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|
/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s): Esteban Tovagliari, Cedric Paille, Kevin Dietrich
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "../ABC_alembic.h"
#include <Alembic/AbcMaterial/IMaterial.h>
#include "abc_archive.h"
#include "abc_camera.h"
#include "abc_curves.h"
#include "abc_hair.h"
#include "abc_mesh.h"
#include "abc_nurbs.h"
#include "abc_points.h"
#include "abc_transform.h"
#include "abc_util.h"
extern "C" {
#include "MEM_guardedalloc.h"
#include "DNA_cachefile_types.h"
#include "DNA_curve_types.h"
#include "DNA_modifier_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "BKE_cachefile.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_context.h"
#include "BKE_curve.h"
#include "BKE_depsgraph.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_scene.h"
/* SpaceType struct has a member called 'new' which obviously conflicts with C++
* so temporarily redefining the new keyword to make it compile. */
#define new extern_new
#include "BKE_screen.h"
#undef new
#include "BLI_fileops.h"
#include "BLI_ghash.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_path_util.h"
#include "BLI_string.h"
#include "WM_api.h"
#include "WM_types.h"
}
using Alembic::Abc::Int32ArraySamplePtr;
using Alembic::Abc::ObjectHeader;
using Alembic::AbcGeom::MetaData;
using Alembic::AbcGeom::P3fArraySamplePtr;
using Alembic::AbcGeom::kWrapExisting;
using Alembic::AbcGeom::ICamera;
using Alembic::AbcGeom::ICurves;
using Alembic::AbcGeom::ICurvesSchema;
using Alembic::AbcGeom::IFaceSet;
using Alembic::AbcGeom::ILight;
using Alembic::AbcGeom::INuPatch;
using Alembic::AbcGeom::IObject;
using Alembic::AbcGeom::IPoints;
using Alembic::AbcGeom::IPointsSchema;
using Alembic::AbcGeom::IPolyMesh;
using Alembic::AbcGeom::IPolyMeshSchema;
using Alembic::AbcGeom::ISampleSelector;
using Alembic::AbcGeom::ISubD;
using Alembic::AbcGeom::IV2fGeomParam;
using Alembic::AbcGeom::IXform;
using Alembic::AbcGeom::IXformSchema;
using Alembic::AbcGeom::N3fArraySamplePtr;
using Alembic::AbcGeom::XformSample;
using Alembic::AbcGeom::ICompoundProperty;
using Alembic::AbcGeom::IN3fArrayProperty;
using Alembic::AbcGeom::IN3fGeomParam;
using Alembic::AbcGeom::V3fArraySamplePtr;
using Alembic::AbcMaterial::IMaterial;
struct AbcArchiveHandle {
int unused;
};
ABC_INLINE ArchiveReader *archive_from_handle(AbcArchiveHandle *handle)
{
return reinterpret_cast<ArchiveReader *>(handle);
}
ABC_INLINE AbcArchiveHandle *handle_from_archive(ArchiveReader *archive)
{
return reinterpret_cast<AbcArchiveHandle *>(archive);
}
//#define USE_NURBS
/* NOTE: this function is similar to visit_objects below, need to keep them in
* sync. */
static void gather_objects_paths(const IObject &object, ListBase *object_paths)
{
if (!object.valid()) {
return;
}
for (int i = 0; i < object.getNumChildren(); ++i) {
IObject child = object.getChild(i);
if (!child.valid()) {
continue;
}
bool get_path = false;
const MetaData &md = child.getMetaData();
if (IXform::matches(md)) {
/* Check whether or not this object is a Maya locator, which is
* similar to empties used as parent object in Blender. */
if (has_property(child.getProperties(), "locator")) {
get_path = true;
}
else {
/* Avoid creating an empty object if the child of this transform
* is not a transform (that is an empty). */
if (child.getNumChildren() == 1) {
