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Interpolant.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>Interpolant - 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">Interpolant</h1>
    13. 

  13. 		<section>
    14. 

  14. 			<header>
    15. 

  15. 				<div class="class-description"><p>Abstract base class of interpolants over parametric samples.</p>
    16. 

  16. <p>The parameter domain is one dimensional, typically the time or a path
    17. 

  17. along a curve defined by the data.</p>
    18. 

  18. <p>The sample values can have any dimensionality and derived classes may
    19. 

  19. apply special interpretations to the data.</p>
    20. 

  20. <p>This class provides the interval seek in a Template Method, deferring
    21. 

  21. the actual interpolation to derived classes.</p>
    22. 

  22. <p>Time complexity is O(1) for linear access crossing at most two points
    23. 

  23. and O(log N) for random access, where N is the number of positions.</p>
    24. 

  24. <p>References: <a href="http://www.oodesign.com/template-method-pattern.html">http://www.oodesign.com/template-method-pattern.html</a></p></div>
    25. 

  25. 			</header>
    26. 

  26. 			<article>
    27. 

  27. 				<div class="container-overview">
    28. 

  28. 					<h2>Constructor</h2>
    29. 

  29. 					<h3 class="name name-method" id="Interpolant" translate="no">new <a href="#Interpolant">Interpolant</a><span class="signature">( parameterPositions : <span class="param-type">TypedArray</span>, sampleValues : <span class="param-type">TypedArray</span>, sampleSize : <span class="param-type">number</span>, resultBuffer : <span class="param-type">TypedArray</span> )</span> <span class="type-signature">(abstract) </span></h3>
    30. 

  30. 					<div class="method">
    31. 

  31. 						<div class="description">
    32. 

  32. 							<p>Constructs a new interpolant.</p>
    33. 

  33. 						</div>
    34. 

  34. 						<table class="params">
    35. 

  35. 							<tbody>
    36. 

  36. 								<tr>
    37. 

  37. 									<td class="name"><code>parameterPositions</code></td>
    38. 

  38. 									<td class="description last"><p>The parameter positions hold the interpolation factors.</p></td>
    39. 

  39. 								</tr>
    40. 

  40. 								<tr>
    41. 

  41. 									<td class="name"><code>sampleValues</code></td>
    42. 

  42. 									<td class="description last"><p>The sample values.</p></td>
    43. 

  43. 								</tr>
    44. 

  44. 								<tr>
    45. 

  45. 									<td class="name"><code>sampleSize</code></td>
    46. 

  46. 									<td class="description last"><p>The sample size</p></td>
    47. 

  47. 								</tr>
    48. 

  48. 								<tr>
    49. 

  49. 									<td class="name"><code>resultBuffer</code></td>
    50. 

  50. 									<td class="description last"><p>The result buffer.</p></td>
    51. 

  51. 								</tr>
    52. 

  52. 							</tbody>
    53. 

  53. 						</table>
    54. 

  54. 					</div>
    55. 

  55. 				</div>
    56. 

  56. 				<h2 class="subsection-title">Properties</h2>
    57. 

  57. 				<div class="member">
    58. 

  58. 					<h3 class="name" id="DefaultSettings_" translate="no">.<a href="#DefaultSettings_">DefaultSettings_</a><span class="type-signature"> : Object</span> </h3>
    59. 

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

  60. 						<p>The default settings object.</p>
    61. 

  61. 					</div>
    62. 

  62. 				</div>
    63. 

  63. 				<div class="member">
    64. 

  64. 					<h3 class="name" id="parameterPositions" translate="no">.<a href="#parameterPositions">parameterPositions</a><span class="type-signature"> : TypedArray</span> </h3>
    65. 

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

  66. 						<p>The parameter positions.</p>
    67. 

  67. 					</div>
    68. 

  68. 				</div>
    69. 

  69. 				<div class="member">
    70. 

  70. 					<h3 class="name" id="resultBuffer" translate="no">.<a href="#resultBuffer">resultBuffer</a><span class="type-signature"> : TypedArray</span> </h3>
    71. 

  71. 					<div class="description">
    72. 

  72. 						<p>The result buffer.</p>
    73. 

  73. 					</div>
    74. 

  74. 				</div>
    75. 

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

  76. 					<h3 class="name" id="sampleValues" translate="no">.<a href="#sampleValues">sampleValues</a><span class="type-signature"> : TypedArray</span> </h3>
    77. 

  77. 					<div class="description">
    78. 

  78. 						<p>The sample values.</p>
    79. 

  79. 					</div>
    80. 

  80. 				</div>
    81. 

  81. 				<div class="member">
    82. 

  82. 					<h3 class="name" id="settings" translate="no">.<a href="#settings">settings</a><span class="type-signature"> : Object</span> </h3>
    83. 

  83. 					<div class="description">
    84. 

  84. 						<p>The interpolation settings.<br/>Default is <code>null</code>.</p>
    85. 

  85. 					</div>
    86. 

  86. 				</div>
    87. 

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

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

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

  90. 						<p>The value size.</p>
    91. 

  91. 					</div>
    92. 

  92. 				</div>
    93. 

  93. 				<h2 class="subsection-title">Methods</h2>
    94. 

  94. 					<h3 class="name name-method" id="copySampleValue_" translate="no">.<a href="#copySampleValue_">copySampleValue_</a><span class="signature">( index : <span class="param-type">number</span> )</span><span class="type-signature"> : TypedArray</span> </h3>
    95. 

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

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

  97. 							<p>Copies a sample value to the result buffer.</p>
    98. 

  98. 						</div>
    99. 

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

  100. 							<tbody>
    101. 

