/// <summary>
/// Loads an OBJ file from a stream.
/// </summary>
/// <param name="stream">A stream with OBJ file data.</param>
private static TriMesh LoadObjStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
ObjFileProcessorState state = new ObjFileProcessorState();
string line;
while ((line = sr.ReadLine()) != null)
{
ProcessObjLine(mesh, line, state);
}
if (state.VertexTextureCoords.Count == mesh.Vertices.Count)
{
for (int i = 0; i < mesh.Vertices.Count; i++)
{
mesh.Vertices[i].Traits.UV = state.VertexTextureCoords[i];
}
}
mesh.TrimExcess();
return(mesh);
}
public static TriMesh Clone(TriMesh mesh)
{
TriMesh newMesh = new TriMesh();
for (int i = 0; i < mesh.Vertices.Count; i++)
{
VertexTraits traits = new VertexTraits(mesh.Vertices[i].Traits.Position.x,
mesh.Vertices[i].Traits.Position.y,
mesh.Vertices[i].Traits.Position.z);
newMesh.Vertices.Add(traits);
}
TriMesh.Vertex[] faceVetices = new TriMesh.Vertex[3];
for (int i = 0; i < mesh.Faces.Count; i++)
{
int faceVertexIndex1 = mesh.Faces[i].GetVertex(0).Index;
int faceVertexIndex2 = mesh.Faces[i].GetVertex(1).Index;
int faceVertexIndex3 = mesh.Faces[i].GetVertex(2).Index;
faceVetices[0] = newMesh.Vertices[faceVertexIndex1];
faceVetices[1] = newMesh.Vertices[faceVertexIndex2];
faceVetices[2] = newMesh.Vertices[faceVertexIndex3];
newMesh.Faces.AddTriangles(faceVetices);
}
newMesh.TrimExcess();
return newMesh;
}
public static TriMesh Clone(TriMesh mesh)
{
TriMesh newMesh = new TriMesh();
for (int i = 0; i < mesh.Vertices.Count; i++)
{
VertexTraits traits = new VertexTraits(mesh.Vertices[i].Traits.Position.x,
mesh.Vertices[i].Traits.Position.y,
mesh.Vertices[i].Traits.Position.z);
newMesh.Vertices.Add(traits);
}
TriMesh.Vertex[] faceVetices = new TriMesh.Vertex[3];
for (int i = 0; i < mesh.Faces.Count; i++)
{
int faceVertexIndex1 = mesh.Faces[i].GetVertex(0).Index;
int faceVertexIndex2 = mesh.Faces[i].GetVertex(1).Index;
int faceVertexIndex3 = mesh.Faces[i].GetVertex(2).Index;
faceVetices[0] = newMesh.Vertices[faceVertexIndex1];
faceVetices[1] = newMesh.Vertices[faceVertexIndex2];
faceVetices[2] = newMesh.Vertices[faceVertexIndex3];
newMesh.Faces.AddTriangles(faceVetices);
}
newMesh.TrimExcess();
return(newMesh);
}
private static TriMesh LoadPlyStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
PlyFileProcessorState state = new PlyFileProcessorState();
string line;
while ((line = sr.ReadLine()) != null)
{
ProcessPlyLine(mesh, line, state);
}
mesh.TrimExcess();
return mesh;
}
private static TriMesh LoadGuStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
PlyFileProcessorState state = new PlyFileProcessorState();
string line;
while ((line = sr.ReadLine()) != null)
{
ProcessGuLine(mesh, line, state);
}
mesh.TrimExcess();
return(mesh);
}
private static TriMesh LoadOffStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
OffFileProcessorState state = new OffFileProcessorState();
string line;
bool ignoreFirstThreeNum = true;
while ((line = sr.ReadLine()) != null)
{
ProcessOffLine(mesh, line, state, ref ignoreFirstThreeNum);
}
mesh.TrimExcess();
return mesh;
}
private static TriMesh LoadOffStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
OffFileProcessorState state = new OffFileProcessorState();
string line;
bool ignoreFirstThreeNum = true;
while ((line = sr.ReadLine()) != null)
{
ProcessOffLine(mesh, line, state, ref ignoreFirstThreeNum);
}
mesh.TrimExcess();
return(mesh);
}
/// <summary>
/// Loads an OBJ file from a stream.