if (IXform::matches(child.getChild(0).getMetaData())) {
get_path = true;
}
#if 0
else {
std::cerr << "Skipping " << child.getFullName() << '\n';
}
#endif
}
else {
get_path = true;
}
}
}
else if (IPolyMesh::matches(md)) {
get_path = true;
}
else if (ISubD::matches(md)) {
get_path = true;
}
else if (INuPatch::matches(md)) {
#ifdef USE_NURBS
get_path = true;
#endif
}
else if (ICamera::matches(md)) {
get_path = true;
}
else if (IPoints::matches(md)) {
get_path = true;
}
else if (IMaterial::matches(md)) {
/* Pass for now. */
}
else if (ILight::matches(md)) {
/* Pass for now. */
}
else if (IFaceSet::matches(md)) {
/* Pass, those are handled in the mesh reader. */
}
else if (ICurves::matches(md)) {
get_path = true;
}
else {
assert(false);
}
if (get_path) {
AlembicObjectPath *abc_path = static_cast<AlembicObjectPath *>(
MEM_callocN(sizeof(AlembicObjectPath), "AlembicObjectPath"));
BLI_strncpy(abc_path->path, child.getFullName().c_str(), PATH_MAX);
BLI_addtail(object_paths, abc_path);
}
gather_objects_paths(child, object_paths);
}
}
AbcArchiveHandle *ABC_create_handle(const char *filename, ListBase *object_paths)
{
ArchiveReader *archive = new ArchiveReader(filename);
if (!archive->valid()) {
delete archive;
return NULL;
}
if (object_paths) {
gather_objects_paths(archive->getTop(), object_paths);
}
return handle_from_archive(archive);
}
void ABC_free_handle(AbcArchiveHandle *handle)
{
delete archive_from_handle(handle);
}
int ABC_get_version()
{
return ALEMBIC_LIBRARY_VERSION;
}
static void find_iobject(const IObject &object, IObject &ret,
const std::string &path)
{
if (!object.valid()) {
return;
}
std::vector<std::string> tokens;
split(path, '/', tokens);
IObject tmp = object;
std::vector<std::string>::iterator iter;
for (iter = tokens.begin(); iter != tokens.end(); ++iter) {
IObject child = tmp.getChild(*iter);
tmp = child;
}
ret = tmp;
}
struct ExportJobData {
Scene *scene;
Main *bmain;
char filename[1024];
ExportSettings settings;
short *stop;
short *do_update;
float *progress;
bool was_canceled;
};
static void export_startjob(void *customdata, short *stop, short *do_update, float *progress)
{
ExportJobData *data = static_cast<ExportJobData *>(customdata);
data->stop = stop;
data->do_update = do_update;
data->progress = progress;
/* XXX annoying hack: needed to prevent data corruption when changing
* scene frame in separate threads
*/
G.is_rendering = true;
BKE_spacedata_draw_locks(true);
G.is_break = false;
try {
Scene *scene = data->scene;
AbcExporter exporter(scene, data->filename, data->settings);
const int orig_frame = CFRA;
data->was_canceled = false;
exporter(data->bmain, *data->progress, data->was_canceled);
if (CFRA != orig_frame) {
CFRA = orig_frame;
BKE_scene_update_for_newframe(data->bmain->eval_ctx, data->bmain,
scene, scene->lay);
}
}
catch (const std::exception &e) {
std::cerr << "Abc Export error: " << e.what() << '\n';
}
catch (...) {
std::cerr << "Abc Export error\n";
}
}
static void export_endjob(void *customdata)
{
ExportJobData *data = static_cast<ExportJobData *>(customdata);
if (data->was_canceled && BLI_exists(data->filename)) {
BLI_delete(data->filename, false, false);
}
G.is_rendering = false;
BKE_spacedata_draw_locks(false);
}
void ABC_export(
Scene *scene,
bContext *C,
const char *filepath,
const struct AlembicExportParams *params)
{
