void C3DSLoader::ReadNextObjChunk(t3DModel *pModel, t3DObject *pObject, tChunk *pPreChunk)
{
int buffer[50000] = {0};
m_CurrentChunk = new tChunk;
while (pPreChunk->bytesRead < pPreChunk->length)
{
ReadChunk(m_CurrentChunk);
switch (m_CurrentChunk->ID)
{
case OBJ_MESH:
ReadNextObjChunk(pModel, pObject, m_CurrentChunk);
break;
case OBJ_VERTICES:
ReadVertices(pObject, m_CurrentChunk);
break;
case OBJ_FACES:
ReadVertexIndices(pObject, m_CurrentChunk);
break;
case OBJ_MATERIAL:
ReadObjMat(pModel, pObject, m_CurrentChunk);
break;
case OBJ_UV:
ReadUVCoordinates(pObject, m_CurrentChunk);
break;
default:
m_CurrentChunk->bytesRead += fread(buffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
}
pPreChunk->bytesRead += m_CurrentChunk->bytesRead;
}
delete m_CurrentChunk;
m_CurrentChunk = pPreChunk;
}
void CLoad3DS::ProcessNextObjectChunk(t3DModel *pModel, t3DObject *pObject, tChunk *pPreviousChunk)
{
// The current chunk to work with
tChunk currentChunk = {0};
// Continue to read these chunks until we read the end of this sub chunk
while (pPreviousChunk->bytesRead < pPreviousChunk->length)
{
// Read the next chunk
ReadChunk(¤tChunk);
// Check which chunk we just read
switch (currentChunk.ID)
{
case OBJECT_MESH: // This lets us know that we are reading a new object
// We found a new object, so let's read in it's info using recursion
ProcessNextObjectChunk(pModel, pObject, ¤tChunk);
break;
case OBJECT_VERTICES: // This is the objects vertices
ReadVertices(pObject, ¤tChunk);
break;
case OBJECT_FACES: // This is the objects face information
ReadVertexIndices(pObject, ¤tChunk);
break;
case OBJECT_MATERIAL: // This holds the material name that the object has
// This chunk holds the name of the material that the object has assigned to it.
// This could either be just a color or a texture map. This chunk also holds
// the faces that the texture is assigned to (In the case that there is multiple
// textures assigned to one object, or it just has a texture on a part of the object.
// Since most of my game objects just have the texture around the whole object, and
// they aren't multitextured, I just want the material name.
// We now will read the name of the material assigned to this object
ReadObjectMaterial(pModel, pObject, ¤tChunk);
break;
case OBJECT_UV: // This holds the UV texture coordinates for the object
// This chunk holds all of the UV coordinates for our object. Let's read them in.
ReadUVCoordinates(pObject, ¤tChunk);
break;
default:
// Read past the ignored or unknown chunks
currentChunk.bytesRead += fread(gBuffer, 1, currentChunk.length - currentChunk.bytesRead, m_FilePointer);
break;
}
// Add the bytes read from the last chunk to the previous chunk passed in.
pPreviousChunk->bytesRead += currentChunk.bytesRead;
}
}
void ModelLoader::ProcessNextObjectChunk(Model3DS *pModel, Object3DS *pObject, Chunk *pPreviousChunk)
{
// The current chunk to work with
Chunk currentChunk = {0};
// Continue to read these chunks until we read the end of this sub chunk
while (pPreviousChunk->bytesRead < pPreviousChunk->length){
// Read the next chunk
ReadChunk(¤tChunk);
// Check which chunk we just read
switch (currentChunk.ID){
case OBJECT_MESH:
// This case means we hit a new object, so jump in again and read this next chunk
ProcessNextObjectChunk(pModel, pObject, ¤tChunk);
break;
case OBJECT_VERTICES:
// Object vertices
ReadVertices(pObject, ¤tChunk);
break;
case OBJECT_FACES:
// Object faces
ReadVertexIndices(pObject, ¤tChunk);
break;
case OBJECT_MATERIAL:
// This chunk stores both texture information, or color information
// depending on the object. At the moment we'll just support textures
// so we'll read in the name of the texture and build it later. If there
// is just color we'll not bother then.
ReadObjectMaterial(pModel, pObject, ¤tChunk);
break;
case OBJECT_UV:
// UV coordinates
ReadUVCoordinates(pObject, ¤tChunk);
break;
default:
// Ignored chunk, read past it.
currentChunk.bytesRead += fread(m_Buffer, 1, currentChunk.length - currentChunk.bytesRead, m_FilePointer);
break;
}
// Add the bytes read from the last chunk to the previous chunk passed in.
