//TODO split old settings add new settings for just this.
public static void ApplyRandomLandFeatures(TerraMap _tMap, Action _onComplete, Progress.OnUpdate _onUpdate)
{
var prog = new Progress();
prog.SetOnUpdate(_onUpdate);
var tMesh = _tMap.TMesh;
var settings = _tMap.settings;
//Land morphing
prog.Update(0, "Conifying", true);
TerraMesh.Modify.Conify(tMesh, settings.ConifyStrength, _onUpdate);
prog.Update(1, "Conifying", true);
prog.Update(0, "Applying Global Slope", true);
var gSlpDir = settings.GlobalSlopeDir == Vector2.zero
? new Vector2((float)(settings.m_Rnd.NextDouble() - 0.5f),
(float)(settings.m_Rnd.NextDouble() - 0.5f))
: settings.GlobalSlopeDir;
TerraMesh.Modify.SlopeGlobal(tMesh, gSlpDir, settings.GlobalSlopeMag);
prog.Update(1, "Applying Global Slope", true);
prog.Update(0, "Adding Hills / Blobs", true);
var meshBnd = tMesh.bounds;
var rectXY = new Rect(meshBnd.min.x, meshBnd.min.y, meshBnd.size.x, meshBnd.size.y);
for (var hIdx = 0; hIdx < settings.HillRndCnt.Count; ++hIdx)
{
prog.Update((float)hIdx / settings.HillRndCnt.Count, "Adding hills / blobs");
for (var hCnt = 0; hCnt < settings.HillRndCnt[hIdx]; ++hCnt)
{
TerraMesh.Modify.Blob(tMesh, settings.HillRndStr[hIdx], settings.HillRndRad[hIdx],
Settings.RndVec2(rectXY, settings.m_Rnd));
}
}
prog.Update(1, "Adding Hills / Blobs", true);
//Calculate water flux
prog.Update(0, "Making Rivers", true);
ApplyWaterFlux(_tMap, _onUpdate);
prog.Update(1, "Making Rivers", true);
//Erosion
prog.Update(0, "Eroding", true);
TerraMesh.Modify.Erode(tMesh, settings.MaxErosionRate,
_tMap.WaterFlux.Select(_node => _node.Flux).ToArray());
prog.Update(1, "Eroding", true);
//Calculate Water Level
prog.Update(0, "Setting Sea Level", true);
SetSeaLevelByLandRatio(_tMap, settings.LandWaterRatio);
prog.Update(1, "Setting Sea Level", true);
PlaceRivers(_tMap, settings.m_WaterwayThresh);
}
public static void PlaceRivers(TerraMap _tMap, float _fluxThresh)
{
var wwList = new List <WaterNode>(_tMap.WaterFlux);
//Prune ocean sites
var sitePositions = _tMap.TMesh.GetAllSitePositions(); //TODO
wwList.RemoveAll(_wn => sitePositions[_wn.SiteIdx].z < _tMap.WaterSurfaceZ);
wwList.Sort((_a, _b) => _b.Flux.CompareTo(_a.Flux));
//Calc flux cutoff
var fluxCutoff = _fluxThresh * _tMap.WaterFluxSpan + _tMap.WaterFluxMin;
var riverSites = new List <int>();
for (var idx = 0; idx < wwList.Count; ++idx)
{
var wn = wwList[idx];
if (wn.Flux < fluxCutoff)
{
break;
}
riverSites.Add(wn.SiteIdx);
}
_tMap.RiverSites = riverSites.ToArray();
}
///Calculate sea level based on land water ratio
public static void SetSeaLevelByLandRatio2(TerraMap _tMap, float _landToWaterRatio)
{
var tMesh = _tMap.TMesh;
var landPctTgt = _landToWaterRatio;
if (landPctTgt <= 0 || landPctTgt >= 1)
{
landPctTgt = 0.5f;
}
var zMin = tMesh.bounds.min.z;
var zMax = tMesh.bounds.max.z;
var vertices = _tMap.TMesh.Vertices;
//Start Find
var zCheck = zMin + (zMax - zMin) / 2f;
var zRailMax = zMax;
var zRailMin = zMin;
while (true) //TODO this is brute force
{
var aboveCnt = 0;
var belowCnt = 0;
foreach (var site in vertices)
{
if (site.z > zCheck)
{
aboveCnt++;
}
else
{
belowCnt++;
}
}
var pctLandCheck = aboveCnt / (float)(aboveCnt + belowCnt);
var errorPct = 0.05;
if (pctLandCheck > landPctTgt + errorPct)
{
zRailMin = zCheck;
zCheck += (zRailMax - zCheck) / 2f;
continue;
}
if (pctLandCheck < landPctTgt - errorPct)
{
zRailMax = zCheck;
zCheck -= (zCheck - zRailMin) / 2f;
continue;
