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KeyframeTrack.html

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  1. <!DOCTYPE html>
    2. 

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

  3. <head>
    4. 

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

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

  13. 		<section>
    14. 

  14. 			<header>
    15. 

  15. 				<div class="class-description"><p>Represents s a timed sequence of keyframes, which are composed of lists of
    16. 

  16. times and related values, and which are used to animate a specific property
    17. 

  17. of an object.</p></div>
    18. 

  18. 			</header>
    19. 

  19. 			<article>
    20. 

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

  21. 					<h2>Constructor</h2>
    22. 

  22. 					<h3 class="name name-method" id="KeyframeTrack" translate="no">new <a href="#KeyframeTrack">KeyframeTrack</a><span class="signature">( name : <span class="param-type">string</span>, times : <span class="param-type">Array.&lt;number></span>, values : <span class="param-type">Array.&lt;(number|string|boolean)></span>, interpolation : <span class="param-type"><a href="global.html#InterpolateLinear">InterpolateLinear</a> | <a href="global.html#InterpolateDiscrete">InterpolateDiscrete</a> | <a href="global.html#InterpolateSmooth">InterpolateSmooth</a></span> )</span> </h3>
    23. 

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

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

  25. 							<p>Constructs a new keyframe track.</p>
    26. 

  26. 						</div>
    27. 

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

  28. 							<tbody>
    29. 

  29. 								<tr>
    30. 

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

  31. 										<strong>name</strong>
    32. 

  32. 									</td>
    33. 

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

  34. 										<p>The keyframe track's name.</p>
    35. 

  35. 									</td>
    36. 

  36. 								</tr>
    37. 

  37. 								<tr>
    38. 

  38. 									<td class="name">
    39. 

  39. 										<strong>times</strong>
    40. 

  40. 									</td>
    41. 

  41. 									<td class="description last">
    42. 

  42. 										<p>A list of keyframe times.</p>
    43. 

  43. 									</td>
    44. 

  44. 								</tr>
    45. 

  45. 								<tr>
    46. 

  46. 									<td class="name">
    47. 

  47. 										<strong>values</strong>
    48. 

  48. 									</td>
    49. 

  49. 									<td class="description last">
    50. 

  50. 										<p>A list of keyframe values.</p>
    51. 

  51. 									</td>
    52. 

  52. 								</tr>
    53. 

  53. 								<tr>
    54. 

  54. 									<td class="name">
    55. 

  55. 										<strong>interpolation</strong>
    56. 

  56. 									</td>
    57. 

  57. 									<td class="description last">
    58. 

  58. 										<p>The interpolation type.</p>
    59. 

  59. 									</td>
    60. 

  60. 								</tr>
    61. 

  61. 							</tbody>
    62. 

  62. 						</table>
    63. 

  63. 					</div>
    64. 

  64. 				</div>
    65. 

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

  66. 				<div class="member">
    67. 

  67. 					<h3 class="name" id="DefaultInterpolation" translate="no">.<a href="#DefaultInterpolation">DefaultInterpolation</a><span class="type-signature"> : <a href="global.html#InterpolateLinear">InterpolateLinear</a> | <a href="global.html#InterpolateDiscrete">InterpolateDiscrete</a> | <a href="global.html#InterpolateSmooth">InterpolateSmooth</a></span> </h3>
    68. 

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

  69. 						<p>The default interpolation type of this keyframe track.</p>
    70. 

  70. 						<p>Default is <code>InterpolateLinear</code>.</p>
    71. 

  71. 					</div>
    72. 

  72. 				</div>
    73. 

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

  74. 					<h3 class="name" id="TimeBufferType" translate="no">.<a href="#TimeBufferType">TimeBufferType</a><span class="type-signature"> : TypedArray | Array</span> </h3>
    75. 

  75. 					<div class="description">
    76. 

  76. 						<p>The time buffer type of this keyframe track.</p>
    77. 

  77. 						<p>Default is <code>Float32Array.constructor</code>.</p>
    78. 

  78. 					</div>
    79. 

  79. 				</div>
    80. 

  80. 				<div class="member">
    81. 

