public static void lib3ds_mesh_resize_faces(Lib3dsMesh mesh, ushort nfaces)
{
Debug.Assert(mesh != null);
if (nfaces > 0)
{
if (mesh.faces == null)
{
mesh.faces = new List <Lib3dsFace>();
}
while (mesh.faces.Count < nfaces)
{
mesh.faces.Add(new Lib3dsFace());
mesh.faces[mesh.faces.Count - 1].material = -1;
}
if (mesh.faces.Count > nfaces)
{
mesh.faces.RemoveRange(nfaces, mesh.faces.Count - nfaces);
}
}
else
{
mesh.faces = null;
}
mesh.nfaces = nfaces;
}
public static void lib3ds_mesh_resize_vertices(Lib3dsMesh mesh, ushort nvertices, bool use_texcos, bool use_flags)
{
Debug.Assert(mesh!=null);
if(nvertices>0)
{
if(mesh.vertices==null) mesh.vertices=new List<Lib3dsVertex>();
while(mesh.vertices.Count<nvertices) mesh.vertices.Add(new Lib3dsVertex());
if(mesh.vertices.Count>nvertices) mesh.vertices.RemoveRange(nvertices, mesh.vertices.Count-nvertices);
}
else mesh.vertices=null;
ushort tmp=(ushort)(use_texcos?nvertices:(ushort)0);
if(tmp>0)
{
if(mesh.texcos==null) mesh.texcos=new List<Lib3dsTexturecoordinate>();
while(mesh.texcos.Count<tmp) mesh.texcos.Add(new Lib3dsTexturecoordinate());
if(mesh.texcos.Count>tmp) mesh.texcos.RemoveRange(tmp, mesh.texcos.Count-tmp);
}
else mesh.texcos=null;
tmp=(ushort)(use_flags?nvertices:(ushort)0);
if(tmp>0)
{
if(mesh.vflags==null) mesh.vflags=new List<ushort>();
while(mesh.vflags.Count<tmp) mesh.vflags.Add(0);
if(mesh.vflags.Count>tmp) mesh.vflags.RemoveRange(tmp, mesh.vflags.Count-tmp);
}
else mesh.vflags=null;
mesh.nvertices=nvertices;
}
public static Lib3dsMeshInstanceNode lib3ds_node_new_mesh_instance(Lib3dsMesh mesh, string instance_name, float[] pos0, float[] scl0, float[] rot0)
{
Lib3dsNode node = lib3ds_node_new(Lib3dsNodeType.LIB3DS_NODE_MESH_INSTANCE);
if (mesh != null)
{
node.name = mesh.name;
}
else
{
node.name = "$$$DUMMY";
}
Lib3dsMeshInstanceNode n = (Lib3dsMeshInstanceNode)node;
if (instance_name != null)
{
n.instance_name = instance_name;
}
else
{
n.instance_name = "";
}
lib3ds_track_resize(n.pos_track, 1);
if (pos0 != null)
{
lib3ds_vector_copy(n.pos_track.keys[0].value, pos0);
}
lib3ds_track_resize(n.scl_track, 1);
if (scl0 != null)
{
lib3ds_vector_copy(n.scl_track.keys[0].value, scl0);
}
else
{
lib3ds_vector_make(n.scl_track.keys[0].value, 1, 1, 1);
}
lib3ds_track_resize(n.rot_track, 1);
if (rot0 != null)
{
for (int i = 0; i < 4; i++)
{
n.rot_track.keys[0].value[i] = rot0[i];
}
}
else
{
for (int i = 0; i < 4; i++)
{
n.rot_track.keys[0].value[i] = 0;
}
}
return(n);
}
// Find the bounding box of a mesh object.
//
// \param mesh The mesh object
// \param bmin Returned bounding box
// \param bmax Returned bounding box
public static void lib3ds_mesh_bounding_box(Lib3dsMesh mesh, float[] bmin, float[] bmax)
{
bmin[0] = bmin[1] = bmin[2] = float.MaxValue;
bmax[0] = bmax[1] = bmax[2] = -float.MaxValue;
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_vector_min(bmin, mesh.vertices[i]);
lib3ds_vector_max(bmax, mesh.vertices[i]);
}
}
public static void lib3ds_mesh_calculate_face_normals(Lib3dsMesh mesh, float[][] face_normals)
{
if (mesh.nfaces == 0)
{
return;
}
for (int i = 0; i < mesh.nfaces; i++)
{
lib3ds_vector_normal(face_normals[i], mesh.vertices[mesh.faces[i].index[0]], mesh.vertices[mesh.faces[i].index[1]], mesh.vertices[mesh.faces[i].index[2]]);
}
}
public static void lib3ds_file_insert_mesh(Lib3dsFile file, Lib3dsMesh mesh, int index)
{
Debug.Assert(file != null);
if (index < 0)
{
file.meshes.Add(mesh);
}
else
{
file.meshes.Insert(index, mesh);
}
}
public static void AddMeshTo3DS(Lib3dsFile res, PSKFile f, Matrix m)
{
Lib3dsMesh mesh = new Lib3dsMesh();
string name = "Box00" + res.meshes.Count.ToString();
mesh.name = name;
mesh.matrix = Matrix2FA(Matrix.Identity);
mesh.vertices = new List<Lib3dsVertex>();
foreach (PSKFile.PSKPoint p in f.psk.points)
{
Vector3 v = p.ToVector3();
v = Vector3.TransformCoordinate(v, m);
mesh.vertices.Add(new Lib3dsVertex(v.X, -v.Y, v.Z));
}
mesh.texcos = new List<Lib3dsTexturecoordinate>();
for (int i = 0; i < f.psk.points.Count; i++)
foreach (PSKFile.PSKEdge e in f.psk.edges)
if (e.index == i)
mesh.texcos.Add(new Lib3dsTexturecoordinate(e.U, e.V));
mesh.faces = new List<Lib3dsFace>();
foreach (PSKFile.PSKFace face in f.psk.faces)
{
Lib3dsFace ff = new Lib3dsFace();
ff.flags = 6;
ff.index = new ushort[3];
ff.index[0] = (ushort)f.psk.edges[face.v0].index;
ff.index[1] = (ushort)f.psk.edges[face.v2].index;
ff.index[2] = (ushort)f.psk.edges[face.v1].index;
mesh.faces.Add(ff);
}
mesh.nfaces = (ushort)mesh.faces.Count;
mesh.nvertices = (ushort)mesh.vertices.Count;
mesh.map_type = Lib3dsMapType.LIB3DS_MAP_NONE;
mesh.object_flags = 0;
mesh.color = 128;
res.meshes.Add(mesh);
Lib3dsNode node = new Lib3dsMeshInstanceNode();
node.matrixNode = Matrix2FA(Matrix.Identity);
node.parent = null;
node.parent_id = 0xffff;
node.hasNodeID = true;
node.type = Lib3dsNodeType.LIB3DS_NODE_MESH_INSTANCE;
node.flags = res.nodes[0].flags;
node.node_id = (ushort)(res.meshes.Count() - 1);
node.name = name;
res.nodes.Add(node);
}
// Create and return a new empty mesh object.
//
// Mesh is initialized with the name and an identity matrix; all
// other fields are zero.
//
// See Lib3dsFaceFlag for definitions of per-face flags.
//
// \param name Mesh name. Must not be NULL. Must be < 64 characters.
