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 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);
}
}
}
public static void AddMeshTo3DS(Lib3dsFile res, PSKFile f, Matrix m)
{
Lib3dsMesh mesh = new Lib3dsMesh();
string name = "Box00" + res.meshes.Count;
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);
}
public bool Parse3DSMesh(Lib3dsFile file, Lib3dsMesh mesh)
{
foreach (Lib3dsVertex vert in mesh.vertices)
{
Vertices.Add(new P3DVertex(vert.x, vert.z, vert.y));
}
foreach (Lib3dsFace face in mesh.faces)
{
if (face.index.Length > 3)
{
//MessageBox.Show("SHIT.");
}
TexturePolygon texPoly = new TexturePolygon();
texPoly.Texture = GetTextureFrom3dsID(file, face.material).Name;
texPoly.Material = MaterialFrom3DS(file.materials[face.material], (face.smoothing_group != 0));
texPoly.SGFrom3DS = face.smoothing_group;
texPoly.U1 = mesh.texcos[face.index[0]].s;
texPoly.U2 = mesh.texcos[face.index[2]].s;
texPoly.U3 = mesh.texcos[face.index[1]].s;
texPoly.V1 = mesh.texcos[face.index[0]].t;
texPoly.V2 = mesh.texcos[face.index[2]].t;
texPoly.V3 = mesh.texcos[face.index[1]].t;
texPoly.P1 = Convert.ToInt16(face.index[0]);
texPoly.P2 = Convert.ToInt16(face.index[2]);
texPoly.P3 = Convert.ToInt16(face.index[1]);
Polygons.Add(texPoly);
}
Name = mesh.name;
Application.Current.Dispatcher.BeginInvoke((Action)(() => ((P3DElementView)TreeItem.Header).content.Text = Name));
Size = 1;
Flags = FlagFrom3DSName(mesh.name);
NumVertices = Convert.ToInt16(Vertices.Count);
NumPolys = Convert.ToInt16(Polygons.Count);
LocalPos = new P3DVertex(mesh.matrix[3, 0], mesh.matrix[3, 1], mesh.matrix[3, 2]);
Length = 0;
Height = 0;
Depth = 0;
return(true);
}
/// <summary>
/// Draw a object.
/// </summary>
/// <param name="gl">OpenGL handler.</param>
/// <param name="buildingObj">The object.</param>
private void DrawObject(OpenGL gl, BuildingObjectLib3DS buildingObj, DrawType type)
{
Lib3dsMeshInstanceNode thisMeshInst = buildingObj.Object;
if (thisMeshInst.childs.Count == 0)
{
// Maybe this object only have one mesh.
Lib3dsMesh thisMesh = FindLib3dsMeshByName(thisMeshInst.name, buildingObj.Model.meshes);
DrawMesh(gl, thisMesh, buildingObj.Textures, buildingObj.Model.materials, type);
}
else
{
// Draw all the meshes in this object.
foreach (Lib3dsNode node in thisMeshInst.childs)
{
Lib3dsMesh thisMesh = FindLib3dsMeshByName(node.name, buildingObj.Model.meshes);
DrawMesh(gl, thisMesh, buildingObj.Textures, buildingObj.Model.materials, type);
}
}
}
/// <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);
}
}
}
public static void ExportP3D(P3D p3d, string path)
{
Lib3dsFile file = LIB3DS.lib3ds_file_new();
//file.frames = 0;
// Lib3dsMaterial mat = LIB3DS.lib3ds_material_new("c_white");
// //LIB3DS.lib3ds_file_insert_material(file, mat, -1);
// mat.diffuse[0] = 1;
// mat.diffuse[1] = 1;
// mat.diffuse[2] = 1;
foreach (Mesh P3Dmesh in p3d.MeshesChunk.Meshes)
{
Lib3dsMesh mesh = LIB3DS.lib3ds_mesh_new(P3Dmesh.Name);
Lib3dsMeshInstanceNode inst;
LIB3DS.lib3ds_file_insert_mesh(file, mesh, -1);
LIB3DS.lib3ds_mesh_resize_vertices(mesh, (ushort)P3Dmesh.NumVertices, true, false);
for (int i = 0; i < P3Dmesh.NumVertices; i++)
{
mesh.vertices[i].x = P3Dmesh.Vertices[i].x;
mesh.vertices[i].z = P3Dmesh.Vertices[i].y;
mesh.vertices[i].y = P3Dmesh.Vertices[i].z;
mesh.texcos[i].s = findVerticeU(i, P3Dmesh);
mesh.texcos[i].t = findVerticeV(i, P3Dmesh);
}
LIB3DS.lib3ds_mesh_resize_faces(mesh, (ushort)P3Dmesh.NumPolys);
for (int i = 0; i < P3Dmesh.NumPolys; i++)
{
mesh.faces[i].index[2] = (ushort)P3Dmesh.Polygons[i].P1;
mesh.faces[i].index[1] = (ushort)P3Dmesh.Polygons[i].P2;
mesh.faces[i].index[0] = (ushort)P3Dmesh.Polygons[i].P3;
mesh.faces[i].material = _3dsMaterials.Instance.GetMaterial(P3Dmesh.Polygons[i].Texture, P3Dmesh.Polygons[i].Material, file);
mesh.faces[i].smoothing_group = (uint)1;
}
float[] pos = { P3Dmesh.LocalPos.x, P3Dmesh.LocalPos.z, P3Dmesh.LocalPos.y };
inst = LIB3DS.lib3ds_node_new_mesh_instance(mesh, String.Empty, pos, null, null);
