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  1. <!DOCTYPE html>
    2. 

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

  3. <head>
    4. 

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

  5. 	<title>Triangle - 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">Triangle</h1>
    13. 

  13. 		<section>
    14. 

  14. 			<header>
    15. 

  15. 				<div class="class-description"><p>A geometric triangle as defined by three vectors representing its three corners.</p></div>
    16. 

  16. 			</header>
    17. 

  17. 			<article>
    18. 

  18. 				<div class="container-overview">
    19. 

  19. 					<h2>Constructor</h2>
    20. 

  20. 					<h3 class="name name-method" id="Triangle" translate="no">new <a href="#Triangle">Triangle</a><span class="signature">( a : <span class="param-type">Vector3</span>, b : <span class="param-type">Vector3</span>, c : <span class="param-type">Vector3</span> )</span> </h3>
    21. 

  21. 					<div class="method">
    22. 

  22. 						<div class="description">
    23. 

  23. 							<p>Constructs a new triangle.</p>
    24. 

  24. 						</div>
    25. 

  25. 						<table class="params">
    26. 

  26. 							<tbody>
    27. 

  27. 								<tr>
    28. 

  28. 									<td class="name"><code>a</code></td>
    29. 

  29. 									<td class="description last"><p>The first corner of the triangle.<br/>Default is <code>(0,0,0)</code>.</p></td>
    30. 

  30. 								</tr>
    31. 

  31. 								<tr>
    32. 

  32. 									<td class="name"><code>b</code></td>
    33. 

  33. 									<td class="description last"><p>The second corner of the triangle.<br/>Default is <code>(0,0,0)</code>.</p></td>
    34. 

  34. 								</tr>
    35. 

  35. 								<tr>
    36. 

  36. 									<td class="name"><code>c</code></td>
    37. 

  37. 									<td class="description last"><p>The third corner of the triangle.<br/>Default is <code>(0,0,0)</code>.</p></td>
    38. 

  38. 								</tr>
    39. 

  39. 							</tbody>
    40. 

  40. 						</table>
    41. 

  41. 					</div>
    42. 

  42. 				</div>
    43. 

  43. 				<h2 class="subsection-title">Properties</h2>
    44. 

  44. 				<div class="member">
    45. 

  45. 					<h3 class="name" id="a" translate="no">.<a href="#a">a</a><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    46. 

  46. 					<div class="description">
    47. 

  47. 						<p>The first corner of the triangle.</p>
    48. 

  48. 					</div>
    49. 

  49. 				</div>
    50. 

  50. 				<div class="member">
    51. 

  51. 					<h3 class="name" id="b" translate="no">.<a href="#b">b</a><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    52. 

  52. 					<div class="description">
    53. 

  53. 						<p>The second corner of the triangle.</p>
    54. 

  54. 					</div>
    55. 

  55. 				</div>
    56. 

  56. 				<div class="member">
    57. 

  57. 					<h3 class="name" id="c" translate="no">.<a href="#c">c</a><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    58. 

  58. 					<div class="description">
    59. 

  59. 						<p>The third corner of the triangle.</p>
    60. 

  60. 					</div>
    61. 

  61. 				</div>
    62. 

  62. 				<h2 class="subsection-title">Methods</h2>
    63. 

  63. 					<h3 class="name name-method" id="clone" translate="no">.<a href="#clone">clone</a><span class="signature">()</span><span class="type-signature"> : <a href="Triangle.html">Triangle</a></span> </h3>
    64. 

  64. 					<div class="method">
    65. 

  65. 						<div class="description">
    66. 

  66. 							<p>Returns a new triangle with copied values from this instance.</p>
    67. 

  67. 						</div>
    68. 

  68. 						<dl class="details">
    69. 

  69. 							<dt class="tag-returns"><strong>Returns:</strong> A clone of this instance.</dt>
    70. 

  70. 						</dl>
    71. 

  71. 					</div>
    72. 

  72. 					<h3 class="name name-method" id="closestPointToPoint" translate="no">.<a href="#closestPointToPoint">closestPointToPoint</a><span class="signature">( p : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    73. 

  73. 					<div class="method">
    74. 

  74. 						<div class="description">
    75. 

  75. 							<p>Returns the closest point on the triangle to the given point.</p>
    76. 

  76. 						</div>
    77. 

  77. 						<table class="params">
    78. 

  78. 							<tbody>
    79. 

  79. 								<tr>
    80. 

  80. 									<td class="name"><code>p</code></td>
    81. 

  81. 									<td class="description last"><p>The point to compute the closest point for.</p></td>
    82. 

  82. 								</tr>
    83. 