  81. 					<h3 class="name" id="ValueBufferType" translate="no">.<a href="#ValueBufferType">ValueBufferType</a><span class="type-signature"> : TypedArray | Array</span> </h3>
    82. 

  82. 					<div class="description">
    83. 

  83. 						<p>The value buffer type of this keyframe track.</p>
    84. 

  84. 						<p>Default is <code>Float32Array.constructor</code>.</p>
    85. 

  85. 					</div>
    86. 

  86. 				</div>
    87. 

  87. 				<div class="member">
    88. 

  88. 					<h3 class="name" id="ValueTypeName" translate="no">.<a href="#ValueTypeName">ValueTypeName</a><span class="type-signature"> : String</span> </h3>
    89. 

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

  90. 						<p>The value type name.</p>
    91. 

  91. 						<p>Default is <code>''</code>.</p>
    92. 

  92. 					</div>
    93. 

  93. 				</div>
    94. 

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

  95. 					<h3 class="name" id="name" translate="no">.<a href="#name">name</a><span class="type-signature"> : string</span> </h3>
    96. 

  96. 					<div class="description">
    97. 

  97. 						<p>The track's name can refer to morph targets or bones or
    98. 

  98. possibly other values within an animated object. See PropertyBinding#parseTrackName
    99. 

  99. for the forms of strings that can be parsed for property binding.</p>
    100. 

  100. 					</div>
    101. 

  101. 				</div>
    102. 

  102. 				<div class="member">
    103. 

  103. 					<h3 class="name" id="times" translate="no">.<a href="#times">times</a><span class="type-signature"> : Float32Array</span> </h3>
    104. 

  104. 					<div class="description">
    105. 

  105. 						<p>The keyframe times.</p>
    106. 

  106. 					</div>
    107. 

  107. 				</div>
    108. 

  108. 				<div class="member">
    109. 

  109. 					<h3 class="name" id="values" translate="no">.<a href="#values">values</a><span class="type-signature"> : Float32Array</span> </h3>
    110. 

  110. 					<div class="description">
    111. 

  111. 						<p>The keyframe values.</p>
    112. 

  112. 					</div>
    113. 

  113. 				</div>
    114. 

  114. 				<h2 class="subsection-title">Methods</h2>
    115. 

  115. 					<h3 class="name name-method" id="InterpolantFactoryMethodDiscrete" translate="no">.<a href="#InterpolantFactoryMethodDiscrete">InterpolantFactoryMethodDiscrete</a><span class="signature">( result : <span class="param-type">TypedArray</span> )</span><span class="type-signature"> : <a href="DiscreteInterpolant.html">DiscreteInterpolant</a></span> </h3>
    116. 

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

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

  118. 							<p>Factory method for creating a new discrete interpolant.</p>
    119. 

  119. 						</div>
    120. 

  120. 						<table class="params">
    121. 

  121. 							<tbody>
    122. 

  122. 								<tr>
    123. 

  123. 									<td class="name">
    124. 

  124. 										<strong>result</strong>
    125. 

  125. 									</td>
    126. 

  126. 									<td class="description last">
    127. 

  127. 										<p>The result buffer.</p>
    128. 

  128. 									</td>
    129. 

  129. 								</tr>
    130. 

  130. 							</tbody>
    131. 

  131. 						</table>
    132. 

  132. 						<dl class="details">
    133. 

  133. 							<dt class="tag-returns"><strong>Returns:</strong> The new interpolant.</dt>
    134. 

  134. 						</dl>
    135. 

  135. 					</div>
    136. 

  136. 					<h3 class="name name-method" id="InterpolantFactoryMethodLinear" translate="no">.<a href="#InterpolantFactoryMethodLinear">InterpolantFactoryMethodLinear</a><span class="signature">( result : <span class="param-type">TypedArray</span> )</span><span class="type-signature"> : <a href="LinearInterpolant.html">LinearInterpolant</a></span> </h3>
    137. 

  137. 					<div class="method">
    138. 

  138. 						<div class="description">
    139. 

  139. 							<p>Factory method for creating a new linear interpolant.</p>
    140. 

  140. 						</div>
    141. 

  141. 						<table class="params">
    142. 

  142. 							<tbody>
    143. 

  143. 								<tr>
    144. 

  144. 									<td class="name">
    145. 

