|
public DistanceToMaterial ( |
||
| cord | ||
| vec | ||
| matidx | byte | |
| invert | bool | |
| return | double | |
public void makeroots(ref IMapHandler map, List <Vector3i> rootbases)
{
foreach (Vector3i coord in foliage_cords)
{
// First, set the threshhold for randomly selecting this
// coordinate for root creation.
double dist = Math.Sqrt(Math.Pow(coord[0] - Pos[0], 2) +
Math.Pow(coord[2] - Pos[2], 2));
double ydist = coord[1] - Pos[1];
double value = (branchdensity * 220 * Height) / Math.Pow((ydist + dist), 3d);
// Randomly skip roots, based on the above threshold
if (value < rand.NextDouble())
{
continue;
}
// initialize the internal variables from a selection of
// starting locations.
int ci = rand.Next(0, rootbases.Count - 1);
Vector3i rootbase = rootbases[ci];
long rootx = rootbase[0];
long rootz = rootbase[1];
double rootbaseradius = rootbase[2];
// Offset the root origin location by a random amount
// (radialy) from the starting location.
double rndr = (Math.Sqrt(rand.NextDouble()) * rootbaseradius * .618);
double rndang = rand.NextDouble() * 2 * Math.PI;
int rndx = (int)(rndr * Math.Sin(rndang) + 0.5);
int rndz = (int)(rndr * Math.Cos(rndang) + 0.5);
int rndy = (int)(rand.NextDouble() * rootbaseradius * 0.5);
Vector3i startcoord = new Vector3i(rootx + rndx, Pos[1] + rndy, rootz + rndz);
// offset is the distance from the root base to the root tip.
Vector3i offset = startcoord - coord;
// If this is a mangrove tree, make the roots longer.
if (SHAPE == "mangrove")
{
offset = (offset * 1.618) - 1.5;
}
Vector3i endcoord = startcoord + offset;
double rootstartsize = (rootbaseradius * 0.618 * Math.Abs(offset[1]) / (Height * 0.618));
if (rootstartsize < 1.0)
{
rootstartsize = 1.0;
}
double endsize = 1.0;
// If ROOTS is set to "tostone" or "hanging" we need to check
// along the distance for collision with existing materials.
if (ROOTS == "tostone" || ROOTS == "hanging")
{
double offlength = Math.Sqrt(
Math.Pow(offset[0], 2) +
Math.Pow(offset[1], 2) +
Math.Pow(offset[2], 2));
if (offlength < 1)
{
continue;
}
double rootmid = endsize;
// vec is a unit vector along the direction of the root.
Vector3i vec = offset / offlength;
byte searchindex;
if (ROOTS == "tostone")
{
searchindex = 1;
}
else // Hanging
{
searchindex = 0;
}
// startdist is how many steps to travel before starting to
// search for the material. It is used to ensure that large
// roots will go some distance before changing directions
// or stopping.
double startdist = (int)(rand.NextDouble() * 6 * Math.Sqrt(rootstartsize) + 2.8);
// searchstart is the coordinate where the search should begin
Vector3i searchstart = (startcoord + startdist) * vec;
// dist stores how far the search went (including searchstart)
// before encountering the expected marterial.
dist = startdist + map.DistanceToMaterial(searchstart, vec, searchindex);
// If the distance to the materila is less than the length
// of the root, change the end point of the root to where
// the search found the material.
if (dist < offlength)
{
// rootmid is the size of the crossection at endcoord.
rootmid += (rootstartsize - endsize) * (1 - dist / offlength);
}
// endcoord is the midpoint for hanging roots,
// and the endpoint for roots stopped by stone.
endcoord = startcoord + (vec * dist);
if (ROOTS == "hanging")
{
// remaining_dist is how far the root had left
// to go when it was stopped.
double remaining_dist = offlength - dist;
// Initialize bottomcord to the stopping point of
// the root, and then hang straight down
// a distance of remaining_dist.
Vector3i bottomcord = endcoord;
bottomcord.Y += -(long)remaining_dist;
// Make the hanging part of the hanging root.
taperedlimb(ref map, endcoord, bottomcord, (int)rootmid, (int)endsize);
}
// make the beginning part of hanging or "tostone" roots
taperedlimb(ref map, startcoord, endcoord, (int)rootstartsize, (int)rootmid);
// If you aren't searching for stone or air, just make the root.