  83. 								<tr>
    84. 

  84. 									<td class="name"><code>target</code></td>
    85. 

  85. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    86. 

  86. 								</tr>
    87. 

  87. 							</tbody>
    88. 

  88. 						</table>
    89. 

  89. 						<dl class="details">
    90. 

  90. 							<dt class="tag-returns"><strong>Returns:</strong> The closest point on the triangle.</dt>
    91. 

  91. 						</dl>
    92. 

  92. 					</div>
    93. 

  93. 					<h3 class="name name-method" id="containsPoint" translate="no">.<a href="#containsPoint">containsPoint</a><span class="signature">( point : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : boolean</span> </h3>
    94. 

  94. 					<div class="method">
    95. 

  95. 						<div class="description">
    96. 

  96. 							<p>Returns <code>true</code> if the given point, when projected onto the plane of the
    97. 

  97. triangle, lies within the triangle.</p>
    98. 

  98. 						</div>
    99. 

  99. 						<table class="params">
    100. 

  100. 							<tbody>
    101. 

  101. 								<tr>
    102. 

  102. 									<td class="name"><code>point</code></td>
    103. 

  103. 									<td class="description last"><p>The point in 3D space to test.</p></td>
    104. 

  104. 								</tr>
    105. 

  105. 							</tbody>
    106. 

  106. 						</table>
    107. 

  107. 						<dl class="details">
    108. 

  108. 							<dt class="tag-returns"><strong>Returns:</strong> Whether the given point, when projected onto the plane of the
    109. 

  109. triangle, lies within the triangle or not.</dt>
    110. 

  110. 						</dl>
    111. 

  111. 					</div>
    112. 

  112. 					<h3 class="name name-method" id="copy" translate="no">.<a href="#copy">copy</a><span class="signature">( triangle : <span class="param-type">Triangle</span> )</span><span class="type-signature"> : <a href="Triangle.html">Triangle</a></span> </h3>
    113. 

  113. 					<div class="method">
    114. 

  114. 						<div class="description">
    115. 

  115. 							<p>Copies the values of the given triangle to this instance.</p>
    116. 

  116. 						</div>
    117. 

  117. 						<table class="params">
    118. 

  118. 							<tbody>
    119. 

  119. 								<tr>
    120. 

  120. 									<td class="name"><code>triangle</code></td>
    121. 

  121. 									<td class="description last"><p>The triangle to copy.</p></td>
    122. 

  122. 								</tr>
    123. 

  123. 							</tbody>
    124. 

  124. 						</table>
    125. 

  125. 						<dl class="details">
    126. 

  126. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this triangle.</dt>
    127. 

  127. 						</dl>
    128. 

  128. 					</div>
    129. 

  129. 					<h3 class="name name-method" id="equals" translate="no">.<a href="#equals">equals</a><span class="signature">( triangle : <span class="param-type">Triangle</span> )</span><span class="type-signature"> : boolean</span> </h3>
    130. 

  130. 					<div class="method">
    131. 

  131. 						<div class="description">
    132. 

  132. 							<p>Returns <code>true</code> if this triangle is equal with the given one.</p>
    133. 

  133. 						</div>
    134. 

  134. 						<table class="params">
    135. 

  135. 							<tbody>
    136. 

  136. 								<tr>
    137. 

  137. 									<td class="name"><code>triangle</code></td>
    138. 

  138. 									<td class="description last"><p>The triangle to test for equality.</p></td>
    139. 

  139. 								</tr>
    140. 

  140. 							</tbody>
    141. 

  141. 						</table>
    142. 

  142. 						<dl class="details">
    143. 

  143. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this triangle is equal with the given one.</dt>
    144. 

  144. 						</dl>
    145. 

  145. 					</div>
    146. 

  146. 					<h3 class="name name-method" id="getArea" translate="no">.<a href="#getArea">getArea</a><span class="signature">()</span><span class="type-signature"> : number</span> </h3>
    147. 

  147. 					<div class="method">
    148. 

  148. 						<div class="description">
    149. 

  149. 							<p>Computes the area of the triangle.</p>
    150. 

  150. 						</div>
    151. 

  151. 						<dl class="details">
    152. 

  152. 							<dt class="tag-returns"><strong>Returns:</strong> The triangle's area.</dt>
    153. 

  153. 						</dl>
    154. 

  154. 					</div>
    155. 

  155. 					<h3 class="name name-method" id="getBarycoord" translate="no">.<a href="#getBarycoord">getBarycoord</a><span class="signature">( point : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    156. 

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

  157. 						<div class="description">
    158. 