  101. 								<tr>
    102. 

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

  103. 									<td class="description last"><p>An index into the sample value buffer.</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> The result buffer.</dt>
    109. 

  109. 						</dl>
    110. 

  110. 					</div>
    111. 

  111. 					<h3 class="name name-method" id="evaluate" translate="no">.<a href="#evaluate">evaluate</a><span class="signature">( t : <span class="param-type">number</span> )</span><span class="type-signature"> : TypedArray</span> </h3>
    112. 

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

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

  114. 							<p>Evaluate the interpolant at position <code>t</code>.</p>
    115. 

  115. 						</div>
    116. 

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

  117. 							<tbody>
    118. 

  118. 								<tr>
    119. 

  119. 									<td class="name"><code>t</code></td>
    120. 

  120. 									<td class="description last"><p>The interpolation factor.</p></td>
    121. 

  121. 								</tr>
    122. 

  122. 							</tbody>
    123. 

  123. 						</table>
    124. 

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

  125. 							<dt class="tag-returns"><strong>Returns:</strong> The result buffer.</dt>
    126. 

  126. 						</dl>
    127. 

  127. 					</div>
    128. 

  128. 					<h3 class="name name-method" id="getSettings_" translate="no">.<a href="#getSettings_">getSettings_</a><span class="signature">()</span><span class="type-signature"> : Object</span> </h3>
    129. 

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

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

  131. 							<p>Returns the interpolation settings.</p>
    132. 

  132. 						</div>
    133. 

  133. 						<dl class="details">
    134. 

  134. 							<dt class="tag-returns"><strong>Returns:</strong> The interpolation settings.</dt>
    135. 

  135. 						</dl>
    136. 

  136. 					</div>
    137. 

  137. 					<h3 class="name name-method" id="interpolate_" translate="no">.<a href="#interpolate_">interpolate_</a><span class="signature">( i1 : <span class="param-type">number</span>, t0 : <span class="param-type">number</span>, t : <span class="param-type">number</span>, t1 : <span class="param-type">number</span> )</span><span class="type-signature"> : TypedArray</span> <span class="type-signature">(abstract) </span></h3>
    138. 

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

  139. 						<div class="description">
    140. 

  140. 							<p>Copies a sample value to the result buffer.</p>
    141. 

  141. 						</div>
    142. 

  142. 						<table class="params">
    143. 

  143. 							<tbody>
    144. 

  144. 								<tr>
    145. 

  145. 									<td class="name"><code>i1</code></td>
    146. 

  146. 									<td class="description last"><p>An index into the sample value buffer.</p></td>
    147. 

  147. 								</tr>
    148. 

  148. 								<tr>
    149. 

  149. 									<td class="name"><code>t0</code></td>
    150. 

  150. 									<td class="description last"><p>The previous interpolation factor.</p></td>
    151. 

  151. 								</tr>
    152. 

  152. 								<tr>
    153. 

  153. 									<td class="name"><code>t</code></td>
    154. 

  154. 									<td class="description last"><p>The current interpolation factor.</p></td>
    155. 

  155. 								</tr>
    156. 

  156. 								<tr>
    157. 

  157. 									<td class="name"><code>t1</code></td>
    158. 

  158. 									<td class="description last"><p>The next interpolation factor.</p></td>
    159. 

  159. 								</tr>
    160. 

  160. 							</tbody>
    161. 

  161. 						</table>
    162. 

  162. 						<dl class="details">
    163. 

  163. 							<dt class="tag-returns"><strong>Returns:</strong> The result buffer.</dt>
    164. 

  164. 						</dl>
    165. 

  165. 					</div>
    166. 

  166. 					<h3 class="name name-method" id="intervalChanged_" translate="no">.<a href="#intervalChanged_">intervalChanged_</a><span class="signature">( i1 : <span class="param-type">number</span>, t0 : <span class="param-type">number</span>, t : <span class="param-type">number</span> )</span> </h3>
    167. 

  167. 					<div class="method">
    168. 

  168. 						<div class="description">
    169. 

  169. 							<p>Optional method that is executed when the interval has changed.</p>
    170. 

  170. 						</div>
    171. 

  171. 						<table class="params">
    172. 

  172. 							<tbody>
    173. 

  173. 								<tr>
    174. 

  174. 									<td class="name"><code>i1</code></td>
    175. 

  175. 									<td class="description last"><p>An index into the sample value buffer.</p></td>
    176. 

  176. 								</tr>
    177. 

  177. 								<tr>
    178. 

  178. 									<td class="name"><code>t0</code></td>
    179. 

  179. 									<td class="description last"><p>The previous interpolation factor.</p></td>
    180. 

  180. 								</tr>
    181. 

  181. 								<tr>
    182. 

  182. 									<td class="name"><code>t</code></td>
    183. 

  183. 									<td class="description last"><p>The current interpolation factor.</p></td>
    184. 

  184. 								</tr>
    185. 

  185. 							</tbody>
    186. 

  186. 						</table>
    187. 

  187. 					</div>
    188. 

  188. 				<h2 class="subsection-title">Source</h2>
    189. 

  189. 				<p>
    190. 

  190. 					<a href="https://github.com/mrdoob/three.js/blob/master/src/math/Interpolant.js" target="_blank" rel="noopener" translate="no">src/math/Interpolant.js</a>
    191. 

  191. 				</p>
    192. 

  192. 			</article>
    193. 

  193. 		</section>
    194. 

  194. <script src="../scripts/linenumber.js"></script>
    195. 

  195. <script src="../scripts/page.js"></script>
    196. 

  196. </body>
    197. 

  197. </html>
    198.
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