C++ (Cpp) lib3ds_io_tell示例

示例#1

文件： lib3ds_chunk.c 项目： 151706061/OpenSceneGraph

void
lib3ds_chunk_write_start(Lib3dsChunk *c, Lib3dsIo *io) {
    assert(c);
    c->size = 0;
    c->cur = lib3ds_io_tell(io);
    lib3ds_io_write_word(io, c->chunk);
    lib3ds_io_write_dword(io, c->size);
}

示例#2

文件： lib3ds_chunk.c 项目： 151706061/OpenSceneGraph

void
lib3ds_chunk_write_end(Lib3dsChunk *c, Lib3dsIo *io) {
    assert(c);
    c->size = lib3ds_io_tell(io) - c->cur;
    lib3ds_io_seek(io, c->cur + 2, LIB3DS_SEEK_SET);
    lib3ds_io_write_dword(io, c->size);
    c->cur += c->size;
    lib3ds_io_seek(io, c->cur, LIB3DS_SEEK_SET);
}

示例#3

文件： chunk.c 项目： Michael-Lfx/OpenGL-ES-3.0-Cookbook

/*!
 * \ingroup chunk
 */
Lib3dsBool
lib3ds_chunk_write_start(Lib3dsChunk *c, Lib3dsIo *io)
{
  ASSERT(c);
  c->size=0;
  c->cur=lib3ds_io_tell(io);
  if (!lib3ds_io_write_word(io, c->chunk)) {
    return(LIB3DS_FALSE);
  }
  if (!lib3ds_io_write_dword(io, c->size)) {
    return(LIB3DS_FALSE);
  }
  return(LIB3DS_TRUE);
}

示例#4

文件： lib3ds_chunk.c 项目： 151706061/OpenSceneGraph

/*!
 * Reads a 3d-Studio chunk header from a little endian file stream.
 *
 * \param c  The chunk to store the data.
 * \param io The file stream.
 *
 * \return   True on success, False otherwise.
 */
void
lib3ds_chunk_read(Lib3dsChunk *c, Lib3dsIo *io) {
    assert(c);
    assert(io);
    c->cur = lib3ds_io_tell(io);
    c->chunk = lib3ds_io_read_word(io);
    c->size = lib3ds_io_read_dword(io);
    c->end = c->cur + c->size;
    c->cur += 6;
    if (c->size < 6) {
        lib3ds_io_log(io, LIB3DS_LOG_ERROR, "Invalid chunk header.");
    }

}

示例#5

文件： chunk.c 项目： Michael-Lfx/OpenGL-ES-3.0-Cookbook

/*!
 * \ingroup chunk
 *
 * Reads a 3d-Studio chunk header from a little endian file stream.
 *
 * \param c  The chunk to store the data.
 * \param io The file stream.
 *
 * \return   True on success, False otherwise.
 */
Lib3dsBool
lib3ds_chunk_read(Lib3dsChunk *c, Lib3dsIo *io)
{
  ASSERT(c);
  ASSERT(io);
  c->cur=lib3ds_io_tell(io);
  c->chunk=lib3ds_io_read_word(io);
  c->size=lib3ds_io_read_dword(io);
  c->end=c->cur+c->size;
  c->cur+=6;
  if (lib3ds_io_error(io) || (c->size<6)) {
    return(LIB3DS_FALSE);
  }
  return(LIB3DS_TRUE);
  
}

示例#6

文件： chunk.c 项目： Michael-Lfx/OpenGL-ES-3.0-Cookbook

/*!
 * \ingroup chunk
 */
Lib3dsBool
lib3ds_chunk_write_end(Lib3dsChunk *c, Lib3dsIo *io)
{
  ASSERT(c);
  c->size=lib3ds_io_tell(io) - c->cur;
  lib3ds_io_seek(io, c->cur+2, LIB3DS_SEEK_SET);
  if (!lib3ds_io_write_dword(io, c->size)) {
    LIB3DS_ERROR_LOG;
    return(LIB3DS_FALSE);
  }

  c->cur+=c->size;
  lib3ds_io_seek(io, c->cur, LIB3DS_SEEK_SET);
  if (lib3ds_io_error(io)) {
    LIB3DS_ERROR_LOG;
    return(LIB3DS_FALSE);
  }
  return(LIB3DS_TRUE);
}

示例#7

文件： chunk.c 项目： Michael-Lfx/OpenGL-ES-3.0-Cookbook

/*!
 * \ingroup chunk
 */
void
lib3ds_chunk_read_tell(Lib3dsChunk *c, Lib3dsIo *io)
{
  c->cur=lib3ds_io_tell(io);
}