  158. 							<p>Computes a barycentric coordinates from the given vector.
    159. 

  159. Returns <code>null</code> if the triangle is degenerate.</p>
    160. 

  160. 						</div>
    161. 

  161. 						<table class="params">
    162. 

  162. 							<tbody>
    163. 

  163. 								<tr>
    164. 

  164. 									<td class="name"><code>point</code></td>
    165. 

  165. 									<td class="description last"><p>A point in 3D space.</p></td>
    166. 

  166. 								</tr>
    167. 

  167. 								<tr>
    168. 

  168. 									<td class="name"><code>target</code></td>
    169. 

  169. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    170. 

  170. 								</tr>
    171. 

  171. 							</tbody>
    172. 

  172. 						</table>
    173. 

  173. 						<dl class="details">
    174. 

  174. 							<dt class="tag-returns"><strong>Returns:</strong> The barycentric coordinates for the given point</dt>
    175. 

  175. 						</dl>
    176. 

  176. 					</div>
    177. 

  177. 					<h3 class="name name-method" id="getInterpolation" translate="no">.<a href="#getInterpolation">getInterpolation</a><span class="signature">( point : <span class="param-type">Vector3</span>, v1 : <span class="param-type">Vector3</span>, v2 : <span class="param-type">Vector3</span>, v3 : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    178. 

  178. 					<div class="method">
    179. 

  179. 						<div class="description">
    180. 

  180. 							<p>Computes the value barycentrically interpolated for the given point on the
    181. 

  181. triangle. Returns <code>null</code> if the triangle is degenerate.</p>
    182. 

  182. 						</div>
    183. 

  183. 						<table class="params">
    184. 

  184. 							<tbody>
    185. 

  185. 								<tr>
    186. 

  186. 									<td class="name"><code>point</code></td>
    187. 

  187. 									<td class="description last"><p>Position of interpolated point.</p></td>
    188. 

  188. 								</tr>
    189. 

  189. 								<tr>
    190. 

  190. 									<td class="name"><code>v1</code></td>
    191. 

  191. 									<td class="description last"><p>Value to interpolate of first vertex.</p></td>
    192. 

  192. 								</tr>
    193. 

  193. 								<tr>
    194. 

  194. 									<td class="name"><code>v2</code></td>
    195. 

  195. 									<td class="description last"><p>Value to interpolate of second vertex.</p></td>
    196. 

  196. 								</tr>
    197. 

  197. 								<tr>
    198. 

  198. 									<td class="name"><code>v3</code></td>
    199. 

  199. 									<td class="description last"><p>Value to interpolate of third vertex.</p></td>
    200. 

  200. 								</tr>
    201. 

  201. 								<tr>
    202. 

  202. 									<td class="name"><code>target</code></td>
    203. 

  203. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    204. 

  204. 								</tr>
    205. 

  205. 							</tbody>
    206. 

  206. 						</table>
    207. 

  207. 						<dl class="details">
    208. 

  208. 							<dt class="tag-returns"><strong>Returns:</strong> The interpolated value.</dt>
    209. 

  209. 						</dl>
    210. 

  210. 					</div>
    211. 

  211. 					<h3 class="name name-method" id="getMidpoint" translate="no">.<a href="#getMidpoint">getMidpoint</a><span class="signature">( target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    212. 

  212. 					<div class="method">
    213. 

  213. 						<div class="description">
    214. 

  214. 							<p>Computes the midpoint of the triangle.</p>
    215. 

  215. 						</div>
    216. 

  216. 						<table class="params">
    217. 

  217. 							<tbody>
    218. 

  218. 								<tr>
    219. 

  219. 									<td class="name"><code>target</code></td>
    220. 

  220. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    221. 

  221. 								</tr>
    222. 

  222. 							</tbody>
    223. 

  223. 						</table>
    224. 

  224. 						<dl class="details">
    225. 

  225. 							<dt class="tag-returns"><strong>Returns:</strong> The triangle's midpoint.</dt>
    226. 

  226. 						</dl>
    227. 

  227. 					</div>
    228. 

  228. 					<h3 class="name name-method" id="getNormal" translate="no">.<a href="#getNormal">getNormal</a><span class="signature">( target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    229. 

  229. 					<div class="method">
    230. 

  230. 						<div class="description">
    231. 

  231. 							<p>Computes the normal of the triangle.</p>
    232. 

  232. 						</div>
    233. 

  233. 						<table class="params">
    234. 

  234. 							<tbody>
    235. 

  235. 								<tr>
    236. 

  236. 									<td class="name"><code>target</code></td>
    237. 

  237. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    238. 