//
// \return mesh object or NULL on error.
public static Lib3dsMesh lib3ds_mesh_new(string name)
{
Debug.Assert(name != null);
Debug.Assert(name.Length < 64);
try
{
Lib3dsMesh mesh = new Lib3dsMesh();
mesh.name = name;
lib3ds_matrix_identity(mesh.matrix);
mesh.map_type = Lib3dsMapType.LIB3DS_MAP_NONE;
return(mesh);
}
catch
{
return(null);
}
}
// Create and return a new empty mesh object.
//
// Mesh is initialized with the name and an identity matrix; all
// other fields are zero.
//
// See Lib3dsFaceFlag for definitions of per-face flags.
//
// \param name Mesh name. Must not be NULL. Must be < 64 characters.
//
// \return mesh object or NULL on error.
public static Lib3dsMesh lib3ds_mesh_new(string name)
{
Debug.Assert(name!=null);
Debug.Assert(name.Length<64);
try
{
Lib3dsMesh mesh=new Lib3dsMesh();
mesh.name=name;
lib3ds_matrix_identity(mesh.matrix);
mesh.map_type=Lib3dsMapType.LIB3DS_MAP_NONE;
return mesh;
}
catch
{
return null;
}
}
public static void lib3ds_mesh_resize_faces(Lib3dsMesh mesh, ushort nfaces)
{
Debug.Assert(mesh!=null);
if(nfaces>0)
{
if(mesh.faces==null) mesh.faces=new List<Lib3dsFace>();
while(mesh.faces.Count<nfaces)
{
mesh.faces.Add(new Lib3dsFace());
mesh.faces[mesh.faces.Count-1].material=-1;
}
if(mesh.faces.Count>nfaces) mesh.faces.RemoveRange(nfaces, mesh.faces.Count-nfaces);
}
else mesh.faces=null;
mesh.nfaces=nfaces;
}
static void flag_array_write(Lib3dsMesh mesh, Lib3dsIo io)
{
if (mesh.vflags == null)
{
return;
}
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_POINT_FLAG_ARRAY;
c.size = 8 + 2u * mesh.nvertices;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, mesh.nvertices);
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_io_write_word(io, mesh.vflags[i]);
}
}
static void texco_array_write(Lib3dsMesh mesh, Lib3dsIo io)
{
if (mesh.texcos == null)
{
return;
}
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_TEX_VERTS;
c.size = 8 + 8u * mesh.nvertices;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, mesh.nvertices);
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_io_write_float(io, mesh.texcos[i].s);
lib3ds_io_write_float(io, mesh.texcos[i].t);
}
}
static void point_array_write(Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_POINT_ARRAY;
c.size = 8 + 12u * mesh.nvertices;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, mesh.nvertices);
if (lib3ds_matrix_det(mesh.matrix) >= 0.0f)
{
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_io_write_vector(io, mesh.vertices[i]);
}
}
else
{
// Flip X coordinate of vertices if mesh matrix has negative determinant
float[,] inv_matrix = new float[4, 4], M = new float[4, 4];
float[] tmp = new float[3];
lib3ds_matrix_copy(inv_matrix, mesh.matrix);
lib3ds_matrix_inv(inv_matrix);
lib3ds_matrix_copy(M, mesh.matrix);
lib3ds_matrix_scale(M, -1.0f, 1.0f, 1.0f);
lib3ds_matrix_mult(M, M, inv_matrix);
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_vector_transform(tmp, M, mesh.vertices[i]);
lib3ds_io_write_vector(io, tmp);
}
}
}
static void face_array_write(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
if(mesh.nfaces==0) return;
Lib3dsChunk c_face_array=new Lib3dsChunk();
c_face_array.chunk=Lib3dsChunks.CHK_FACE_ARRAY;
lib3ds_chunk_write_start(c_face_array, io);
lib3ds_io_write_word(io, mesh.nfaces);
for(int i=0; i<mesh.nfaces; i++)
{
lib3ds_io_write_word(io, mesh.faces[i].index[0]);
lib3ds_io_write_word(io, mesh.faces[i].index[1]);
lib3ds_io_write_word(io, mesh.faces[i].index[2]);
lib3ds_io_write_word(io, mesh.faces[i].flags);
}
{
// ---- MSH_CHK_MAT_GROUP ----
Lib3dsChunk c=new Lib3dsChunk();
ushort num;
bool[] matf=new bool[mesh.nfaces];
for(ushort i=0; i<mesh.nfaces; i++)
{
if(!matf[i]&&(mesh.faces[i].material>=0)&&(mesh.faces[i].material<file.materials.Count))
{
matf[i]=true;
num=1;
for(ushort j=(ushort)(i+1); j<mesh.nfaces; j++)
if(mesh.faces[i].material==mesh.faces[j].material) num++;
c.chunk=Lib3dsChunks.CHK_MSH_MAT_GROUP;
c.size=(uint)(6+file.materials[mesh.faces[i].material].name.Length+1+2+2*num);
lib3ds_chunk_write(c, io);
lib3ds_io_write_string(io, file.materials[mesh.faces[i].material].name);
lib3ds_io_write_word(io, num);
lib3ds_io_write_word(io, i);
for(ushort j=(ushort)(i+1); j<mesh.nfaces; j++)
{
if(mesh.faces[i].material==mesh.faces[j].material)
{
lib3ds_io_write_word(io, j);
matf[j]=true;
}
}
}
}
}
{
// ---- SMOOTH_GROUP ----
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_SMOOTH_GROUP;
c.size=6+4u*mesh.nfaces;
lib3ds_chunk_write(c, io);
for(int i=0; i<mesh.nfaces; i++) lib3ds_io_write_dword(io, mesh.faces[i].smoothing_group);
}
if(mesh.box_front.Length>0||mesh.box_back.Length>0||mesh.box_left.Length>0||mesh.box_right.Length>0||mesh.box_top.Length>0||mesh.box_bottom.Length>0)
{ // ---- MSH_BOXMAP ----
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_MSH_BOXMAP;
lib3ds_chunk_write_start(c, io);
lib3ds_io_write_string(io, mesh.box_front);
lib3ds_io_write_string(io, mesh.box_back);
lib3ds_io_write_string(io, mesh.box_left);
lib3ds_io_write_string(io, mesh.box_right);
lib3ds_io_write_string(io, mesh.box_top);
lib3ds_io_write_string(io, mesh.box_bottom);
lib3ds_chunk_write_end(c, io);
}
lib3ds_chunk_write_end(c_face_array, io);
}
public BuildingObjectLib3DS CreateBuildingModel()
{
BuildingObjectLib3DS Building;
Hashtable Textures = new Hashtable();
Lib3dsMesh test = new Lib3dsMesh();
OpenGLControl openglCtr = new SharpGL.OpenGLControl();
foreach (Lib3dsMaterial material in MyModel.materials)
{
Texture texture = new Texture();
try
{
texture.Create(openglCtr.OpenGL, "..\\Model\\" + material.name + ".jpg");
Textures.Add(material.name, texture);
}
catch
{
// Do not find the texture file
}
}
Building = new BuildingObjectLib3DS(null, BuildingObjectType.Building, 0,
MyModel, Textures);
foreach (Lib3dsMeshInstanceNode node in MyModel.nodes)
{
if (node.type != Lib3dsNodeType.LIB3DS_NODE_MESH_INSTANCE || node.childs == null)
continue;
Building.AddNewChild(node);
}
return Building;
}
public static void lib3ds_mesh_read(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c = new Lib3dsChunk();
