public ConstantVolumePressureGoal(Mesh mesh, float volumePressureConstant, float weight = 1f)
{
try
{
currentVolumeInversed = 1f / (float)mesh.Volume;
}
catch (Exception)
{
throw new Exception("The input mesh is not valid (It must be a closed mesh so that its volume is computable)");
}
Mesh = mesh;
faces = Mesh.VertexIndicesByTri();
Weight = weight;
VolumePressureConstant = volumePressureConstant;
List <Point> vertices = mesh.Vertices();
StartingPositions = new Triple[mesh.VertexCount];
for (int i = 0; i < mesh.VertexCount; i++)
{
StartingPositions[i] = vertices[i].ToTriple();
}
Moves = new Triple[StartingPositions.Length];
Weights = new float[StartingPositions.Length];
}
public Octree(MeshToolkit mesh, bool cubic = true)
{
this._mesh = mesh;
this._cubic = cubic;
//this.triangles = _mesh.Triangles();
this.vertices = _mesh.Vertices();
this.vertexIndexByTri = Core.List.Chop <int>(_mesh.VertexIndicesByTri(), 3);
BoundingBox bbox = Graphical.Geometry.MeshToolkit.BoundingBox(this._mesh);
// Extending the BoundingBox to be cubical from the centre.
// Done by getting the max component of the Bounding box and translating min and max points outwards.
// https://github.com/diwi/Space_Partitioning_Octree_BVH/blob/b7f66fe04e4af3b98ab9404363ab33f5dc1628a9/SpacePartitioning/src/DwOctree/Octree.java#L83
if (cubic)
{
using (Point center = Geometry.Point.MidPoint(bbox.MinPoint, bbox.MaxPoint))
{
Vector bboxSize = Vector.ByTwoPoints(bbox.MinPoint, bbox.MaxPoint);
Vector halfSize = bboxSize.Scale(0.5);
double[] halfComponents = new double[3] {
halfSize.X, halfSize.Y, halfSize.Z
};
double maxComponent = halfComponents[getSubdivisionPlane(bbox)];
Vector expansionDirection = Vector.ByCoordinates(maxComponent, maxComponent, maxComponent);
bbox = BoundingBox.ByCorners(
(Point)center.Translate(-maxComponent, -maxComponent, -maxComponent),
(Point)center.Translate(maxComponent, maxComponent, maxComponent)
);
}
}
_root = new OctreeNode(0, bbox);
}
public static List <List <Point> > GetVerticesOfAllPairOfTriangles(Mesh mesh)
{
List <int> faceVertexIndices = mesh.VertexIndicesByTri();
int vertexCount = (int)mesh.VertexCount;
Dictionary <int, List <int> > edgeFaceTopology = new Dictionary <int, List <int> >();
for (int i = 0; i < mesh.TriangleCount; i++)
{
int A = faceVertexIndices[i * 3];
int B = faceVertexIndices[i * 3 + 1];
int C = faceVertexIndices[i * 3 + 2];
InsertEdgeFaceTopology(edgeFaceTopology, i, A, B, vertexCount);
InsertEdgeFaceTopology(edgeFaceTopology, i, B, C, vertexCount);
InsertEdgeFaceTopology(edgeFaceTopology, i, C, A, vertexCount);
}
List <List <Point> > facePairVertices = new List <List <Point> >();
foreach (List <int> connectedFaces in edgeFaceTopology.Values)
{
if (connectedFaces.Count < 2)
{
continue;
}
HashSet <int> hashSet = new HashSet <int>();
hashSet.Add(faceVertexIndices[connectedFaces[0] * 3]);
hashSet.Add(faceVertexIndices[connectedFaces[0] * 3 + 1]);
hashSet.Add(faceVertexIndices[connectedFaces[0] * 3 + 2]);
hashSet.Add(faceVertexIndices[connectedFaces[1] * 3]);
hashSet.Add(faceVertexIndices[connectedFaces[1] * 3 + 1]);
hashSet.Add(faceVertexIndices[connectedFaces[1] * 3 + 2]);
List <Point> vertices = new List <Point>();
foreach (int i in hashSet)
{
vertices.Add(mesh.Vertices()[i]);
}
facePairVertices.Add(vertices);
}
return(facePairVertices);
}
/// <summary>
///
/// </summary>
internal void CreateAgents()
{
var agentsDict = new Dictionary <HashSet <int>, tAgent>(HashSet <int> .CreateSetComparer());
var indices = _mesh.VertexIndicesByTri();
var faces = SplitList(indices);
var normals = _mesh.TriangleNormals();
var surfaces = MakeOffsetFaces(faces, _mesh.Vertices(), normals);
// Loop through every face
for (int i = 0; i < faces.Count; i++)
{
for (int j = 0; j < faces[i].Count; j++)
{
int start = faces[i][j];
int end = faces[i][(j + 1) % faces[i].Count];
var key = new HashSet <int> {
start, end
};
if (!agentsDict.ContainsKey(key))
{
agentsDict[key] = new tAgent(agentsDict.Count);
agentsDict[key]._edge = Geo.Line.ByStartPointEndPoint(_mesh.Vertices()[start], _mesh.Vertices()[end]);
}
}
}
// Loop through every face
for (int i = 0; i < faces.Count; i++)
{
// Loop through every edge of every face
for (int j = 0; j < faces[i].Count; j++)
{
int start = faces[i][j];
int end = faces[i][(j + 1) % faces[i].Count];
int third = faces[i][(j + 2) % faces[i].Count];
var key = new HashSet <int> {
start, end
};
if (agentsDict[key]._faceIndexA != -1)
{
agentsDict[key]._isNaked = false;
agentsDict[key]._faceIndexB = i;
agentsDict[key]._faceNormalB = normals[i];
agentsDict[key]._faceSurfaceB = surfaces[i];
var neighborsB1 = agentsDict[new HashSet <int> {
start, third
}]._name;
var neighborsB2 = agentsDict[new HashSet <int> {
end, third
}]._name;
agentsDict[key]._neighborsB = new int[] { neighborsB1, neighborsB2 };
}
else
{
agentsDict[key]._faceIndexA = i;
agentsDict[key]._faceNormalA = normals[i];
agentsDict[key]._faceSurfaceA = surfaces[i];
var neighborsA1 = agentsDict[new HashSet <int> {
start, third
}]._name;
var neighborsA2 = agentsDict[new HashSet <int> {
end, third
}]._name;
agentsDict[key]._neighborsA = new int[] { neighborsA1, neighborsA2 };
}
}
}
_agents = agentsDict.Values.ToArray();
foreach (tAgent agent in _agents)
{
agent.Setup();
}
}