  145. 										<strong>result</strong>
    146. 

  146. 									</td>
    147. 

  147. 									<td class="description last">
    148. 

  148. 										<p>The result buffer.</p>
    149. 

  149. 									</td>
    150. 

  150. 								</tr>
    151. 

  151. 							</tbody>
    152. 

  152. 						</table>
    153. 

  153. 						<dl class="details">
    154. 

  154. 							<dt class="tag-returns"><strong>Returns:</strong> The new interpolant.</dt>
    155. 

  155. 						</dl>
    156. 

  156. 					</div>
    157. 

  157. 					<h3 class="name name-method" id="InterpolantFactoryMethodSmooth" translate="no">.<a href="#InterpolantFactoryMethodSmooth">InterpolantFactoryMethodSmooth</a><span class="signature">( result : <span class="param-type">TypedArray</span> )</span><span class="type-signature"> : <a href="CubicInterpolant.html">CubicInterpolant</a></span> </h3>
    158. 

  158. 					<div class="method">
    159. 

  159. 						<div class="description">
    160. 

  160. 							<p>Factory method for creating a new smooth interpolant.</p>
    161. 

  161. 						</div>
    162. 

  162. 						<table class="params">
    163. 

  163. 							<tbody>
    164. 

  164. 								<tr>
    165. 

  165. 									<td class="name">
    166. 

  166. 										<strong>result</strong>
    167. 

  167. 									</td>
    168. 

  168. 									<td class="description last">
    169. 

  169. 										<p>The result buffer.</p>
    170. 

  170. 									</td>
    171. 

  171. 								</tr>
    172. 

  172. 							</tbody>
    173. 

  173. 						</table>
    174. 

  174. 						<dl class="details">
    175. 

  175. 							<dt class="tag-returns"><strong>Returns:</strong> The new interpolant.</dt>
    176. 

  176. 						</dl>
    177. 

  177. 					</div>
    178. 

  178. 					<h3 class="name name-method" id="clone" translate="no">.<a href="#clone">clone</a><span class="signature">()</span><span class="type-signature"> : <a href="KeyframeTrack.html">KeyframeTrack</a></span> </h3>
    179. 

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

  180. 						<div class="description">
    181. 

  181. 							<p>Returns a new keyframe track with copied values from this instance.</p>
    182. 

  182. 						</div>
    183. 

  183. 						<dl class="details">
    184. 

  184. 							<dt class="tag-returns"><strong>Returns:</strong> A clone of this instance.</dt>
    185. 

  185. 						</dl>
    186. 

  186. 					</div>
    187. 

  187. 					<h3 class="name name-method" id="getInterpolation" translate="no">.<a href="#getInterpolation">getInterpolation</a><span class="signature">()</span><span class="type-signature"> : <a href="global.html#InterpolateLinear">InterpolateLinear</a> | <a href="global.html#InterpolateDiscrete">InterpolateDiscrete</a> | <a href="global.html#InterpolateSmooth">InterpolateSmooth</a></span> </h3>
    188. 

  188. 					<div class="method">
    189. 

  189. 						<div class="description">
    190. 

  190. 							<p>Returns the current interpolation type.</p>
    191. 

  191. 						</div>
    192. 

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

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

  194. 						</dl>
    195. 

  195. 					</div>
    196. 

  196. 					<h3 class="name name-method" id="getValueSize" translate="no">.<a href="#getValueSize">getValueSize</a><span class="signature">()</span><span class="type-signature"> : number</span> </h3>
    197. 

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

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

  199. 							<p>Returns the value size.</p>
    200. 

  200. 						</div>
    201. 

  201. 						<dl class="details">
    202. 

  202. 							<dt class="tag-returns"><strong>Returns:</strong> The value size.</dt>
    203. 

  203. 						</dl>
    204. 

  204. 					</div>
    205. 

  205. 					<h3 class="name name-method" id="optimize" translate="no">.<a href="#optimize">optimize</a><span class="signature">()</span><span class="type-signature"> : <a href="AnimationClip.html">AnimationClip</a></span> </h3>
    206. 

  206. 					<div class="method">
    207. 

  207. 						<div class="description">
    208. 