  238. 								</tr>
    239. 

  239. 							</tbody>
    240. 

  240. 						</table>
    241. 

  241. 						<dl class="details">
    242. 

  242. 							<dt class="tag-returns"><strong>Returns:</strong> The triangle's normal.</dt>
    243. 

  243. 						</dl>
    244. 

  244. 					</div>
    245. 

  245. 					<h3 class="name name-method" id="getPlane" translate="no">.<a href="#getPlane">getPlane</a><span class="signature">( target : <span class="param-type">Plane</span> )</span><span class="type-signature"> : <a href="Plane.html">Plane</a></span> </h3>
    246. 

  246. 					<div class="method">
    247. 

  247. 						<div class="description">
    248. 

  248. 							<p>Computes a plane the triangle lies within.</p>
    249. 

  249. 						</div>
    250. 

  250. 						<table class="params">
    251. 

  251. 							<tbody>
    252. 

  252. 								<tr>
    253. 

  253. 									<td class="name"><code>target</code></td>
    254. 

  254. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    255. 

  255. 								</tr>
    256. 

  256. 							</tbody>
    257. 

  257. 						</table>
    258. 

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

  259. 							<dt class="tag-returns"><strong>Returns:</strong> The plane the triangle lies within.</dt>
    260. 

  260. 						</dl>
    261. 

  261. 					</div>
    262. 

  262. 					<h3 class="name name-method" id="intersectsBox" translate="no">.<a href="#intersectsBox">intersectsBox</a><span class="signature">( box : <span class="param-type">Box3</span> )</span><span class="type-signature"> : boolean</span> </h3>
    263. 

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

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

  265. 							<p>Returns <code>true</code> if this triangle intersects with the given box.</p>
    266. 

  266. 						</div>
    267. 

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

  268. 							<tbody>
    269. 

  269. 								<tr>
    270. 

  270. 									<td class="name"><code>box</code></td>
    271. 

  271. 									<td class="description last"><p>The box to intersect.</p></td>
    272. 

  272. 								</tr>
    273. 

  273. 							</tbody>
    274. 

  274. 						</table>
    275. 

  275. 						<dl class="details">
    276. 

  276. 							<dt class="tag-returns"><strong>Returns:</strong> Whether this triangle intersects with the given box or not.</dt>
    277. 

  277. 						</dl>
    278. 

  278. 					</div>
    279. 

  279. 					<h3 class="name name-method" id="isFrontFacing" translate="no">.<a href="#isFrontFacing">isFrontFacing</a><span class="signature">( direction : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : boolean</span> </h3>
    280. 

  280. 					<div class="method">
    281. 

  281. 						<div class="description">
    282. 

  282. 							<p>Returns <code>true</code> if the triangle is oriented towards the given direction.</p>
    283. 

  283. 						</div>
    284. 

  284. 						<table class="params">
    285. 

  285. 							<tbody>
    286. 

  286. 								<tr>
    287. 

  287. 									<td class="name"><code>direction</code></td>
    288. 

  288. 									<td class="description last"><p>The (normalized) direction vector.</p></td>
    289. 

  289. 								</tr>
    290. 

  290. 							</tbody>
    291. 

  291. 						</table>
    292. 

  292. 						<dl class="details">
    293. 

  293. 							<dt class="tag-returns"><strong>Returns:</strong> Whether the triangle is oriented towards the given direction or not.</dt>
    294. 

  294. 						</dl>
    295. 

  295. 					</div>
    296. 

  296. 					<h3 class="name name-method" id="set" translate="no">.<a href="#set">set</a><span class="signature">( a : <span class="param-type">Vector3</span>, b : <span class="param-type">Vector3</span>, c : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Triangle.html">Triangle</a></span> </h3>
    297. 

  297. 					<div class="method">
    298. 

  298. 						<div class="description">
    299. 

  299. 							<p>Sets the triangle's vertices by copying the given values.</p>
    300. 

  300. 						</div>
    301. 

  301. 						<table class="params">
    302. 

  302. 							<tbody>
    303. 

  303. 								<tr>
    304. 

  304. 									<td class="name"><code>a</code></td>
    305. 

  305. 									<td class="description last"><p>The first corner of the triangle.</p></td>
    306. 

  306. 								</tr>
    307. 

  307. 								<tr>
    308. 

  308. 									<td class="name"><code>b</code></td>
    309. 

  309. 									<td class="description last"><p>The second corner of the triangle.</p></td>
    310. 

  310. 								</tr>
    311. 

  311. 								<tr>
    312. 

  312. 									<td class="name"><code>c</code></td>
    313. 

