public HeightmapMarginWithInfo UpdateWherePossible(HeightmapMarginWithInfo newMargin)
{
//Preconditions.Assert( _heightmapMargin.Length == newMargin.HeightmapLength, todo change not to length but to lods
// string.Format("Current margin length is {0} != new margin length == {1} ", _heightmapMargin.Length, newMargin.HeightmapLength));
Preconditions.Assert((newMargin.Position.IsHorizontal && Position.IsHorizontal) || (newMargin.Position.IsVertical && Position.IsVertical),
string.Format("Current and new margins are one vertical one horizontal: Old {0} new {1}", _heightmapMargin, newMargin));
bool haveCommonElements = Position.HaveCommonElementWith(newMargin.Position);
Preconditions.Assert(haveCommonElements, string.Format("Current {0} and new {1} margin dont have common elements", HeightmapMargin, newMargin));
MarginPosition commonSegment = Position.GetCommonSegment(newMargin.Position);
var ourStartPercent = Position.InvLerp(commonSegment.StartPoint);
var ourStartOffset = (int)Math.Round((double)HeightmapWorkingLength * ourStartPercent);
var ourEndPercent = Position.InvLerp(commonSegment.EndPoint);
var ourEndOffset = (int)Math.Round((double)HeightmapWorkingLength * ourEndPercent);
var theirStartPercent = newMargin.Position.InvLerp(commonSegment.StartPoint);
var theirStartOffset = (int)Math.Round((double)newMargin.HeightmapWorkingLength * theirStartPercent);
var theirEndPercent = newMargin.Position.InvLerp(commonSegment.EndPoint);
var theirEndOffset = (int)Math.Round((double)newMargin.HeightmapWorkingLength * theirEndPercent);
return(new HeightmapMarginWithInfo(SetMarginSubElement(ourStartOffset, ourEndOffset, theirStartOffset, theirEndOffset, newMargin), Position, LodFactor));
}
private HeightmapMargin SetMarginSubElement(int ourStartOffset, int ourEndOffset, int theirStartOffset, int theirEndOffset, HeightmapMarginWithInfo newMargin)
{
Preconditions.Assert(
(ourEndOffset - ourStartOffset) == (theirEndOffset - theirStartOffset),
String.Format("Cant set subelement. Offset lengths are not equal. Our start {0} end {1} their start {2} end {3} ",
ourStartOffset, ourEndOffset, theirStartOffset, theirEndOffset));
var length = ourEndOffset - ourStartOffset;
var newValues = new float[_heightmapMargin.Length];
Array.Copy(_heightmapMargin.MarginValues, newValues, newValues.Length);
for (int i = 0; i < length; i++)
{
newValues[ourStartOffset + i] = newMargin.HeightmapMargin.MarginValues[theirStartOffset + i];
}
return(new HeightmapMargin(newValues));
}
public void SetBottomMargin(HeightmapMarginWithInfo margin)
{
Preconditions.Assert(margin.Position.IsHorizontal, string.Format("Bottom margin {0} cant be set as is not horizontal", margin));
HeightmapArray.SetBottomMargin(margin.HeightmapMargin);
}
public void SetLeftMargin(HeightmapMarginWithInfo margin)
{
Preconditions.Assert(margin.Position.IsVertical, string.Format("Left margin {0} cant be set as is not vertical", margin));
HeightmapArray.SetLeftMargin(margin.HeightmapMargin);
}