Lib3dsChunks chunk;
lib3ds_chunk_read_start(c, Lib3dsChunks.CHK_N_TRI_OBJECT, io);
while ((chunk = lib3ds_chunk_read_next(c, io)) != 0)
{
switch (chunk)
{
case Lib3dsChunks.CHK_MESH_MATRIX:
lib3ds_matrix_identity(mesh.matrix);
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 3; j++)
{
mesh.matrix[i, j] = lib3ds_io_read_float(io);
}
}
break;
case Lib3dsChunks.CHK_MESH_COLOR:
mesh.color = lib3ds_io_read_byte(io);
break;
case Lib3dsChunks.CHK_POINT_ARRAY:
{
ushort nvertices = lib3ds_io_read_word(io);
lib3ds_mesh_resize_vertices(mesh, nvertices, mesh.texcos != null, mesh.vflags != null);
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_io_read_vector(io, mesh.vertices[i]);
}
}
break;
case Lib3dsChunks.CHK_POINT_FLAG_ARRAY:
{
ushort nflags = lib3ds_io_read_word(io);
ushort nvertices = (mesh.nvertices >= nflags)?mesh.nvertices:nflags;
lib3ds_mesh_resize_vertices(mesh, nvertices, mesh.texcos != null, true);
for (int i = 0; i < nflags; i++)
{
mesh.vflags[i] = lib3ds_io_read_word(io);
}
}
break;
case Lib3dsChunks.CHK_FACE_ARRAY:
lib3ds_chunk_read_reset(c, io);
face_array_read(file, mesh, io);
break;
case Lib3dsChunks.CHK_MESH_TEXTURE_INFO:
//FIXME: mesh.map_type = lib3ds_io_read_word(io);
for (int i = 0; i < 2; i++)
{
mesh.map_tile[i] = lib3ds_io_read_float(io);
}
for (int i = 0; i < 3; i++)
{
mesh.map_pos[i] = lib3ds_io_read_float(io);
}
mesh.map_scale = lib3ds_io_read_float(io);
lib3ds_matrix_identity(mesh.map_matrix);
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 3; j++)
{
mesh.map_matrix[i, j] = lib3ds_io_read_float(io);
}
}
for (int i = 0; i < 2; i++)
{
mesh.map_planar_size[i] = lib3ds_io_read_float(io);
}
mesh.map_cylinder_height = lib3ds_io_read_float(io);
break;
case Lib3dsChunks.CHK_TEX_VERTS:
{
ushort ntexcos = lib3ds_io_read_word(io);
ushort nvertices = (mesh.nvertices >= ntexcos)?mesh.nvertices:ntexcos;
if (mesh.texcos == null)
{
lib3ds_mesh_resize_vertices(mesh, nvertices, true, mesh.vflags != null);
}
for (int i = 0; i < ntexcos; i++)
{
mesh.texcos[i].s = lib3ds_io_read_float(io);
mesh.texcos[i].t = lib3ds_io_read_float(io);
}
break;
}
default: lib3ds_chunk_unknown(chunk, io); break;
}
}
if (lib3ds_matrix_det(mesh.matrix) < 0.0)
{
// Flip X coordinate of vertices if mesh matrix has negative determinant
float[,] inv_matrix = new float[4, 4], M = new float[4, 4];
float[] tmp = new float[3];
lib3ds_matrix_copy(inv_matrix, mesh.matrix);
lib3ds_matrix_inv(inv_matrix);
lib3ds_matrix_copy(M, mesh.matrix);
lib3ds_matrix_scale(M, -1.0f, 1.0f, 1.0f);
lib3ds_matrix_mult(M, M, inv_matrix);
for (int i = 0; i < mesh.nvertices; i++)
{
lib3ds_vector_transform(tmp, M, mesh.vertices[i]);
lib3ds_vector_copy(mesh.vertices[i], tmp);
}
}
lib3ds_chunk_read_end(c, io);
}
static void named_object_read(Lib3dsFile file, Lib3dsIo io)
{
Lib3dsChunk c = new Lib3dsChunk();
string name;
Lib3dsChunks chunk;
Lib3dsMesh mesh = null;
Lib3dsCamera camera = null;
Lib3dsLight light = null;
Lib3dsObjectFlags object_flags = 0;
lib3ds_chunk_read_start(c, Lib3dsChunks.CHK_NAMED_OBJECT, io);
name = lib3ds_io_read_string(io, 64);
lib3ds_io_log(io, Lib3dsLogLevel.LIB3DS_LOG_INFO, "NAME={0}", name);
lib3ds_chunk_read_tell(c, io);
while ((chunk = lib3ds_chunk_read_next(c, io)) != 0)
{
switch (chunk)
{
case Lib3dsChunks.CHK_N_TRI_OBJECT:
mesh = lib3ds_mesh_new(name);
lib3ds_file_insert_mesh(file, mesh, -1);
lib3ds_chunk_read_reset(c, io);
lib3ds_mesh_read(file, mesh, io);
break;
case Lib3dsChunks.CHK_N_CAMERA:
camera = lib3ds_camera_new(name);
lib3ds_file_insert_camera(file, camera, -1);
lib3ds_chunk_read_reset(c, io);
lib3ds_camera_read(camera, io);
break;
case Lib3dsChunks.CHK_N_DIRECT_LIGHT:
light = lib3ds_light_new(name);
lib3ds_file_insert_light(file, light, -1);
lib3ds_chunk_read_reset(c, io);
lib3ds_light_read(light, io);
break;
case Lib3dsChunks.CHK_OBJ_HIDDEN: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_HIDDEN; break;
case Lib3dsChunks.CHK_OBJ_DOESNT_CAST: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_DOESNT_CAST; break;
case Lib3dsChunks.CHK_OBJ_VIS_LOFTER: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_VIS_LOFTER; break;
case Lib3dsChunks.CHK_OBJ_MATTE: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_MATTE; break;
case Lib3dsChunks.CHK_OBJ_DONT_RCVSHADOW: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_DONT_RCVSHADOW; break;
case Lib3dsChunks.CHK_OBJ_FAST: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_FAST; break;
case Lib3dsChunks.CHK_OBJ_FROZEN: object_flags |= Lib3dsObjectFlags.LIB3DS_OBJECT_FROZEN; break;
default: lib3ds_chunk_unknown(chunk, io); break;
}
}
if (mesh != null)
{
mesh.object_flags = object_flags;
}
if (camera != null)
{
camera.object_flags = object_flags;
}
if (light != null)
{
light.object_flags = object_flags;
}
lib3ds_chunk_read_end(c, io);
}
static void file_bounding_box_of_nodes_impl(Lib3dsNode node, Lib3dsFile file, bool include_meshes, bool include_cameras, bool include_lights, float[] bmin, float[] bmax, float[,] matrix)
{
switch (node.type)
{
case Lib3dsNodeType.LIB3DS_NODE_MESH_INSTANCE:
if (include_meshes)
{
Lib3dsMeshInstanceNode n = (Lib3dsMeshInstanceNode)node;
int index = lib3ds_file_mesh_by_name(file, n.instance_name);
if (index < 0)
{
index = lib3ds_file_mesh_by_name(file, node.name);
}
if (index >= 0)
{
float[,] inv_matrix = new float[4, 4], M = new float[4, 4];
float[] v = new float[3];
Lib3dsMesh mesh = file.meshes[index];
lib3ds_matrix_copy(inv_matrix, mesh.matrix);
lib3ds_matrix_inv(inv_matrix);
lib3ds_matrix_mult(M, matrix, node.matrixNode);
lib3ds_matrix_translate(M, -n.pivot[0], -n.pivot[1], -n.pivot[2]);
lib3ds_matrix_mult(M, M, inv_matrix);
foreach (Lib3dsVertex vertex in mesh.vertices)
{
lib3ds_vector_transform(v, M, vertex);
lib3ds_vector_min(bmin, v);
lib3ds_vector_max(bmax, v);
}
}
}
break;
case Lib3dsNodeType.LIB3DS_NODE_CAMERA:
case Lib3dsNodeType.LIB3DS_NODE_CAMERA_TARGET:
if (include_cameras)
{
float[] z = new float[3], v = new float[3];
float[,] M = new float[4, 4];
