Geometry.html 7.1 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="utf-8" />
  5. <script src="../../list.js"></script>
  6. <script src="../../page.js"></script>
  7. <link type="text/css" rel="stylesheet" href="../../page.css" />
  8. </head>
  9. <body>
  10. <h1>[name]</h1>
  11. <div class="desc">
  12. Base class for geometries.<br />
  13. A geometry holds all data necessary to describe a 3D model.
  14. </div>
  15. <h2>Example</h2>
  16. <code>var geometry = new THREE.Geometry();
  17. geometry.vertices.push(
  18. new THREE.Vector3( -10, 10, 0 ),
  19. new THREE.Vector3( -10, -10, 0 ),
  20. new THREE.Vector3( 10, -10, 0 )
  21. );
  22. geometry.faces.push( new THREE.Face3( 0, 1, 2 ) );
  23. geometry.computeBoundingSphere();
  24. </code>
  25. <h2>Constructor</h2>
  26. <h3>[name]()</h3>
  27. <div>
  28. The constructor takes no arguments.
  29. </div>
  30. <h2>Properties</h2>
  31. <h3>.[page:Integer id]</h3>
  32. <div>
  33. Unique number for this geometry instance.
  34. </div>
  35. <h3>.[page:String name]</h3>
  36. <div>
  37. Name for this geometry. Default is an empty string.
  38. </div>
  39. <h3>.[page:Array vertices]</h3>
  40. <div>
  41. Array of [page:Vector3 vertices].<br />
  42. The array of vertices holds every position of points in the model.<br />
  43. To signal an update in this array, [page:Geometry Geometry.verticesNeedUpdate] needs to be set to true.
  44. </div>
  45. <h3>.[page:Array colors]</h3>
  46. <div>
  47. Array of vertex [page:Color colors], matching number and order of vertices.<br />
  48. Used in [page:PointCloud] and [page:Line].<br />
  49. [page:Mesh Meshes] use per-face-use-of-vertex colors embedded directly in faces.<br />
  50. To signal an update in this array, [page:Geometry Geometry.colorsNeedUpdate] needs to be set to true.
  51. </div>
  52. <h3>.[page:Array faces]</h3>
  53. <div>
  54. Array of [page:Face3 triangles].<br />
  55. The array of faces describe how each vertex in the model is connected with each other.<br />
  56. To signal an update in this array, [page:Geometry Geometry.elementsNeedUpdate] needs to be set to true.
  57. </div>
  58. <h3>.[page:Array faceVertexUvs]</h3>
  59. <div>
  60. Array of face [page:UV] layers.<br />
  61. Each UV layer is an array of [page:UV]s matching the order and number of vertices in faces.<br />
  62. To signal an update in this array, [page:Geometry Geometry.uvsNeedUpdate] needs to be set to true.
  63. </div>
  64. <h3>.[page:Array morphTargets]</h3>
  65. <div>
  66. Array of morph targets. Each morph target is a Javascript object:
  67. <code>{ name: "targetName", vertices: [ new THREE.Vector3(), ... ] }</code>
  68. Morph vertices match number and order of primary vertices.
  69. </div>
  70. <h3>.[page:Array morphColors]</h3>
  71. <div>
  72. Array of morph colors. Morph colors have similar structure as morph targets, each color set is a Javascript object:
  73. <code>morphColor = { name: "colorName", colors: [ new THREE.Color(), ... ] }</code>
  74. Morph colors can match either the number and order of faces (face colors) or the number of vertices (vertex colors).
  75. </div>
  76. <h3>.[page:Array morphNormals]</h3>
  77. <div>
  78. Array of morph normals. Morph normals have similar structure as morph targets, each normal set is a Javascript object:
  79. <code>morphNormal = { name: "NormalName", normals: [ new THREE.Vector3(), ... ] }</code>