  313. 									<td class="description last"><p>The third corner of the triangle.</p></td>
    314. 

  314. 								</tr>
    315. 

  315. 							</tbody>
    316. 

  316. 						</table>
    317. 

  317. 						<dl class="details">
    318. 

  318. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this triangle.</dt>
    319. 

  319. 						</dl>
    320. 

  320. 					</div>
    321. 

  321. 					<h3 class="name name-method" id="setFromAttributeAndIndices" translate="no">.<a href="#setFromAttributeAndIndices">setFromAttributeAndIndices</a><span class="signature">( attribute : <span class="param-type">BufferAttribute</span>, i0 : <span class="param-type">number</span>, i1 : <span class="param-type">number</span>, i2 : <span class="param-type">number</span> )</span><span class="type-signature"> : <a href="Triangle.html">Triangle</a></span> </h3>
    322. 

  322. 					<div class="method">
    323. 

  323. 						<div class="description">
    324. 

  324. 							<p>Sets the triangle's vertices by copying the given attribute values.</p>
    325. 

  325. 						</div>
    326. 

  326. 						<table class="params">
    327. 

  327. 							<tbody>
    328. 

  328. 								<tr>
    329. 

  329. 									<td class="name"><code>attribute</code></td>
    330. 

  330. 									<td class="description last"><p>A buffer attribute with 3D points data.</p></td>
    331. 

  331. 								</tr>
    332. 

  332. 								<tr>
    333. 

  333. 									<td class="name"><code>i0</code></td>
    334. 

  334. 									<td class="description last"><p>The attribute index representing the first corner of the triangle.</p></td>
    335. 

  335. 								</tr>
    336. 

  336. 								<tr>
    337. 

  337. 									<td class="name"><code>i1</code></td>
    338. 

  338. 									<td class="description last"><p>The attribute index representing the second corner of the triangle.</p></td>
    339. 

  339. 								</tr>
    340. 

  340. 								<tr>
    341. 

  341. 									<td class="name"><code>i2</code></td>
    342. 

  342. 									<td class="description last"><p>The attribute index representing the third corner of the triangle.</p></td>
    343. 

  343. 								</tr>
    344. 

  344. 							</tbody>
    345. 

  345. 						</table>
    346. 

  346. 						<dl class="details">
    347. 

  347. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this triangle.</dt>
    348. 

  348. 						</dl>
    349. 

  349. 					</div>
    350. 

  350. 					<h3 class="name name-method" id="setFromPointsAndIndices" translate="no">.<a href="#setFromPointsAndIndices">setFromPointsAndIndices</a><span class="signature">( points : <span class="param-type">Array.&lt;Vector3></span>, i0 : <span class="param-type">number</span>, i1 : <span class="param-type">number</span>, i2 : <span class="param-type">number</span> )</span><span class="type-signature"> : <a href="Triangle.html">Triangle</a></span> </h3>
    351. 

  351. 					<div class="method">
    352. 

  352. 						<div class="description">
    353. 

  353. 							<p>Sets the triangle's vertices by copying the given array values.</p>
    354. 

  354. 						</div>
    355. 

  355. 						<table class="params">
    356. 

  356. 							<tbody>
    357. 

  357. 								<tr>
    358. 

  358. 									<td class="name"><code>points</code></td>
    359. 

  359. 									<td class="description last"><p>An array with 3D points.</p></td>
    360. 

  360. 								</tr>
    361. 

  361. 								<tr>
    362. 

  362. 									<td class="name"><code>i0</code></td>
    363. 

  363. 									<td class="description last"><p>The array index representing the first corner of the triangle.</p></td>
    364. 

  364. 								</tr>
    365. 

  365. 								<tr>
    366. 

  366. 									<td class="name"><code>i1</code></td>
    367. 

  367. 									<td class="description last"><p>The array index representing the second corner of the triangle.</p></td>
    368. 

  368. 								</tr>
    369. 

  369. 								<tr>
    370. 

  370. 									<td class="name"><code>i2</code></td>
    371. 

  371. 									<td class="description last"><p>The array index representing the third corner of the triangle.</p></td>
    372. 

  372. 								</tr>
    373. 

  373. 							</tbody>
    374. 

  374. 						</table>
    375. 

  375. 						<dl class="details">
    376. 

  376. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this triangle.</dt>
    377. 

  377. 						</dl>
    378. 

  378. 					</div>
    379. 

  379. 				<h2 class="subsection-title">Static Methods</h2>
    380. 

