<div>You should template on VertexPositionColor, not on VertexPositionColor[].</div>
<div> </div>
<div>The reason for the error message is that you're saying T is VertexPositionColor[]. An array is a reference type, while the template constraint specifies a value type.<br></div>
<div class="gmail_quote">On Tue, Feb 2, 2010 at 7:51 AM, Richard Steventon <span dir="ltr"><<a href="mailto:steventon@gmail.com">steventon@gmail.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Okay, so problem #2.... calling the correct version of the interface<br>(I think this is the problem?), since I am getting a "violates the<br>
constraint of type 'T'" error.<br><br>I set up a XNA VertexBuffer using:<br> l = Array.CreateInstance(VertexPositionColor,6)<br> .....<br> self.vertices = l<br><br>Then:<br> self.VertexBuffer = VertexBuffer(self.graphics.GraphicsDevice, \<br>
len(self.vertices) * VertexPositionColor.SizeInBytes, \<br> BufferUsage.WriteOnly)<br> self.VertexBuffer.SetData[Array[VertexPositionColor]](self.vertices)<br><br>And I get:<br>ValueError: GenericArguments[0],<br>
'Microsoft.Xna.Framework.Graphics.VertexPositionColor[]', on 'Void<br>SetData[T](Int32, T[], Int32, Int32, Int32)' violates the constraint<br>of type 'T'.<br><br>The documentation for the VertexBuffer.SetData method can be found here:<br>
<a href="http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.graphics.vertexbuffer.setdata.aspx" target="_blank">http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.graphics.vertexbuffer.setdata.aspx</a><br>
<br>The methods are:<br> VertexBuffer.SetData (Int32, T[], Int32, Int32, Int32)<br> VertexBuffer.SetData (T[])<br> VertexBuffer.SetData (T[], Int32, Int32)<br><br>This works fine in C# with a List of VertexPositionColor objects, so I<br>
assume that Array in IronPython is the equivalent ? So why does it<br>not work ?<br>_______________________________________________<br>Users mailing list<br><a href="mailto:Users@lists.ironpython.com">Users@lists.ironpython.com</a><br>
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