static Lib3dsBool
layer_fog_read(Lib3dsLayerFog *fog, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
Lib3dsBool have_lin=LIB3DS_FALSE;
if (!lib3ds_chunk_read_start(&c, LIB3DS_LAYER_FOG, io)) {
return(LIB3DS_FALSE);
}
fog->near_y=lib3ds_io_read_float(io);
fog->far_y=lib3ds_io_read_float(io);
fog->density=lib3ds_io_read_float(io);
fog->flags=lib3ds_io_read_dword(io);
lib3ds_chunk_read_tell(&c, io);
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_LIN_COLOR_F:
lib3ds_io_read_rgb(io, fog->col);
have_lin=LIB3DS_TRUE;
break;
case LIB3DS_COLOR_F:
lib3ds_io_read_rgb(io, fog->col);
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static void
solid_bgnd_read(Lib3dsBackground *background, Lib3dsIo *io) {
Lib3dsChunk c;
uint16_t chunk;
int have_lin = FALSE;
lib3ds_chunk_read_start(&c, CHK_SOLID_BGND, io);
while ((chunk = lib3ds_chunk_read_next(&c, io)) != 0) {
switch (chunk) {
case CHK_LIN_COLOR_F:
lib3ds_io_read_rgb(io, background->solid_color);
have_lin = TRUE;
break;
case CHK_COLOR_F:
lib3ds_io_read_rgb(io, background->solid_color);
break;
default:
lib3ds_chunk_unknown(chunk, io);
}
}
lib3ds_chunk_read_end(&c, io);
}
static Lib3dsBool
solid_bgnd_read(Lib3dsBackground *background, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
Lib3dsBool have_lin=LIB3DS_FALSE;
(void)have_lin;
if (!lib3ds_chunk_read_start(&c, LIB3DS_SOLID_BGND, io)) {
return(LIB3DS_FALSE);
}
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_LIN_COLOR_F:
lib3ds_io_read_rgb(io, background->solid.col);
have_lin=LIB3DS_TRUE;
break;
case LIB3DS_COLOR_F:
lib3ds_io_read_rgb(io, background->solid.col);
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static void
layer_fog_read(Lib3dsAtmosphere *at, Lib3dsIo *io)
{
Lib3dsChunk c;
uint16_t chunk;
int have_lin = FALSE;
lib3ds_chunk_read_start(&c, CHK_LAYER_FOG, io);
at->layer_fog_near_y = lib3ds_io_read_float(io);
at->layer_fog_far_y = lib3ds_io_read_float(io);
at->layer_fog_density = lib3ds_io_read_float(io);
at->layer_fog_flags = lib3ds_io_read_dword(io);
lib3ds_chunk_read_tell(&c, io);
while ((chunk = lib3ds_chunk_read_next(&c, io)) != 0)
{
switch (chunk)
{
case CHK_LIN_COLOR_F:
lib3ds_io_read_rgb(io, at->layer_fog_color);
have_lin = TRUE;
break;
case CHK_COLOR_F:
lib3ds_io_read_rgb(io, at->layer_fog_color);
break;
default:
lib3ds_chunk_unknown(chunk, io);
}
}
lib3ds_chunk_read_end(&c, io);
}
static Lib3dsBool
v_gradient_read(Lib3dsBackground *background, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
int index[2];
Lib3dsRgb col[2][3];
int have_lin=0;
if (!lib3ds_chunk_read_start(&c, LIB3DS_V_GRADIENT, io)) {
return(LIB3DS_FALSE);
}
background->gradient.percent=lib3ds_io_read_float(io);
lib3ds_chunk_read_tell(&c, io);
index[0]=index[1]=0;
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_COLOR_F:
lib3ds_io_read_rgb(io, col[0][index[0]]);
index[0]++;
break;
case LIB3DS_LIN_COLOR_F:
lib3ds_io_read_rgb(io, col[1][index[1]]);
index[1]++;
have_lin=1;
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
{
int i;
for (i=0; i<3; ++i) {
background->gradient.top[i]=col[have_lin][0][i];
background->gradient.middle[i]=col[have_lin][1][i];
background->gradient.bottom[i]=col[have_lin][2][i];
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static void
v_gradient_read(Lib3dsBackground *background, Lib3dsIo *io) {
Lib3dsChunk c;
uint16_t chunk;
int index[2];
float col[2][3][3];
int have_lin = 0;
lib3ds_chunk_read_start(&c, CHK_V_GRADIENT, io);
background->gradient_percent = lib3ds_io_read_float(io);
lib3ds_chunk_read_tell(&c, io);
index[0] = index[1] = 0;
while ((chunk = lib3ds_chunk_read_next(&c, io)) != 0) {
switch (chunk) {
case CHK_COLOR_F:
lib3ds_io_read_rgb(io, col[0][index[0]]);
index[0]++;
break;
case CHK_LIN_COLOR_F:
lib3ds_io_read_rgb(io, col[1][index[1]]);
index[1]++;
have_lin = 1;
break;
default:
lib3ds_chunk_unknown(chunk, io);
}
}
{
int i;
for (i = 0; i < 3; ++i) {
background->gradient_top[i] = col[have_lin][0][i];
background->gradient_middle[i] = col[have_lin][1][i];
background->gradient_bottom[i] = col[have_lin][2][i];
}
}
lib3ds_chunk_read_end(&c, io);
}