  380. 					<h3 class="name name-method" id=".containsPoint" translate="no">.<a href="#.containsPoint">containsPoint</a><span class="signature">( point : <span class="param-type">Vector3</span>, a : <span class="param-type">Vector3</span>, b : <span class="param-type">Vector3</span>, c : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : boolean</span> </h3>
    381. 

  381. 					<div class="method">
    382. 

  382. 						<div class="description">
    383. 

  383. 							<p>Returns <code>true</code> if the given point, when projected onto the plane of the
    384. 

  384. triangle, lies within the triangle.</p>
    385. 

  385. 						</div>
    386. 

  386. 						<table class="params">
    387. 

  387. 							<tbody>
    388. 

  388. 								<tr>
    389. 

  389. 									<td class="name"><code>point</code></td>
    390. 

  390. 									<td class="description last"><p>The point in 3D space to test.</p></td>
    391. 

  391. 								</tr>
    392. 

  392. 								<tr>
    393. 

  393. 									<td class="name"><code>a</code></td>
    394. 

  394. 									<td class="description last"><p>The first corner of the triangle.</p></td>
    395. 

  395. 								</tr>
    396. 

  396. 								<tr>
    397. 

  397. 									<td class="name"><code>b</code></td>
    398. 

  398. 									<td class="description last"><p>The second corner of the triangle.</p></td>
    399. 

  399. 								</tr>
    400. 

  400. 								<tr>
    401. 

  401. 									<td class="name"><code>c</code></td>
    402. 

  402. 									<td class="description last"><p>The third corner of the triangle.</p></td>
    403. 

  403. 								</tr>
    404. 

  404. 							</tbody>
    405. 

  405. 						</table>
    406. 

  406. 						<dl class="details">
    407. 

  407. 							<dt class="tag-returns"><strong>Returns:</strong> Whether the given point, when projected onto the plane of the
    408. 

  408. triangle, lies within the triangle or not.</dt>
    409. 

  409. 						</dl>
    410. 

  410. 					</div>
    411. 

  411. 					<h3 class="name name-method" id=".getBarycoord" translate="no">.<a href="#.getBarycoord">getBarycoord</a><span class="signature">( point : <span class="param-type">Vector3</span>, a : <span class="param-type">Vector3</span>, b : <span class="param-type">Vector3</span>, c : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    412. 

  412. 					<div class="method">
    413. 

  413. 						<div class="description">
    414. 

  414. 							<p>Computes a barycentric coordinates from the given vector.
    415. 

  415. Returns <code>null</code> if the triangle is degenerate.</p>
    416. 

  416. 						</div>
    417. 

  417. 						<table class="params">
    418. 

  418. 							<tbody>
    419. 

  419. 								<tr>
    420. 

  420. 									<td class="name"><code>point</code></td>
    421. 

  421. 									<td class="description last"><p>A point in 3D space.</p></td>
    422. 

  422. 								</tr>
    423. 

  423. 								<tr>
    424. 

  424. 									<td class="name"><code>a</code></td>
    425. 

  425. 									<td class="description last"><p>The first corner of the triangle.</p></td>
    426. 

  426. 								</tr>
    427. 

  427. 								<tr>
    428. 

  428. 									<td class="name"><code>b</code></td>
    429. 

  429. 									<td class="description last"><p>The second corner of the triangle.</p></td>
    430. 

  430. 								</tr>
    431. 

  431. 								<tr>
    432. 

  432. 									<td class="name"><code>c</code></td>
    433. 

  433. 									<td class="description last"><p>The third corner of the triangle.</p></td>
    434. 

  434. 								</tr>
    435. 

  435. 								<tr>
    436. 

  436. 									<td class="name"><code>target</code></td>
    437. 

  437. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    438. 

  438. 								</tr>
    439. 

  439. 							</tbody>
    440. 

  440. 						</table>
    441. 

  441. 						<dl class="details">
    442. 

  442. 							<dt class="tag-returns"><strong>Returns:</strong> The barycentric coordinates for the given point</dt>
    443. 

  443. 						</dl>
    444. 

  444. 					</div>
    445. 

  445. 					<h3 class="name name-method" id=".getInterpolatedAttribute" translate="no">.<a href="#.getInterpolatedAttribute">getInterpolatedAttribute</a><span class="signature">( attr : <span class="param-type">BufferAttribute</span>, i1 : <span class="param-type">number</span>, i2 : <span class="param-type">number</span>, i3 : <span class="param-type">number</span>, barycoord : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    446. 

  446. 					<div class="method">
    447. 

  447. 						<div class="description">
    448. 

  448. 							<p>Computes the value barycentrically interpolated for the given attribute and indices.</p>
    449. 

  449. 						</div>
    450. 

