private static Face parseFace(string[] splitLine)
{
var vertexIds = new Face.VertexIds[
splitLine.Length - 1];
for (int i = 1; i < splitLine.Length; i++)
{
var ids = splitLine[i].Split(
faceSplitCharacters, StringSplitOptions.None);
var p = parseIndex(ids[0]);
var uv = -1;
var n = -1;
if (ids.Length > 1)
{
uv = parseIndex(ids[1]) - 1;
if (ids.Length > 2)
{
n = parseIndex(ids[2]);
}
}
vertexIds[i - 1] = new Face.VertexIds(p, uv, n);
}
return(new Face(vertexIds));
}
public virtual int this[Face.VertexIds vIds]
{
get
{
return(this.builder.AddVertices(
this.owner.createVertex(vIds, this.parser)
));
}
}
public override int this[Face.VertexIds vIds]
{
get
{
int id;
if (!this.vertices.TryGetValue(vIds, out id))
{
id = base[vIds];
this.vertices.Add(vIds, id);
}
return(id);
}
}
private TVertex createVertex <TVertex>(
Face.VertexIds ids, ObjFileVertexParser <TVertex> parser)
where TVertex : struct
{
var position = this.positions[ids.Position];
var uv = ids.UV < 2
? new Vector3(0)
: this.uvCoordinates[ids.UV];
var normal = ids.UV < 0
? new Vector3(0)
: this.normals[ids.Normal];
return(parser(position, uv, normal));
}
private static Face parseFace(string[] splitLine)
{
var vertexIds = new Face.VertexIds[
splitLine.Length - 1];
for (int i = 1; i < splitLine.Length; i++)
{
var ids = splitLine[i].Split(
faceSplitCharacters, StringSplitOptions.None);
var p = parseIndex(ids[0]);
var uv = -1;
var n = -1;
if (ids.Length > 1)
{
uv = parseIndex(ids[1]) - 1;
if (ids.Length > 2)
n = parseIndex(ids[2]);
}
vertexIds[i - 1] = new Face.VertexIds(p, uv, n);
}
return new Face(vertexIds);
}
public void AddWallSegment(Vector2[] corners, float negY, float posY)
{
// Initialization
if (this.uvCoordinates.Count == 0)
{
this.uvCoordinates.AddRange(new Vector3[] {
new Vector3(1.9f, 0, 0), new Vector3(1.9f, 9, 0), new Vector3(2, 0, 0), new Vector3(2, 9, 0), // Left (0-3)
new Vector3(3.9f, 1, 0), new Vector3(3.9f, 9, 0), new Vector3(4, 1, 0), new Vector3(4, 9, 0), // Middle (4-7)
new Vector3(6, 1, 0), new Vector3(6, 9, 0), new Vector3(9, 1, 0), new Vector3(9, 9, 0) // Right (8-11)
});
this.normals.AddRange(new Vector3[] { // N E S W U D - NU EU SU WU - NW NE SE SW - NWU NEU SEU SWU
-Vector3.UnitZ, Vector3.UnitX, Vector3.UnitZ, -Vector3.UnitX, Vector3.UnitY, -Vector3.UnitY, // 0-5
new Vector3(0, 1, -1), new Vector3(1, 1, 0), new Vector3(0, 1, 1), new Vector3(-1, 1, 0), // 6-9
new Vector3(-1, 0, -1), new Vector3(1, 0, -1), new Vector3(1, 0, 1), new Vector3(-1, 0, 1), // 10-13
new Vector3(-1, 1, -1), new Vector3(1, 1, -1), new Vector3(1, 1, 1), new Vector3(-1, 1, 1) // 14-17
});
for (int i = 0; i < this.uvCoordinates.Count; i++)
{
this.uvCoordinates[i] = this.uvCoordinates[i] * 0.1f;
}
for (int i = 6; i < this.normals.Count; i++)
{
this.normals[i].Normalize();
}
}
int baseId = this.positions.Count;
// Add the positions
if (corners.Length != 4)
{
throw new Exception("A wall must have 4 (2D) corners.");
}
for (int i = 0; i < 4; i++) // NW, NE, SW, SE
{
