private void initializeDrops()
{
_drops = new Drop2[_populationSize];
for (int i = 0; i < _populationSize; i++)
{
_drops[i] = new Drop2();
}
}
private void ErodePath(Drop2 drop)
{
for (int i = 0; i < drop.path.Count - 1; i++)
{
NodeXY a = _nodes[drop.path[i]];
NodeXY b = _nodes[drop.path[i + 1]];
double erosion = CalculateErosion(a, b) / drop.pathLength;
a.Height -= erosion;
_erosionProduced += erosion;
}
}
private void moveDrop(Drop2 drop, double climbingProbability)
{
drop.evaporated = false;
drop.canClimb = false;
drop.path = new List <int>();
drop.pathLength = 0.0;
drop.sediment = 0.0;
drop.currentNode = _nodes[_source];
drop.path.Add(_source);
double rC = _rng.NextDouble();
if (rC <= climbingProbability)
{
drop.canClimb = true;
}
while (drop.currentNode.Index != _target && !drop.evaporated)
{
int nextNodeIdx = PickNextNode(drop.currentNode);
NodeXY nextNode = drop.currentNode.Neighbours[nextNodeIdx];
if (drop.path.Count >= _nodes.Count)
{
drop.evaporated = true;
break;
}
drop.pathLength += drop.currentNode.NeighbourDistance[nextNodeIdx];
drop.currentNode = nextNode;
drop.path.Add(nextNode.Index);
}
if (drop.evaporated)
{
}
else
{
ErodePath(drop);
if (drop.pathLength < drop.bestPathLength)
{
drop.bestPathLength = drop.pathLength;
drop.bestPath = new List <int>(drop.path);
}
if (drop.pathLength < _bestPathLength)
{
_bestPathLength = drop.pathLength;
_bestPath = new List <int>(drop.path);
}
}
}
