/*!
* Read a signed byte from a file stream.
*/
int8_t
lib3ds_io_read_intb(Lib3dsIo *io) {
int8_t b;
assert(io);
lib3ds_io_read(io, &b, 1);
return(b);
}
/*!
* Read a byte from a file stream.
*/
uint8_t
lib3ds_io_read_byte(Lib3dsIo *io) {
uint8_t b;
assert(io);
lib3ds_io_read(io, &b, 1);
return(b);
}
/*!
* \ingroup io
*
* Read a signed byte from a file stream.
*/
Lib3dsIntb
lib3ds_io_read_intb(Lib3dsIo *io)
{
Lib3dsIntb b;
ASSERT(io);
lib3ds_io_read(io, &b, 1);
return(b);
}
/*!
* \ingroup io
*
* Read a byte from a file stream.
*/
Lib3dsByte
lib3ds_io_read_byte(Lib3dsIo *io)
{
Lib3dsByte b;
ASSERT(io);
lib3ds_io_read(io, &b, 1);
return(b);
}
/*!
* Read a signed word from a file stream in little endian format.
*/
int16_t
lib3ds_io_read_intw(Lib3dsIo *io) {
uint8_t b[2];
uint16_t w;
assert(io);
lib3ds_io_read(io, b, 2);
w = ((uint16_t)b[1] << 8) |
((uint16_t)b[0]);
return((int16_t)w);
}
/*!
* \ingroup io
*
* Read a signed word from a file stream in little endian format.
*/
Lib3dsIntw
lib3ds_io_read_intw(Lib3dsIo *io)
{
Lib3dsByte b[2];
Lib3dsWord w;
ASSERT(io);
lib3ds_io_read(io, b, 2);
w=((Lib3dsWord)b[1] << 8) |
((Lib3dsWord)b[0]);
return((Lib3dsIntw)w);
}
/**
* Read a word from a file stream in little endian format.
*/
Lib3dsWord
lib3ds_io_read_word(Lib3dsIo *io)
{
Lib3dsByte b[2];
Lib3dsWord w;
ASSERT(io);
lib3ds_io_read(io, b, 2);
w=((Lib3dsWord)b[1] << 8) |
((Lib3dsWord)b[0]);
return(w);
}
/*!
* Read a float from a file stream in little endian format.
*/
float
lib3ds_io_read_float(Lib3dsIo *io) {
uint8_t b[4];
Lib3dsDwordFloat d;
assert(io);
lib3ds_io_read(io, b, 4);
d.dword_value = ((uint32_t)b[3] << 24) |
((uint32_t)b[2] << 16) |
((uint32_t)b[1] << 8) |
((uint32_t)b[0]);
return d.float_value;
}
/*!
* Read a signed dword a from file stream in little endian format.
*/
int32_t
lib3ds_io_read_intd(Lib3dsIo *io) {
uint8_t b[4];
uint32_t d;
assert(io);
lib3ds_io_read(io, b, 4);
d = ((uint32_t)b[3] << 24) |
((uint32_t)b[2] << 16) |
((uint32_t)b[1] << 8) |
((uint32_t)b[0]);
return((int32_t)d);
}
/*!
* \ingroup io
*
* Read a float from a file stream in little endian format.
*/
Lib3dsFloat
lib3ds_io_read_float(Lib3dsIo *io)
{
Lib3dsByte b[4];
Lib3dsDword d;
ASSERT(io);
lib3ds_io_read(io, b, 4);
d=((Lib3dsDword)b[3] << 24) |
((Lib3dsDword)b[2] << 16) |
((Lib3dsDword)b[1] << 8) |
((Lib3dsDword)b[0]);
return(*((Lib3dsFloat*)&d));
}
/*!
* \ingroup io
*
* Read a signed dword a from file stream in little endian format.
*/
Lib3dsIntd
lib3ds_io_read_intd(Lib3dsIo *io)
{
Lib3dsByte b[4];
Lib3dsDword d;
ASSERT(io);
lib3ds_io_read(io, b, 4);
d=((Lib3dsDword)b[3] << 24) |
((Lib3dsDword)b[2] << 16) |
((Lib3dsDword)b[1] << 8) |
((Lib3dsDword)b[0]);
return((Lib3dsIntd)d);
}
/*!
* \ingroup io
*
* Read a float from a file stream in little endian format.
*/
Lib3dsFloat
lib3ds_io_read_float(Lib3dsIo *io)
{
Lib3dsByte b[4];
Lib3dsDwordFloat d;
ASSERT(io);
lib3ds_io_read(io, b, 4);
d.dword_value=((Lib3dsDword)b[3] << 24) |
((Lib3dsDword)b[2] << 16) |
((Lib3dsDword)b[1] << 8) |
((Lib3dsDword)b[0]);
return d.float_value;
}
/*!
