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);
}
/// <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);
}
}
}