float xOffset = i % 2 == 0 ? 0.1f : -0.1f;
float yOffset = i < 2 ? 0.1f : -0.1f;
this.positions.Add(new Vector4(corners[i].X + xOffset, -negY, corners[i].Y, 1));
this.positions.Add(new Vector4(corners[i].X, -negY, corners[i].Y + yOffset, 1));
this.positions.Add(new Vector4(corners[i].X + xOffset, posY - 0.2f, corners[i].Y, 1));
this.positions.Add(new Vector4(corners[i].X, posY - 0.2f, corners[i].Y + yOffset, 1));
this.positions.Add(new Vector4(corners[i].X + 2 * xOffset, posY, corners[i].Y + 2 * yOffset, 1));
}
// Add the faces
int nwd1 = baseId + 0; int nwd2 = baseId + 1; int nwm1 = baseId + 2; int nwm2 = baseId + 3; int nwu = baseId + 4;
int ned1 = baseId + 5; int ned2 = baseId + 6; int nem1 = baseId + 7; int nem2 = baseId + 8; int neu = baseId + 9;
int swd1 = baseId + 10; int swd2 = baseId + 11; int swm1 = baseId + 12; int swm2 = baseId + 13; int swu = baseId + 14;
int sed1 = baseId + 15; int sed2 = baseId + 16; int sem1 = baseId + 17; int sem2 = baseId + 18; int seu = baseId + 19;
Face.VertexIds[] rectangles = new Face.VertexIds[] { // These are all the rectangle faces
vids(nwm1, 0, 10), vids(nwd1, 1, 10), vids(nwm2, 2, 10), vids(nwd2, 3, 10), // NW
vids(nem1, 0, 0), vids(ned1, 1, 0), vids(nwm1, 2, 0), vids(nwd1, 3, 0), // N
vids(nem2, 0, 10), vids(ned2, 1, 10), vids(nem1, 2, 10), vids(ned1, 3, 10), // NE
vids(sem2, 0, 1), vids(sed2, 1, 1), vids(nem2, 2, 1), vids(ned2, 3, 1), // E
vids(sem1, 0, 10), vids(sed1, 1, 10), vids(sem2, 2, 10), vids(sed2, 3, 10), // SE
vids(swm1, 0, 2), vids(swd1, 1, 2), vids(sem1, 2, 2), vids(sed1, 3, 2), // S
vids(swm2, 0, 10), vids(swd2, 1, 10), vids(swm1, 2, 10), vids(swd1, 3, 10), // SW
vids(nwm2, 0, 3), vids(nwd2, 1, 3), vids(swm2, 2, 3), vids(swd2, 3, 3), // W
vids(nwu, 8, 4), vids(swu, 9, 4), vids(neu, 10, 4), vids(seu, 11, 4), // U
// vids(swd, 8, 5), vids(nwd, 9, 5), vids(sed, 10, 5), vids(ned, 11, 5), // D
vids(neu, 4, 6), vids(nem1, 5, 6), vids(nwu, 6, 6), vids(nwm1, 7, 6), // NU
vids(seu, 4, 7), vids(sem2, 5, 7), vids(neu, 6, 7), vids(nem2, 7, 7), // EU
vids(swu, 4, 8), vids(swm1, 5, 8), vids(seu, 6, 8), vids(sem1, 7, 8), // SU
vids(nwu, 4, 9), vids(nwm2, 5, 9), vids(swu, 6, 9), vids(swm2, 7, 9) // WU
};
Face.VertexIds[] triangles = new Face.VertexIds[] { // These are all the triangle faces
vids(nwu, 4, 14), vids(nwm1, 5, 14), vids(nwm2, 7, 14), // NWU
vids(neu, 4, 15), vids(nem2, 5, 15), vids(nem1, 7, 15), // NEU
vids(seu, 4, 16), vids(sem1, 5, 16), vids(sem2, 7, 16), // SEU
vids(swu, 4, 17), vids(swm2, 5, 17), vids(swm1, 7, 17) // SWU
};
for (int i = 0; i < rectangles.Length; i += 4)
{
this.faces.Add(new Face(new List <Face.VertexIds>()
{
rectangles[i + 0], rectangles[i + 1], rectangles[i + 2]
}));
this.faces.Add(new Face(new List <Face.VertexIds>()
{
rectangles[i + 1], rectangles[i + 3], rectangles[i + 2]
}));
}
for (int i = 0; i < triangles.Length; i += 3)
{
this.faces.Add(new Face(new List <Face.VertexIds>()
{
triangles[i + 0], triangles[i + 1], triangles[i + 2]
}));
}
}