* Read a zero-terminated string from a file stream.
*
* \param io IO input handle.
* \param s The buffer to store the read string.
* \param buflen Buffer length.
*
* \return True on success, False otherwise.
*/
void
lib3ds_io_read_string(Lib3dsIo *io, char *s, int buflen) {
char c;
int k = 0;
assert(io);
for (;;) {
if (lib3ds_io_read(io, &c, 1) != 1) {
lib3ds_io_read_error(io);
}
*s++ = c;
if (!c) {
break;
}
++k;
if (k >= buflen) {
lib3ds_io_log(io, LIB3DS_LOG_ERROR, "Invalid string in input stream.");
}
}
}
/*!
* \ingroup io
*
* Read a zero-terminated string from a file stream.
*
* \param io IO input handle.
* \param s The buffer to store the read string.
* \param buflen Buffer length.
*
* \return True on success, False otherwise.
*/
Lib3dsBool
lib3ds_io_read_string(Lib3dsIo *io, char *s, int buflen)
{
char c;
int k=0;
ASSERT(io);
for (;;) {
if (lib3ds_io_read(io, &c, 1)!=1) {
return LIB3DS_FALSE;
}
*s++ = c;
if (!c) {
break;
}
++k;
if (k>=buflen) {
return(LIB3DS_FALSE);
}
}
return(!lib3ds_io_error(io));
}
/*!
* \ingroup viewport
*/
Lib3dsBool
lib3ds_viewport_read(Lib3dsViewport *viewport, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
if (!lib3ds_chunk_read_start(&c, 0, io)) {
return(LIB3DS_FALSE);
}
switch (c.chunk) {
case LIB3DS_VIEWPORT_LAYOUT:
{
int cur=0;
viewport->layout.style=lib3ds_io_read_word(io);
viewport->layout.active=lib3ds_io_read_intw(io);
lib3ds_io_read_intw(io);
viewport->layout.swap=lib3ds_io_read_intw(io);
lib3ds_io_read_intw(io);
viewport->layout.swap_prior=lib3ds_io_read_intw(io);
viewport->layout.swap_view=lib3ds_io_read_intw(io);
lib3ds_chunk_read_tell(&c, io);
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_VIEWPORT_SIZE:
{
viewport->layout.position[0]=lib3ds_io_read_word(io);
viewport->layout.position[1]=lib3ds_io_read_word(io);
viewport->layout.size[0]=lib3ds_io_read_word(io);
viewport->layout.size[1]=lib3ds_io_read_word(io);
}
break;
case LIB3DS_VIEWPORT_DATA_3:
{
lib3ds_viewport_set_views(viewport,cur+1);
lib3ds_io_read_intw(io);
viewport->layout.viewL[cur].axis_lock=lib3ds_io_read_word(io);
viewport->layout.viewL[cur].position[0]=lib3ds_io_read_intw(io);
viewport->layout.viewL[cur].position[1]=lib3ds_io_read_intw(io);
viewport->layout.viewL[cur].size[0]=lib3ds_io_read_intw(io);
viewport->layout.viewL[cur].size[1]=lib3ds_io_read_intw(io);
viewport->layout.viewL[cur].type=lib3ds_io_read_word(io);
viewport->layout.viewL[cur].zoom=lib3ds_io_read_float(io);
lib3ds_io_read_vector(io, viewport->layout.viewL[cur].center);
viewport->layout.viewL[cur].horiz_angle=lib3ds_io_read_float(io);
viewport->layout.viewL[cur].vert_angle=lib3ds_io_read_float(io);
lib3ds_io_read(io, viewport->layout.viewL[cur].camera, 11);
++cur;
}
break;
case LIB3DS_VIEWPORT_DATA:
/* 3DS R2 & R3 chunk
unsupported */
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
}
break;
case LIB3DS_DEFAULT_VIEW:
{
memset(&viewport->default_view,0,sizeof(Lib3dsDefaultView));
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_VIEW_TOP:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_TOP;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_BOTTOM:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_BOTTOM;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_LEFT:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_LEFT;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_RIGHT:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_RIGHT;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_FRONT:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_FRONT;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_BACK:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_BACK;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_USER:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_USER;
lib3ds_io_read_vector(io, viewport->default_view.position);
viewport->default_view.width=lib3ds_io_read_float(io);
viewport->default_view.horiz_angle=lib3ds_io_read_float(io);
viewport->default_view.vert_angle=lib3ds_io_read_float(io);
viewport->default_view.roll_angle=lib3ds_io_read_float(io);
}
break;
case LIB3DS_VIEW_CAMERA:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_CAMERA;
lib3ds_io_read(io, viewport->default_view.camera, 11);
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
}
break;
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
