/// <summary>
/// Create a sandwich substrate. A sandwich has an input layer connected
/// directly to an output layer, both are square.
/// </summary>
/// <param name="inputEdgeSize">The input edge size.</param>
/// <param name="outputEdgeSize">The output edge size.</param>
/// <returns>The substrate.</returns>
public static Substrate factorSandwichSubstrate(int inputEdgeSize,
int outputEdgeSize)
{
Substrate result = new Substrate(3);
double inputTick = 2.0 / inputEdgeSize;
double outputTick = 2.0 / inputEdgeSize;
double inputOrig = -1.0 + (inputTick / 2.0);
double outputOrig = -1.0 + (inputTick / 2.0);
// create the input layer
for (int row = 0; row < inputEdgeSize; row++)
{
for (int col = 0; col < inputEdgeSize; col++)
{
SubstrateNode inputNode = result.CreateInputNode();
inputNode.Location[0] = -1;
inputNode.Location[1] = inputOrig + (row * inputTick);
inputNode.Location[2] = inputOrig + (col * inputTick);
}
}
// create the output layer (and connect to input layer)
for (int orow = 0; orow < outputEdgeSize; orow++)
{
for (int ocol = 0; ocol < outputEdgeSize; ocol++)
{
SubstrateNode outputNode = result.CreateOutputNode();
outputNode.Location[0] = 1;
outputNode.Location[1] = outputOrig + (orow * outputTick);
outputNode.Location[2] = outputOrig + (ocol * outputTick);
// link this output node to every input node
foreach (SubstrateNode inputNode in result.InputNodes)
{
result.CreateLink(inputNode, outputNode);
}
}
}
return(result);
}