public CarMesh(MeshChunk meshChunk, BitmapChunk bmpChunk, Color brakeColor)
: base(meshChunk, bmpChunk)
{
foreach (var poly in _polys)
{
switch (poly.Label)
{
case "rt_rear":
_rightRearWheel = poly;
break;
case "lt_rear":
_leftRearWheel = poly;
break;
case "rt_frnt":
_rightFrontWheel = poly;
break;
case "lt_frnt":
_leftFrontWheel = poly;
break;
case "bkll":
_leftBrakeLight = poly;
break;
case "bklr":
_rightBrakeLight = poly;
break;
}
}
var tyreEntry = bmpChunk.FindByName("tyr1");
if (tyreEntry != null)
_wheelTexture = tyreEntry.Texture;
// This seems like it should be done in a shader but I couldn't get it to work well enough
// (dealing with original paletted colors doesn't work so well in a texture stretched over a polygon)
var rsidPoly = _polys.FirstOrDefault(a => a.TextureName == "rsid");
if (rsidPoly != null)
{
// Generate a new texture for brake lights on.
Color[] pixels = new Color[rsidPoly.Texture.Width * rsidPoly.Texture.Height];
rsidPoly.Texture.GetData<Color>(pixels);
for (int i = 0; i < pixels.Length; i++)
{
if (pixels[i] == brakeColor)
pixels[i] = BrakeOnColor;
}
_brakeOnTexture = new Texture2D(Engine.Instance.Device, rsidPoly.Texture.Width, rsidPoly.Texture.Height);
_brakeOnTexture.SetData<Color>(pixels);
// Generate a new texture for brake lights off.
for (int i = 0; i < pixels.Length; i++)
{
if (pixels[i] == BrakeOnColor)
pixels[i] = BrakeOffColor;
}
_brakeOffTexture = new Texture2D(Engine.Instance.Device, _leftBrakeLight.Texture.Width, _leftBrakeLight.Texture.Height);
_brakeOffTexture.SetData<Color>(pixels);
}
}
private void ReadPolygonBlock(BinaryReader reader, int polygonCount, BinaryReader polygonVertexMap)
{
for (int i = 0; i < polygonCount; i++)
{
byte typeFlag = reader.ReadByte();
int shapeId = typeFlag & (0xff >> 5); // type = 3 or 4. Held in the first 3 bits
//bool computeTextureUVs = (typeFlag & (0x1 << 3)) != 0; // bit 3 is set if there are *no* texture co-ords (and we should infer them?)
byte b1 = reader.ReadByte();
byte textureNumber = reader.ReadByte();
byte b2 = reader.ReadByte();
int verticesIndex = reader.ReadInt32();
int textureCoordsIndex = reader.ReadInt32();
if (shapeId != 3 && shapeId != 4)
{
// something in Burnt Sienna has a value of 2. Haven't investigated yet.
continue;
}
// if these 2 indexes are the same, there are no texture coords
bool computeTextureUVs = verticesIndex == textureCoordsIndex;
Polygon polygon = new Polygon((PolygonShape)shapeId, computeTextureUVs);
polygon.TextureName = _textureNames[textureNumber];
if (polygon.TextureName == "dkfr")
{
}
//Vertices for polygon
polygonVertexMap.BaseStream.Position = verticesIndex * sizeof(int);
int v1 = polygonVertexMap.ReadInt32();
int v2 = polygonVertexMap.ReadInt32();
int v3 = polygonVertexMap.ReadInt32();
int v4 = polygonVertexMap.ReadInt32();
//Debug.WriteLine(String.Format("Poly {8} {0} {9} ({7}): {1},{2},{3},{4}, / {5} {6} computeUvs: {10}", i, v1, v2, v3, v4, b1, b2, polygon.TextureName, polygon.Shape, typeFlag.ToString("X"), computeTextureUVs));
//Texture co-ords for vertices
if (!computeTextureUVs)
{
polygonVertexMap.BaseStream.Position = textureCoordsIndex * sizeof(int);
int t1 = polygonVertexMap.ReadInt32();
int t2 = polygonVertexMap.ReadInt32();
int t3 = polygonVertexMap.ReadInt32();
int t4 = polygonVertexMap.ReadInt32();
polygon.Vertices[0] = _vertices[v1];
polygon.Vertices[1] = _vertices[v2];
polygon.Vertices[2] = _vertices[v3];
polygon.TextureUVs[0] = _vertexTextureMap[t1];
polygon.TextureUVs[1] = _vertexTextureMap[t2];
polygon.TextureUVs[2] = _vertexTextureMap[t3];
if (polygon.Shape == PolygonShape.Quad)
{
polygon.Vertices[3] = _vertices[v1];
polygon.Vertices[4] = _vertices[v3];
polygon.Vertices[5] = _vertices[v4];
polygon.TextureUVs[3] = _vertexTextureMap[t1];
polygon.TextureUVs[4] = _vertexTextureMap[t3];
polygon.TextureUVs[5] = _vertexTextureMap[t4];
}
}
else
{
if (polygon.Shape == PolygonShape.Quad)
{
polygon.Vertices[0] = _vertices[v1];
polygon.Vertices[1] = _vertices[v2];
polygon.Vertices[2] = _vertices[v3];
polygon.Vertices[3] = _vertices[v1];
polygon.Vertices[4] = _vertices[v3];
polygon.Vertices[5] = _vertices[v4];
}
else
{
throw new NotImplementedException();
}
}
_polygons.Add(polygon);
}
}
private void ReadPolygonBlock(BinaryReader reader, int polygonCount, BinaryReader polygonVertexMap)
{
for (int i = 0; i < polygonCount; i++)
{
byte typeFlag = reader.ReadByte();
int shapeId = typeFlag & (0xff >> 5); // type = 3 or 4. Held in the first 3 bits
//bool computeTextureUVs = (typeFlag & (0x1 << 3)) != 0; // bit 3 is set if there are *no* texture co-ords (and we should infer them?)
