// Returns the contents of a LWOB
static LightwaveObject ReadObject5(ChunkReader reader)
{
// allocate an object and a default layer
var newObject = new LightwaveObject();
var currentLayer = new Layer();
newObject.Layers.Add(currentLayer);
uint pointOffset = 0;
uint polygonOffset = 0;
uint tagOffset = 0;
// process chunks as they're encountered
while (reader.BytesLeft > 0)
{
var id = reader.ReadID<ChunkType>();
var cksize = reader.ReadUInt32();
cksize += cksize & 1;
using (var subchunkReader = reader.GetSubChunk(cksize))
{
switch (id)
{
case ChunkType.ID_PNTS:
{
pointOffset = (uint)currentLayer.Points.Count;
currentLayer.Points.AddRange(
ReadPoints(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_POLS:
{
polygonOffset = (uint)currentLayer.Polygons.Count;
currentLayer.Polygons.AddRange(
ReadPolygons5(subchunkReader, pointOffset) // throws exception on failure
);
break;
}
case ChunkType.ID_SRFS:
{
tagOffset = (uint)newObject.Tags.Count;
newObject.Tags.AddRange(
LightwaveObject.ReadTags(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_SURF:
{
newObject.Surfaces.Add(
Surface.ReadSurface5(subchunkReader, newObject) // throws exception on failure
);
break;
}
default:
Console.WriteLine("Unknown chunk type " + reader.GetIDString((uint)id));
break;
}
}
}
if (newObject.Tags.Count == 0)
throw new Exception("No tags found for this layer"); // TODO: create a proper exception class
uint layer_index = 0;
foreach (var layer in newObject.Layers)
{
layer.CalculateBoundingBox();
newObject.CalculatePolygonNormals(layer.Points, layer.Polygons);
newObject.ResolvePointPolygons(layer.Points, layer.Polygons);
newObject.ResolvePolygonSurfaces(layer.Polygons, newObject.Tags, newObject.Surfaces, layer_index);
newObject.CalculateVertexNormals(layer.Points, layer.Polygons);
layer_index++;
}
return newObject;
}
// LWOB
public static Surface ReadSurface5(ChunkReader reader, LightwaveObject obj)
{
var surf = new Surface();
surf.name = reader.ReadString();
Texture tex = null;
LightwavePlugin shdr = null;
float[] v = new float[3];
uint flags = 0;
// process subchunks as they're encountered
while (reader.BytesLeft > 0)
{
var id = reader.ReadID<SurfaceParameter>();
var sz = reader.ReadUInt16();
sz += (ushort)(sz & 1);
using (var subChunkReader = reader.GetSubChunk(sz))
{
switch (id)
{
case SurfaceParameter.ID_COLR:
{
surf.color.Red = subChunkReader.ReadUInt8() / 255.0f;
surf.color.Green = subChunkReader.ReadUInt8() / 255.0f;
surf.color.Blue = subChunkReader.ReadUInt8() / 255.0f;
break;
}
case SurfaceParameter.ID_FLAG:
{
flags = subChunkReader.ReadUInt16();
if ((flags & 4) != 0) surf.smooth = 1.56207f;
if ((flags & 8) != 0) surf.color_hilite.value = 1.0f;
if ((flags & 16) != 0) surf.color_filter.value = 1.0f;
if ((flags & 128) != 0) surf.dif_sharp.value = 0.5f;
if ((flags & 256) != 0) surf.sideflags = 3;
if ((flags & 512) != 0) surf.add_trans.value = 1.0f;
break;
}
case SurfaceParameter.ID_LUMI:
{
surf.luminosity.Value = subChunkReader.ReadSInt16() / 256.0f;
break;
}
case SurfaceParameter.ID_VLUM:
{
surf.luminosity.Value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_DIFF:
{
surf.diffuse.Value = subChunkReader.ReadSInt16() / 256.0f;
break;
}
case SurfaceParameter.ID_VDIF:
{
surf.diffuse.Value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_SPEC:
{
surf.specularity.Value = subChunkReader.ReadSInt16() / 256.0f;
break;
}
case SurfaceParameter.ID_VSPC:
{
surf.specularity.Value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_GLOS:
{
surf.glossiness.Value = (float)Math.Log(subChunkReader.ReadUInt16()) / 20.7944f;
break;
}
case SurfaceParameter.ID_SMAN:
{
surf.smooth = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_REFL:
{
surf.reflection.values.Value = subChunkReader.ReadSInt16() / 256.0f;
break;
}
case SurfaceParameter.ID_RFLT:
{
surf.reflection.options = subChunkReader.ReadUInt16();
break;
}
case SurfaceParameter.ID_RIMG:
{
var s = subChunkReader.ReadString();
surf.reflection.clip_index = AddClip(s, obj.Clips);