ExportJobData *job = static_cast<ExportJobData *>(MEM_mallocN(sizeof(ExportJobData), "ExportJobData"));
job->scene = scene;
job->bmain = CTX_data_main(C);
BLI_strncpy(job->filename, filepath, 1024);
job->settings.scene = job->scene;
job->settings.frame_start = params->frame_start;
job->settings.frame_end = params->frame_end;
job->settings.frame_step_xform = params->frame_step_xform;
job->settings.frame_step_shape = params->frame_step_shape;
job->settings.shutter_open = params->shutter_open;
job->settings.shutter_close = params->shutter_close;
job->settings.selected_only = params->selected_only;
job->settings.export_face_sets = params->face_sets;
job->settings.export_normals = params->normals;
job->settings.export_uvs = params->uvs;
job->settings.export_vcols = params->vcolors;
job->settings.apply_subdiv = params->apply_subdiv;
job->settings.flatten_hierarchy = params->flatten_hierarchy;
job->settings.visible_layers_only = params->visible_layers_only;
job->settings.renderable_only = params->renderable_only;
job->settings.use_subdiv_schema = params->use_subdiv_schema;
job->settings.export_ogawa = (params->compression_type == ABC_ARCHIVE_OGAWA);
job->settings.pack_uv = params->packuv;
job->settings.global_scale = params->global_scale;
if (job->settings.frame_start > job->settings.frame_end) {
std::swap(job->settings.frame_start, job->settings.frame_end);
}
wmJob *wm_job = WM_jobs_get(CTX_wm_manager(C),
CTX_wm_window(C),
job->scene,
"Alembic Export",
WM_JOB_PROGRESS,
WM_JOB_TYPE_ALEMBIC);
/* setup job */
WM_jobs_customdata_set(wm_job, job, MEM_freeN);
WM_jobs_timer(wm_job, 0.1, NC_SCENE | ND_FRAME, NC_SCENE | ND_FRAME);
WM_jobs_callbacks(wm_job, export_startjob, NULL, NULL, export_endjob);
WM_jobs_start(CTX_wm_manager(C), wm_job);
}
/* ********************** Import file ********************** */
static void visit_object(const IObject &object,
std::vector<AbcObjectReader *> &readers,
GHash *parent_map,
ImportSettings &settings)
{
if (!object.valid()) {
return;
}
for (int i = 0; i < object.getNumChildren(); ++i) {
IObject child = object.getChild(i);
if (!child.valid()) {
continue;
}
AbcObjectReader *reader = NULL;
const MetaData &md = child.getMetaData();
if (IXform::matches(md)) {
bool create_xform = false;
/* Check whether or not this object is a Maya locator, which is
* similar to empties used as parent object in Blender. */
if (has_property(child.getProperties(), "locator")) {
create_xform = true;
}
else {
/* Avoid creating an empty object if the child of this transform
* is not a transform (that is an empty). */
if (child.getNumChildren() == 1) {
if (IXform::matches(child.getChild(0).getMetaData())) {
create_xform = true;
}
#if 0
else {
std::cerr << "Skipping " << child.getFullName() << '\n';
}
#endif
}
else {
create_xform = true;
}
}
if (create_xform) {
reader = new AbcEmptyReader(child, settings);
}
}
else if (IPolyMesh::matches(md)) {
reader = new AbcMeshReader(child, settings);
}
else if (ISubD::matches(md)) {
reader = new AbcSubDReader(child, settings);
}
else if (INuPatch::matches(md)) {
#ifdef USE_NURBS
/* TODO(kevin): importing cyclic NURBS from other software crashes
* at the moment. This is due to the fact that NURBS in other
* software have duplicated points which causes buffer overflows in
* Blender. Need to figure out exactly how these points are
* duplicated, in all cases (cyclic U, cyclic V, and cyclic UV).
