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Diffstat (limited to 'source/blender/io/alembic/intern/abc_util.h')
| -rw-r--r-- | source/blender/io/alembic/intern/abc_util.h | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/source/blender/io/alembic/intern/abc_util.h b/source/blender/io/alembic/intern/abc_util.h new file mode 100644 index 00000000000..0b3462c2132 --- /dev/null +++ b/source/blender/io/alembic/intern/abc_util.h @@ -0,0 +1,236 @@ +/* + * 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. + */ + +/** \file + * \ingroup balembic + */ + +#ifndef __ABC_UTIL_H__ +#define __ABC_UTIL_H__ + +#include <Alembic/Abc/All.h> +#include <Alembic/AbcGeom/All.h> + +#ifdef _MSC_VER +# define ABC_INLINE static __forceinline +#else +# define ABC_INLINE static inline +#endif + +/** + * \brief The CacheReader struct is only used for anonymous pointers, + * to interface between C and C++ code. This library only creates + * pointers to AbcObjectReader (or subclasses thereof). + */ +struct CacheReader { + int unused; +}; + +using Alembic::Abc::chrono_t; + +class AbcObjectReader; +struct ImportSettings; + +struct ID; +struct Object; + +std::string get_id_name(const ID *const id); +std::string get_id_name(const Object *const ob); +std::string get_object_dag_path_name(const Object *const ob, Object *dupli_parent); + +/* Convert from float to Alembic matrix representations. Does NOT convert from Z-up to Y-up. */ +Imath::M44d convert_matrix_datatype(float mat[4][4]); +/* Convert from Alembic to float matrix representations. Does NOT convert from Y-up to Z-up. */ +void convert_matrix_datatype(const Imath::M44d &xform, float r_mat[4][4]); + +typedef enum { + ABC_MATRIX_WORLD = 1, + ABC_MATRIX_LOCAL = 2, +} AbcMatrixMode; +void create_transform_matrix(Object *obj, + float r_transform_mat[4][4], + AbcMatrixMode mode, + Object *proxy_from); + +void split(const std::string &s, const char delim, std::vector<std::string> &tokens); + +template<class TContainer> bool begins_with(const TContainer &input, const TContainer &match) +{ + return input.size() >= match.size() && std::equal(match.begin(), match.end(), input.begin()); +} + +template<typename Schema> +void get_min_max_time_ex(const Schema &schema, chrono_t &min, chrono_t &max) +{ + const Alembic::Abc::TimeSamplingPtr &time_samp = schema.getTimeSampling(); + + if (!schema.isConstant()) { + const size_t num_samps = schema.getNumSamples(); + + if (num_samps > 0) { + const chrono_t min_time = time_samp->getSampleTime(0); + min = std::min(min, min_time); + + const chrono_t max_time = time_samp->getSampleTime(num_samps - 1); + max = std::max(max, max_time); + } + } +} + +template<typename Schema> +void get_min_max_time(const Alembic::AbcGeom::IObject &object, + const Schema &schema, + chrono_t &min, + chrono_t &max) +{ + get_min_max_time_ex(schema, min, max); + + const Alembic::AbcGeom::IObject &parent = object.getParent(); + if (parent.valid() && Alembic::AbcGeom::IXform::matches(parent.getMetaData())) { + Alembic::AbcGeom::IXform xform(parent, Alembic::AbcGeom::kWrapExisting); + get_min_max_time_ex(xform.getSchema(), min, max); + } +} + +bool has_property(const Alembic::Abc::ICompoundProperty &prop, const std::string &name); + +float get_weight_and_index(float time, + const Alembic::AbcCoreAbstract::TimeSamplingPtr &time_sampling, + int samples_number, + Alembic::AbcGeom::index_t &i0, + Alembic::AbcGeom::index_t &i1); + +AbcObjectReader *create_reader(const Alembic::AbcGeom::IObject &object, ImportSettings &settings); + +/* ************************** */ + +/* TODO(kevin): for now keeping these transformations hardcoded to make sure + * everything works properly, and also because Alembic is almost exclusively + * used in Y-up software, but eventually they'll be set by the user in the UI + * like other importers/exporters do, to support other axis. */ + +/* Copy from Y-up to Z-up. */ + +ABC_INLINE void copy_zup_from_yup(float zup[3], const float yup[3]) +{ + const float old_yup1 = yup[1]; /* in case zup == yup */ + zup[0] = yup[0]; + zup[1] = -yup[2]; + zup[2] = old_yup1; +} + +ABC_INLINE void copy_zup_from_yup(short zup[3], const short yup[3]) +{ + const short old_yup1 = yup[1]; /* in case zup == yup */ + zup[0] = yup[0]; + zup[1] = -yup[2]; + zup[2] = old_yup1; +} + +/* Copy from Z-up to Y-up. */ + +ABC_INLINE void copy_yup_from_zup(float yup[3], const float zup[3]) +{ + const float old_zup1 = zup[1]; /* in case yup == zup */ + yup[0] = zup[0]; + yup[1] = zup[2]; + yup[2] = -old_zup1; +} + +ABC_INLINE void copy_yup_from_zup(short yup[3], const short zup[3]) +{ + const short old_zup1 = zup[1]; /* in case yup == zup */ + yup[0] = zup[0]; + yup[1] = zup[2]; + yup[2] = -old_zup1; +} + +/* Names are given in (dst, src) order, just like + * the parameters of copy_m44_axis_swap() */ +typedef enum { + ABC_ZUP_FROM_YUP = 1, + ABC_YUP_FROM_ZUP = 2, +} AbcAxisSwapMode; + +/* Create a rotation matrix for each axis from euler angles. + * Euler angles are swapped to change coordinate system. */ +void create_swapped_rotation_matrix(float rot_x_mat[3][3], + float rot_y_mat[3][3], + float rot_z_mat[3][3], + const float euler[3], + AbcAxisSwapMode mode); + +void copy_m44_axis_swap(float dst_mat[4][4], float src_mat[4][4], AbcAxisSwapMode mode); + +/* *************************** */ + +#undef ABC_DEBUG_TIME + +class ScopeTimer { + const char *m_message; + double m_start; + + public: + ScopeTimer(const char *message); + ~ScopeTimer(); +}; + +#ifdef ABC_DEBUG_TIME +# define SCOPE_TIMER(message) ScopeTimer prof(message) +#else +# define SCOPE_TIMER(message) +#endif + +/* *************************** */ + +/** + * Utility class whose purpose is to more easily log related information. An + * instance of the SimpleLogger can be created in any context, and will hold a + * copy of all the strings passed to its output stream. + * + * Different instances of the class may be accessed from different threads, + * although accessing the same instance from different threads will lead to race + * conditions. + */ +class SimpleLogger { + std::ostringstream m_stream; + + public: + /** + * Return a copy of the string contained in the SimpleLogger's stream. + */ + std::string str() const; + + /** + * Remove the bits set on the SimpleLogger's stream and clear its string. + */ + void clear(); + + /** + * Return a reference to the SimpleLogger's stream, in order to e.g. push + * content into it. + */ + std::ostringstream &stream(); +}; + +#define ABC_LOG(logger) logger.stream() + +/** + * Pass the content of the logger's stream to the specified std::ostream. + */ +std::ostream &operator<<(std::ostream &os, const SimpleLogger &logger); + +#endif /* __ABC_UTIL_H__ */ |