Axiom.Demos.Line3d.Line3d C# (CSharp) Method

		public Line3d( Vector3 startPoint, Vector3 direction, float length, ColorEx color )
		{
			// normalize the direction vector to ensure all elements fall in [0,1] range.
			direction.Normalize();

			// calculate the actual endpoint
			Vector3 endPoint = startPoint + ( direction * length );

			vertexData = new VertexData();
			renderOperation.vertexData = vertexData;
			renderOperation.vertexData.vertexCount = 2;
			renderOperation.vertexData.vertexStart = 0;
			renderOperation.indexData = null;
			renderOperation.operationType = OperationType.LineList;
			renderOperation.useIndices = false;

			VertexDeclaration decl = vertexData.vertexDeclaration;
			VertexBufferBinding binding = vertexData.vertexBufferBinding;

			// add a position and color element to the declaration
			decl.AddElement( POSITION, 0, VertexElementType.Float3, VertexElementSemantic.Position );
			decl.AddElement( COLOR, 0, VertexElementType.Color, VertexElementSemantic.Diffuse );

			// create a vertex buffer for the position
			HardwareVertexBuffer buffer =
				HardwareBufferManager.Instance.CreateVertexBuffer( decl.Clone( POSITION ), vertexData.vertexCount, BufferUsage.StaticWriteOnly );

			Vector3[] pos = new Vector3[] { startPoint, endPoint };

			// write the data to the position buffer
			buffer.WriteData( 0, buffer.Size, pos, true );

			// bind the position buffer
			binding.SetBinding( POSITION, buffer );

			// create a color buffer
			buffer = HardwareBufferManager.Instance.CreateVertexBuffer( decl.Clone( COLOR ), vertexData.vertexCount, BufferUsage.StaticWriteOnly );

			int colorValue = Root.Instance.RenderSystem.ConvertColor( color );

			int[] colors = new int[] { colorValue, colorValue };

			// write the data to the position buffer
			buffer.WriteData( 0, buffer.Size, colors, true );

			// bind the color buffer
			binding.SetBinding( COLOR, buffer );

			// MATERIAL
			// grab a copy of the BaseWhite material for our use
			Material material = (Material)MaterialManager.Instance.GetByName( "BaseWhite" );
			material = material.Clone( "LineMat" );
			// disable lighting to vertex colors are used
			material.Lighting = false;
			// set culling to none so the triangle is drawn 2 sided
			material.CullingMode = CullingMode.None;

			this.Material = material;

			// set the bounding box of the line
			this.box = new AxisAlignedBox( startPoint, endPoint );
		}