* Until this is fixed, disabling NURBS reading. */
reader = new AbcNurbsReader(child, settings);
#endif
}
else if (ICamera::matches(md)) {
reader = new AbcCameraReader(child, settings);
}
else if (IPoints::matches(md)) {
reader = new AbcPointsReader(child, settings);
}
else if (IMaterial::matches(md)) {
/* Pass for now. */
}
else if (ILight::matches(md)) {
/* Pass for now. */
}
else if (IFaceSet::matches(md)) {
/* Pass, those are handled in the mesh reader. */
}
else if (ICurves::matches(md)) {
reader = new AbcCurveReader(child, settings);
}
else {
assert(false);
}
if (reader) {
readers.push_back(reader);
AlembicObjectPath *abc_path = static_cast<AlembicObjectPath *>(
MEM_callocN(sizeof(AlembicObjectPath), "AlembicObjectPath"));
BLI_strncpy(abc_path->path, child.getFullName().c_str(), PATH_MAX);
BLI_addtail(&settings.cache_file->object_paths, abc_path);
/* Cast to `void *` explicitly to avoid compiler errors because it
* is a `const char *` which the compiler cast to `const void *`
* instead of the expected `void *`. */
BLI_ghash_insert(parent_map, (void *)child.getFullName().c_str(), reader);
}
visit_object(child, readers, parent_map, settings);
}
}
enum {
ABC_NO_ERROR = 0,
ABC_ARCHIVE_FAIL,
};
struct ImportJobData {
Main *bmain;
Scene *scene;
char filename[1024];
ImportSettings settings;
GHash *parent_map;
std::vector<AbcObjectReader *> readers;
short *stop;
short *do_update;
float *progress;
char error_code;
bool was_cancelled;
};
ABC_INLINE bool is_mesh_and_strands(const IObject &object)
{
bool has_mesh = false;
bool has_curve = false;
for (int i = 0; i < object.getNumChildren(); ++i) {
const IObject &child = object.getChild(i);
if (!child.valid()) {
continue;
}
const MetaData &md = child.getMetaData();
if (IPolyMesh::matches(md)) {
has_mesh = true;
}
else if (ISubD::matches(md)) {
has_mesh = true;
}
else if (ICurves::matches(md)) {
has_curve = true;
}
else if (IPoints::matches(md)) {
has_curve = true;
}
}
return has_mesh && has_curve;
}
static void import_startjob(void *user_data, short *stop, short *do_update, float *progress)
{
ImportJobData *data = static_cast<ImportJobData *>(user_data);
data->stop = stop;
data->do_update = do_update;
data->progress = progress;
ArchiveReader *archive = new ArchiveReader(data->filename);
if (!archive->valid()) {
delete archive;
data->error_code = ABC_ARCHIVE_FAIL;
return;
}
CacheFile *cache_file = static_cast<CacheFile *>(BKE_cachefile_add(data->bmain, BLI_path_basename(data->filename)));
/* Decrement the ID ref-count because it is going to be incremented for each
* modifier and constraint that it will be attached to, so since currently
* it is not used by anyone, its use count will off by one. */
id_us_min(&cache_file->id);
cache_file->is_sequence = data->settings.is_sequence;
cache_file->scale = data->settings.scale;
cache_file->handle = handle_from_archive(archive);
BLI_strncpy(cache_file->filepath, data->filename, 1024);
data->settings.cache_file = cache_file;
*data->do_update = true;
*data->progress = 0.05f;
data->parent_map = BLI_ghash_str_new("alembic parent ghash");
/* Parse Alembic Archive. */
visit_object(archive->getTop(), data->readers, data->parent_map, data->settings);
if (G.is_break) {
data->was_cancelled = true;
return;
}
*data->do_update = true;
*data->progress = 0.1f;
/* Create objects and set scene frame range. */