pPreviousChunk->bytesRead += currentChunk.bytesRead;
}
}
void ProcessNextObjectChunk(Loader3ds *pt3ds,tChunk *pPreviousChunk)
{
tChunk currentChunk = {0};
while (pPreviousChunk->bytesRead < pPreviousChunk->length)
{
// Read the next chunk
ReadChunk(pt3ds,¤tChunk);
switch (currentChunk.ID)
{
case OBJECT_MESH:
// We found a new object so use recursion
ProcessNextObjectChunk(pt3ds,¤tChunk);
break;
case OBJECT_VERTICES: // 4110This is the objects vertices
ReadVertices(pt3ds,¤tChunk);
break;
case OBJECT_FACES: // 4120This is the objects face information
ReadVertexIndices(pt3ds,¤tChunk);
break;
case OBJECT_MATERIAL:
ReadObjectMaterial(pt3ds,¤tChunk);
break;
case OBJECT_UV: // 4140This holds the UV texture coordinates for the object
ReadUVCoordinates(pt3ds,¤tChunk);
break;
case OBJECT_TRANSF: // 4160
ReadObjectTransf(pt3ds,¤tChunk);
break;
default:
currentChunk.bytesRead += fread(pt3ds->gBuffer, 1, currentChunk.length - currentChunk.bytesRead, pt3ds->FilePointer);
break;
}
pPreviousChunk->bytesRead += currentChunk.bytesRead;
}
}
void CLoad3DS::ProcessNextObjectChunk(t3DModel *pModel, t3DObject *pObject, tChunk *pPreviousChunk)
{
// int buffer[50000] = {0};
// int *buffer = new int[50000];
m_CurrentChunk = new tChunk;
while (pPreviousChunk->bytesRead < pPreviousChunk->length)
{
ReadChunk(m_CurrentChunk);
switch (m_CurrentChunk->ID)
{
case OBJECT_MESH:
ProcessNextObjectChunk(pModel, pObject, m_CurrentChunk);
break;
case OBJECT_VERTICES:
ReadVertices(pObject, m_CurrentChunk);
break;
case OBJECT_FACES:
ReadVertexIndices(pObject, m_CurrentChunk);
break;
case OBJECT_MATERIAL:
ReadObjectMaterial(pModel, pObject, m_CurrentChunk);
break;
case OBJECT_UV:
ReadUVCoordinates(pObject, m_CurrentChunk);
break;
default:
// m_CurrentChunk->bytesRead += ASSET_READ(buffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
ASSET_SEEK(m_FilePointer, m_CurrentChunk->length - m_CurrentChunk->bytesRead, SEEK_CUR);
m_CurrentChunk->bytesRead += (m_CurrentChunk->length - m_CurrentChunk->bytesRead);
break;
}
pPreviousChunk->bytesRead += m_CurrentChunk->bytesRead;
}
delete m_CurrentChunk;
m_CurrentChunk = pPreviousChunk;
// delete []buffer;
}
// 下面的函数处理所有的文件中对象的信息
void CLoad3DS::ReadNextObjChunk(t3DModel *pModel, t3DObject *pObject, tChunk *pPreChunk)
{
int buffer[50000] = {0}; // 用于读入不需要的数据
// 对新的块分配存储空间
m_CurrentChunk = new tChunk;
// 继续读入块的内容直至本子块结束
while (pPreChunk->bytesRead < pPreChunk->length)
{ // 读入下一个块
ReadChunk(m_CurrentChunk);
// 区别读入是哪种块
switch (m_CurrentChunk->ID)
{
case OBJ_MESH: // 正读入的是一个新块
// 使用递归函数调用，处理该新块
ReadNextObjChunk(pModel, pObject, m_CurrentChunk);
break;
case OBJ_VERTICES: // 读入是对象顶点
ReadVertices(pObject, m_CurrentChunk);
break;
case OBJ_FACES: // 读入的是对象的面
ReadVertexIndices(pObject, m_CurrentChunk);
break;
case OBJ_MATERIAL: // 读入的是对象的材质名称
// 该块保存了对象材质的名称，可能是一个颜色，也可能是一个纹理映射。同时在该块中也保存了
// 纹理对象所赋予的面
// 下面读入对象的材质名称
ReadObjMat(pModel, pObject, m_CurrentChunk);
break;
case OBJ_UV: // 读入对象的UV纹理坐标
// 读入对象的UV纹理坐标
ReadUVCoordinates(pObject, m_CurrentChunk);
break;
default:
// 略过不需要读入的块
m_CurrentChunk->bytesRead += fread(buffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
}
// 添加从最后块中读入的字节数到前面的读入的字节中
pPreChunk->bytesRead += m_CurrentChunk->bytesRead;
}
// 释放当前块的内存空间，并把当前块设置为前面块
delete m_CurrentChunk;
m_CurrentChunk = pPreChunk;
}
void Loaders::t3DSLoader::ProcessNextObjectChunk(t3DModel *pModel, t3DObject *pObject, tChunk *pPreviousChunk)
{
m_CurrentChunk = new tChunk;
while (pPreviousChunk->bytesRead < pPreviousChunk->length)
{
ReadChunk(m_CurrentChunk);
switch (m_CurrentChunk->ID)
{
case OBJECT_MESH:
ProcessNextObjectChunk(pModel, pObject, m_CurrentChunk);
break;
case OBJECT_VERTICES:
ReadVertices(pObject, m_CurrentChunk);
break;
case OBJECT_FACES:
ReadVertexIndices(pObject, m_CurrentChunk);
break;
case OBJECT_MATERIAL:
ReadObjectMaterial(pModel, pObject, m_CurrentChunk);
break;
case OBJECT_UV:
ReadUVCoordinates(pObject, m_CurrentChunk);
break;
default:
m_CurrentChunk->bytesRead += fread(gBuffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
}
pPreviousChunk->bytesRead += m_CurrentChunk->bytesRead;
}
delete m_CurrentChunk;
m_CurrentChunk = pPreviousChunk;
}