  450. 						<table class="params">
    451. 

  451. 							<tbody>
    452. 

  452. 								<tr>
    453. 

  453. 									<td class="name"><code>attr</code></td>
    454. 

  454. 									<td class="description last"><p>The attribute to interpolate.</p></td>
    455. 

  455. 								</tr>
    456. 

  456. 								<tr>
    457. 

  457. 									<td class="name"><code>i1</code></td>
    458. 

  458. 									<td class="description last"><p>Index of first vertex.</p></td>
    459. 

  459. 								</tr>
    460. 

  460. 								<tr>
    461. 

  461. 									<td class="name"><code>i2</code></td>
    462. 

  462. 									<td class="description last"><p>Index of second vertex.</p></td>
    463. 

  463. 								</tr>
    464. 

  464. 								<tr>
    465. 

  465. 									<td class="name"><code>i3</code></td>
    466. 

  466. 									<td class="description last"><p>Index of third vertex.</p></td>
    467. 

  467. 								</tr>
    468. 

  468. 								<tr>
    469. 

  469. 									<td class="name"><code>barycoord</code></td>
    470. 

  470. 									<td class="description last"><p>The barycoordinate value to use to interpolate.</p></td>
    471. 

  471. 								</tr>
    472. 

  472. 								<tr>
    473. 

  473. 									<td class="name"><code>target</code></td>
    474. 

  474. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    475. 

  475. 								</tr>
    476. 

  476. 							</tbody>
    477. 

  477. 						</table>
    478. 

  478. 						<dl class="details">
    479. 

  479. 							<dt class="tag-returns"><strong>Returns:</strong> The interpolated attribute value.</dt>
    480. 

  480. 						</dl>
    481. 

  481. 					</div>
    482. 

  482. 					<h3 class="name name-method" id=".getInterpolation" translate="no">.<a href="#.getInterpolation">getInterpolation</a><span class="signature">( point : <span class="param-type">Vector3</span>, p1 : <span class="param-type">Vector3</span>, p2 : <span class="param-type">Vector3</span>, p3 : <span class="param-type">Vector3</span>, v1 : <span class="param-type">Vector3</span>, v2 : <span class="param-type">Vector3</span>, v3 : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    483. 

  483. 					<div class="method">
    484. 

  484. 						<div class="description">
    485. 

  485. 							<p>Computes the value barycentrically interpolated for the given point on the
    486. 

  486. triangle. Returns <code>null</code> if the triangle is degenerate.</p>
    487. 

  487. 						</div>
    488. 

  488. 						<table class="params">
    489. 

  489. 							<tbody>
    490. 

  490. 								<tr>
    491. 

  491. 									<td class="name"><code>point</code></td>
    492. 

  492. 									<td class="description last"><p>Position of interpolated point.</p></td>
    493. 

  493. 								</tr>
    494. 

  494. 								<tr>
    495. 

  495. 									<td class="name"><code>p1</code></td>
    496. 

  496. 									<td class="description last"><p>The first corner of the triangle.</p></td>
    497. 

  497. 								</tr>
    498. 

  498. 								<tr>
    499. 

  499. 									<td class="name"><code>p2</code></td>
    500. 

  500. 									<td class="description last"><p>The second corner of the triangle.</p></td>
    501. 

  501. 								</tr>
    502. 

  502. 								<tr>
    503. 

  503. 									<td class="name"><code>p3</code></td>
    504. 

  504. 									<td class="description last"><p>The third corner of the triangle.</p></td>
    505. 

  505. 								</tr>
    506. 

  506. 								<tr>
    507. 

  507. 									<td class="name"><code>v1</code></td>
    508. 

  508. 									<td class="description last"><p>Value to interpolate of first vertex.</p></td>
    509. 

  509. 								</tr>
    510. 

  510. 								<tr>
    511. 

  511. 									<td class="name"><code>v2</code></td>
    512. 

  512. 									<td class="description last"><p>Value to interpolate of second vertex.</p></td>
    513. 

  513. 								</tr>
    514. 

  514. 								<tr>
    515. 

  515. 									<td class="name"><code>v3</code></td>
    516. 

  516. 									<td class="description last"><p>Value to interpolate of third vertex.</p></td>
    517. 

  517. 								</tr>
    518. 

  518. 								<tr>
    519. 

  519. 									<td class="name"><code>target</code></td>
    520. 

  520. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    521. 

  521. 								</tr>
    522. 

  522. 							</tbody>
    523. 

  523. 						</table>
    524. 

  524. 						<dl class="details">
    525. 

  525. 							<dt class="tag-returns"><strong>Returns:</strong> The interpolated value.</dt>
    526. 