const float size = static_cast<float>(data->readers.size());
size_t i = 0;
chrono_t min_time = std::numeric_limits<chrono_t>::max();
chrono_t max_time = std::numeric_limits<chrono_t>::min();
std::vector<AbcObjectReader *>::iterator iter;
for (iter = data->readers.begin(); iter != data->readers.end(); ++iter) {
AbcObjectReader *reader = *iter;
if (reader->valid()) {
reader->readObjectData(data->bmain, 0.0f);
reader->readObjectMatrix(0.0f);
min_time = std::min(min_time, reader->minTime());
max_time = std::max(max_time, reader->maxTime());
}
*data->progress = 0.1f + 0.6f * (++i / size);
*data->do_update = true;
if (G.is_break) {
data->was_cancelled = true;
return;
}
}
if (data->settings.set_frame_range) {
Scene *scene = data->scene;
if (data->settings.is_sequence) {
SFRA = data->settings.offset;
EFRA = SFRA + (data->settings.sequence_len - 1);
CFRA = SFRA;
}
else if (min_time < max_time) {
SFRA = min_time * FPS;
EFRA = max_time * FPS;
CFRA = SFRA;
}
}
/* Setup parentship. */
i = 0;
for (iter = data->readers.begin(); iter != data->readers.end(); ++iter) {
const AbcObjectReader *reader = *iter;
const AbcObjectReader *parent_reader = NULL;
const IObject &iobject = reader->iobject();
IObject parent = iobject.getParent();
if (!IXform::matches(iobject.getHeader())) {
/* In the case of an non XForm node, the parent is the transform
* matrix of the data itself, so we get the its grand parent.
*/
/* Special case with object only containing a mesh and some strands,
* we want both objects to be parented to the same object. */
if (!is_mesh_and_strands(parent)) {
parent = parent.getParent();
}
}
parent_reader = reinterpret_cast<AbcObjectReader *>(
BLI_ghash_lookup(data->parent_map, parent.getFullName().c_str()));
if (parent_reader) {
Object *parent = parent_reader->object();
if (parent != NULL && reader->object() != parent) {
Object *ob = reader->object();
ob->parent = parent;
}
}
*data->progress = 0.7f + 0.3f * (++i / size);
*data->do_update = true;
if (G.is_break) {
data->was_cancelled = true;
return;
}
}
}
static void import_endjob(void *user_data)
{
ImportJobData *data = static_cast<ImportJobData *>(user_data);
std::vector<AbcObjectReader *>::iterator iter;
/* Delete objects on cancelation. */
if (data->was_cancelled) {
for (iter = data->readers.begin(); iter != data->readers.end(); ++iter) {
Object *ob = (*iter)->object();
if (ob->data) {
BKE_libblock_free_us(data->bmain, ob->data);
ob->data = NULL;
}
BKE_libblock_free_us(data->bmain, ob);
}
}
else {
/* Add object to scene. */
BKE_scene_base_deselect_all(data->scene);
for (iter = data->readers.begin(); iter != data->readers.end(); ++iter) {
Object *ob = (*iter)->object();
ob->lay = data->scene->lay;
BKE_scene_base_add(data->scene, ob);
DAG_id_tag_update_ex(data->bmain, &ob->id, OB_RECALC_OB | OB_RECALC_DATA | OB_RECALC_TIME);
}
DAG_relations_tag_update(data->bmain);
}
for (iter = data->readers.begin(); iter != data->readers.end(); ++iter) {
delete *iter;
}
if (data->parent_map) {
BLI_ghash_free(data->parent_map, NULL, NULL);
}
switch (data->error_code) {
default:
case ABC_NO_ERROR:
break;
case ABC_ARCHIVE_FAIL:
WM_report(RPT_ERROR, "Could not open Alembic archive for reading! See console for detail.");
break;
}
WM_main_add_notifier(NC_SCENE | ND_FRAME, data->scene);
}
static void import_freejob(void *user_data)
{
ImportJobData *data = static_cast<ImportJobData *>(user_data);
delete data;
}