lib3ds_matrix_mult(M, matrix, node.matrixNode);
lib3ds_vector_zero(z);
lib3ds_vector_transform(v, M, z);
lib3ds_vector_min(bmin, v);
lib3ds_vector_max(bmax, v);
}
break;
case Lib3dsNodeType.LIB3DS_NODE_OMNILIGHT:
case Lib3dsNodeType.LIB3DS_NODE_SPOTLIGHT:
case Lib3dsNodeType.LIB3DS_NODE_SPOTLIGHT_TARGET:
if (include_lights)
{
float[] z = new float[3], v = new float[3];
float[,] M = new float[4, 4];
lib3ds_matrix_mult(M, matrix, node.matrixNode);
lib3ds_vector_zero(z);
lib3ds_vector_transform(v, M, z);
lib3ds_vector_min(bmin, v);
lib3ds_vector_max(bmax, v);
}
break;
}
foreach (Lib3dsNode p in node.childs)
{
file_bounding_box_of_nodes_impl(p, file, include_meshes, include_cameras, include_lights, bmin, bmax, matrix);
}
}
public static void lib3ds_mesh_write(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c_n_tri_object=new Lib3dsChunk();
c_n_tri_object.chunk=Lib3dsChunks.CHK_N_TRI_OBJECT;
lib3ds_chunk_write_start(c_n_tri_object, io);
point_array_write(mesh, io);
texco_array_write(mesh, io);
if(mesh.map_type!=Lib3dsMapType.LIB3DS_MAP_NONE)
{ // ---- LIB3DS_MESH_TEXTURE_INFO ----
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_MESH_TEXTURE_INFO;
c.size=92;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, (ushort)mesh.map_type);
for(int i=0; i<2; i++) lib3ds_io_write_float(io, mesh.map_tile[i]);
lib3ds_io_write_vector(io, mesh.map_pos);
lib3ds_io_write_float(io, mesh.map_scale);
for(int i=0; i<4; i++)
{
for(int j=0; j<3; j++) lib3ds_io_write_float(io, mesh.map_matrix[i, j]);
}
for(int i=0; i<2; i++) lib3ds_io_write_float(io, mesh.map_planar_size[i]);
lib3ds_io_write_float(io, mesh.map_cylinder_height);
}
flag_array_write(mesh, io);
{
/*---- LIB3DS_MESH_MATRIX ----*/
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_MESH_MATRIX;
c.size=54;
lib3ds_chunk_write(c, io);
for(int i=0; i<4; i++)
{
for(int j=0; j<3; j++) lib3ds_io_write_float(io, mesh.matrix[i, j]);
}
}
if(mesh.color!=0)
{ // ---- LIB3DS_MESH_COLOR ----
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_MESH_COLOR;
c.size=7;
lib3ds_chunk_write(c, io);
lib3ds_io_write_byte(io, mesh.color);
}
face_array_write(file, mesh, io);
lib3ds_chunk_write_end(c_n_tri_object, io);
}
static void point_array_write(Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_POINT_ARRAY;
c.size=8+12u*mesh.nvertices;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, mesh.nvertices);
if(lib3ds_matrix_det(mesh.matrix)>=0.0f)
{
for(int i=0; i<mesh.nvertices; i++) lib3ds_io_write_vector(io, mesh.vertices[i]);
}
else
{
// Flip X coordinate of vertices if mesh matrix has negative determinant
float[,] inv_matrix=new float[4, 4], M=new float[4, 4];
float[] tmp=new float[3];
lib3ds_matrix_copy(inv_matrix, mesh.matrix);
lib3ds_matrix_inv(inv_matrix);
lib3ds_matrix_copy(M, mesh.matrix);
lib3ds_matrix_scale(M, -1.0f, 1.0f, 1.0f);
lib3ds_matrix_mult(M, M, inv_matrix);
for(int i=0; i<mesh.nvertices; i++)
{
lib3ds_vector_transform(tmp, M, mesh.vertices[i]);
lib3ds_io_write_vector(io, tmp);
}
}
}
static void texco_array_write(Lib3dsMesh mesh, Lib3dsIo io)
{
if(mesh.texcos==null) return;
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_TEX_VERTS;
c.size=8+8u*mesh.nvertices;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, mesh.nvertices);
for(int i=0; i<mesh.nvertices; i++)
{
lib3ds_io_write_float(io, mesh.texcos[i].s);
lib3ds_io_write_float(io, mesh.texcos[i].t);
}
}
// Free a mesh object and all of its resources.
//
// \param mesh Mesh object to be freed.
public static void lib3ds_mesh_free(Lib3dsMesh mesh)
{
lib3ds_mesh_resize_vertices(mesh, 0, false, false);
lib3ds_mesh_resize_faces(mesh, 0);
}
// Calculates the vertex normals corresponding to the smoothing group
// settings for each face of a mesh.
//
// \param mesh A pointer to the mesh to calculate the normals for.
// \param normals A pointer to a buffer to store the calculated
// normals. The buffer must have the size:
// 3*3*sizeof(float)*mesh.nfaces.
//
// To allocate the normal buffer do for example the following:
// \code
// Lib3dsVector *normals = malloc(3*3*sizeof(float)*mesh.nfaces);
// \endcode
//
// To access the normal of the i-th vertex of the j-th face do the
// following:
// \code
// normals[3*j+i]
// \endcode
public static void lib3ds_mesh_calculate_vertex_normals(Lib3dsMesh mesh, float[][] normals)
{
if(mesh.nfaces==0) return;
Lib3dsFaces[] fl=new Lib3dsFaces[mesh.nvertices];
Lib3dsFaces[] fa=new Lib3dsFaces[3*mesh.nfaces];
for(int i=0; i<fa.Length; i++) fa[i]=new Lib3dsFaces();
for(int i=0; i<mesh.nfaces; i++)
{
for(int j=0; j<3; j++)
{
Lib3dsFaces l=fa[3*i+j];
float[] p=new float[3], q=new float[3], n=new float[3];
float len, weight;
l.index=i;
l.next=fl[mesh.faces[i].index[j]];
fl[mesh.faces[i].index[j]]=l;
lib3ds_vector_sub(p, mesh.vertices[mesh.faces[i].index[j<2?j+1:0]], mesh.vertices[mesh.faces[i].index[j]]);
lib3ds_vector_sub(q, mesh.vertices[mesh.faces[i].index[j>0?j-1:2]], mesh.vertices[mesh.faces[i].index[j]]);
lib3ds_vector_cross(n, p, q);
len=lib3ds_vector_length(n);
if(len>0)
{
weight=(float)Math.Atan2(len, lib3ds_vector_dot(p, q));
lib3ds_vector_scalar_mul(l.normal, n, weight/len);
}
else lib3ds_vector_zero(l.normal);
}
}
for(int i=0; i<mesh.nfaces; i++)
{
Lib3dsFace f=mesh.faces[i];
for(int j=0; j<3; j++)
{
float[] n=new float[3];
Lib3dsFaces p;
Lib3dsFace pf;
Debug.Assert(mesh.faces[i].index[j]<mesh.nvertices);
if(f.smoothing_group!=0)
{
uint smoothing_group=f.smoothing_group;
lib3ds_vector_zero(n);
for(p=fl[mesh.faces[i].index[j]]; p!=null; p=p.next)
{
pf=mesh.faces[p.index];
if((pf.smoothing_group&f.smoothing_group)!=0) smoothing_group|=pf.smoothing_group;
}
for(p=fl[mesh.faces[i].index[j]]; p!=null; p=p.next)
{
pf=mesh.faces[p.index];
if((smoothing_group&pf.smoothing_group)!=0) lib3ds_vector_add(n, n, p.normal);
}
}
else lib3ds_vector_copy(n, fa[3*i+j].normal);
lib3ds_vector_normalize(n);
lib3ds_vector_copy(normals[3*i+j], n);
}
}
}
// Calculates the vertex normals corresponding to the smoothing group
// settings for each face of a mesh.
