private static FinalVertex FindMatchingVertex(FinalVertex input, List <FinalVertex> vertices)
{
for (int i = 0; i < vertices.Count; i++)
{
FinalVertex compare = vertices[i];
if (compare.position == input.position && compare.normal == input.normal)
{
return(compare);
}
}
return(null);
}
private static Mesh BuildMesh2(List <PolygonGroup> polygonGroups)
{
int triangleCount = 0;
List <int[]> tris = new List <int[]>();
Dictionary <Vector3, List <FinalVertex> > lookupPositions = new Dictionary <Vector3, List <FinalVertex> >();
List <Vector3> vertices = new List <Vector3>();
List <Vector3> normals = new List <Vector3>();
List <Vector2> uvCoords = new List <Vector2>();
for (int i = 0; i < polygonGroups.Count; i++)
{
PolygonGroup group = polygonGroups[i];
List <Polygon> polygons = group.polygons;
int[] triangles = new int[polygons.Count * 3];
tris.Add(triangles);
int count = 0;
for (int j = 0; j < polygons.Count; j++)
{
for (int k = 0; k < polygons[j].vertices.Length; k++)
{
FinalVertex vertex = new FinalVertex(polygons[j].vertices[k], -1);
FinalVertex match = null;
List <FinalVertex> matchList;
if (lookupPositions.TryGetValue(vertex.position, out matchList))
{
match = FindMatchingVertex(vertex, matchList);
}
else
{
matchList = new List <FinalVertex>();
matchList.Add(vertex);
lookupPositions.Add(vertex.position, matchList);
}
if (match != null)
{
triangles[count] = match.triangleIndex;
}
else
{
vertex.triangleIndex = triangleCount++;
triangles[count] = vertex.triangleIndex;
vertices.Add(vertex.position);
normals.Add(vertex.normal);
uvCoords.Add(vertex.uvCoord);
}
count++;
}
}
}
Mesh mesh = new Mesh();
mesh.subMeshCount = polygonGroups.Count;
mesh.SetVertices(vertices);
mesh.SetUVs(0, uvCoords);
mesh.SetNormals(normals);
for (int i = 0; i < polygonGroups.Count; i++)
{
mesh.SetTriangles(tris[i], i);
}
return(mesh);
}
private static Mesh BuildMesh(List <Polygon> groupedPolygons)
{
if (groupedPolygons.Count == 0)
{
return(null);
}
FinalVertex[] subObjectVertices = new FinalVertex[groupedPolygons.Count * 3];
int[] triangles = new int[groupedPolygons.Count * 3];
int triangleCount = 0;
int vertIdx = 0;
for (int i = 0; i < groupedPolygons.Count; i++)
{
subObjectVertices[vertIdx++] = new FinalVertex(groupedPolygons[i].vertices[0], -1);
subObjectVertices[vertIdx++] = new FinalVertex(groupedPolygons[i].vertices[1], -1);
subObjectVertices[vertIdx++] = new FinalVertex(groupedPolygons[i].vertices[2], -1);
}
Dictionary <Vector3, List <FinalVertex> > lookupPositions = new Dictionary <Vector3, List <FinalVertex> >();
List <Vector3> vertices = new List <Vector3>();
List <Vector3> normals = new List <Vector3>();
List <Vector2> uvCoords = new List <Vector2>();
for (int i = 0; i < subObjectVertices.Length; i++)
{
FinalVertex vertex = subObjectVertices[i];
FinalVertex match = null;
List <FinalVertex> matchList;
if (lookupPositions.TryGetValue(vertex.position, out matchList))
{
match = FindMatchingVertex(vertex, matchList);
}
else
{
matchList = new List <FinalVertex>();
matchList.Add(vertex);
lookupPositions.Add(vertex.position, matchList);
}
if (match != null)
{
triangles[i] = match.triangleIndex;
}
else
{
vertex.triangleIndex = triangleCount++;
triangles[i] = vertex.triangleIndex;
vertices.Add(subObjectVertices[i].position);
normals.Add(subObjectVertices[i].normal);
uvCoords.Add(subObjectVertices[i].uvCoord);
}
}
Mesh mesh = new Mesh();
mesh.SetVertices(vertices);
mesh.SetUVs(0, uvCoords);
mesh.SetNormals(normals);
mesh.SetTriangles(triangles, 0); // = triangles;
return(mesh);
}