LIB3DS.lib3ds_file_append_node(file, inst, null);
}
foreach (Light p3dlight in p3d.LightsChunk.Lights)
{
Lib3dsLight light = LIB3DS.lib3ds_light_new(p3dlight.Name);
LIB3DS.lib3ds_file_insert_light(file, light, -1);
light.color[0] = Convert.ToSingle(p3dlight.GetColorRed()) / 255;
light.color[1] = Convert.ToSingle(p3dlight.GetColorGreen()) / 255;
light.color[2] = Convert.ToSingle(p3dlight.GetColorBlue()) / 255;
float[] pos = { p3dlight.Position.x, p3dlight.Position.z, p3dlight.Position.y };
light.position = pos;
light.inner_range = p3dlight.Radius;
light.multiplier = 1.5f;
Lib3dsOmnilightNode inst = LIB3DS.lib3ds_node_new_omnilight(light);
LIB3DS.lib3ds_file_append_node(file, inst, null);
}
if (!LIB3DS.lib3ds_file_save(file, path))
{
MessageBox.Show("ERROR: Saving 3ds file failed!");
}
LIB3DS.lib3ds_file_free(file);
}
/// <summary>
/// Calculate this object 's Location
/// </summary>
public void CalculateLocation()
{
// If this object just contain one mesh
if (this.Type != BuildingObjectType.Outside &&
this.Type != BuildingObjectType.Object)
{
foreach (BuildingObjectLib3DS child in Childs.Values)
{
child.CalculateLocation();
this.Coordinate.x += child.Coordinate.x;
this.Coordinate.y += child.Coordinate.y;
this.Coordinate.z += child.Coordinate.z;
}
this.Coordinate.x /= Childs.Count;
this.Coordinate.y /= Childs.Count;
this.Coordinate.z /= Childs.Count;
}
// Maybe not just one mesh
else
{
int allCount = 0;
// If have children then calculate childre.
if (Object.childs.Count != 0)
{
foreach (Lib3dsNode node in Object.childs)
{
Lib3dsMesh mesh = FindLib3dsMeshByName(node.name, Model.meshes);
if (mesh != null)
{
foreach (Lib3dsVertex vertex in mesh.vertices)
{
this.Coordinate.x += vertex.x;
this.Coordinate.y += vertex.y;
this.Coordinate.z += vertex.z;
allCount++;
}
}
}
}
// If do not have children, then calculate itself.
else
{
Lib3dsMesh mesh = FindLib3dsMeshByName(Object.name,
Model.meshes);
if (mesh != null)
{
foreach (Lib3dsVertex vertex in mesh.vertices)
{
this.Coordinate.x += vertex.x;
this.Coordinate.y += vertex.y;
this.Coordinate.z += vertex.z;
allCount++;
}
}
}
this.Coordinate.x /= allCount;
this.Coordinate.y /= allCount;
this.Coordinate.z /= allCount;
}
this.Coordinate.x /= 20;
this.Coordinate.y /= 20;
this.Coordinate.z /= 20;
}
//写3DS文件
protected virtual bool writeToFile()
{
if (mDbVertices == null || mDbTextureCoors == null || uFacesIndex == null)
{
return(false);
}
//新建LIB3DS文件对象
Lib3dsFile file = LIB3DS.lib3ds_file_new();
file.frames = 360;
//新建网格节点
Lib3dsMesh mesh = LIB3DS.lib3ds_mesh_new("mesh");
Lib3dsMeshInstanceNode inst;
LIB3DS.lib3ds_file_insert_mesh(file, mesh, -1);
//一、将顶点写入网格
int nVertices = mDbVertices.GetLength(0);
LIB3DS.lib3ds_mesh_resize_vertices(mesh, (ushort)nVertices, true, false);
for (int i = 0; i < nVertices; i++)
{
Lib3dsVertex vertexTmp = new Lib3dsVertex(mDbVertices[i, 0], mDbVertices[i, 1], mDbVertices[i, 2]);
LIB3DS.lib3ds_vector_copy(mesh.vertices[i], vertexTmp);
//将纹理坐标写入网格
mesh.texcos[i] = new Lib3dsTexturecoordinate(mDbTextureCoors[i, 0], mDbTextureCoors[i, 1]);
}
//二、将纹理信息写入文件
Lib3dsMaterial mat = LIB3DS.lib3ds_material_new("material1");
LIB3DS.lib3ds_file_insert_material(file, mat, -1);
//如果没有指定纹理，则默认为灰色材质
if (String.IsNullOrEmpty(mSzTextureFilename))
{
mat.diffuse[0] = 0.5f;
mat.diffuse[1] = 0.5f;
mat.diffuse[2] = 0.5f;
}
else
{
mat.texture1_map.name = mSzTextureFilename;
mat.texture1_map.percent = 1.0f;
}
//三、将三角化后的面的顶点索引号写入网格
int nFaces = uFacesIndex.GetLength(0);
LIB3DS.lib3ds_mesh_resize_faces(mesh, (ushort)nFaces);
for (int i = 0; i < nFaces; i++)
{
for (int j = 0; j < 3; j++)
{
mesh.faces[i].index[j] = uFacesIndex[i, j];
}
//指定每个三角化后的面的材质
mesh.faces[i].material = 0;
}
inst = LIB3DS.lib3ds_node_new_mesh_instance(mesh, "01", null, null, null);
LIB3DS.lib3ds_file_append_node(file, inst, null);
if (!LIB3DS.lib3ds_file_save(file, mSzOutputFilename))
{
LIB3DS.lib3ds_file_free(file);
return(false);
}
LIB3DS.lib3ds_file_free(file);
return(true);
}