void ABC_import(bContext *C, const char *filepath, float scale, bool is_sequence, bool set_frame_range, int sequence_len, int offset, bool validate_meshes)
{
/* Using new here since MEM_* funcs do not call ctor to properly initialize
* data. */
ImportJobData *job = new ImportJobData();
job->bmain = CTX_data_main(C);
job->scene = CTX_data_scene(C);
BLI_strncpy(job->filename, filepath, 1024);
job->settings.scale = scale;
job->settings.is_sequence = is_sequence;
job->settings.set_frame_range = set_frame_range;
job->settings.sequence_len = sequence_len;
job->settings.offset = offset;
job->settings.validate_meshes = validate_meshes;
job->parent_map = NULL;
job->error_code = ABC_NO_ERROR;
job->was_cancelled = false;
G.is_break = false;
wmJob *wm_job = WM_jobs_get(CTX_wm_manager(C),
CTX_wm_window(C),
job->scene,
"Alembic Import",
WM_JOB_PROGRESS,
WM_JOB_TYPE_ALEMBIC);
/* setup job */
WM_jobs_customdata_set(wm_job, job, import_freejob);
WM_jobs_timer(wm_job, 0.1, NC_SCENE | ND_FRAME, NC_SCENE | ND_FRAME);
WM_jobs_callbacks(wm_job, import_startjob, NULL, NULL, import_endjob);
WM_jobs_start(CTX_wm_manager(C), wm_job);
}
/* ******************************* */
void ABC_get_transform(AbcArchiveHandle *handle, Object *ob, const char *object_path, float r_mat[4][4], float time, float scale)
{
ArchiveReader *archive = archive_from_handle(handle);
if (!archive || !archive->valid()) {
return;
}
IObject tmp;
find_iobject(archive->getTop(), tmp, object_path);
IXform ixform;
if (IXform::matches(tmp.getHeader())) {
ixform = IXform(tmp, kWrapExisting);
}
else {
ixform = IXform(tmp.getParent(), kWrapExisting);
}
IXformSchema schema = ixform.getSchema();
if (!schema.valid()) {
return;
}
ISampleSelector sample_sel(time);
create_input_transform(sample_sel, ixform, ob, r_mat, scale);
}
/* ***************************************** */
static bool check_smooth_poly_flag(DerivedMesh *dm)
{
MPoly *mpolys = dm->getPolyArray(dm);
for (int i = 0, e = dm->getNumPolys(dm); i < e; ++i) {
MPoly &poly = mpolys[i];
if ((poly.flag & ME_SMOOTH) != 0) {
return true;
}
}
return false;
}
static void set_smooth_poly_flag(DerivedMesh *dm)
{
MPoly *mpolys = dm->getPolyArray(dm);
for (int i = 0, e = dm->getNumPolys(dm); i < e; ++i) {
MPoly &poly = mpolys[i];
poly.flag |= ME_SMOOTH;
}
}
static void *add_customdata_cb(void *user_data, const char *name, int data_type)
{
DerivedMesh *dm = static_cast<DerivedMesh *>(user_data);
CustomDataType cd_data_type = static_cast<CustomDataType>(data_type);
void *cd_ptr = NULL;
if (ELEM(cd_data_type, CD_MLOOPUV, CD_MLOOPCOL)) {
cd_ptr = CustomData_get_layer_named(dm->getLoopDataLayout(dm), cd_data_type, name);
if (cd_ptr == NULL) {
cd_ptr = CustomData_add_layer_named(dm->getLoopDataLayout(dm),
cd_data_type,
CD_DEFAULT,
NULL,
dm->getNumLoops(dm),
name);
}
}
return cd_ptr;
}
ABC_INLINE CDStreamConfig get_config(DerivedMesh *dm)
{
CDStreamConfig config;
config.user_data = dm;
config.mvert = dm->getVertArray(dm);
config.mloop = dm->getLoopArray(dm);
config.mpoly = dm->getPolyArray(dm);
config.totloop = dm->getNumLoops(dm);
config.totpoly = dm->getNumPolys(dm);
config.loopdata = dm->getLoopDataLayout(dm);
config.add_customdata_cb = add_customdata_cb;
return config;
}
static DerivedMesh *read_mesh_sample(DerivedMesh *dm, const IObject &iobject, const float time, int read_flag)
{
IPolyMesh mesh(iobject, kWrapExisting);