//
// \param mesh A pointer to the mesh to calculate the normals for.
// \param normals A pointer to a buffer to store the calculated
// normals. The buffer must have the size:
// 3*3*sizeof(float)*mesh.nfaces.
//
// To allocate the normal buffer do for example the following:
// \code
// Lib3dsVector *normals = malloc(3*3*sizeof(float)*mesh.nfaces);
// \endcode
//
// To access the normal of the i-th vertex of the j-th face do the
// following:
// \code
// normals[3*j+i]
// \endcode
public static void lib3ds_mesh_calculate_vertex_normals(Lib3dsMesh mesh, float[][] normals)
{
if (mesh.nfaces == 0)
{
return;
}
Lib3dsFaces[] fl = new Lib3dsFaces[mesh.nvertices];
Lib3dsFaces[] fa = new Lib3dsFaces[3 * mesh.nfaces];
for (int i = 0; i < fa.Length; i++)
{
fa[i] = new Lib3dsFaces();
}
for (int i = 0; i < mesh.nfaces; i++)
{
for (int j = 0; j < 3; j++)
{
Lib3dsFaces l = fa[3 * i + j];
float[] p = new float[3], q = new float[3], n = new float[3];
float len, weight;
l.index = i;
l.next = fl[mesh.faces[i].index[j]];
fl[mesh.faces[i].index[j]] = l;
lib3ds_vector_sub(p, mesh.vertices[mesh.faces[i].index[j < 2?j + 1:0]], mesh.vertices[mesh.faces[i].index[j]]);
lib3ds_vector_sub(q, mesh.vertices[mesh.faces[i].index[j > 0?j - 1:2]], mesh.vertices[mesh.faces[i].index[j]]);
lib3ds_vector_cross(n, p, q);
len = lib3ds_vector_length(n);
if (len > 0)
{
weight = (float)Math.Atan2(len, lib3ds_vector_dot(p, q));
lib3ds_vector_scalar_mul(l.normal, n, weight / len);
}
else
{
lib3ds_vector_zero(l.normal);
}
}
}
for (int i = 0; i < mesh.nfaces; i++)
{
Lib3dsFace f = mesh.faces[i];
for (int j = 0; j < 3; j++)
{
float[] n = new float[3];
Lib3dsFaces p;
Lib3dsFace pf;
Debug.Assert(mesh.faces[i].index[j] < mesh.nvertices);
if (f.smoothing_group != 0)
{
uint smoothing_group = f.smoothing_group;
lib3ds_vector_zero(n);
for (p = fl[mesh.faces[i].index[j]]; p != null; p = p.next)
{
pf = mesh.faces[p.index];
if ((pf.smoothing_group & f.smoothing_group) != 0)
{
smoothing_group |= pf.smoothing_group;
}
}
for (p = fl[mesh.faces[i].index[j]]; p != null; p = p.next)
{
pf = mesh.faces[p.index];
if ((smoothing_group & pf.smoothing_group) != 0)
{
lib3ds_vector_add(n, n, p.normal);
}
}
}
else
{
lib3ds_vector_copy(n, fa[3 * i + j].normal);
}
lib3ds_vector_normalize(n);
lib3ds_vector_copy(normals[3 * i + j], n);
}
}
}
public static void lib3ds_mesh_read(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c=new Lib3dsChunk();
Lib3dsChunks chunk;
lib3ds_chunk_read_start(c, Lib3dsChunks.CHK_N_TRI_OBJECT, io);
while((chunk=lib3ds_chunk_read_next(c, io))!=0)
{
switch(chunk)
{
case Lib3dsChunks.CHK_MESH_MATRIX:
lib3ds_matrix_identity(mesh.matrix);
for(int i=0; i<4; i++)
{
for(int j=0; j<3; j++) mesh.matrix[i, j]=lib3ds_io_read_float(io);
}
break;
case Lib3dsChunks.CHK_MESH_COLOR:
mesh.color=lib3ds_io_read_byte(io);
break;
case Lib3dsChunks.CHK_POINT_ARRAY:
{
ushort nvertices=lib3ds_io_read_word(io);
lib3ds_mesh_resize_vertices(mesh, nvertices, mesh.texcos!=null, mesh.vflags!=null);
for(int i=0; i<mesh.nvertices; i++) lib3ds_io_read_vector(io, mesh.vertices[i]);
}
break;
case Lib3dsChunks.CHK_POINT_FLAG_ARRAY:
{
ushort nflags=lib3ds_io_read_word(io);
ushort nvertices=(mesh.nvertices>=nflags)?mesh.nvertices:nflags;
lib3ds_mesh_resize_vertices(mesh, nvertices, mesh.texcos!=null, true);
for(int i=0; i<nflags; i++) mesh.vflags[i]=lib3ds_io_read_word(io);
}
break;
case Lib3dsChunks.CHK_FACE_ARRAY:
lib3ds_chunk_read_reset(c, io);
face_array_read(file, mesh, io);
break;
case Lib3dsChunks.CHK_MESH_TEXTURE_INFO:
//FIXME: mesh.map_type = lib3ds_io_read_word(io);
for(int i=0; i<2; i++) mesh.map_tile[i]=lib3ds_io_read_float(io);
for(int i=0; i<3; i++) mesh.map_pos[i]=lib3ds_io_read_float(io);
mesh.map_scale=lib3ds_io_read_float(io);
lib3ds_matrix_identity(mesh.map_matrix);
for(int i=0; i<4; i++)
{
for(int j=0; j<3; j++) mesh.map_matrix[i, j]=lib3ds_io_read_float(io);
}
for(int i=0; i<2; i++) mesh.map_planar_size[i]=lib3ds_io_read_float(io);
mesh.map_cylinder_height=lib3ds_io_read_float(io);
break;
case Lib3dsChunks.CHK_TEX_VERTS:
{
ushort ntexcos=lib3ds_io_read_word(io);
ushort nvertices=(mesh.nvertices>=ntexcos)?mesh.nvertices:ntexcos;
if(mesh.texcos==null)
{
lib3ds_mesh_resize_vertices(mesh, nvertices, true, mesh.vflags!=null);
}
for(int i=0; i<ntexcos; i++)
{
mesh.texcos[i].s=lib3ds_io_read_float(io);
mesh.texcos[i].t=lib3ds_io_read_float(io);
}
break;
}
default: lib3ds_chunk_unknown(chunk, io); break;
}
}
if(lib3ds_matrix_det(mesh.matrix)<0.0)
{
// Flip X coordinate of vertices if mesh matrix has negative determinant
float[,] inv_matrix=new float[4, 4], M=new float[4, 4];
float[] tmp=new float[3];
lib3ds_matrix_copy(inv_matrix, mesh.matrix);
lib3ds_matrix_inv(inv_matrix);
lib3ds_matrix_copy(M, mesh.matrix);
lib3ds_matrix_scale(M, -1.0f, 1.0f, 1.0f);
lib3ds_matrix_mult(M, M, inv_matrix);
for(int i=0; i<mesh.nvertices; i++)
{
lib3ds_vector_transform(tmp, M, mesh.vertices[i]);
lib3ds_vector_copy(mesh.vertices[i], tmp);
}
}
lib3ds_chunk_read_end(c, io);
}
