  489. 						</dl>
    490. 

  490. 					</div>
    491. 

  491. 					<h3 class="name name-method" id="intersectsSphere" translate="no">.<a href="#intersectsSphere">intersectsSphere</a><span class="signature">( sphere : <span class="param-type"><a href="Sphere.html">Sphere</a></span> )</span><span class="type-signature"> : boolean</span> </h3>
    492. 

  492. 					<div class="method">
    493. 

  493. 						<div class="description">
    494. 

  494. 							<p>Returns <code>true</code> if this ray intersects with the given sphere.</p>
    495. 

  495. 						</div>
    496. 

  496. 						<table class="params">
    497. 

  497. 							<tbody>
    498. 

  498. 								<tr>
    499. 

  499. 									<td class="name">
    500. 

  500. 										<strong>sphere</strong>
    501. 

  501. 									</td>
    502. 

  502. 									<td class="description last">
    503. 

  503. 										<p>The sphere to intersect.</p>
    504. 

  504. 									</td>
    505. 

  505. 								</tr>
    506. 

  506. 							</tbody>
    507. 

  507. 						</table>
    508. 

  508. 						<dl class="details">
    509. 

  509. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this ray intersects with the given sphere or not.</dt>
    510. 

  510. 						</dl>
    511. 

  511. 					</div>
    512. 

  512. 					<h3 class="name name-method" id="lookAt" translate="no">.<a href="#lookAt">lookAt</a><span class="signature">( v : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Ray.html">Ray</a></span> </h3>
    513. 

  513. 					<div class="method">
    514. 

  514. 						<div class="description">
    515. 

  515. 							<p>Adjusts the direction of the ray to point at the given vector in world space.</p>
    516. 

  516. 						</div>
    517. 

  517. 						<table class="params">
    518. 

  518. 							<tbody>
    519. 

  519. 								<tr>
    520. 

  520. 									<td class="name">
    521. 

  521. 										<strong>v</strong>
    522. 

  522. 									</td>
    523. 

  523. 									<td class="description last">
    524. 

  524. 										<p>The target position.</p>
    525. 

  525. 									</td>
    526. 

  526. 								</tr>
    527. 

  527. 							</tbody>
    528. 

  528. 						</table>
    529. 

  529. 						<dl class="details">
    530. 

  530. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this ray.</dt>
    531. 

  531. 						</dl>
    532. 

  532. 					</div>
    533. 

  533. 					<h3 class="name name-method" id="recast" translate="no">.<a href="#recast">recast</a><span class="signature">( t : <span class="param-type">number</span> )</span><span class="type-signature"> : <a href="Ray.html">Ray</a></span> </h3>
    534. 

  534. 					<div class="method">
    535. 

  535. 						<div class="description">
    536. 

  536. 							<p>Shift the origin of this ray along its direction by the given distance.</p>
    537. 

  537. 						</div>
    538. 

  538. 						<table class="params">
    539. 

  539. 							<tbody>
    540. 

  540. 								<tr>
    541. 

  541. 									<td class="name">
    542. 

  542. 										<strong>t</strong>
    543. 

  543. 									</td>
    544. 

  544. 									<td class="description last">
    545. 

  545. 										<p>The distance along the ray to interpolate.</p>
    546. 

  546. 									</td>
    547. 

  547. 								</tr>
    548. 

  548. 							</tbody>
    549. 

  549. 						</table>
    550. 

  550. 						<dl class="details">
    551. 

  551. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this ray.</dt>
    552. 

  552. 						</dl>
    553. 

  553. 					</div>
    554. 

  554. 					<h3 class="name name-method" id="set" translate="no">.<a href="#set">set</a><span class="signature">( origin : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, direction : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span><span class="type-signature"> : <a href="Ray.html">Ray</a></span> </h3>
    555. 

  555. 					<div class="method">
    556. 

  556. 						<div class="description">
    557. 

  557. 							<p>Sets the ray's components by copying the given values.</p>
    558. 

  558. 						</div>
    559. 

  559. 						<table class="params">
    560. 

  560. 							<tbody>
    561. 

  561. 								<tr>
    562. 

  562. 									<td class="name">
    563. 

  563. 										<strong>origin</strong>
    564. 

  564. 									</td>
    565. 

  565. 									<td class="description last">
    566. 

  566. 										<p>The origin.</p>
    567. 

  567. 									</td>
    568. 

  568. 								</tr>
    569. 

  569. 								<tr>
    570. 

  570. 									<td class="name">
    571. 

  571. 										<strong>direction</strong>
    572. 

  572. 									</td>
    573. 

  573. 									<td class="description last">
    574. 

  574. 										<p>The direction.</p>
    575. 

  575. 									</td>
    576. 

  576. 								</tr>
    577. 

  577. 							</tbody>
    578. 

  578. 						</table>
    579. 

  579. 						<dl class="details">
    580. 

  580. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this ray.</dt>
    581. 

  581. 						</dl>
    582. 

  582. 					</div>
    583. 

  583. 				<h2 class="subsection-title">Source</h2>
    584. 

  584. 				<p>
    585. 

  585. 					<a href="https://github.com/mrdoob/three.js/blob/master/src/math/Ray.js" translate="no" target="_blank" rel="noopener">src/math/Ray.js</a>
    586. 

  586. 				</p>
    587. 

  587. 			</article>
    588. 

  588. 		</section>
    589. 

  589. <script src="../scripts/linenumber.js"></script>
    590. 

  590. <script src="../scripts/page.js"></script>
    591. 

  591. </body>
    592. 

  592. </html>
    593.
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