public static ModelPart CreatePlane(string name, int materialId)
{
var model = new ModelPart
{
Faces = new ModelPartFace[1],
Name = name,
MaterialId = materialId
};
model.Faces[0] = ModelPartFace.CreateSquare(model, 0);
model.Faces[0].VertexIndices = new[] { 0, 1, 2, 3 };
model.Faces[0].Triangles[0] = new ModelTriangle(0, 1, 2, model.Faces[0], 0, 1, 2);
model.Faces[0].Triangles[1] = new ModelTriangle(0, 2, 3, model.Faces[0], 0, 2, 3);
model.Vertices = new[]
{
new Vector3(-0.5f, 0, 0.5f),
new Vector3(-0.5f, 0, -0.5f),
new Vector3(0.5f, 0, -0.5f),
new Vector3(0.5f, 0, 0.5f),
};
return(model);
}
public static ModelPart CreateCuboid()
{
var model = new ModelPart();
model.Faces = new ModelPartFace[6];
for (var i = 0; i < 6; i++)
{
model.Faces[i] = ModelPartFace.CreateSquare(model, i);
}
const int front = (int)CuboidFaceIndices.Front;
model.Faces[front].VertexIndices = new[] { 0, 1, 2, 3 };
model.Faces[front].Triangles[0] = new ModelTriangle(0, 1, 2, model.Faces[front], 0, 1, 2);
model.Faces[front].Triangles[1] = new ModelTriangle(0, 2, 3, model.Faces[front], 0, 2, 3);
const int back = (int)CuboidFaceIndices.Back;
model.Faces[back].VertexIndices = new[] { 7, 6, 5, 4 };
model.Faces[back].Triangles[0] = new ModelTriangle(7, 6, 5, model.Faces[back], 0, 1, 2);
model.Faces[back].Triangles[1] = new ModelTriangle(7, 5, 4, model.Faces[back], 0, 2, 3);
const int left = (int)CuboidFaceIndices.Left;
model.Faces[left].VertexIndices = new[] { 4, 5, 1, 0 };
model.Faces[left].Triangles[0] = new ModelTriangle(4, 5, 1, model.Faces[left], 0, 1, 2);
model.Faces[left].Triangles[1] = new ModelTriangle(4, 1, 0, model.Faces[left], 0, 2, 3);
const int right = (int)CuboidFaceIndices.Right;
model.Faces[right].VertexIndices = new[] { 3, 2, 6, 7 };
model.Faces[right].Triangles[0] = new ModelTriangle(3, 2, 6, model.Faces[right], 0, 1, 2);
model.Faces[right].Triangles[1] = new ModelTriangle(3, 6, 7, model.Faces[right], 0, 2, 3);
const int top = (int)CuboidFaceIndices.Top;
model.Faces[top].VertexIndices = new[] { 1, 5, 6, 2 };
model.Faces[top].Triangles[0] = new ModelTriangle(1, 5, 6, model.Faces[top], 0, 1, 2);
model.Faces[top].Triangles[1] = new ModelTriangle(1, 6, 2, model.Faces[top], 0, 2, 3);
const int bottom = (int)CuboidFaceIndices.Bottom;
model.Faces[bottom].VertexIndices = new[] { 4, 0, 3, 7 };
model.Faces[bottom].Triangles[0] = new ModelTriangle(4, 0, 3, model.Faces[bottom], 0, 1, 2);
model.Faces[bottom].Triangles[1] = new ModelTriangle(4, 3, 7, model.Faces[bottom], 0, 2, 3);
model.Vertices = new[]
{
new Vector3(-0.5f, -0.5f, 0.5f), // 0
new Vector3(-0.5f, -0.5f, -0.5f), // 1
new Vector3(0.5f, -0.5f, -0.5f), // 2
new Vector3(0.5f, -0.5f, 0.5f), // 3
new Vector3(-0.5f, 0.5f, 0.5f), // 4
new Vector3(-0.5f, 0.5f, -0.5f), // 5
new Vector3(0.5f, 0.5f, -0.5f), // 6
new Vector3(0.5f, 0.5f, 0.5f), // 7
};
return(model);
}
private ModelTriangle ReadModelPartTriangle(ModelPartFace modelPartFace)
{
var v1VertexIndex = _reader.ReadInt32();
var v1TexCoordIndex = _reader.ReadInt32();
var v2VertexIndex = _reader.ReadInt32();
var v2TexCoordIndex = _reader.ReadInt32();
var v3VertexIndex = _reader.ReadInt32();
var v3TexCoordIndex = _reader.ReadInt32();
return new ModelTriangle(
v1VertexIndex, v2VertexIndex, v3VertexIndex,
modelPartFace,
v1TexCoordIndex, v2TexCoordIndex, v3TexCoordIndex);
}
private void ReadModelPartFaceTriangles(ModelPartFace modelPartFace)
{
var count = _reader.ReadInt32();
modelPartFace.Triangles = new ModelTriangle[count];
for (var i = 0; i < count; i++)
{
modelPartFace.Triangles[i] = ReadModelPartTriangle(modelPartFace);
}
}
private ModelPartFace ReadModelPartFace(ModelPart modelPart)
{
var index = _reader.ReadInt32();
var modelPartFace = new ModelPartFace(index, modelPart) {Colour = _reader.ReadColour()};
var texCoordinateCount = _reader.ReadInt32();
modelPartFace.TextureCoordinates = new Vector2[texCoordinateCount];
for (var i = 0; i < texCoordinateCount; i++)
{
modelPartFace.TextureCoordinates[i] = _reader.ReadVectorXY();
}
var vertexIndexCount = _reader.ReadInt32();
modelPartFace.VertexIndices = new int[vertexIndexCount];
for (var i = 0; i < vertexIndexCount; i++)
{
modelPartFace.VertexIndices[i] = _reader.ReadInt32();
}
ReadModelPartFaceTriangles(modelPartFace);
return modelPartFace;
}
private static void WriteModelPartFaceTriangles(BinaryWriter writer, ModelPartFace modelPartFace)
{
writer.Write(modelPartFace.Triangles.Length);
foreach (var modelTriangle in modelPartFace.Triangles)
{
WriteModelPartTriangle(writer, modelTriangle);
}
}
private static void WriteModelPartFace(BinaryWriter writer, ModelPartFace modelPartFace)
{
writer.Write(modelPartFace.Index);
writer.WriteColour(modelPartFace.Colour);
writer.Write(modelPartFace.TextureCoordinates.Length);
foreach (var textureCoordinate in modelPartFace.TextureCoordinates)
{
writer.WriteVectorXY(textureCoordinate);
}
writer.Write(modelPartFace.VertexIndices.Length);
foreach (var vertexIndex in modelPartFace.VertexIndices)
{
writer.Write(vertexIndex);
}
WriteModelPartFaceTriangles(writer, modelPartFace);
}
