Vector2.html 7.5 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="utf-8" />
  5. <base href="../../" />
  6. <script src="list.js"></script>
  7. <script src="page.js"></script>
  8. <link type="text/css" rel="stylesheet" href="page.css" />
  9. </head>
  10. <body>
  11. <h1>[name]</h1>
  12. <div class="desc">2D vector.</div>
  13. <h2>Example</h2>
  14. <code>var a = new THREE.Vector2( 0, 1 );
  15. var b = new THREE.Vector2( 1, 0 );
  16. var d = a.distanceTo( b );
  17. </code>
  18. <h2>Constructor</h2>
  19. <h3>[name]( [page:Float x], [page:Float y] )</h3>
  20. <div>
  21. x -- [page:Float] representing the x value of the vector <br />
  22. y -- [page:Float] representing the y value of the vector
  23. </div>
  24. <div>
  25. A vector in 2 dimensional space
  26. </div>
  27. <h2>Properties</h2>
  28. <h3>[property:Float x]</h3>
  29. <h3>[property:Float y]</h3>
  30. <h2>Methods</h2>
  31. <h3>[method:Vector2 set]( [page:Float x], [page:Float y] ) [page:Vector2 this]</h3>
  32. <div>
  33. Sets value of this vector.
  34. </div>
  35. <h3>[method:Vector2 copy]( [page:Vector2 v] ) [page:Vector2 this]</h3>
  36. <div>
  37. Copies value of *v* to this vector.
  38. </div>
  39. <h3>[method:Vector2 add]( [page:Vector2 v] ) [page:Vector2 this]</h3>
  40. <div>
  41. Adds *v* to this vector.
  42. </div>
  43. <h3>[method:Vector2 addVectors]( [page:Vector2 a], [page:Vector2 b] ) [page:Vector2 this]</h3>
  44. <div>
  45. Sets this vector to *a + b*.
  46. </div>
  47. <h3>[method:Vector2 addScaledVector]( [page:Vector2 v], [page:Float s] ) [page:Vector2 this]</h3>
  48. <div>
  49. Adds the multiple of v and s to this vector.
  50. </div>
  51. <h3>[method:Vector2 sub]( [page:Vector2 v] ) [page:Vector2 this]</h3>
  52. <div>
  53. Subtracts *v* from this vector.
  54. </div>
  55. <h3>[method:Vector2 subVectors]( [page:Vector2 a], [page:Vector2 b] ) [page:Vector2 this]</h3>
  56. <div>
  57. Sets this vector to *a - b*.
  58. </div>
  59. <h3>[method:Vector2 multiplyScalar]( [page:Float s] ) [page:Vector2 this]</h3>
  60. <div>
  61. Multiplies this vector by scalar *s*.
  62. </div>
  63. <h3>[method:Vector2 divideScalar]( [page:Float s] ) [page:Vector2 this]</h3>
  64. <div>
  65. Divides this vector by scalar *s*.<br />
  66. Set vector to *( 0, 0 )* if *s == 0*.
  67. </div>
  68. <h3>[method:Vector2 negate]() [page:Vector2 this]</h3>
  69. <div>
  70. Inverts this vector.
  71. </div>
  72. <h3>[method:Float dot]( [page:Vector2 v] )</h3>
  73. <div>
  74. Computes dot product of this vector and *v*.
  75. </div>
  76. <h3>[method:Float lengthSq]()</h3>
  77. <div>
  78. Computes squared length of this vector.
  79. </div>
  80. <h3>[method:Float length]()</h3>
  81. <div>
  82. Computes length of this vector.
  83. </div>
  84. <h3>[method:Float lengthManhattan]()</h3>
  85. <div>
  86. Computes Manhattan length of this vector.<br />
  87. [link:http://en.wikipedia.org/wiki/Taxicab_geometry]
  88. </div>
  89. <h3>[method:Vector2 normalize]() [page:Vector2 this]</h3>
  90. <div>
  91. Normalizes this vector.
  92. </div>
  93. <h3>[method:Float distanceTo]( [page:Vector2 v] )</h3>
  94. <div>
  95. Computes distance of this vector to *v*.
  96. </div>
  97. <h3>[method:Float distanceToSquared]( [page:Vector2 v] )</h3>
  98. <div>
  99. Computes squared distance of this vector to *v*.
  100. </div>
  101. <h3>[method:Vector2 setLength]( [page:Float l] ) [page:Vector2 this]</h3>
  102. <div>
  103. Normalizes this vector and multiplies it by *l*.
  104. </div>
  105. <h3>[method:Boolean equals]( [page:Vector2 v] )</h3>
  106. <div>
  107. Checks for strict equality of this vector and *v*.
  108. </div>
  109. <h3>[method:Vector2 clone]()</h3>
  110. <div>
  111. Clones this vector.
  112. </div>
  113. <h3>[method:Vector2 clamp]([page:Vector2 min], [page:Vector2 max]) [page:Vector2 this]</h3>
  114. <div>
  115. min -- [page:Vector2] containing the min x and y values in the desired range <br />
  116. max -- [page:Vector2] containing the max x and y values in the desired range
  117. </div>
  118. <div>
  119. If this vector's x or y value is greater than the max vector's x or y value, it is replaced by the corresponding value. <br /><br />
  120. If this vector's x or y value is less than the min vector's x or y value, it is replaced by the corresponding value.