surf.reflection.options = 3;
break;
}
case SurfaceParameter.ID_RSAN:
{
surf.reflection.seam_angle = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TRAN:
{
surf.transparency.values.Value = subChunkReader.ReadSInt16() / 256.0f;
break;
}
case SurfaceParameter.ID_RIND:
{
surf.eta.Value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_BTEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.bump.textures.Add(tex);
break;
}
case SurfaceParameter.ID_CTEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.color.textures.Add(tex);
break;
}
case SurfaceParameter.ID_DTEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.diffuse.textures.Add(tex);
break;
}
case SurfaceParameter.ID_LTEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.luminosity.textures.Add(tex);
break;
}
case SurfaceParameter.ID_RTEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.reflection.values.textures.Add(tex);
break;
}
case SurfaceParameter.ID_STEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.specularity.textures.Add(tex);
break;
}
case SurfaceParameter.ID_TTEX:
{
var s = subChunkReader.ReadString(sz);//.getbytes((uint)sz);
tex = ParseTexture(s);
surf.transparency.values.textures.Add(tex);
break;
}
case SurfaceParameter.ID_TFLG:
{
if (tex == null)
return null;
flags = subChunkReader.ReadUInt16();
int i = 0;
if ((flags & 1) != 0) i = 0;
if ((flags & 2) != 0) i = 1;
if ((flags & 4) != 0) i = 2;
tex.axis = (ushort)i;
if (tex.Type == TextureType.ID_IMAP)
tex.imap.axis = i;
else
tex.proc.axis = i;
if ((flags & 8) != 0) tex.tmap.CoordinateSystem = 1;
if ((flags & 16) != 0) tex.negative = 1;
if ((flags & 32) != 0) tex.imap.pblend = 1;
if ((flags & 64) != 0)
{
tex.imap.aa_strength = 1.0f;
tex.imap.aas_flags = 1;
}
break;
}
case SurfaceParameter.ID_TSIZ:
{
tex.tmap.Size.values[0] = subChunkReader.ReadSingle();
tex.tmap.Size.values[1] = subChunkReader.ReadSingle();
tex.tmap.Size.values[2] = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TCTR:
{
tex.tmap.Center.values[0] = subChunkReader.ReadSingle();
tex.tmap.Center.values[1] = subChunkReader.ReadSingle();
tex.tmap.Center.values[2] = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TFAL:
{
tex.tmap.FallOff.values[0] = subChunkReader.ReadSingle();
tex.tmap.FallOff.values[1] = subChunkReader.ReadSingle();
tex.tmap.FallOff.values[2] = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TVEL:
{
for (var i = 0; i < 3; i++)
v[i] = subChunkReader.ReadSingle();
tex.tmap.Center.envelope_index = AddTextureVelocity(tex.tmap.Center.values, v, obj.Envelopes);
break;
}
case SurfaceParameter.ID_TCLR:
{
if (tex.Type == TextureType.ID_PROC)
{
tex.proc.value_0 = subChunkReader.ReadUInt8() / 255.0f;
tex.proc.value_1 = subChunkReader.ReadUInt8() / 255.0f;
tex.proc.value_2 = subChunkReader.ReadUInt8() / 255.0f;
}
break;
}
case SurfaceParameter.ID_TVAL:
{
tex.proc.value_0 = subChunkReader.ReadSInt16() / 256.0f;
break;
}
case SurfaceParameter.ID_TAMP:
{
if (tex.Type == TextureType.ID_IMAP)
tex.imap.amplitude.value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TIMG:
{
var s = subChunkReader.ReadString();
tex.imap.clip_index = AddClip(s, obj.Clips);
break;
}
case SurfaceParameter.ID_TAAS:
{
tex.imap.aa_strength = subChunkReader.ReadSingle();
tex.imap.aas_flags = 1;
break;
}
case SurfaceParameter.ID_TREF:
{
tex.tmap.ReferenceObject = subChunkReader.ReadString((uint)sz);//.getbytes((uint)sz);
break;
}
case SurfaceParameter.ID_TOPC:
{
tex.opacity.value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TFP0:
{
if (tex.Type == TextureType.ID_IMAP)
tex.imap.wrapw.value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_TFP1:
{
if (tex.Type == TextureType.ID_IMAP)
tex.imap.wraph.value = subChunkReader.ReadSingle();
break;
}
case SurfaceParameter.ID_SHDR:
{
shdr = new LightwavePlugin();
if (shdr == null)
return null;
shdr.name = subChunkReader.ReadString((uint)sz);
surf.shader.Add(shdr);
break;
}
case SurfaceParameter.ID_SDAT:
{
if (shdr == null)
return null;
