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File: ../src/components/spline.js

  1. ///@INFO: UNCOMMON
  2. /**
  3. * Spline allows to define splines in 3D
  4. * @class Spline
  5. * @constructor
  6. * @param {String} object to configure from
  7. */
  8.  
  9. function Spline( o )
  10. {
  11. 	this.enabled = true;
  12. 	this._render_in_viewport = false;
  13. 	this.path = new LS.Path();
  14. 	this._type = LS.Path.LINE;
  15. 	this._must_update = false;
  16.  
  17. 	if(o)
  18. 		this.configure(o);
  19.  
  20. 	this._max_points = 1024;
  21. 	this._range = 0;
  22. }
  23.  
  24. Object.defineProperty( Spline.prototype, 'render_in_viewport', {
  25. 	get: function() { return this._render_in_viewport; },
  26. 	set: function(v) { 
  27. 		if(this._render_in_viewport == v)
  28. 			return;
  29. 		this._render_in_viewport = v;
  30. 		//set events
  31. 		if(!this._root || !this._root.scene)
  32. 			return;
  33. 		if(v)
  34. 			LEvent.bind( this._root.scene, "collectRenderInstances", this.onCollectInstances, this );
  35. 		else
  36. 			LEvent.unbind( this._root.scene, "collectRenderInstances", this.onCollectInstances, this );
  37. 	},
  38. 	enumerable: true
  39. });
  40.  
  41. Object.defineProperty( Spline.prototype, 'type', {
  42. 	get: function() { return this.path.type; },
  43. 	set: function(v) { 
  44. 		this.path.type = v;
  45. 		this._must_update = true;
  46. 	},
  47. 	enumerable: true
  48. });
  49.  
  50.  
  51. Spline["@type"] = { type: "enum", values: { line: LS.Path.LINE, spline: LS.Path.SPLINE, bezier: LS.Path.BEZIER } };
  52.  
  53. Spline.prototype.onAddedToScene = function(scene)
  54. {
  55. 	if(this._render_in_viewport)
  56. 		LEvent.bind( this._root.scene, "collectRenderInstances", this.onCollectInstances, this );
  57. }
  58.  
  59. Spline.prototype.onRemovedFromScene = function(scene)
  60. {
  61. 	if(this._render_in_viewport)
  62. 		LEvent.unbind( this._root.scene, "collectRenderInstances", this.onCollectInstances, this );
  63. }
  64.  
  65. Spline.prototype.onCollectInstances = function(e, instances)
  66. {
  67. 	if(!this.enabled)
  68. 		return;
  69.  
  70. 	if(!this._root)
  71. 		return;
  72.  
  73. 	if(this.path.getSegments() == 0)
  74. 		return;
  75.  
  76. 	if(!this._mesh || this._must_update)
  77. 		this.updateMesh();
  78.  
  79. 	var RI = this._render_instance;
  80. 	if(!RI)
  81. 		this._render_instance = RI = new LS.RenderInstance(this._root, this);
  82.  
  83. 	if(this._root.transform)
  84. 		this._root.transform.getGlobalMatrix( RI.matrix );
  85. 	RI.setMatrix( RI.matrix ); //force normal
  86. 	//mat4.multiplyVec3( RI.center, RI.matrix, vec3.create() );
  87. 	mat4.getTranslation( RI.center, RI.matrix );
  88. 	RI.setMesh( this._mesh, gl.LINE_STRIP );
  89. 	RI.setRange( 0, this._range );
  90. 	RI.flags = RI_DEFAULT_FLAGS;
  91. 	RI.applyNodeFlags();
  92. 	RI.setMaterial( this.material || this._root.getMaterial() );
  93.  
  94. 	instances.push(RI);	
  95. }
  96.  
  97. Spline.prototype.updateMesh = function()
  98. {
  99. 	if(!this._mesh)
  100. 		this._mesh = GL.Mesh.load( { vertices: new Float32Array( this._max_points * 3 ) } );
  101. 	
  102. 	var vertices_buffer = this._mesh.getVertexBuffer("vertices");
  103. 	var vertices_data = vertices_buffer.data;
  104.  
  105. 	var total = 0;
  106.  
  107. 	if(this.path.type == LS.Path.LINE)
  108. 		total = this.path.getSegments() + 1;
  109. 	else
  110. 		total = this.path.getSegments() * 10; //10 points per segment
  111.  
  112. 	if(total > this._max_points)
  113. 		total = this._max_points;
  114.  
  115. 	this.path.samplePointsTyped( total, vertices_data );
  116. 	vertices_buffer.upload( gl.STREAM_TYPE );
  117.  
  118. 	this._range = total;
  119.  
  120. 	this._must_update = false;
  121. }
  122.  
  123. Spline.prototype.addPoint = function( point )
  124. {
  125. 	this.path.addPoint( point );
  126. 	this._must_update = true;
  127. }
  128.  
  129. //not finished yet
  130. //LS.registerComponent( Spline );
  131.