public List <Vector4> Update(Vector3 viewerPositon)
{
var dist = Vector3.Distance(viewerPositon, bounds.ClosestPoint(viewerPositon));
if (parentChunk != null)
{
var distParent = Vector3.Distance(viewerPositon, parentChunk.GetBounds().ClosestPoint(viewerPositon));
if (distParent > parentChunk.GetScale() * chunkSize)
{
parentChunk.MergeChunk();
return(positionsList);
}
}
if (scale * chunkSize > dist)
{
SubDivide(viewerPositon);
}
else
{
positionsList.Clear();
directionList.Clear();
positionsList.Add(positionToDraw);
directionList.Add(directionX);
}
return(positionsList);
}
public void Update(Vector3 viewerPositon, bool isStillVisible, Vector3 positionA, float newScale)
{
//pokud uživatel změnil nějaká data, tak uzel musí přepočítat svoji novou pozici
if (positionA != position)
{
scale = newScale;
position = positionA;
Vector3 newPosition = CalculePositionOfSphere(positionA);
bounds.center = newPosition;
bounds.size = (new Vector3(1, 1, 1) - newPosition.normalized) * scale;
RecalculSteps();
positionToDraw = new Vector4((position.x), (position.y), (position.z), scale);
}
//test nu frustum culling
if (isStillVisible)
{
isVisible = FrustumCulling.Frustum(camera, bounds.center, scale * 0.5f, bounds);
}
if (!isVisible)
{
return;
}
//Vypočet vzdálenosti pozorovatele s jebližší bodem na bounding boxu
var dist = Vector3.Distance(viewerPositon, bounds.ClosestPoint(viewerPositon));
if (parentChunk != null)
{
var distParent = Vector3.Distance(viewerPositon, parentChunk.GetBounds().ClosestPoint(viewerPositon));
//Zde pokud podmínka plati tak se provede merge---- takzvane se odstrani všichni potomci
if (distParent / 2 > parentChunk.GetScale())
{
parentChunk.MergeChunk();
return;
}
}
//aktualizace uzlu
if (chunkTree != null)
{
int i = 0;
foreach (var item in chunkTree)
{
item.Update(viewerPositon, isVisible, steps[i], scale * 0.5f);
i++;
}
}
//Uzel si vytvoří 4 poduzly
else if (scale * 2 > dist)
{
SubDivide(viewerPositon);
}
// Finalista na vykresleni
else
{
isVisible = FrustumCulling.horizont(camera, bounds.center);
}
return;
}