shdr.data = subChunkReader.ReadBytes(sz);
break;
}
default:
Console.WriteLine("Unknown surface parameter type " + reader.GetIDString((uint)id));
break;
}
}
}
return surf;
}
static LightwaveObject ReadObject2(ChunkReader reader)
{
// allocate an object and a default layer
var newObject = new LightwaveObject();
var currentLayer = new Layer();
newObject.Layers.Add(currentLayer);
bool createdLayer = false;
uint pointOffset = 0;
uint polygonOffset = 0;
uint tagOffset = 0;
// process chunks as they're encountered
while (reader.BytesLeft > 0)
{
var id = reader.ReadID<ChunkType>();
var cksize = reader.ReadUInt32();
cksize += cksize & 1;
using (var subchunkReader = reader.GetSubChunk(cksize))
{
switch (id)
{
case ChunkType.ID_LAYR:
{
if (createdLayer)
{
currentLayer = new Layer();
newObject.Layers.Add(currentLayer);
}
createdLayer = true;
currentLayer.Index = subchunkReader.ReadUInt16();
currentLayer.Flags = subchunkReader.ReadUInt16();
currentLayer.pivot_x = subchunkReader.ReadSingle();
currentLayer.pivot_y = subchunkReader.ReadSingle();
currentLayer.pivot_z = subchunkReader.ReadSingle();
currentLayer.Name = subchunkReader.ReadString();
if (subchunkReader.BytesLeft > 2)
currentLayer.Parent = subchunkReader.ReadUInt16();
break;
}
case ChunkType.ID_PTAG:
{
ReadPolygonTags(subchunkReader, currentLayer.Polygons, polygonOffset, tagOffset);
break;
}
case ChunkType.ID_BBOX:
{
currentLayer.bbox_min_x = subchunkReader.ReadSingle();
currentLayer.bbox_min_y = subchunkReader.ReadSingle();
currentLayer.bbox_min_z = subchunkReader.ReadSingle();
currentLayer.bbox_max_x = subchunkReader.ReadSingle();
currentLayer.bbox_max_y = subchunkReader.ReadSingle();
currentLayer.bbox_max_z = subchunkReader.ReadSingle();
break;
}
case ChunkType.ID_PNTS:
{
pointOffset = (uint)currentLayer.Points.Count;
currentLayer.Points.AddRange(
ReadPoints(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_POLS:
{
polygonOffset = (uint)currentLayer.Polygons.Count;
currentLayer.Polygons.AddRange(
ReadPolygons(subchunkReader, pointOffset) // throws exception on failure
);
break;
}
case ChunkType.ID_VMAP:
{
currentLayer.VertexMaps.Add(
VertexMap.ReadVertexMap(subchunkReader, false) // throws exception on failure
);
break;
}
case ChunkType.ID_VMAD:
{
currentLayer.VertexMaps.Add(
VertexMap.ReadVertexMap(subchunkReader, true) // throws exception on failure
);
break;
}
case ChunkType.ID_TAGS:
{
tagOffset = (uint)newObject.Tags.Count;
newObject.Tags.AddRange(
LightwaveObject.ReadTags(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_ENVL:
{
newObject.Envelopes.Add(
Envelope.ReadEnvelope(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_CLIP:
{
newObject.Clips.Add(
Clip.ReadClip(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_SURF:
{
newObject.Surfaces.Add(
Surface.ReadSurface(subchunkReader) // throws exception on failure
);
break;
}
case ChunkType.ID_DESC: // Description Line - DESC { description-line[S0] }
case ChunkType.ID_TEXT: // Commentary Text - TEXT { comment[S0] }
case ChunkType.ID_ICON: // Thumbnail Icon Image - ICON { encoding[U2], width[U2], data[U1] * }
case ChunkType.ID_VMPA: // Vertex Map Parameter - VMPA { UV subdivision type[I4], sketch color[I4] }
break;
default:
Console.WriteLine("Unknown chunk type " + reader.GetIDString((uint)id));
break;
}
}
}
if (newObject.Tags.Count == 0)
throw new Exception("No tags found for this layer"); // TODO: create a proper exception class
uint layer_index = 0;
foreach (var layer in newObject.Layers)
{
layer.CalculateBoundingBox();
newObject.CalculatePolygonNormals(layer.Points, layer.Polygons);
newObject.ResolvePointPolygons(layer.Points, layer.Polygons);
newObject.ResolvePolygonSurfaces(layer.Polygons, newObject.Tags, newObject.Surfaces, layer_index);
newObject.CalculateVertexNormals(layer.Points, layer.Polygons);
newObject.ResolvePointVertexMaps(layer.Points, layer.VertexMaps);
newObject.ResolvePolygonVertexMaps(layer.Polygons, layer.VertexMaps);
layer_index++;
}
return newObject;
}
