private void WriteModel(ModelEntity model)
{
if (model.Texture != null)
{
if (_mtlExporter.AddMaterial(model.TexturePage))
{
_pngExporter.Export(model.Texture, model.TexturePage, _selectedPath);
}
}
var worldMatrix = model.WorldMatrix;
foreach (var triangle in model.Triangles)
{
var vertexColor0 = string.Empty;
var vertexColor1 = string.Empty;
var vertexColor2 = string.Empty;
var c0 = triangle.Colors[0];
var c1 = triangle.Colors[1];
var c2 = triangle.Colors[2];
if (_experimentalVertexColor)
{
vertexColor0 = string.Format(" {0} {1} {2}", (c0.R).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (c0.G).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (c0.B).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
vertexColor1 = string.Format(" {0} {1} {2}", (c1.R).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (c1.G).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (c1.B).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
vertexColor2 = string.Format(" {0} {1} {2}", (c2.R).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (c2.G).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (c2.B).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
}
var v0 = Vector3.TransformPosition(triangle.Vertices[0], worldMatrix);
var v1 = Vector3.TransformPosition(triangle.Vertices[1], worldMatrix);
var v2 = Vector3.TransformPosition(triangle.Vertices[2], worldMatrix);
_streamWriter.WriteLine("v {0} {1} {2} {3}", (v0.X).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-v0.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-v0.Z).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), vertexColor0);
_streamWriter.WriteLine("v {0} {1} {2} {3}", (v1.X).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-v1.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-v1.Z).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), vertexColor1);
_streamWriter.WriteLine("v {0} {1} {2} {3}", (v2.X).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-v2.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-v2.Z).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), vertexColor2);
}
foreach (var triangle in model.Triangles)
{
var n0 = Vector3.TransformNormal(triangle.Normals[0], worldMatrix);
var n1 = Vector3.TransformNormal(triangle.Normals[1], worldMatrix);
var n2 = Vector3.TransformNormal(triangle.Normals[2], worldMatrix);
_streamWriter.WriteLine("vn {0} {1} {2}", (n0.X).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-n0.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-n0.Z).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
_streamWriter.WriteLine("vn {0} {1} {2}", (n1.X).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-n1.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-n1.Z).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
_streamWriter.WriteLine("vn {0} {1} {2}", (n2.X).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-n2.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (-n2.Z).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
}
foreach (var triangle in model.Triangles)
{
var uv0 = triangle.Uv[0];
var uv1 = triangle.Uv[1];
var uv2 = triangle.Uv[2];
_streamWriter.WriteLine("vt {0} {1}", uv0.X.ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (1f - uv0.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
_streamWriter.WriteLine("vt {0} {1}", uv1.X.ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (1f - uv1.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
_streamWriter.WriteLine("vt {0} {1}", uv2.X.ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture), (1f - uv2.Y).ToString(GeomUtils.FloatFormat, CultureInfo.InvariantCulture));
}
}
public void Export(RootEntity[] entities, string selectedPath)
{
var pngExporter = new PngExporter();
for (var i = 0; i < entities.Length; i++)
{
var entity = entities[i];
var writer = new StreamWriter(selectedPath + "/ply" + i + ".ply");
writer.WriteLine("ply");
writer.WriteLine("format ascii 1.0");
var materialsDic = new Dictionary <int, int>();
var faceCount = 0;
var numMaterials = 0;
foreach (var entityBase in entity.ChildEntities)
{
var model = (ModelEntity)entityBase;
faceCount += model.Triangles.Count();
var texturePage = model.TexturePage;
if (!materialsDic.ContainsKey(texturePage))