static void face_array_read(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c = new Lib3dsChunk();
Lib3dsChunks chunk;
lib3ds_chunk_read_start(c, Lib3dsChunks.CHK_FACE_ARRAY, io);
lib3ds_mesh_resize_faces(mesh, 0);
ushort nfaces = lib3ds_io_read_word(io);
if (nfaces != 0)
{
lib3ds_mesh_resize_faces(mesh, nfaces);
for (int i = 0; i < nfaces; i++)
{
mesh.faces[i].index[0] = lib3ds_io_read_word(io);
mesh.faces[i].index[1] = lib3ds_io_read_word(io);
mesh.faces[i].index[2] = lib3ds_io_read_word(io);
mesh.faces[i].flags = lib3ds_io_read_word(io);
}
lib3ds_chunk_read_tell(c, io);
while ((chunk = lib3ds_chunk_read_next(c, io)) != 0)
{
switch (chunk)
{
case Lib3dsChunks.CHK_MSH_MAT_GROUP:
string name = lib3ds_io_read_string(io, 64);
int material = lib3ds_file_material_by_name(file, name);
ushort n = lib3ds_io_read_word(io);
for (int i = 0; i < n; i++)
{
ushort index = lib3ds_io_read_word(io);
if (index < mesh.nfaces)
{
mesh.faces[index].material = material;
}
else
{
// TODO warning
}
}
break;
case Lib3dsChunks.CHK_SMOOTH_GROUP:
for (int i = 0; i < mesh.nfaces; i++)
{
mesh.faces[i].smoothing_group = lib3ds_io_read_dword(io);
}
break;
case Lib3dsChunks.CHK_MSH_BOXMAP:
mesh.box_front = lib3ds_io_read_string(io, 64);
mesh.box_back = lib3ds_io_read_string(io, 64);
mesh.box_left = lib3ds_io_read_string(io, 64);
mesh.box_right = lib3ds_io_read_string(io, 64);
mesh.box_top = lib3ds_io_read_string(io, 64);
mesh.box_bottom = lib3ds_io_read_string(io, 64);
break;
default: lib3ds_chunk_unknown(chunk, io); break;
}
}
}
lib3ds_chunk_read_end(c, io);
}
/// <summary>
/// Draw a mesh.
/// </summary>
/// <param name="gl">OpenGL handler.</param>
/// <param name="buildingObj">The mesh.</param>BuildingObjectLib3DS _object,
private void DrawMesh(OpenGL gl, Lib3dsMesh thisMesh, Hashtable textures, List<Lib3dsMaterial> matrials, DrawType type)
{
if (thisMesh == null || thisMesh.nfaces == 0)
return;
// Draw all the faces in this mesh.
for (int j = 0; j < thisMesh.faces.Count; j++)
{
Lib3dsFace thisFace = thisMesh.faces[j];
float transparency = matrials[thisFace.material].transparency;
//float[] fogColor = new float[4] { 0.5f, 0.5f, 0.5f, 1.0f };
//float[] LightAmbient = new float[4] { 0.5f, 0.5f, 0.5f, 1.0f };
//float[] LightDiffuse = new float[4] { 1.0f, 1.0f, 1.0f, 1.0f };
//float[] LightPosition = new float[4] { 0.0f, 0.0f, 2.0f, 1.0f };
switch (type)
{
case DrawType.WireFrame:
gl.PolygonMode(OpenGL.GL_FRONT_AND_BACK, OpenGL.GL_LINE);
IsDrawTexture = false;
gl.Color(0.5f, 0.5f, 0.5f, 0.5f);
gl.LineWidth(1.5f);
break;
case DrawType.Full:
IsDrawTexture = BindTexture(gl, textures, matrials[thisFace.material].name);
gl.PolygonMode(OpenGL.GL_FRONT_AND_BACK, OpenGL.GL_FILL);
break;
case DrawType.Face:
gl.PolygonMode(OpenGL.GL_FRONT_AND_BACK, OpenGL.GL_FILL);
IsDrawTexture = false;
break;
case DrawType.Translucent:
IsDrawTexture = BindTexture(gl, textures, matrials[thisFace.material].name);
gl.PolygonMode(OpenGL.GL_FRONT_AND_BACK, OpenGL.GL_FILL);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(OpenGL.GL_SRC_ALPHA,OpenGL.GL_ONE_MINUS_SRC_ALPHA);
//gl.Enable(OpenGL.GL_TEXTURE_2D); // Enable Texture Mapping
//gl.ShadeModel(OpenGL.GL_SMOOTH); // Enable Smooth Shading
//gl.ClearColor(0.5f,0.5f,0.5f,1.0f); // We'll Clear To The Color Of The Fog
//gl.ClearDepth(1.0f); // Depth Buffer Setup
//gl.Enable(OpenGL.GL_DEPTH_TEST); // Enables Depth Testing
//gl.DepthFunc(OpenGL.GL_LEQUAL); // The Type Of Depth Testing To Do
//gl.Hint(OpenGL.GL_PERSPECTIVE_CORRECTION_HINT, OpenGL.GL_NICEST); // Really Nice Perspective Calculations
//gl.Light(OpenGL.GL_LIGHT1, OpenGL.GL_AMBIENT, LightAmbient); // Setup The Ambient Light
//gl.Light(OpenGL.GL_LIGHT1, OpenGL.GL_DIFFUSE, LightDiffuse); // Setup The Diffuse Light
//gl.Light(OpenGL.GL_LIGHT1, OpenGL.GL_POSITION,LightPosition); // Position The Light
//gl.Enable(OpenGL.GL_LIGHT1);
//gl.Fog(OpenGL.GL_FOG_COLOR, fogColor);//设置雾颜色，f是一个指定颜色的数组float f[4]
//gl.Fog(OpenGL.GL_FOG_DENSITY, 0.85f); // 设置雾的密度
//gl.Hint(OpenGL.GL_FOG_HINT, OpenGL.GL_DONT_CARE); // 设置系统如何计算雾气
//gl.Fog(OpenGL.GL_FOG_START, 0.01f);//设置雾从多远开始
//gl.Fog(OpenGL.GL_FOG_END, 100.0f);//设置雾从多远结束
//gl.Fog(OpenGL.GL_FOG_MODE, OpenGL.GL_LINEAR);//设置使用哪种雾，共有三中雾化模式
//gl.Enable(OpenGL.GL_FOG);//打开雾效果
transparency = 0.2f;
break;
default:
gl.PolygonMode(OpenGL.GL_FRONT_AND_BACK, OpenGL.GL_FILL);
IsDrawTexture = false;
break;
}
if (type != DrawType.WireFrame)
{
gl.Color(matrials[thisFace.material].diffuse[0], matrials[thisFace.material].diffuse[1],
matrials[thisFace.material].diffuse[2], matrials[thisFace.material].transparency);
}
gl.Begin(OpenGL.GL_TRIANGLES);
for (int k = 0; k != 3; ++k)
{
int index = thisFace.index[k];
if (IsDrawTexture)
gl.TexCoord(thisMesh.texcos[index].s, thisMesh.texcos[index].t);
gl.Vertex(thisMesh.vertices[index].x / 20, thisMesh.vertices[index].z / 20, -thisMesh.vertices[index].y / 20);
}
gl.End();
if(type == DrawType.Translucent)
gl.Disable(OpenGL.GL_BLEND);
}
}
// Free a mesh object and all of its resources.
