void HandleHeader(OpenFlight.Node node, Scene.Node parent)
{
foreach (var record in node.Records)
{
switch (record.Opcode)
{
case OpenFlight.Opcode.ColorPalette: HandleColorPalette(record); break;
case OpenFlight.Opcode.MaterialPalette: HandleMaterialPalette(record); break;
case OpenFlight.Opcode.TexturePalette: HandleTexturePalette(record); break;
case OpenFlight.Opcode.VertexPalette: HandleVertexPalette(record); break;
}
}
if (TexturePalette.Count > 0)
{
/* TODO: uncomment this
*
* Scene.Textures = new List<Scene.Texture>();
* foreach (var flt_texture in TexturePalette)
* {
* var texture = new Scene.Texture();
* texture.Name = flt_texture.Value.Filename;
* Scene.Textures.Add(texture);
* SceneTextureIndexForTexturePaletteEntry.Add(flt_texture.Key, Scene.Textures.Count - 1);
* }
*/
}
foreach (var child in node.Children)
{
HandleNode(child, parent);
}
}
void HandleLevelOfDetail(OpenFlight.Node node, Scene.Node parent)
{
var flt_lod = Parser.ParseLevelOfDetail(node.Record);
var lod = new Scene.LOD();
lod.Name = flt_lod.ID;
lod.SwitchInDistance = flt_lod.SwitchInDistance;
lod.SwitchOutDistance = flt_lod.SwitchOutDistance;
parent.AddChild(lod);
foreach (var child in node.Children)
{
HandleNode(child, lod);
}
}
void HandleObject(OpenFlight.Node node, Scene.Node parent)
{
var flt_object = Parser.ParseObject(node.Record);
var group = new Scene.Group();
group.Name = flt_object.ID;
parent.AddChild(group);
foreach (var child in node.Children)
{
HandleNode(child, group);
}
if (WorkingGroup != null)
{
CloseWorkingGroup();
}
}
void HandleFace(OpenFlight.Node node, Scene.Node parent)
{
if (WorkingGroup == null)
{
WorkingGroup = new WorkingGroup_();
WorkingGroup.Parent = parent;
}
var face = Parser.ParseFace(node.Record);
// TODO: face properties
WorkingGroup.Material = MaterialForFace(face);
if (!WorkingGroup.MeshMap.ContainsKey(WorkingGroup.Material))
{
WorkingGroup.MeshMap[WorkingGroup.Material] = new WorkingMesh();
}
var working_mesh = WorkingGroup.MeshMap[WorkingGroup.Material];
working_mesh.MaterialIndex = Scene.Materials.IndexOf(WorkingGroup.Material);
int before_index = working_mesh.CurrentVertexIndex;
foreach (var child in node.Children)
{
HandleNode(child, parent);
}
int after_index = working_mesh.CurrentVertexIndex;
if (after_index - before_index == 3)
{
working_mesh.Triangles.Add(before_index + 0);
working_mesh.Triangles.Add(before_index + 2);
working_mesh.Triangles.Add(before_index + 1);
return;
}
if (after_index - before_index == 4)
{
working_mesh.Triangles.Add(before_index + 0);
working_mesh.Triangles.Add(before_index + 2);
working_mesh.Triangles.Add(before_index + 1);
working_mesh.Triangles.Add(before_index + 2);
working_mesh.Triangles.Add(before_index + 0);
working_mesh.Triangles.Add(before_index + 3);
return;
}
UnityEngine.Debug.LogError("FLT: invalid vertex count");
}
void HandleNode(OpenFlight.Node node, Scene.Node parent)
{
switch (node.Record.Opcode)
{
case OpenFlight.Opcode.Header: HandleHeader(node, parent); break;
case OpenFlight.Opcode.Group: HandleGroup(node, parent); break;
case OpenFlight.Opcode.Object: HandleObject(node, parent); break;
case OpenFlight.Opcode.Face: HandleFace(node, parent); break;
case OpenFlight.Opcode.VertexList: HandleVertexList(node, parent); break;
case OpenFlight.Opcode.Mesh: HandleMesh(node, parent); break;
case OpenFlight.Opcode.LevelOfDetail: HandleLevelOfDetail(node, parent); break;
}
}
void HandleVertexList(OpenFlight.Node node, Scene.Node parent)
{
var working_mesh = WorkingGroup.MeshMap[WorkingGroup.Material];
var vertex_list = Parser.ParseVertexList(node.Record);
foreach (var offset in vertex_list.Offsets)
{
++working_mesh.CurrentVertexIndex;
var vertex = VertexPalette[offset];
// TODO: transform
double x = vertex.Coordinate.X;
double y = vertex.Coordinate.Z;
double z = vertex.Coordinate.Y;
var normal = vertex.HasNormal ? new UnityEngine.Vector3(vertex.Normal.I, vertex.Normal.K, vertex.Normal.J) : UnityEngine.Vector3.zero;
