public Mesh CreateDiamondGrid(int numColumns, int numRows)
{
CustomMesh ret = new CustomMesh();
List<Vector3> vBuf = new List<Vector3>();
List<int> iBuf = new List<int>();
DiamondSquare sq = new DiamondSquare();
for (int r = -numColumns; r < numColumns; r+=2)
{
for (int c = -numColumns; c < numColumns; c+=2)
{
sq.AppendTranslatedSquare(vBuf, iBuf, new Vector3(c, 0, r), DiamondSquare.SquareType.Normal);
}
}
ret.SetVertexData<VertexTypes.Position>(vBuf, iBuf);
return ret;
}
void Recreate(int numColumns,int numRows)
{
List<Vector3> vBuf = new List<Vector3>();
List<int> iBuf = new List<int>();
List<Vector3> tempBuf = new List<Vector3>();
List<int> tempiBuf = new List<int>();
DiamondSquare sq = new DiamondSquare();
for (int row = 0; row < numRows; row += 2)
{
for (int column = 0; column <= numColumns + row; column += 2)
{
DiamondSquare.SquareType st = DiamondSquare.SquareType.Normal;
if (row == numRows-2 && column == numColumns + row)
st = DiamondSquare.SquareType.TopRight;
else if (row == numRows-2)
st = DiamondSquare.SquareType.TopRow;
else if (column == numColumns + row)
st = DiamondSquare.SquareType.Right;
sq.AppendTranslatedSquare(tempBuf, tempiBuf, new Vector3(column, 0, row + numColumns), st);
}
}
List<Vector3> rev;
List<int> revi;
MathExtensions.ReflectVerticesThroughXAxis(tempBuf, tempiBuf, out rev, out revi);
MathExtensions.AppendVertices(tempBuf, tempiBuf, rev, revi);
MathExtensions.AppendVertices(vBuf, iBuf, tempBuf, tempiBuf);
Matrix m = Matrix.RotationY((float)(Math.PI / 2));
MathExtensions.TransformVertices(tempBuf, out rev, m);
MathExtensions.AppendVertices(vBuf, iBuf, rev, tempiBuf);
m = Matrix.RotationY((float)(Math.PI));
MathExtensions.TransformVertices(tempBuf, out rev, m);
MathExtensions.AppendVertices(vBuf, iBuf, rev, tempiBuf);
m = Matrix.RotationY((float)(3 * Math.PI / 2));
MathExtensions.TransformVertices(tempBuf, out rev, m);
MathExtensions.AppendVertices(vBuf, iBuf, rev, tempiBuf);
this.SetVertexPositionData<VertexTypes.Position>(vBuf.ToArray(), iBuf.ToArray());
}