}
else
{
taperedlimb(ref map, startcoord, endcoord, (int)rootstartsize, (int)endsize);
}
}
}
public void makeroots(ref IMapHandler map, List<Vector3i> rootbases)
{
foreach(Vector3i coord in foliage_cords)
{
// First, set the threshhold for randomly selecting this
// coordinate for root creation.
double dist = Math.Sqrt( Math.Pow(coord[0]-Pos[0],2) +
Math.Pow(coord[2]-Pos[2],2));
double ydist = coord[1]-Pos[1];
double value = (branchdensity * 220 * Height)/Math.Pow((ydist + dist), 3d);
// Randomly skip roots, based on the above threshold
if(value < rand.NextDouble())
continue;
// initialize the internal variables from a selection of
// starting locations.
int ci = rand.Next(0, rootbases.Count-1);
Vector3i rootbase = rootbases[ci];
long rootx = rootbase[0];
long rootz = rootbase[1];
double rootbaseradius = rootbase[2];
// Offset the root origin location by a random amount
// (radialy) from the starting location.
double rndr = (Math.Sqrt(rand.NextDouble())*rootbaseradius*.618);
double rndang = rand.NextDouble()*2*Math.PI;
int rndx = (int)(rndr*Math.Sin(rndang) + 0.5);
int rndz = (int)(rndr*Math.Cos(rndang) + 0.5);
int rndy = (int)(rand.NextDouble()*rootbaseradius*0.5);
Vector3i startcoord = new Vector3i(rootx+rndx,Pos[1]+rndy,rootz+rndz);
// offset is the distance from the root base to the root tip.
Vector3i offset = startcoord-coord;
// If this is a mangrove tree, make the roots longer.
if(SHAPE == "mangrove")
{
offset = (offset * 1.618) - 1.5;
}
Vector3i endcoord = startcoord+offset;
double rootstartsize = (rootbaseradius*0.618* Math.Abs(offset[1])/(Height*0.618));
if(rootstartsize < 1.0)
rootstartsize = 1.0;
double endsize = 1.0;
// If ROOTS is set to "tostone" or "hanging" we need to check
// along the distance for collision with existing materials.
if(ROOTS == "tostone" || ROOTS == "hanging")
{
double offlength = Math.Sqrt(
Math.Pow(offset[0],2) +
Math.Pow(offset[1],2) +
Math.Pow(offset[2],2));
if(offlength < 1)
continue;
double rootmid = endsize;
// vec is a unit vector along the direction of the root.
Vector3i vec = offset/offlength;
byte searchindex;
if(ROOTS == "tostone")
searchindex = 1;
else // Hanging
searchindex = 0;
// startdist is how many steps to travel before starting to
// search for the material. It is used to ensure that large
// roots will go some distance before changing directions
// or stopping.
double startdist = (int)(rand.NextDouble()*6*Math.Sqrt(rootstartsize) + 2.8);
// searchstart is the coordinate where the search should begin
Vector3i searchstart = (startcoord + startdist) * vec;
// dist stores how far the search went (including searchstart)
// before encountering the expected marterial.
dist = startdist + map.DistanceToMaterial(searchstart,vec,searchindex);
// If the distance to the materila is less than the length
// of the root, change the end point of the root to where
// the search found the material.
if(dist < offlength)
// rootmid is the size of the crossection at endcoord.
rootmid += (rootstartsize - endsize)*(1-dist/offlength);
// endcoord is the midpoint for hanging roots,
// and the endpoint for roots stopped by stone.
endcoord = startcoord+(vec*dist);
if(ROOTS == "hanging")
{
// remaining_dist is how far the root had left
// to go when it was stopped.
double remaining_dist = offlength - dist;
// Initialize bottomcord to the stopping point of
// the root, and then hang straight down
// a distance of remaining_dist.
Vector3i bottomcord = endcoord;
bottomcord.Y += -(long)remaining_dist;
// Make the hanging part of the hanging root.
taperedlimb(ref map, endcoord, bottomcord, (int)rootmid, (int)endsize);
}
// make the beginning part of hanging or "tostone" roots
taperedlimb(ref map, startcoord, endcoord, (int)rootstartsize, (int)rootmid);
// If you aren't searching for stone or air, just make the root.
}
else
{
taperedlimb(ref map, startcoord, endcoord, (int)rootstartsize, (int)endsize);
}
}
}