  121. </div>
  122. <h3>[method:Vector2 clampScalar]([page:Float min], [page:Float max]) [page:Vector2 this]</h3>
  123. <div>
  124. min -- [page:Float] the minimum value the components will be clamped to <br />
  125. max -- [page:Float] the maximum value the components will be clamped to
  126. </div>
  127. <div>
  128. If this vector's x or y values are greater than the max value, they are replaced by the max value. <br /><br />
  129. If this vector's x or y values are less than the min value, they are replaced by the min value.
  130. </div>
  131. <h3>[method:Vector2 floor]()</h3>
  132. <div>
  133. The components of the vector are rounded downwards (towards negative infinity) to an integer value.
  134. </div>
  135. <h3>[method:Vector2 ceil]()</h3>
  136. <div>
  137. The components of the vector are rounded upwards (towards positive infinity) to an integer value.
  138. </div>
  139. <h3>[method:Vector2 round]()</h3>
  140. <div>
  141. The components of the vector are rounded towards the nearest integer value.
  142. </div>
  143. <h3>[method:Vector2 roundToZero]()</h3>
  144. <div>
  145. The components of the vector are rounded towards zero (up if negative, down if positive) to an integer value.
  146. </div>
  147. <h3>[method:Vector2 lerp]([page:Vector2 v], [page:Float alpha]) [page:Vector2 this]</h3>
  148. <div>
  149. v -- [page:Vector2] <br />
  150. alpha -- [page:Float] between 0 and 1;
  151. </div>
  152. <div>
  153. Linear interpolation between this vector and v, where alpha is the percent along the line.
  154. </div>
  155. <h3>[method:Vector2 lerpVectors]([page:Vector2 v1], [page:Vector2 v2], [page:Float alpha]) [page:Vector2 this]</h3>
  156. <div>
  157. v1 -- [page:Vector2] <br />
  158. v2 -- [page:Vector2] <br />
  159. alpha -- [page:Float] between 0 and 1.
  160. </div>
  161. <div>
  162. Sets this vector to be the vector linearly interpolated between *v1* and *v2* with *alpha* factor.
  163. </div>
  164. <h3>[method:undefined setComponent]([page:Integer index], [page:Float value])</h3>
  165. <div>
  166. index -- 0 or 1 <br />
  167. value -- [page:Float]
  168. </div>
  169. <div>
  170. if index equals 0 method replaces this.x with value. <br />
  171. if index equals 1 method replaces this.y with value.
  172. </div>
  173. <h3>[method:Vector2 addScalar]([page:Float s]) [page:Vector2 this]</h3>
  174. <div>
  175. s -- [page:Float]
  176. </div>
  177. <div>
  178. Add the scalar value s to this vector's x and y values.
  179. </div>
  180. <h3>[method:Float getComponent]([page:Integer index])</h3>
  181. <div>
  182. index -- 0 or 1
  183. </div>
  184. <div>
  185. if index equals 0 returns the x value. <br />
  186. if index equals 1 returns the y value.
  187. </div>
  188. <h3>[method:Vector2 fromArray]([page:Array array]) [page:Vector2 this]</h3>
  189. <div>
  190. array -- [page:Array] of length 2
  191. </div>
  192. <div>
  193. Sets this vector's x value to be array[0] and y value to be array[1].
  194. </div>
  195. <h3>[method:Array toArray]( [page:Array array] )</h3>
  196. <div>
  197. array -- Optional array to store the vector.
  198. </div>
  199. <div>
  200. Returns an array [x, y].
  201. </div>
  202. <h3>[method:Vector2 min]([page:Vector2 v]) [page:Vector2 this]</h3>
  203. <div>
  204. v -- [page:Vector2]
  205. </div>
  206. <div>
  207. If this vector's x or y value is greater than v's x or y value, replace that value with the corresponding min value.
  208. </div>
  209. <h3>[method:Vector2 max]([page:Vector2 v]) [page:Vector2 this]</h3>
  210. <div>
  211. v -- [page:Vector2]
  212. </div>
  213. <div>
  214. If this vector's x or y value is less than v's x or y value, replace that value with the corresponding max value.
  215. </div>
  216. <h3>[method:Vector2 setX]([page:Float x]) [page:Vector2 this]</h3>
  217. <div>
  218. x -- [page:Float]
  219. </div>
  220. <div>
  221. replace this vector's x value with x.
  222. </div>
  223. <h3>[method:Vector2 setY]([page:Float y]) [page:Vector2 this]</h3>
  224. <div>
  225. y -- [page:Float]
  226. </div>
  227. <div>
  228. replace this vector's y value with y.
  229. </div>
  230. <h2>Source</h2>
  231. [link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
  232. </body>
  233. </html>