Additional features for segments

src/away3d/entities/SegmentSet.as

@@ -1,4 +1,4 @@
-package away3d.entities
+package away3d.entities
 {
 	import away3d.arcane;
 	import away3d.animators.IAnimator;
@@ -14,6 +14,7 @@
 	import away3d.primitives.LineSegment;
 	import away3d.primitives.data.Segment;
 	import away3d.library.assets.AssetType;
+	import flash.display.BlendMode;
 
 	import flash.display3D.Context3D;
 	import flash.display3D.Context3DVertexBufferFormat;
@@ -53,6 +54,7 @@
 
 			_segments = new Dictionary();
 			material = new SegmentMaterial();
+			material.blendMode = BlendMode.LAYER;
 		}
 
 		/**
@@ -248,7 +250,10 @@
 			var startR:Number = segment._startR, startG:Number = segment._startG, startB:Number = segment._startB;
 			var endR:Number = segment._endR, endG:Number = segment._endG, endB:Number = segment._endB;
 			var index:uint = segment.index;
-			var t:Number = segment.thickness;
+			var st:Number = segment.startThickness;
+			var et:Number = segment.endThickness;
+			var sa:Number = segment.startAlpha;
+			var ea:Number = segment.endAlpha;
 
 			var subSet:SubSet = _subSets[segment.subSetIndex];
 			var vertices:Vector.<Number> = subSet.vertices;
@@ -259,47 +264,47 @@
 			vertices[index++] = endX;
 			vertices[index++] = endY;
 			vertices[index++] = endZ;
-			vertices[index++] = t;
+			vertices[index++] = st;
 			vertices[index++] = startR;
 			vertices[index++] = startG;
 			vertices[index++] = startB;
-			vertices[index++] = 1;
+			vertices[index++] = sa;
 
 			vertices[index++] = endX;
 			vertices[index++] = endY;
 			vertices[index++] = endZ;
 			vertices[index++] = startX;
 			vertices[index++] = startY;
 			vertices[index++] = startZ;
-			vertices[index++] = -t;
+			vertices[index++] = -et;
 			vertices[index++] = endR;
 			vertices[index++] = endG;
 			vertices[index++] = endB;
-			vertices[index++] = 1;
+			vertices[index++] = ea;
 
 			vertices[index++] = startX;
 			vertices[index++] = startY;
 			vertices[index++] = startZ;
 			vertices[index++] = endX;
 			vertices[index++] = endY;
 			vertices[index++] = endZ;
-			vertices[index++] = -t;
+			vertices[index++] = -st;
 			vertices[index++] = startR;
 			vertices[index++] = startG;
 			vertices[index++] = startB;
-			vertices[index++] = 1;
+			vertices[index++] = sa;
 
 			vertices[index++] = endX;
 			vertices[index++] = endY;
 			vertices[index++] = endZ;
 			vertices[index++] = startX;
 			vertices[index++] = startY;
 			vertices[index++] = startZ;
-			vertices[index++] = t;
+			vertices[index++] = et;
 			vertices[index++] = endR;
 			vertices[index++] = endG;
 			vertices[index++] = endB;
-			vertices[index++] = 1;
+			vertices[index++] = ea;
 
 			subSet.vertexBufferDirty = true;
 

src/away3d/materials/SegmentMaterial.as

@@ -2,6 +2,7 @@ package away3d.materials
 {
 	import away3d.arcane;
 	import away3d.materials.passes.SegmentPass;
+	import flash.display.BlendMode;
 
 	use namespace arcane;
 