  208. 							<p>Optimizes this keyframe track by removing equivalent sequential keys (which are
    209. 

  209. common in morph target sequences).</p>
    210. 

  210. 						</div>
    211. 

  211. 						<dl class="details">
    212. 

  212. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this animation clip.</dt>
    213. 

  213. 						</dl>
    214. 

  214. 					</div>
    215. 

  215. 					<h3 class="name name-method" id="scale" translate="no">.<a href="#scale">scale</a><span class="signature">( timeScale : <span class="param-type">number</span> )</span><span class="type-signature"> : <a href="KeyframeTrack.html">KeyframeTrack</a></span> </h3>
    216. 

  216. 					<div class="method">
    217. 

  217. 						<div class="description">
    218. 

  218. 							<p>Scale all keyframe times by a factor (useful for frame - seconds conversions).</p>
    219. 

  219. 						</div>
    220. 

  220. 						<table class="params">
    221. 

  221. 							<tbody>
    222. 

  222. 								<tr>
    223. 

  223. 									<td class="name">
    224. 

  224. 										<strong>timeScale</strong>
    225. 

  225. 									</td>
    226. 

  226. 									<td class="description last">
    227. 

  227. 										<p>The time scale.</p>
    228. 

  228. 									</td>
    229. 

  229. 								</tr>
    230. 

  230. 							</tbody>
    231. 

  231. 						</table>
    232. 

  232. 						<dl class="details">
    233. 

  233. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this keyframe track.</dt>
    234. 

  234. 						</dl>
    235. 

  235. 					</div>
    236. 

  236. 					<h3 class="name name-method" id="setInterpolation" translate="no">.<a href="#setInterpolation">setInterpolation</a><span class="signature">( interpolation : <span class="param-type"><a href="global.html#InterpolateLinear">InterpolateLinear</a> | <a href="global.html#InterpolateDiscrete">InterpolateDiscrete</a> | <a href="global.html#InterpolateSmooth">InterpolateSmooth</a></span> )</span><span class="type-signature"> : <a href="KeyframeTrack.html">KeyframeTrack</a></span> </h3>
    237. 

  237. 					<div class="method">
    238. 

  238. 						<div class="description">
    239. 

  239. 							<p>Defines the interpolation factor method for this keyframe track.</p>
    240. 

  240. 						</div>
    241. 

  241. 						<table class="params">
    242. 

  242. 							<tbody>
    243. 

  243. 								<tr>
    244. 

  244. 									<td class="name">
    245. 

  245. 										<strong>interpolation</strong>
    246. 

  246. 									</td>
    247. 

  247. 									<td class="description last">
    248. 

  248. 										<p>The interpolation type.</p>
    249. 

  249. 									</td>
    250. 

  250. 								</tr>
    251. 

  251. 							</tbody>
    252. 

  252. 						</table>
    253. 

  253. 						<dl class="details">
    254. 

  254. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this keyframe track.</dt>
    255. 

  255. 						</dl>
    256. 

  256. 					</div>
    257. 

  257. 					<h3 class="name name-method" id="shift" translate="no">.<a href="#shift">shift</a><span class="signature">( timeOffset : <span class="param-type">number</span> )</span><span class="type-signature"> : <a href="KeyframeTrack.html">KeyframeTrack</a></span> </h3>
    258. 

  258. 					<div class="method">
    259. 

  259. 						<div class="description">
    260. 

  260. 							<p>Moves all keyframes either forward or backward in time.</p>
    261. 

  261. 						</div>
    262. 

  262. 						<table class="params">
    263. 

  263. 							<tbody>
    264. 

  264. 								<tr>
    265. 

  265. 									<td class="name">
    266. 

  266. 										<strong>timeOffset</strong>
    267. 

  267. 									</td>
    268. 

  268. 									<td class="description last">
    269. 

  269. 										<p>The offset to move the time values.</p>
    270. 

  270. 									</td>
    271. 

  271. 								</tr>
    272. 

  272. 							</tbody>
    273. 

  273. 						</table>
    274. 

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

  275. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this keyframe track.</dt>
    276. 

  276. 						</dl>
    277. 

  277. 					</div>
    278. 