/// </summary>
/// <param name="stream">A stream with OBJ file data.</param>
private static TriMesh LoadObjStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
ObjFileProcessorState state = new ObjFileProcessorState();
string line;
while ((line = sr.ReadLine()) != null)
{
ProcessObjLine(mesh, line, state);
}
if (state.VertexTextureCoords.Count == mesh.Vertices.Count)
{
for (int i = 0; i < mesh.Vertices.Count; i++)
{
mesh.Vertices[i].Traits.UV = state.VertexTextureCoords[i];
}
}
mesh.TrimExcess();
return mesh;
}
public static TriMesh BulidSphere()//建立球星Trimesh
{
TriMesh sphere = new TriMesh();
sphere.Vertices.Add(new VertexTraits(-0.9972, 19.7347, -0.3015));
sphere.Vertices.Add(new VertexTraits(-0.9972, 13.8535, -15.6699));
sphere.Vertices.Add(new VertexTraits(-14.3067, 13.8535, -7.98572));
sphere.Vertices.Add(new VertexTraits(-14.3067, 13.8535, 7.3828));
sphere.Vertices.Add(new VertexTraits(-0.9972, 13.8535, 15.0670));
sphere.Vertices.Add(new VertexTraits(12.3122, 13.8535, 7.3828));
sphere.Vertices.Add(new VertexTraits(12.3122, 13.8535, -7.9857));
sphere.Vertices.Add(new VertexTraits(-0.9972, -3.8925, -15.6699));
sphere.Vertices.Add(new VertexTraits(-14.3067, -3.8925, -7.9857));
sphere.Vertices.Add(new VertexTraits(-14.3067, -3.8925, 7.3828));
sphere.Vertices.Add(new VertexTraits(-0.9972, -3.8925, 15.0670));
sphere.Vertices.Add(new VertexTraits(12.3122, -3.8925, 7.3828));
sphere.Vertices.Add(new VertexTraits(12.3122, -3.8925, -7.9857));
sphere.Vertices.Add(new VertexTraits(-0.9972, -9.7738, -0.3015));
BulidSphereFace(0, 1, 2,sphere);
BulidSphereFace(0, 2, 3,sphere);
BulidSphereFace(0, 3, 4, sphere);
BulidSphereFace(0, 4, 5, sphere);
BulidSphereFace(0, 5, 6, sphere);
BulidSphereFace(0, 6, 1, sphere);
BulidSphereFace(1, 7, 8, sphere);
BulidSphereFace(1, 8, 2, sphere);
BulidSphereFace(2, 8, 9, sphere);
BulidSphereFace(2, 9, 3, sphere);
BulidSphereFace(3, 9, 10, sphere);
BulidSphereFace(3, 10, 4, sphere);
BulidSphereFace(4, 10, 11, sphere);
BulidSphereFace(4, 11, 5, sphere);
BulidSphereFace(5, 11, 12, sphere);
BulidSphereFace(5, 12, 6, sphere);
BulidSphereFace(6, 12, 7, sphere);
BulidSphereFace(6, 7, 1, sphere);
BulidSphereFace(13, 8, 7, sphere);
BulidSphereFace(13, 9, 8, sphere);
BulidSphereFace(13, 10, 9, sphere);
BulidSphereFace(13, 11, 10, sphere);
BulidSphereFace(13, 12, 11, sphere);
BulidSphereFace(13, 7, 12, sphere);
sphere.TrimExcess();
Matrix4D m = new Matrix4D();
m[0, 0] = 0.003; m[1, 1] = 0.003; m[2, 2] = 0.003;
Vector4D v = new Vector4D();
for (int i = 0; i < sphere.Vertices.Count; i++)//对整个球进行缩放
{
v.x = sphere.Vertices[i].Traits.Position.x;
