Axiom.Graphics.VertexBufferBinding.GetBuffer C# (CSharp) Метод

		public virtual HardwareVertexBuffer GetBuffer( short index )
		{
			Debug.Assert( bindingMap.ContainsKey( index ), "No buffer is bound to index " + index );

			HardwareVertexBuffer buf = bindingMap[ index ];

			return buf;
		}

        /// <summary>
        ///		Utility method, extract info from the given VertexData
        /// </summary>
        public void ExtractFrom(VertexData sourceData)
        {
            // Release old buffer copies first
            HardwareBufferManager mgr = HardwareBufferManager.Instance;

            if (destPositionBuffer != null)
            {
                mgr.ReleaseVertexBufferCopy(destPositionBuffer);
                Debug.Assert(destPositionBuffer == null);
            }
            if (destNormalBuffer != null)
            {
                mgr.ReleaseVertexBufferCopy(destNormalBuffer);
                Debug.Assert(destNormalBuffer == null);
            }

            VertexDeclaration   decl       = sourceData.vertexDeclaration;
            VertexBufferBinding bind       = sourceData.vertexBufferBinding;
            VertexElement       posElem    = decl.FindElementBySemantic(VertexElementSemantic.Position);
            VertexElement       normElem   = decl.FindElementBySemantic(VertexElementSemantic.Normal);
            VertexElement       tanElem    = decl.FindElementBySemantic(VertexElementSemantic.Tangent);
            VertexElement       binormElem = decl.FindElementBySemantic(VertexElementSemantic.Binormal);

            Debug.Assert(posElem != null, "Positions are required");

            posBindIndex      = posElem.Source;
            srcPositionBuffer = bind.GetBuffer(posBindIndex);

            if (normElem == null)
            {
                posNormalShareBuffer = false;
                srcNormalBuffer      = null;
            }
            else
            {
                normBindIndex = normElem.Source;
                if (normBindIndex == posBindIndex)
                {
                    posNormalShareBuffer = true;
                    srcNormalBuffer      = null;
                }
                else
                {
                    posNormalShareBuffer = false;
                    srcNormalBuffer      = bind.GetBuffer(normBindIndex);
                }
            }
            if (tanElem == null)
            {
                srcTangentBuffer = null;
            }
            else
            {
                tanBindIndex     = tanElem.Source;
                srcTangentBuffer = bind.GetBuffer(tanBindIndex);
            }

            if (binormElem == null)
            {
                srcBinormalBuffer = null;
            }
            else
            {
                binormBindIndex   = binormElem.Source;
                srcBinormalBuffer = bind.GetBuffer(binormBindIndex);
            }
        }