{
materialsDic.Add(texturePage, numMaterials++);
pngExporter.Export(model.Texture, texturePage, selectedPath);
}
}
var vertexCount = faceCount * 3;
writer.WriteLine("element vertex {0}", vertexCount);
writer.WriteLine("property float32 x");
writer.WriteLine("property float32 y");
writer.WriteLine("property float32 z");
writer.WriteLine("property float32 nx");
writer.WriteLine("property float32 ny");
writer.WriteLine("property float32 nz");
writer.WriteLine("property float32 u");
writer.WriteLine("property float32 v");
writer.WriteLine("property uchar red");
writer.WriteLine("property uchar green");
writer.WriteLine("property uchar blue");
writer.WriteLine("property int32 material_index");
writer.WriteLine("element face {0}", faceCount);
writer.WriteLine("property list uint8 int32 vertex_indices");
writer.WriteLine("element material {0}", numMaterials);
writer.WriteLine("property uchar ambient_red");
writer.WriteLine("property uchar ambient_green");
writer.WriteLine("property uchar ambient_blue");
writer.WriteLine("property float32 ambient_coeff");
writer.WriteLine("property uchar diffuse_red");
writer.WriteLine("property uchar diffuse_green");
writer.WriteLine("property uchar diffuse_blue");
writer.WriteLine("property float32 diffuse_coeff");
writer.WriteLine("end_header");
foreach (var entityBase in entity.ChildEntities)
{
var model = (ModelEntity)entityBase;
var materialIndex = materialsDic[model.TexturePage];
var triangles = model.Triangles;
var worldMatrix = model.WorldMatrix;
foreach (var triangle in triangles)
{
var vertex0 = Vector3.TransformPosition(triangle.Vertices[0], worldMatrix);
var normal0 = Vector3.TransformNormal(triangle.Normals[0], worldMatrix);
var uv0 = triangle.Uv[0];
var color0 = triangle.Colors[0];
writer.WriteLine("{0} {1} {2} {3} {4} {5} {6} {7} {8} {9} {10} {11}",
(-vertex0.X).ToString(GeomUtils.FloatFormat), (-vertex0.Y).ToString(GeomUtils.FloatFormat), (-vertex0.Z).ToString(GeomUtils.FloatFormat),
(-normal0.X).ToString(GeomUtils.FloatFormat), (-normal0.Y).ToString(GeomUtils.FloatFormat), (-normal0.Z).ToString(GeomUtils.FloatFormat),
uv0.X.ToString(GeomUtils.FloatFormat), (1f - uv0.Y).ToString(GeomUtils.FloatFormat),
(color0.R * 255).ToString(GeomUtils.IntegerFormat), (color0.G * 255).ToString(GeomUtils.IntegerFormat), (color0.B * 255).ToString(GeomUtils.IntegerFormat),
materialIndex);
var vertex1 = Vector3.TransformPosition(triangle.Vertices[1], worldMatrix);
var normal1 = Vector3.TransformNormal(triangle.Normals[1], worldMatrix);
var uv1 = triangle.Uv[1];
var color1 = triangle.Colors[1];
writer.WriteLine("{0} {1} {2} {3} {4} {5} {6} {7} {8} {9} {10} {11}",
(-vertex1.X).ToString(GeomUtils.FloatFormat), (-vertex1.Y).ToString(GeomUtils.FloatFormat), (-vertex1.Z).ToString(GeomUtils.FloatFormat),
(-normal1.X).ToString(GeomUtils.FloatFormat), (-normal1.Y).ToString(GeomUtils.FloatFormat), (-normal1.Z).ToString(GeomUtils.FloatFormat),
uv1.X.ToString(GeomUtils.FloatFormat), (1f - uv1.Y).ToString(GeomUtils.FloatFormat),
(color1.R * 255).ToString(GeomUtils.IntegerFormat), (color1.G * 255).ToString(GeomUtils.IntegerFormat), (color1.B * 255).ToString(GeomUtils.IntegerFormat),
materialIndex
);
var vertex2 = Vector3.TransformPosition(triangle.Vertices[2], worldMatrix);
var normal2 = Vector3.TransformNormal(triangle.Normals[2], worldMatrix);
var uv2 = triangle.Uv[2];
var color2 = triangle.Colors[2];
writer.WriteLine("{0} {1} {2} {3} {4} {5} {6} {7} {8} {9} {10} {11}",
(-vertex2.X).ToString(GeomUtils.FloatFormat), (-vertex2.Y).ToString(GeomUtils.FloatFormat), (-vertex2.Z).ToString(GeomUtils.FloatFormat),
(-normal2.X).ToString(GeomUtils.FloatFormat), (-normal2.Y).ToString(GeomUtils.FloatFormat), (-normal2.Z).ToString(GeomUtils.FloatFormat),
uv2.X.ToString(GeomUtils.FloatFormat), (1f - uv2.Y).ToString(GeomUtils.FloatFormat),
(color2.R * 255).ToString(GeomUtils.IntegerFormat), (color2.G * 255).ToString(GeomUtils.IntegerFormat), (color2.B * 255).ToString(GeomUtils.IntegerFormat),
materialIndex
);
}
}
for (var j = 0; j < faceCount; j++)
{
var faceIndex = j * 3;
writer.WriteLine("3 {2} {1} {0}", faceIndex, faceIndex + 1, faceIndex + 2);
}
for (var j = 0; j < numMaterials; j++)
{
writer.WriteLine("128 128 128 1.00000 128 128 128 1.00000");
}
writer.Close();
}
}
