} // centroid indices, sorted by distance from center
public Plate(int[] vertexToPlate, IGeometry geometry, PlatePhysicsTraits traits, int plateIndex, int startIndex, ref Random rand)
{
this.geometry = geometry;
this.startIndex = startIndex;
this.vertexToPlate = vertexToPlate;
this.plateIndex = plateIndex;
this.Traits = traits;
Corners = new List <int>();
allIndices = new List <int>(6);
allIndices.Add(startIndex);
outerIndices = new List <int>(6);
outerIndices.Add(startIndex);
hue = rand.Next(500) / 500.0f;
Vector4 color = NextColor(0);
geometry.Mesh.SetColor(startIndex, ref color);
vertexToPlate[startIndex] = plateIndex;
}
private void InitializePlates()
{
// Initialize vertexToPlate array to a value that isn't a valid plate index
VertexToPlates = new int[geometry.Mesh.Length];
for (int i = 0; i < geometry.Mesh.Length; ++i)
{
VertexToPlates[i] = -1;
}
borders.Clear();
for (int plateIndex = 0; plateIndex < GetPlates().Length; ++plateIndex)
{
int plate = -1;
do
{
int vertexIndex = rand.Next(geometry.Mesh.Length);
// prevent 2 plates spawning at the same vertex.
plate = VertexToPlates[vertexIndex];
if (plate == -1)
{
var traits = new PlatePhysicsTraits();
traits.Pivot = new Vector3(rand.Next(100) - 50, rand.Next(100) - 50, rand.Next(100) - 50);
traits.Pivot.Normalize();
traits.Center = geometry.Mesh.GetPosition(vertexIndex);
if (Vector3.Dot(traits.Center, traits.Pivot) < 0)
{
traits.Pivot *= -1.0f; // Ensure pivot is at least in the same hemisphere as the plate center.
}
traits.CenterRotation = (rand.Next(200) - 100) * (float)Math.PI / 6000.0f; // -3 -> 3 degrees
traits.PivotRotation = (rand.Next(200) - 100) * (float)Math.PI / 6000.0f;
traits.Elevation = 0.0f;
GetPlates()[plateIndex] = new Plate(VertexToPlates, geometry, traits, plateIndex, vertexIndex, ref rand);
break;
}
} while (plate != -1);
}
}