v.y = sphere.Vertices[i].Traits.Position.y;
v.z = sphere.Vertices[i].Traits.Position.z;
v.w = 1;
v *= m;
sphere.Vertices[i].Traits.Position.x = v.x;
sphere.Vertices[i].Traits.Position.y = v.y;
sphere.Vertices[i].Traits.Position.z = v.z;
}
return sphere;
}
public static TriMesh BulidSphere()//建立球星Trimesh
{
TriMesh sphere = new TriMesh();
sphere.Vertices.Add(new VertexTraits(-0.9972, 19.7347, -0.3015));
sphere.Vertices.Add(new VertexTraits(-0.9972, 13.8535, -15.6699));
sphere.Vertices.Add(new VertexTraits(-14.3067, 13.8535, -7.98572));
sphere.Vertices.Add(new VertexTraits(-14.3067, 13.8535, 7.3828));
sphere.Vertices.Add(new VertexTraits(-0.9972, 13.8535, 15.0670));
sphere.Vertices.Add(new VertexTraits(12.3122, 13.8535, 7.3828));
sphere.Vertices.Add(new VertexTraits(12.3122, 13.8535, -7.9857));
sphere.Vertices.Add(new VertexTraits(-0.9972, -3.8925, -15.6699));
sphere.Vertices.Add(new VertexTraits(-14.3067, -3.8925, -7.9857));
sphere.Vertices.Add(new VertexTraits(-14.3067, -3.8925, 7.3828));
sphere.Vertices.Add(new VertexTraits(-0.9972, -3.8925, 15.0670));
sphere.Vertices.Add(new VertexTraits(12.3122, -3.8925, 7.3828));
sphere.Vertices.Add(new VertexTraits(12.3122, -3.8925, -7.9857));
sphere.Vertices.Add(new VertexTraits(-0.9972, -9.7738, -0.3015));
BulidSphereFace(0, 1, 2, sphere);
BulidSphereFace(0, 2, 3, sphere);
BulidSphereFace(0, 3, 4, sphere);
BulidSphereFace(0, 4, 5, sphere);
BulidSphereFace(0, 5, 6, sphere);
BulidSphereFace(0, 6, 1, sphere);
BulidSphereFace(1, 7, 8, sphere);
BulidSphereFace(1, 8, 2, sphere);
BulidSphereFace(2, 8, 9, sphere);
BulidSphereFace(2, 9, 3, sphere);
BulidSphereFace(3, 9, 10, sphere);
BulidSphereFace(3, 10, 4, sphere);
BulidSphereFace(4, 10, 11, sphere);
BulidSphereFace(4, 11, 5, sphere);
BulidSphereFace(5, 11, 12, sphere);
BulidSphereFace(5, 12, 6, sphere);
BulidSphereFace(6, 12, 7, sphere);
BulidSphereFace(6, 7, 1, sphere);
BulidSphereFace(13, 8, 7, sphere);
BulidSphereFace(13, 9, 8, sphere);
BulidSphereFace(13, 10, 9, sphere);
BulidSphereFace(13, 11, 10, sphere);
BulidSphereFace(13, 12, 11, sphere);
BulidSphereFace(13, 7, 12, sphere);
sphere.TrimExcess();
Matrix4D m = new Matrix4D();
m[0, 0] = 0.003; m[1, 1] = 0.003; m[2, 2] = 0.003;
Vector4D v = new Vector4D();
for (int i = 0; i < sphere.Vertices.Count; i++)//对整个球进行缩放
{
v.x = sphere.Vertices[i].Traits.Position.x;
v.y = sphere.Vertices[i].Traits.Position.y;
v.z = sphere.Vertices[i].Traits.Position.z;
v.w = 1;
v *= m;
sphere.Vertices[i].Traits.Position.x = v.x;
sphere.Vertices[i].Traits.Position.y = v.y;
sphere.Vertices[i].Traits.Position.z = v.z;
}
return(sphere);
}