IPolyMeshSchema schema = mesh.getSchema();
ISampleSelector sample_sel(time);
const IPolyMeshSchema::Sample sample = schema.getValue(sample_sel);
const P3fArraySamplePtr &positions = sample.getPositions();
const Alembic::Abc::Int32ArraySamplePtr &face_indices = sample.getFaceIndices();
const Alembic::Abc::Int32ArraySamplePtr &face_counts = sample.getFaceCounts();
DerivedMesh *new_dm = NULL;
/* Only read point data when streaming meshes, unless we need to create new ones. */
ImportSettings settings;
settings.read_flag |= read_flag;
if (dm->getNumVerts(dm) != positions->size()) {
new_dm = CDDM_from_template(dm,
positions->size(),
0,
0,
face_indices->size(),
face_counts->size());
settings.read_flag |= MOD_MESHSEQ_READ_ALL;
}
CDStreamConfig config = get_config(new_dm ? new_dm : dm);
bool do_normals = false;
read_mesh_sample(&settings, schema, sample_sel, config, do_normals);
if (new_dm) {
/* Check if we had ME_SMOOTH flag set to restore it. */
if (!do_normals && check_smooth_poly_flag(dm)) {
set_smooth_poly_flag(new_dm);
}
CDDM_calc_normals(new_dm);
CDDM_calc_edges(new_dm);
return new_dm;
}
if (do_normals) {
CDDM_calc_normals(dm);
}
return dm;
}
using Alembic::AbcGeom::ISubDSchema;
static DerivedMesh *read_subd_sample(DerivedMesh *dm, const IObject &iobject, const float time, int read_flag)
{
ISubD mesh(iobject, kWrapExisting);
ISubDSchema schema = mesh.getSchema();
ISampleSelector sample_sel(time);
const ISubDSchema::Sample sample = schema.getValue(sample_sel);
const P3fArraySamplePtr &positions = sample.getPositions();
const Alembic::Abc::Int32ArraySamplePtr &face_indices = sample.getFaceIndices();
const Alembic::Abc::Int32ArraySamplePtr &face_counts = sample.getFaceCounts();
DerivedMesh *new_dm = NULL;
ImportSettings settings;
settings.read_flag |= read_flag;
if (dm->getNumVerts(dm) != positions->size()) {
new_dm = CDDM_from_template(dm,
positions->size(),
0,
0,
face_indices->size(),
face_counts->size());
settings.read_flag |= MOD_MESHSEQ_READ_ALL;
}
/* Only read point data when streaming meshes, unless we need to create new ones. */
CDStreamConfig config = get_config(new_dm ? new_dm : dm);
read_subd_sample(&settings, schema, sample_sel, config);
if (new_dm) {
/* Check if we had ME_SMOOTH flag set to restore it. */
if (check_smooth_poly_flag(dm)) {
set_smooth_poly_flag(new_dm);
}
CDDM_calc_normals(new_dm);
CDDM_calc_edges(new_dm);
return new_dm;
}
return dm;
}
static DerivedMesh *read_points_sample(DerivedMesh *dm, const IObject &iobject, const float time)
{
IPoints points(iobject, kWrapExisting);
IPointsSchema schema = points.getSchema();
ISampleSelector sample_sel(time);
const IPointsSchema::Sample sample = schema.getValue(sample_sel);
const P3fArraySamplePtr &positions = sample.getPositions();
DerivedMesh *new_dm = NULL;
if (dm->getNumVerts(dm) != positions->size()) {
new_dm = CDDM_new(positions->size(), 0, 0, 0, 0);
}
CDStreamConfig config = get_config(new_dm ? new_dm : dm);
read_points_sample(schema, sample_sel, config, time);
return new_dm ? new_dm : dm;
}
/* NOTE: Alembic only stores data about control points, but the DerivedMesh
* passed from the cache modifier contains the displist, which has more data
* than the control points, so to avoid corrupting the displist we modify the
* object directly and create a new DerivedMesh from that. Also we might need to
* create new or delete existing NURBS in the curve.