  278. 					<h3 class="name name-method" id="trim" translate="no">.<a href="#trim">trim</a><span class="signature">( startTime : <span class="param-type">number</span>, endTime : <span class="param-type">number</span> )</span><span class="type-signature"> : <a href="KeyframeTrack.html">KeyframeTrack</a></span> </h3>
    279. 

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

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

  281. 							<p>Removes keyframes before and after animation without changing any values within the defined time range.</p>
    282. 

  282. <p>Note: The method does not shift around keys to the start of the track time, because for interpolated
    283. 

  283. keys this will change their values</p>
    284. 

  284. 						</div>
    285. 

  285. 						<table class="params">
    286. 

  286. 							<tbody>
    287. 

  287. 								<tr>
    288. 

  288. 									<td class="name">
    289. 

  289. 										<strong>startTime</strong>
    290. 

  290. 									</td>
    291. 

  291. 									<td class="description last">
    292. 

  292. 										<p>The start time.</p>
    293. 

  293. 									</td>
    294. 

  294. 								</tr>
    295. 

  295. 								<tr>
    296. 

  296. 									<td class="name">
    297. 

  297. 										<strong>endTime</strong>
    298. 

  298. 									</td>
    299. 

  299. 									<td class="description last">
    300. 

  300. 										<p>The end time.</p>
    301. 

  301. 									</td>
    302. 

  302. 								</tr>
    303. 

  303. 							</tbody>
    304. 

  304. 						</table>
    305. 

  305. 						<dl class="details">
    306. 

  306. 							<dt class="tag-returns"><strong>Returns:</strong> A reference to this keyframe track.</dt>
    307. 

  307. 						</dl>
    308. 

  308. 					</div>
    309. 

  309. 					<h3 class="name name-method" id="validate" translate="no">.<a href="#validate">validate</a><span class="signature">()</span><span class="type-signature"> : boolean</span> </h3>
    310. 

  310. 					<div class="method">
    311. 

  311. 						<div class="description">
    312. 

  312. 							<p>Performs minimal validation on the keyframe track. Returns <code>true</code> if the values
    313. 

  313. are valid.</p>
    314. 

  314. 						</div>
    315. 

  315. 						<dl class="details">
    316. 

  316. 							<dt class="tag-returns"><strong>Returns:</strong> Whether the keyframes are valid or not.</dt>
    317. 

  317. 						</dl>
    318. 

  318. 					</div>
    319. 

  319. 				<h2 class="subsection-title">Static Methods</h2>
    320. 

  320. 					<h3 class="name name-method" id=".toJSON" translate="no">.<a href="#.toJSON">toJSON</a><span class="signature">( track : <span class="param-type"><a href="KeyframeTrack.html">KeyframeTrack</a></span> )</span><span class="type-signature"> : Object</span> </h3>
    321. 

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

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

  323. 							<p>Converts the keyframe track to JSON.</p>
    324. 

  324. 						</div>
    325. 

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

  326. 							<tbody>
    327. 

  327. 								<tr>
    328. 

  328. 									<td class="name">
    329. 

  329. 										<strong>track</strong>
    330. 

  330. 									</td>
    331. 

  331. 									<td class="description last">
    332. 

  332. 										<p>The keyframe track to serialize.</p>
    333. 

  333. 									</td>
    334. 

  334. 								</tr>
    335. 

  335. 							</tbody>
    336. 

  336. 						</table>
    337. 

  337. 						<dl class="details">
    338. 

  338. 							<dt class="tag-returns"><strong>Returns:</strong> The serialized keyframe track as JSON.</dt>
    339. 

  339. 						</dl>
    340. 

  340. 					</div>
    341. 

  341. 				<h2 class="subsection-title">Source</h2>
    342. 

  342. 				<p>
    343. 

  343. 					<a href="https://github.com/mrdoob/three.js/blob/master/src/animation/KeyframeTrack.js" translate="no" target="_blank" rel="noopener">src/animation/KeyframeTrack.js</a>
    344. 

  344. 				</p>
    345. 

  345. 			</article>
    346. 

  346. 		</section>
    347. 

  347. <script src="../scripts/linenumber.js"></script>
    348. 

  348. <script src="../scripts/page.js"></script>
    349. 

  349. </body>
    350. 

  350. </html>
    351.
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