  526. 						</dl>
    527. 

  527. 					</div>
    528. 

  528. 					<h3 class="name name-method" id=".getNormal" translate="no">.<a href="#.getNormal">getNormal</a><span class="signature">( a : <span class="param-type">Vector3</span>, b : <span class="param-type">Vector3</span>, c : <span class="param-type">Vector3</span>, target : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : <a href="Vector3.html">Vector3</a></span> </h3>
    529. 

  529. 					<div class="method">
    530. 

  530. 						<div class="description">
    531. 

  531. 							<p>Computes the normal vector of a triangle.</p>
    532. 

  532. 						</div>
    533. 

  533. 						<table class="params">
    534. 

  534. 							<tbody>
    535. 

  535. 								<tr>
    536. 

  536. 									<td class="name"><code>a</code></td>
    537. 

  537. 									<td class="description last"><p>The first corner of the triangle.</p></td>
    538. 

  538. 								</tr>
    539. 

  539. 								<tr>
    540. 

  540. 									<td class="name"><code>b</code></td>
    541. 

  541. 									<td class="description last"><p>The second corner of the triangle.</p></td>
    542. 

  542. 								</tr>
    543. 

  543. 								<tr>
    544. 

  544. 									<td class="name"><code>c</code></td>
    545. 

  545. 									<td class="description last"><p>The third corner of the triangle.</p></td>
    546. 

  546. 								</tr>
    547. 

  547. 								<tr>
    548. 

  548. 									<td class="name"><code>target</code></td>
    549. 

  549. 									<td class="description last"><p>The target vector that is used to store the method's result.</p></td>
    550. 

  550. 								</tr>
    551. 

  551. 							</tbody>
    552. 

  552. 						</table>
    553. 

  553. 						<dl class="details">
    554. 

  554. 							<dt class="tag-returns"><strong>Returns:</strong> The triangle's normal.</dt>
    555. 

  555. 						</dl>
    556. 

  556. 					</div>
    557. 

  557. 					<h3 class="name name-method" id=".isFrontFacing" translate="no">.<a href="#.isFrontFacing">isFrontFacing</a><span class="signature">( a : <span class="param-type">Vector3</span>, b : <span class="param-type">Vector3</span>, c : <span class="param-type">Vector3</span>, direction : <span class="param-type">Vector3</span> )</span><span class="type-signature"> : boolean</span> </h3>
    558. 

  558. 					<div class="method">
    559. 

  559. 						<div class="description">
    560. 

  560. 							<p>Returns <code>true</code> if the triangle is oriented towards the given direction.</p>
    561. 

  561. 						</div>
    562. 

  562. 						<table class="params">
    563. 

  563. 							<tbody>
    564. 

  564. 								<tr>
    565. 

  565. 									<td class="name"><code>a</code></td>
    566. 

  566. 									<td class="description last"><p>The first corner of the triangle.</p></td>
    567. 

  567. 								</tr>
    568. 

  568. 								<tr>
    569. 

  569. 									<td class="name"><code>b</code></td>
    570. 

  570. 									<td class="description last"><p>The second corner of the triangle.</p></td>
    571. 

  571. 								</tr>
    572. 

  572. 								<tr>
    573. 

  573. 									<td class="name"><code>c</code></td>
    574. 

  574. 									<td class="description last"><p>The third corner of the triangle.</p></td>
    575. 

  575. 								</tr>
    576. 

  576. 								<tr>
    577. 

  577. 									<td class="name"><code>direction</code></td>
    578. 

  578. 									<td class="description last"><p>The (normalized) direction vector.</p></td>
    579. 

  579. 								</tr>
    580. 

  580. 							</tbody>
    581. 

  581. 						</table>
    582. 

  582. 						<dl class="details">
    583. 

  583. 							<dt class="tag-returns"><strong>Returns:</strong> Whether the triangle is oriented towards the given direction or not.</dt>
    584. 

  584. 						</dl>
    585. 

  585. 					</div>
    586. 

  586. 				<h2 class="subsection-title">Source</h2>
    587. 

  587. 				<p>
    588. 

  588. 					<a href="https://github.com/mrdoob/three.js/blob/master/src/math/Triangle.js" target="_blank" rel="noopener" translate="no">src/math/Triangle.js</a>
    589. 

  589. 				</p>
    590. 

  590. 			</article>
    591. 

  591. 		</section>
    592. 

  592. <script src="../scripts/linenumber.js"></script>
    593. 

  593. <script src="../scripts/page.js"></script>
    594. 

  594. </body>
    595. 

  595. </html>
    596.
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