public void drawEdge()
{
if (node0.getParentCell() != null && node1.getParentCell() != null)
{
if (theLine == null)
{
theLine = new GameObject().AddComponent <LineRenderer>();
theLine.name = "EdgeLine";
theLine.material = new Material(Shader.Find("Particles/Additive"));
theLine.tag = "Lines";
}
theLine.SetWidth(0.7f, 0.7f);
theLine.SetColors(theDrawColor, theDrawColor);
theLine.SetVertexCount(2);
theLine.SetPosition(0, new Vector3(node0.getVertex().x, node0.getVertex().y, -3));
theLine.SetPosition(1, new Vector3(node1.getVertex().x, node1.getVertex().y, -3));
}
}
//Adds a verticies to the triangulation
private void addVertexToTriangulation()
{
//check what mode the triangulation is running in
if (stage == 0 || (!doStep && !animate))
{
//Find a Random verticie from the todo list
int choice = Random.Range(0, toAddList.Count);
//Change the color of all other verticies
foreach (VertexNode aNode in toAddList)
{
aNode.getParentCell().GetComponent <Renderer>().material.color = new Color(255, 255, 255, 255);
}
//set next node to selected verticies
nextNode = toAddList[choice];
nextNode.getParentCell().GetComponent <Renderer>().material.color = new Color(0, 0, 255, 255);
//remove selected verticies from todo list
toAddList.Remove(nextNode);
if (doStep || animate)
{
stage++;
return;
}
}
if (stage == 1 || (!doStep && !animate))
{
//stores triangles created during the loop to be appended to main list after loop
List <Triangle> tempTriList = new List <Triangle>();
//All edges are clean at this point. Remove any that may be left over from previous loop
dirtyEdges.Clear();
float count = -1;
foreach (Triangle aTri in triangleList)
{
List <Edge> triEdges = aTri.getEdges();
count++;
//Find which triangle the current vertex being add is located within
if (LineIntersection.PointInTraingle(nextNode.getVertex(), triEdges[0].getNode0().getVertex(),
triEdges[0].getNode1().getVertex(), triEdges[1].getNode1().getVertex()))
{
//cache the triangle we are in so we can delete it after loop
inTriangle = aTri;
//create three new triangles from each edge of the triangle vertex is in to the new vertex
foreach (Edge aEdge in aTri.getEdges())
{
Triangle nTri1 = new Triangle(new Edge(nextNode, aEdge.getNode0()),
new Edge(nextNode, aEdge.getNode1()),
new Edge(aEdge.getNode1(), aEdge.getNode0()));
//cache created triangles so we can add to list after loop
tempTriList.Add(nTri1);
//mark the edges of the old triangle as dirty
dirtyEdges.Add(new Edge(aEdge.getNode0(), aEdge.getNode1()));
}
break;
}
}
//add the three new triangles to the triangle list
foreach (Triangle aTri in tempTriList)
{
triangleList.Add(aTri);
}
//delete the old triangle that the vertex was inside of
if (inTriangle != null)
{
triangleList.Remove(inTriangle);
inTriangle.stopDraw();
inTriangle = null;
}
if (doStep || animate)
{
stage++;
return;
}
}
if (stage == 2 || !doStep)
{
//recursively check the dirty edges to make sure they are still delaunay
checkEdges(dirtyEdges);
}
}