/// <summary>
/// Parse the definition of one index in the database
/// </summary>
/// <param name="cur2">the current node</param>
/// <returns></returns>
protected TIndex ParseIndex(XmlNode cur2)
{
TIndex element;
XmlNode cur;
TIndexField myIndexField;
int groupId;
element = new TIndex();
element.strName = GetAttribute(cur2, "name");
element.strDescr = GetAttribute(cur2, "descr");
element.strArea = GetAttribute(cur2, "area");
element.bPrimary = (GetAttribute(cur2, "primary") == "yes");
element.bUnique = (GetAttribute(cur2, "unique") == "yes");
element.bImplicit = (GetAttribute(cur2, "implicit") == "yes");
cur = cur2.FirstChild;
while (cur != null)
{
groupId = -1;
myIndexField = (TIndexField)Parse(cur, ref groupId, "indexfield");
if (myIndexField != null)
{
element.grpIndexField.Add(myIndexField);
}
cur = GetNextEntity(cur);
}
return(element);
}
public Key(TSource source, TIndex index)
{
Source = source;
_index = index;
unchecked
{
_hashCode = (Source.GetHashCode() * 397) ^
_index.GetHashCode();
}
}
private static (VertexPosition[] vertices, TIndex[] indices) GenerateBufferData()
{
// convention is X -> y ^ and Z to sky
// So first verts are at bottom left.
// front-face is CW
var vertices = new VertexPosition[GridResolution * GridResolution];
var i = 0;
for (var y = 0; y < GridResolution; y++)
{
for (var x = 0; x < GridResolution; x++)
{
vertices[i] = new VertexPosition(new Vector3(x / (float)(GridResolution - 1), y / (float)(GridResolution - 1), 0));
i++;
}
}
Trace.Assert(i == vertices.Length);
var ntriangles = (GridResolution - 1) * (GridResolution - 1) * 2;
var indices = new TIndex[ntriangles * 3];
i = 0;
for (var y = 0; y < GridResolution - 1; y++)
{
for (var x = 0; x < GridResolution - 1; x++)
{
var bl = checked ((TIndex)(GridResolution * y + x));
var br = checked ((TIndex)(GridResolution * y + (x + 1)));
var tl = checked ((TIndex)(GridResolution * (y + 1) + x));
var tr = checked ((TIndex)(GridResolution * (y + 1) + (x + 1)));
indices[i++] = tl;
indices[i++] = tr;
indices[i++] = bl;
indices[i++] = bl;
indices[i++] = tr;
indices[i++] = br;
}
}
Trace.Assert(i == indices.Length);
return(vertices, indices);
}
public DataNotFoundException(TIndex index)
: base("Data not found at " + index.ToString())
{
}
public TaskData(TIndex index)
{
Index = index;
_completionSource = new NoThrowTaskCompletionSource <TData>();
}
/// <summary>
/// Parse the definition of one index in the database
/// </summary>
/// <param name="cur2">the current node</param>
/// <returns></returns>
protected TIndex ParseIndex(XmlNode cur2)
{
TIndex element;
XmlNode cur;
TIndexField myIndexField;
int groupId;
element = new TIndex();
element.strName = GetAttribute(cur2, "name");
element.strDescr = GetAttribute(cur2, "descr");
element.strArea = GetAttribute(cur2, "area");
element.bPrimary = (GetAttribute(cur2, "primary") == "yes");
element.bUnique = (GetAttribute(cur2, "unique") == "yes");
element.bImplicit = (GetAttribute(cur2, "implicit") == "yes");
cur = cur2.FirstChild;
while (cur != null)
{
groupId = -1;
myIndexField = (TIndexField)Parse(cur, ref groupId, "indexfield");
if (myIndexField != null)
{
element.grpIndexField.Add(myIndexField);
}
cur = GetNextEntity(cur);
}
return element;
}