var uv = vertex.HasUV ? new UnityEngine.Vector2(vertex.UV.U, vertex.UV.V) : UnityEngine.Vector2.zero;
var color = vertex.IsPackedColor ? new UnityEngine.Color32(vertex.PackedColor.R, vertex.PackedColor.G, vertex.PackedColor.B, vertex.PackedColor.A) : new UnityEngine.Color32(255, 255, 255, 255);
working_mesh.Vertices.Add(new UnityEngine.Vector3((float)x, (float)y, (float)z));
working_mesh.Normals.Add(normal);
working_mesh.UVs.Add(uv);
working_mesh.Colors.Add(color);
}
}
void HandleMesh(OpenFlight.Node node, Scene.Node parent)
{
var flt_mesh = Parser.ParseMesh(node.Record);
OpenFlight.LocalVertexPool local_vertex_pool = null;
OpenFlight.MeshPrimitive mesh_primitive = null;
foreach (var record in node.Records)
{
switch (record.Opcode)
{
case OpenFlight.Opcode.LocalVertexPool:
local_vertex_pool = Parser.ParseLocalVertexPool(record);
break;
case OpenFlight.Opcode.MeshPrimitive:
mesh_primitive = Parser.ParseMeshPrimitive(record);
break;
}
}
if (local_vertex_pool == null)
{
return;
}
if (mesh_primitive == null)
{
return;
}
if (!local_vertex_pool.HasPosition)
{
return;
}
if (mesh_primitive.Type == 4)
{
UnityEngine.Debug.LogFormat("{0}: indexed poly is not currently supported.", node.Record.ToString());
return;
}
var mesh = new Scene.Mesh();
parent.AddChild(mesh);
var material = MaterialForMesh(flt_mesh);
mesh.MaterialIndex = Scene.Materials.IndexOf(material);
mesh.Name = flt_mesh.ID;
var count = local_vertex_pool.Coordinates.Length;
mesh.Vertices = new UnityEngine.Vector3[count];
for (int i = 0; i < count; ++i)
{
// TODO: transform
mesh.Vertices[i].x = (float)local_vertex_pool.Coordinates[i].X;
mesh.Vertices[i].y = (float)local_vertex_pool.Coordinates[i].Z;
mesh.Vertices[i].z = (float)local_vertex_pool.Coordinates[i].Y;
}
if (local_vertex_pool.HasNormal)
{
mesh.Normals = new UnityEngine.Vector3[count];
for (int i = 0; i < count; ++i)
{
mesh.Normals[i].x = local_vertex_pool.Normals[i].I;
mesh.Normals[i].y = local_vertex_pool.Normals[i].K;
mesh.Normals[i].z = local_vertex_pool.Normals[i].J;
}
}
if (local_vertex_pool.HasBaseUV)
{
mesh.UVs1 = new UnityEngine.Vector2[count];
for (int i = 0; i < count; ++i)
{
mesh.UVs1[i].x = local_vertex_pool.UVBase[i].U;
mesh.UVs1[i].y = local_vertex_pool.UVBase[i].V;
}
}
if (local_vertex_pool.HasRGBAColor)
{
mesh.Colors = new UnityEngine.Color32[count];
for (int i = 0; i < count; ++i)
{
mesh.Colors[i].r = local_vertex_pool.Colors[i].R;
mesh.Colors[i].g = local_vertex_pool.Colors[i].G;
mesh.Colors[i].b = local_vertex_pool.Colors[i].B;
mesh.Colors[i].a = local_vertex_pool.Colors[i].A;
}
}
var index_count = mesh_primitive.Indices.Length;
if (mesh_primitive.Type == 1) // triangle strip
{
mesh.Triangles = new int[(index_count - 2) * 3];
for (int i = 0; i + 2 < index_count; ++i)
{
if (i % 2 == 0)
{
mesh.Triangles[(i * 3) + 0] = mesh_primitive.Indices[i + 1];
mesh.Triangles[(i * 3) + 1] = mesh_primitive.Indices[i + 0];
mesh.Triangles[(i * 3) + 2] = mesh_primitive.Indices[i + 2];
}
else
{
mesh.Triangles[(i * 3) + 0] = mesh_primitive.Indices[i + 0];
mesh.Triangles[(i * 3) + 1] = mesh_primitive.Indices[i + 1];
mesh.Triangles[(i * 3) + 2] = mesh_primitive.Indices[i + 2];
}
}
}
if (mesh_primitive.Type == 2) // triangle fan
{
mesh.Triangles = new int[(index_count - 2) * 3];
for (int i = 0; i + 2 < index_count; ++i)
{
mesh.Triangles[(i * 3) + 0] = mesh_primitive.Indices[0];
mesh.Triangles[(i * 3) + 1] = mesh_primitive.Indices[i + 1];
mesh.Triangles[(i * 3) + 2] = mesh_primitive.Indices[i + 2];
}
}
if (mesh_primitive.Type == 3) // quad strip
{
mesh.Triangles = new int[((index_count / 2) - 1) * 6];
for (int i = 0; i + 1 < index_count; i += 2)
{
mesh.Triangles[(i * 6) + 0] = mesh_primitive.Indices[i + 0];
mesh.Triangles[(i * 6) + 1] = mesh_primitive.Indices[i + 1];
mesh.Triangles[(i * 6) + 2] = mesh_primitive.Indices[i + 2];
mesh.Triangles[(i * 6) + 3] = mesh_primitive.Indices[i + 2];
mesh.Triangles[(i * 6) + 4] = mesh_primitive.Indices[i + 1];
mesh.Triangles[(i * 6) + 5] = mesh_primitive.Indices[i + 3];
}
}
}