}
break;
}
_tMap.WaterSurfaceZ = zCheck;
}
public static void SetSeaLevelByLandRatio(TerraMap _tMap, float _landToWaterRatio)
{
var tMesh = _tMap.TMesh;
var sortedVertices = tMesh.Vertices.ToList();
sortedVertices.Sort((_a, _b) => _a.z.CompareTo(_b.z));
var vIdx = (int)(_landToWaterRatio * sortedVertices.Count);
_tMap.WaterSurfaceZ = sortedVertices[vIdx].z;
}
public BiomeStuff(TerraMap _host)
{
Host = _host;
//Set up Biomes
SetupBiomes();
//TODO Config Biomes on map using units of distance
var sitePos = Host.TMesh.GetAllSitePositions();
SiteBiomeMoistZone = new int[sitePos.Length];
//SiteBiomeElevZone = new int[sitePos.Length];
//SiteBiomes = new Biome[sitePos.Length];
for (var sIdx = 0; sIdx < SiteBiomeMoistZone.Length; ++sIdx)
{
SiteBiomeMoistZone[sIdx] = 5;
}
}
public TerraTexture(TerraMap _host, Progress.OnUpdate _onUpdate = null)
{
Host = _host;
canvas = new Canvas((int)Math.Ceiling(Host.settings.TextureResolution * Host.settings.Bounds.width),
(int)Math.Ceiling(Host.settings.TextureResolution * Host.settings.Bounds.height));
m_Progress = new Progress("TerraTexture");
var actProg = _onUpdate ?? ((_progPct, _progStr) => { });
m_Progress.SetOnUpdate(actProg);
m_PixSize = new Vector2(Host.TMesh.bounds.size.x / canvas.Width, Host.TMesh.bounds.size.y / canvas.Height);
m_ZeroOffset = Host.TMesh.bounds.min.ToVec2();
Trace.WriteLine("Init Texture W: " + canvas.Width + " H: " + canvas.Height);
//Paint Waterways
//PaintRivers();
}
//TODO - consider wind effect on rain? ie less rain on downward slopes?
public static void ApplyWaterFlux(TerraMap _tMap, Progress.OnUpdate _onUpdate)
{
var pdSurface = TerraMesh.Generator.PlanchonDarboux(_tMap.TMesh, _tMap.settings.MinPDSlope, _onUpdate);
//Calc water flux
var sitePos = _tMap.TMesh.GetAllSitePositions();
_tMap.WaterFlux = new WaterNode[sitePos.Length];
//Init waterflux and heightmap - TODO sort not needed?
var pIdxByHt = new int[sitePos.Length];
for (var pIdx = 0; pIdx < sitePos.Length; ++pIdx)
{
pIdxByHt[pIdx] = pIdx;
_tMap.WaterFlux[pIdx] = new WaterNode
{
Flux = _tMap.settings.RainfallGlobal,
SiteIdx = pIdx
};
}
Array.Sort(pIdxByHt, (_a, _b) => pdSurface[_b].z.CompareTo(pdSurface[_a].z));
var dbgHtArr = new float[pIdxByHt.Length];
for (var idx = 0; idx < pIdxByHt.Length; idx++)
{
dbgHtArr[idx] = pdSurface[pIdxByHt[idx]].z;
}
for (var hIdx = 0; hIdx < sitePos.Length; ++hIdx)
{
var pIdx = pIdxByHt[hIdx];
var w = pdSurface[pIdx];
//Find biggest slope neighbor
var minNIdx = -1;
//var maxNSlp = 0f;
float maxZdiff = 0;
var siteNbrs = _tMap.TMesh.SiteNeighbors;
foreach (var nIdx in siteNbrs[pIdx])
{
if (nIdx == TerraMesh.SiteIdxNull)
{
continue;
}
var n = pdSurface[nIdx];
if (n.z <= w.z)
{
var diff = w.z - n.z;
if (diff > maxZdiff)
{
maxZdiff = diff;
minNIdx = nIdx;
}
/* Use slope - (Not working?)
* var vec = n - w;
* var run = (float) Math.Sqrt(vec.x * vec.x + vec.y * vec.y);
* var rise = w.z - n.z;
* var slp = rise / run;
* if (slp > maxNSlp)
* {
* minNIdx = nIdx;
* maxNSlp = slp;
* }
*/
}
}
if (minNIdx == -1) //TODO DEBUG should never happen?
{
continue;
}
if (minNIdx == pIdx) //TODO DEBUG
{
continue;
}
//Add this nodes flux to downhill neighbor
_tMap.WaterFlux[minNIdx].Flux += _tMap.WaterFlux[pIdx].Flux;
//Set waterway direction
_tMap.WaterFlux[pIdx].NodeTo = _tMap.WaterFlux[minNIdx];
//Check min / max
var chkFlx = _tMap.WaterFlux[minNIdx].Flux;
if (chkFlx > _tMap.WaterFluxMax)
{
_tMap.WaterFluxMax = chkFlx;
}
}
}