*/
static DerivedMesh *read_curves_sample(Object *ob, const IObject &iobject, const float time)
{
ICurves points(iobject, kWrapExisting);
ICurvesSchema schema = points.getSchema();
ISampleSelector sample_sel(time);
const ICurvesSchema::Sample sample = schema.getValue(sample_sel);
const P3fArraySamplePtr &positions = sample.getPositions();
const Int32ArraySamplePtr num_vertices = sample.getCurvesNumVertices();
int vertex_idx = 0;
int curve_idx = 0;
Curve *curve = static_cast<Curve *>(ob->data);
const int curve_count = BLI_listbase_count(&curve->nurb);
if (curve_count != num_vertices->size()) {
BKE_nurbList_free(&curve->nurb);
read_curve_sample(curve, schema, time);
}
else {
Nurb *nurbs = static_cast<Nurb *>(curve->nurb.first);
for (; nurbs; nurbs = nurbs->next, ++curve_idx) {
const int totpoint = (*num_vertices)[curve_idx];
if (nurbs->bp) {
BPoint *point = nurbs->bp;
for (int i = 0; i < totpoint; ++i, ++point, ++vertex_idx) {
const Imath::V3f &pos = (*positions)[vertex_idx];
copy_yup_zup(point->vec, pos.getValue());
}
}
else if (nurbs->bezt) {
BezTriple *bezier = nurbs->bezt;
for (int i = 0; i < totpoint; ++i, ++bezier, ++vertex_idx) {
const Imath::V3f &pos = (*positions)[vertex_idx];
copy_yup_zup(bezier->vec[1], pos.getValue());
}
}
}
}
return CDDM_from_curve(ob);
}
DerivedMesh *ABC_read_mesh(AbcArchiveHandle *handle,
Object *ob,
DerivedMesh *dm,
const char *object_path,
const float time,
const char **err_str,
int read_flag)
{
ArchiveReader *archive = archive_from_handle(handle);
if (!archive || !archive->valid()) {
*err_str = "Invalid archive!";
return NULL;
}
IObject iobject;
find_iobject(archive->getTop(), iobject, object_path);
if (!iobject.valid()) {
*err_str = "Invalid object: verify object path";
return NULL;
}
const ObjectHeader &header = iobject.getHeader();
if (IPolyMesh::matches(header)) {
if (ob->type != OB_MESH) {
*err_str = "Object type mismatch: object path points to a mesh!";
return NULL;
}
return read_mesh_sample(dm, iobject, time, read_flag);
}
else if (ISubD::matches(header)) {
if (ob->type != OB_MESH) {
*err_str = "Object type mismatch: object path points to a subdivision mesh!";
return NULL;
}
return read_subd_sample(dm, iobject, time, read_flag);
}
else if (IPoints::matches(header)) {
if (ob->type != OB_MESH) {
*err_str = "Object type mismatch: object path points to a point cloud (requires a mesh object)!";
return NULL;
}
return read_points_sample(dm, iobject, time);
}
else if (ICurves::matches(header)) {
if (ob->type != OB_CURVE) {
*err_str = "Object type mismatch: object path points to a curve!";
return NULL;
}
return read_curves_sample(ob, iobject, time);
}
*err_str = "Unsupported object type: verify object path"; // or poke developer
return NULL;
}
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