//
// \param mesh Mesh object to be freed.
public static void lib3ds_mesh_free(Lib3dsMesh mesh)
{
lib3ds_mesh_resize_vertices(mesh, 0, false, false);
lib3ds_mesh_resize_faces(mesh, 0);
}
public static Lib3dsMeshInstanceNode lib3ds_node_new_mesh_instance(Lib3dsMesh mesh, string instance_name, float[] pos0, float[] scl0, float[] rot0)
{
Lib3dsNode node=lib3ds_node_new(Lib3dsNodeType.LIB3DS_NODE_MESH_INSTANCE);
if(mesh!=null) node.name=mesh.name;
else node.name="$$$DUMMY";
Lib3dsMeshInstanceNode n=(Lib3dsMeshInstanceNode)node;
if(instance_name!=null) n.instance_name=instance_name;
else n.instance_name="";
lib3ds_track_resize(n.pos_track, 1);
if(pos0!=null) lib3ds_vector_copy(n.pos_track.keys[0].value, pos0);
lib3ds_track_resize(n.scl_track, 1);
if(scl0!=null) lib3ds_vector_copy(n.scl_track.keys[0].value, scl0);
else lib3ds_vector_make(n.scl_track.keys[0].value, 1, 1, 1);
lib3ds_track_resize(n.rot_track, 1);
if(rot0!=null) for(int i=0; i<4; i++) n.rot_track.keys[0].value[i]=rot0[i];
else for(int i=0; i<4; i++) n.rot_track.keys[0].value[i]=0;
return n;
}
public static void lib3ds_mesh_resize_vertices(Lib3dsMesh mesh, ushort nvertices, bool use_texcos, bool use_flags)
{
Debug.Assert(mesh != null);
if (nvertices > 0)
{
if (mesh.vertices == null)
{
mesh.vertices = new List <Lib3dsVertex>();
}
while (mesh.vertices.Count < nvertices)
{
mesh.vertices.Add(new Lib3dsVertex());
}
if (mesh.vertices.Count > nvertices)
{
mesh.vertices.RemoveRange(nvertices, mesh.vertices.Count - nvertices);
}
}
else
{
mesh.vertices = null;
}
ushort tmp = (ushort)(use_texcos?nvertices:0);
if (tmp > 0)
{
if (mesh.texcos == null)
{
mesh.texcos = new List <Lib3dsTexturecoordinate>();
}
while (mesh.texcos.Count < tmp)
{
mesh.texcos.Add(new Lib3dsTexturecoordinate());
}
if (mesh.texcos.Count > tmp)
{
mesh.texcos.RemoveRange(tmp, mesh.texcos.Count - tmp);
}
}
else
{
mesh.texcos = null;
}
tmp = (ushort)(use_flags?nvertices:0);
if (tmp > 0)
{
if (mesh.vflags == null)
{
mesh.vflags = new List <ushort>();
}
while (mesh.vflags.Count < tmp)
{
mesh.vflags.Add(0);
}
if (mesh.vflags.Count > tmp)
{
mesh.vflags.RemoveRange(tmp, mesh.vflags.Count - tmp);
}
}
else
{
mesh.vflags = null;
}
mesh.nvertices = nvertices;
}
public static void lib3ds_mesh_calculate_face_normals(Lib3dsMesh mesh, float[][] face_normals)
{
if(mesh.nfaces==0) return;
for(int i=0; i<mesh.nfaces; i++)
{
lib3ds_vector_normal(face_normals[i], mesh.vertices[mesh.faces[i].index[0]], mesh.vertices[mesh.faces[i].index[1]], mesh.vertices[mesh.faces[i].index[2]]);
}
}
static void face_array_write(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
if (mesh.nfaces == 0)
{
return;
}
Lib3dsChunk c_face_array = new Lib3dsChunk();
c_face_array.chunk = Lib3dsChunks.CHK_FACE_ARRAY;
lib3ds_chunk_write_start(c_face_array, io);
lib3ds_io_write_word(io, mesh.nfaces);
for (int i = 0; i < mesh.nfaces; i++)
{
lib3ds_io_write_word(io, mesh.faces[i].index[0]);
lib3ds_io_write_word(io, mesh.faces[i].index[1]);
lib3ds_io_write_word(io, mesh.faces[i].index[2]);
lib3ds_io_write_word(io, mesh.faces[i].flags);
}
{
// ---- MSH_CHK_MAT_GROUP ----
Lib3dsChunk c = new Lib3dsChunk();
ushort num;
bool[] matf = new bool[mesh.nfaces];
for (ushort i = 0; i < mesh.nfaces; i++)
{
if (!matf[i] && (mesh.faces[i].material >= 0) && (mesh.faces[i].material < file.materials.Count))
{
matf[i] = true;
num = 1;
for (ushort j = (ushort)(i + 1); j < mesh.nfaces; j++)
{
if (mesh.faces[i].material == mesh.faces[j].material)
{
num++;
}
}
c.chunk = Lib3dsChunks.CHK_MSH_MAT_GROUP;
c.size = (uint)(6 + file.materials[mesh.faces[i].material].name.Length + 1 + 2 + 2 * num);
lib3ds_chunk_write(c, io);
lib3ds_io_write_string(io, file.materials[mesh.faces[i].material].name);
lib3ds_io_write_word(io, num);
lib3ds_io_write_word(io, i);
for (ushort j = (ushort)(i + 1); j < mesh.nfaces; j++)
{
if (mesh.faces[i].material == mesh.faces[j].material)
{
lib3ds_io_write_word(io, j);
matf[j] = true;
}
}
}
}
}
{
// ---- SMOOTH_GROUP ----
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_SMOOTH_GROUP;
c.size = 6 + 4u * mesh.nfaces;
lib3ds_chunk_write(c, io);
for (int i = 0; i < mesh.nfaces; i++)
{
lib3ds_io_write_dword(io, mesh.faces[i].smoothing_group);
}
}
if (mesh.box_front.Length > 0 || mesh.box_back.Length > 0 || mesh.box_left.Length > 0 || mesh.box_right.Length > 0 || mesh.box_top.Length > 0 || mesh.box_bottom.Length > 0)
{ // ---- MSH_BOXMAP ----
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_MSH_BOXMAP;
lib3ds_chunk_write_start(c, io);
lib3ds_io_write_string(io, mesh.box_front);
lib3ds_io_write_string(io, mesh.box_back);
lib3ds_io_write_string(io, mesh.box_left);
lib3ds_io_write_string(io, mesh.box_right);
lib3ds_io_write_string(io, mesh.box_top);
lib3ds_io_write_string(io, mesh.box_bottom);
lib3ds_chunk_write_end(c, io);
}
lib3ds_chunk_write_end(c_face_array, io);
}
public static void lib3ds_file_insert_mesh(Lib3dsFile file, Lib3dsMesh mesh, int index)
{
Debug.Assert(file!=null);
if(index<0) file.meshes.Add(mesh);
else file.meshes.Insert(index, mesh);
}
public static void lib3ds_mesh_write(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c_n_tri_object = new Lib3dsChunk();