byte b1 = reader.ReadByte();
byte textureNumber = reader.ReadByte();
byte b2 = reader.ReadByte();
int verticesIndex = reader.ReadInt32();
int textureCoordsIndex = reader.ReadInt32();
if (shapeId != 3 && shapeId != 4)
{
// something in Burnt Sienna has a value of 2. Haven't investigated yet.
continue;
}
// if these 2 indexes are the same, there are no texture coords
bool computeTextureUVs = verticesIndex == textureCoordsIndex;
Polygon polygon = new Polygon((PolygonShape)shapeId, computeTextureUVs);
polygon.TextureName = _textureNames[textureNumber];
if (polygon.TextureName == "dkfr")
{
}
//Vertices for polygon
polygonVertexMap.BaseStream.Position = verticesIndex * sizeof(int);
int v1 = polygonVertexMap.ReadInt32();
int v2 = polygonVertexMap.ReadInt32();
int v3 = polygonVertexMap.ReadInt32();
int v4 = polygonVertexMap.ReadInt32();
//Debug.WriteLine(String.Format("Poly {8} {0} {9} ({7}): {1},{2},{3},{4}, / {5} {6} computeUvs: {10}", i, v1, v2, v3, v4, b1, b2, polygon.TextureName, polygon.Shape, typeFlag.ToString("X"), computeTextureUVs));
//Texture co-ords for vertices
if (!computeTextureUVs)
{
polygonVertexMap.BaseStream.Position = textureCoordsIndex * sizeof(int);
int t1 = polygonVertexMap.ReadInt32();
int t2 = polygonVertexMap.ReadInt32();
int t3 = polygonVertexMap.ReadInt32();
int t4 = polygonVertexMap.ReadInt32();
polygon.Vertices[0] = _vertices[v1];
polygon.Vertices[1] = _vertices[v2];
polygon.Vertices[2] = _vertices[v3];
polygon.TextureUVs[0] = _vertexTextureMap[t1];
polygon.TextureUVs[1] = _vertexTextureMap[t2];
polygon.TextureUVs[2] = _vertexTextureMap[t3];
if (polygon.Shape == PolygonShape.Quad)
{
polygon.Vertices[3] = _vertices[v1];
polygon.Vertices[4] = _vertices[v3];
polygon.Vertices[5] = _vertices[v4];
polygon.TextureUVs[3] = _vertexTextureMap[t1];
polygon.TextureUVs[4] = _vertexTextureMap[t3];
polygon.TextureUVs[5] = _vertexTextureMap[t4];
}
}
else
{
if (polygon.Shape == PolygonShape.Quad)
{
polygon.Vertices[0] = _vertices[v1];
polygon.Vertices[1] = _vertices[v2];
polygon.Vertices[2] = _vertices[v3];
polygon.Vertices[3] = _vertices[v1];
polygon.Vertices[4] = _vertices[v3];
polygon.Vertices[5] = _vertices[v4];
}
else
{
throw new NotImplementedException();
}
}
_polygons.Add(polygon);
}
}
private Vector3 GetWheelAxlePoint(Polygon wheelPoly)
{
float y = (wheelPoly.Vertices.Max(a => a.Y) + wheelPoly.Vertices.Min(a => a.Y)) / 2;
float z = (wheelPoly.Vertices.Max(a => a.Z) + wheelPoly.Vertices.Min(a => a.Z)) / 2;
// X value is always the same
return new Vector3(wheelPoly.Vertices[0].X, y, z);
}