  80. </div>
  81. <h3>.[page:Array skinWeights]</h3>
  82. <div>
  83. Array of skinning weights, matching number and order of vertices.
  84. </div>
  85. <h3>.[page:Array skinIndices]</h3>
  86. <div>
  87. Array of skinning indices, matching number and order of vertices.
  88. </div>
  89. <h3>.[page:Object boundingBox]</h3>
  90. <div>
  91. Bounding box.
  92. <code>{ min: new THREE.Vector3(), max: new THREE.Vector3() }</code>
  93. </div>
  94. <h3>.[page:Object boundingSphere]</h3>
  95. <div>
  96. Bounding sphere.
  97. <code>{ radius: float }</code>
  98. </div>
  99. <h3>.[page:Boolean hasTangents]</h3>
  100. <div>
  101. True if geometry has tangents. Set in [page:Geometry Geometry.computeTangents].
  102. </div>
  103. <h3>.[page:Boolean dynamic]</h3>
  104. <div>
  105. Set to *true* if attribute buffers will need to change in runtime (using "dirty" flags).<br/>
  106. Unless set to true internal typed arrays corresponding to buffers will be deleted once sent to GPU.<br/>
  107. Defaults to true.
  108. </div>
  109. <h3>.[page:Boolean verticesNeedUpdate]</h3>
  110. <div>
  111. Set to *true* if the vertices array has been updated.
  112. </div>
  113. <h3>.[page:Boolean elementsNeedUpdate]</h3>
  114. <div>
  115. Set to *true* if the faces array has been updated.
  116. </div>
  117. <h3>.[page:Boolean uvsNeedUpdate]</h3>
  118. <div>
  119. Set to *true* if the uvs array has been updated.
  120. </div>
  121. <h3>.[page:Boolean normalsNeedUpdate]</h3>
  122. <div>
  123. Set to *true* if the normals array has been updated.
  124. </div>
  125. <h3>.[page:Boolean tangentsNeedUpdate]</h3>
  126. <div>
  127. Set to *true* if the tangents in the faces has been updated.
  128. </div>
  129. <h3>.[page:Boolean colorsNeedUpdate]</h3>
  130. <div>
  131. Set to *true* if the colors array has been updated.
  132. </div>
  133. <h3>.[page:Boolean lineDistancesNeedUpdate]</h3>
  134. <div>
  135. Set to *true* if the linedistances array has been updated.
  136. </div>
  137. <h3>.[page:array lineDistances]</h3>
  138. <div>
  139. An array containing distances between vertices for Line geometries.
  140. This is required for LinePieces/LineDashedMaterial to render correctly.
  141. Line distances can also be generated with computeLineDistances.
  142. </div>
  143. <h2>Methods</h2>
  144. <h3>[page:EventDispatcher EventDispatcher] methods are available on this class.</h3>
  145. <h3>.applyMatrix( [page:Matrix4 matrix] )</h3>
  146. <div>
  147. Bakes matrix transform directly into vertex coordinates.
  148. </div>
  149. <h3>.computeFaceNormals()</h3>
  150. <div>
  151. Computes face normals.
  152. </div>
  153. <h3>.computeVertexNormals()</h3>
  154. <div>
  155. Computes vertex normals by averaging face normals.<br />
  156. Face normals must be existing / computed beforehand.
  157. </div>
  158. <h3>.computeMorphNormals()</h3>
  159. <div>
  160. Computes morph normals.
  161. </div>
  162. <h3>.computeTangents()</h3>
  163. <div>
  164. Computes vertex tangents.<br />
  165. Based on [link:http://www.terathon.com/code/tangent.html]<br />
  166. Geometry must have vertex [page:UV UVs] (layer 0 will be used).
  167. </div>
  168. <h3>.computeBoundingBox()</h3>
  169. <div>
  170. Computes bounding box of the geometry, updating [page:Geometry Geometry.boundingBox] attribute.
  171. </div>
  172. <h3>.computeBoundingSphere()</h3>
  173. <div>
  174. Computes bounding sphere of the geometry, updating [page:Geometry Geometry.boundingSphere] attribute.
  175. </div>
  176. <div>Neither bounding boxes or bounding spheres are computed by default. They need to be explicitly computed, otherwise they are *null*.</div>
  177. <h3>.merge( [page:Geometry geometry], [page:Matrix4 matrix], [page:Integer materialIndexOffset] )</h3>
  178. <div>Merge two geometries or geometry and geometry from object (using object's transform)</div>
  179. <h3>.mergeVertices()</h3>
  180. <div>
  181. Checks for duplicate vertices using hashmap.<br />
  182. Duplicated vertices are removed and faces' vertices are updated.
  183. </div>
  184. <h3>.clone()</h3>
  185. <div>
  186. Creates a new clone of the Geometry.
  187. </div>
  188. <h3>.dispose()</h3>
  189. <div>
  190. Removes The object from memory. <br />
  191. Don't forget to call this method when you remove a geometry because it can cause memory leaks.
  192. </div>
  193. <h3>.computeLineDistances()</h3>
  194. <div>
  195. Compute distances between vertices for Line geometries.
  196. </div>
  197. <h2>Source</h2>
  198. [link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
  199. </body>
  200. </html>