@@ -26,6 +27,13 @@ package away3d.materials
 			bothSides = true;
 			addPass(_screenPass = new SegmentPass(thickness));
 			_screenPass.material = this;
+			blendMode = BlendMode.NORMAL;
+		}
+
+		override public function set blendMode(value:String):void
+		{
+			super.blendMode = value;
+			_screenPass.setBlendMode(value);
 		}
 	}
 }

src/away3d/primitives/data/Segment.as

@@ -10,7 +10,8 @@ package away3d.primitives.data
 	public class Segment
 	{
 		arcane var _segmentsBase:SegmentSet;
-		arcane var _thickness:Number;
+		arcane var _startThickness:Number;
+		arcane var _endThickness:Number;
 		arcane var _start:Vector3D;
 		arcane var _end:Vector3D;
 		arcane var _startR:Number;
@@ -24,13 +25,16 @@ package away3d.primitives.data
 		private var _subSetIndex:int = -1;
 		private var _startColor:uint;
 		private var _endColor:uint;
+		private var _startAlpha:Number;
+		private var _endAlpha:Number;
 
 		public function Segment(start:Vector3D, end:Vector3D, anchor:Vector3D, colorStart:uint = 0x333333, colorEnd:uint = 0x333333, thickness:Number = 1):void
 		{
 			// TODO: not yet used: for CurveSegment support
 			anchor = null;
 
-			_thickness = thickness*.5;
+			_startThickness = thickness*.5;
+			_endThickness = thickness*.5;
 			// TODO: add support for curve using anchor v1
 			// Prefer removing v1 from this, and make Curve a separate class extending Segment? (- David)
 			_start = start;
@@ -39,20 +43,24 @@ package away3d.primitives.data
 			endColor = colorEnd;
 		}
 
-		public function updateSegment(start:Vector3D, end:Vector3D, anchor:Vector3D, colorStart:uint = 0x333333, colorEnd:uint = 0x333333, thickness:Number = 1):void
+		public function updateSegment(start:Vector3D, end:Vector3D, anchor:Vector3D, colorStart:uint = 0x333333, colorEnd:uint = 0x333333, startThickness:Number = 1, endThickness:Number = NaN, alphaStart:Number = 1, alphaEnd:Number = 1):void
 		{
 			// TODO: not yet used: for CurveSegment support
 			anchor = null;
 			_start = start;
 			_end = end;
 
+			_startAlpha = alphaStart;
+			_endAlpha = alphaEnd;
+
 			if (_startColor != colorStart)
 				startColor = colorStart;
 
 			if (_endColor != colorEnd)
 				endColor = colorEnd;
 
-			_thickness = thickness*.5;
+			_startThickness = startThickness*.5;
+			_endThickness = (isNaN(endThickness) ? startThickness : endThickness) *.5;
 			update();
 		}
 
@@ -84,17 +92,37 @@ package away3d.primitives.data
 			update();
 		}
 
-		/**
-		 * Defines the ending vertex.
-		 */
 		public function get thickness():Number
 		{
-			return _thickness*2;
+			return _startThickness*2;
 		}
 
 		public function set thickness(value:Number):void
 		{
-			_thickness = value*.5;
+			_startThickness = value*.5;
+			_endThickness = value*.5;
+			update();
+		}
+
+		public function get startThickness():Number
+		{
+			return _startThickness*2;
+		}
+
+		public function set startThickness(value:Number):void
+		{
+			_startThickness = value*.5;
+			update();
+		}
+
+		public function get endThickness():Number
+		{
+			return _endThickness*2;
+		}
+
+		public function set endThickness(value:Number):void
+		{
+			_endThickness = value*.5;
 			update();
 		}
 
@@ -136,6 +164,30 @@ package away3d.primitives.data
 			update();
 		}
 
+		public function get startAlpha():Number
+		{
+			return _startAlpha;
+		}
+
+		public function set startAlpha(value:Number):void
+		{
+			_startAlpha = value;
+
+			update();
+		}
+
+		public function get endAlpha():Number
+		{
+			return _endAlpha;
+		}
+
+		public function set endAlpha(value:Number):void
+		{
+			_endAlpha = value;
+
+			update();
+		}
+
 		public function dispose():void
 		{
 			_start = null;