c_n_tri_object.chunk = Lib3dsChunks.CHK_N_TRI_OBJECT;
lib3ds_chunk_write_start(c_n_tri_object, io);
point_array_write(mesh, io);
texco_array_write(mesh, io);
if (mesh.map_type != Lib3dsMapType.LIB3DS_MAP_NONE)
{ // ---- LIB3DS_MESH_TEXTURE_INFO ----
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_MESH_TEXTURE_INFO;
c.size = 92;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, (ushort)mesh.map_type);
for (int i = 0; i < 2; i++)
{
lib3ds_io_write_float(io, mesh.map_tile[i]);
}
lib3ds_io_write_vector(io, mesh.map_pos);
lib3ds_io_write_float(io, mesh.map_scale);
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 3; j++)
{
lib3ds_io_write_float(io, mesh.map_matrix[i, j]);
}
}
for (int i = 0; i < 2; i++)
{
lib3ds_io_write_float(io, mesh.map_planar_size[i]);
}
lib3ds_io_write_float(io, mesh.map_cylinder_height);
}
flag_array_write(mesh, io);
{
/*---- LIB3DS_MESH_MATRIX ----*/
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_MESH_MATRIX;
c.size = 54;
lib3ds_chunk_write(c, io);
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 3; j++)
{
lib3ds_io_write_float(io, mesh.matrix[i, j]);
}
}
}
if (mesh.color != 0)
{ // ---- LIB3DS_MESH_COLOR ----
Lib3dsChunk c = new Lib3dsChunk();
c.chunk = Lib3dsChunks.CHK_MESH_COLOR;
c.size = 7;
lib3ds_chunk_write(c, io);
lib3ds_io_write_byte(io, mesh.color);
}
face_array_write(file, mesh, io);
lib3ds_chunk_write_end(c_n_tri_object, io);
}
static void face_array_read(Lib3dsFile file, Lib3dsMesh mesh, Lib3dsIo io)
{
Lib3dsChunk c=new Lib3dsChunk();
Lib3dsChunks chunk;
lib3ds_chunk_read_start(c, Lib3dsChunks.CHK_FACE_ARRAY, io);
lib3ds_mesh_resize_faces(mesh, 0);
ushort nfaces=lib3ds_io_read_word(io);
if(nfaces!=0)
{
lib3ds_mesh_resize_faces(mesh, nfaces);
for(int i=0; i<nfaces; i++)
{
mesh.faces[i].index[0]=lib3ds_io_read_word(io);
mesh.faces[i].index[1]=lib3ds_io_read_word(io);
mesh.faces[i].index[2]=lib3ds_io_read_word(io);
mesh.faces[i].flags=lib3ds_io_read_word(io);
}
lib3ds_chunk_read_tell(c, io);
while((chunk=lib3ds_chunk_read_next(c, io))!=0)
{
switch(chunk)
{
case Lib3dsChunks.CHK_MSH_MAT_GROUP:
string name=lib3ds_io_read_string(io, 64);
int material=lib3ds_file_material_by_name(file, name);
ushort n=lib3ds_io_read_word(io);
for(int i=0; i<n; i++)
{
ushort index=lib3ds_io_read_word(io);
if(index<mesh.nfaces) mesh.faces[index].material=material;
else
{
// TODO warning
}
}
break;
case Lib3dsChunks.CHK_SMOOTH_GROUP:
for(int i=0; i<mesh.nfaces; i++) mesh.faces[i].smoothing_group=lib3ds_io_read_dword(io);
break;
case Lib3dsChunks.CHK_MSH_BOXMAP:
mesh.box_front=lib3ds_io_read_string(io, 64);
mesh.box_back=lib3ds_io_read_string(io, 64);
mesh.box_left=lib3ds_io_read_string(io, 64);
mesh.box_right=lib3ds_io_read_string(io, 64);
mesh.box_top=lib3ds_io_read_string(io, 64);
mesh.box_bottom=lib3ds_io_read_string(io, 64);
break;
default: lib3ds_chunk_unknown(chunk, io); break;
}
}
}
lib3ds_chunk_read_end(c, io);
}
public MyObject(Lib3dsMesh _node, Lib3dsFile _model)
{
this.node = _node;
this.model = _model;
if (_node.faces == null || _node.faces.Count == 0)
{
this.Flag = false;
}
else
{
this.Flag = true;
this.Normalizes = new Lib3dsVertex[_node.faces.Count];
for (int i = 0; i < _node.faces.Count; i++)
{
Lib3dsFace face = _node.faces[i];
Lib3dsVertex Point1 = _node.vertices[face.index[0]];
Lib3dsVertex Point2 = _node.vertices[face.index[1]];
Lib3dsVertex Point3 = _node.vertices[face.index[2]];
this.Normalizes[i] = CreateNormalize(Point1, Point2, Point3);
}
}
}
static void flag_array_write(Lib3dsMesh mesh, Lib3dsIo io)
{
if(mesh.vflags==null) return;
Lib3dsChunk c=new Lib3dsChunk();
c.chunk=Lib3dsChunks.CHK_POINT_FLAG_ARRAY;
c.size=8+2u*mesh.nvertices;
lib3ds_chunk_write(c, io);
lib3ds_io_write_word(io, mesh.nvertices);
for(int i=0; i<mesh.nvertices; i++) lib3ds_io_write_word(io, mesh.vflags[i]);
}
static void mesh_dump(Lib3dsMesh mesh)
{
Debug.Assert(mesh!=null);
Console.WriteLine(" {0} vertices={1} faces={2}", mesh.name, mesh.nvertices, mesh.nfaces);
Console.WriteLine(" matrix:");
matrix_dump(mesh.matrix);
Lib3dsVertex p=new Lib3dsVertex();
Console.WriteLine(" vertices (x, y, z, u, v):");
for(int i=0; i<mesh.nvertices; i++)
{
LIB3DS.lib3ds_vector_copy(p, mesh.vertices[i]);
Console.Write(" {0,10:F5} {1,10:F5} {2,10:F5}", p.x, p.y, p.z);
if(mesh.texcos!=null) Console.Write(" {0,10:F5} {1,10:F5}", mesh.texcos[i].s, mesh.texcos[i].t);
Console.WriteLine();
}
Console.WriteLine(" facelist:");
for(int i=0; i<mesh.nfaces; i++)
Console.WriteLine(" {0,4} {1,4} {2,4} flags:{3:X} smoothing:{4:X} material:\"{5}\"\n", mesh.faces[i].index[0], mesh.faces[i].index[1], mesh.faces[i].index[2], mesh.faces[i].flags, mesh.faces[i].smoothing_group, mesh.faces[i].material);
}
// Find the bounding box of a mesh object.
//
// \param mesh The mesh object
// \param bmin Returned bounding box
// \param bmax Returned bounding box
public static void lib3ds_mesh_bounding_box(Lib3dsMesh mesh, float[] bmin, float[] bmax)
{
bmin[0]=bmin[1]=bmin[2]=float.MaxValue;
bmax[0]=bmax[1]=bmax[2]=-float.MaxValue;
for(int i=0; i<mesh.nvertices; i++)
{
lib3ds_vector_min(bmin, mesh.vertices[i]);
lib3ds_vector_max(bmax, mesh.vertices[i]);
}
}
