public Mesh ToMesh()
{
AiNativeList <float3> vertices = new AiNativeList <float3>(2);
AiNativeList <int> indices = new AiNativeList <int>(2);
GetTileGeometry(vertices, indices);
Vector3[] unityVerts = new Vector3[vertices.Length];
for (int i = 0; i < vertices.Length; i++)
{
unityVerts[i] = new Vector3(vertices[i].x, vertices[i].y, vertices[i].z);
}
Mesh mesh = new Mesh();
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
mesh.vertices = unityVerts;
mesh.uv = new Vector2[unityVerts.Length];
mesh.triangles = indices.ToArray();
mesh.RecalculateBounds();
mesh.RecalculateNormals();
vertices.Dispose();
indices.Dispose();
return(mesh);
}
public void GetTileGeometry(AiNativeList <float3> vertices, AiNativeList <int> indices)
{
AiNativeList <float3> tileVerts = new AiNativeList <float3>(2);
AiNativeList <int> tileIndices = new AiNativeList <int>(2);
foreach (byte[] data in Tiles)
{
NavMeshTile tile = new NavMeshTile();
tile.Data = data;
tile.GetTileVertices(tileVerts, tileIndices);
// Copy vertices
int vbase = vertices.Length;
for (int i = 0; i < tileVerts.Length; i++)
{
vertices.Add(tileVerts[i]);
}
// Copy indices with offset applied
for (int i = 0; i < tileIndices.Length; i++)
{
indices.Add(tileIndices[i] + vbase);
}
tileVerts.Clear();
tileIndices.Clear();
}
tileVerts.Dispose();
tileIndices.Dispose();
}
public NavMeshInputBuilder(NavMeshTileBounds tileBounds)
{
Coord = tileBounds.Coord;
BoundingBox = tileBounds.Bounds;
Vertices = new AiNativeList <float3>(2);
Indices = new AiNativeList <int>(2);
Areas = new AiNativeList <byte>(2);
}
public unsafe bool GetTileVertices(AiNativeList <float3> vertices, AiNativeList <int> indices)
{
if (Data == null || Data.Length == 0)
return(false);
fixed(byte *dataPtr = Data)
{
DtTileHeader *header = (DtTileHeader *)dataPtr;
if (header->VertCount == 0)
{
return(false);
}
int headerSize = Navigation.DtAlign4(sizeof(DtTileHeader));
int vertsSize = Navigation.DtAlign4(sizeof(float) * 3 * header->VertCount);
byte *ptr = dataPtr;
ptr += headerSize;
float3 *vertexPtr = (float3 *)ptr;
ptr += vertsSize;
DtPoly *polyPtr = (DtPoly *)ptr;
for (int i = 0; i < header->VertCount; i++)
{
vertices.Add(vertexPtr[i]);
}
for (int i = 0; i < header->PolyCount; i++)
{
// Expand polygons into triangles
var poly = polyPtr[i];
for (int j = 0; j <= poly.VertexCount - 3; j++)
{
indices.Add(poly.Vertices[0]);
indices.Add(poly.Vertices[j + 1]);
indices.Add(poly.Vertices[j + 2]);
}
}
return(true);
}
}
public void Append(AiNativeList <float3> vertices, AiNativeList <int> indices, byte area = DtArea.WALKABLE)
{
// Copy vertices
int vbase = Vertices.Length;
for (int i = 0; i < vertices.Length; i++)
{
Vertices.Add(vertices[i]);
BoundingBox = DtBoundingBox.Merge(BoundingBox, vertices[i]);
}
// Copy indices with offset applied
for (int i = 0; i < indices.Length; i++)
{
Indices.Add(indices[i] + vbase);
}
int triangleCount = indices.Length / 3;
for (int i = 0; i < triangleCount; i++)
{
Areas.Add(area);
}
}
