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-/*
-Open Asset Import Library (assimp)
-----------------------------------------------------------------------
-
-Copyright (c) 2006-2022, assimp team
-
-All rights reserved.
-
-Redistribution and use of this software in source and binary forms,
-with or without modification, are permitted provided that the
-following conditions are met:
-
-* Redistributions of source code must retain the above
- copyright notice, this list of conditions and the
- following disclaimer.
-
-* Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the
- following disclaimer in the documentation and/or other
- materials provided with the distribution.
-
-* Neither the name of the assimp team, nor the names of its
- contributors may be used to endorse or promote products
- derived from this software without specific prior
- written permission of the assimp team.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-----------------------------------------------------------------------
-*/
-
-/** @file Base class of all import post processing steps */
-#ifndef INCLUDED_AI_BASEPROCESS_H
-#define INCLUDED_AI_BASEPROCESS_H
-
-#include <assimp/GenericProperty.h>
-
-#include <map>
-
-struct aiScene;
-
-namespace Assimp {
-
-class Importer;
-
-// ---------------------------------------------------------------------------
-/** Helper class to allow post-processing steps to interact with each other.
- *
- * The class maintains a simple property list that can be used by pp-steps
- * to provide additional information to other steps. This is primarily
- * intended for cross-step optimizations.
- */
-class SharedPostProcessInfo {
-public:
- struct Base {
- virtual ~Base() {}
- };
-
- //! Represents data that is allocated on the heap, thus needs to be deleted
- template <typename T>
- struct THeapData : public Base {
- explicit THeapData(T *in) :
- data(in) {}
-
- ~THeapData() {
- delete data;
- }
- T *data;
- };
-
- //! Represents static, by-value data not allocated on the heap
- template <typename T>
- struct TStaticData : public Base {
- explicit TStaticData(T in) :
- data(in) {}
-
- ~TStaticData() {}
-
- T data;
- };
-
- // some typedefs for cleaner code
- typedef unsigned int KeyType;
- typedef std::map<KeyType, Base *> PropertyMap;
-
-public:
- //! Destructor
- ~SharedPostProcessInfo() {
- Clean();
- }
-
- //! Remove all stored properties from the table
- void Clean() {
- // invoke the virtual destructor for all stored properties
- for (PropertyMap::iterator it = pmap.begin(), end = pmap.end();
- it != end; ++it) {
- delete (*it).second;
- }
- pmap.clear();
- }
-
- //! Add a heap property to the list
- template <typename T>
- void AddProperty(const char *name, T *in) {
- AddProperty(name, (Base *)new THeapData<T>(in));
- }
-
- //! Add a static by-value property to the list
- template <typename T>
- void AddProperty(const char *name, T in) {
- AddProperty(name, (Base *)new TStaticData<T>(in));
- }
-
- //! Get a heap property
- template <typename T>
- bool GetProperty(const char *name, T *&out) const {
- THeapData<T> *t = (THeapData<T> *)GetPropertyInternal(name);
- if (!t) {
- out = nullptr;
- return false;
- }
- out = t->data;
- return true;
- }
-
- //! Get a static, by-value property
- template <typename T>
- bool GetProperty(const char *name, T &out) const {
- TStaticData<T> *t = (TStaticData<T> *)GetPropertyInternal(name);
- if ( nullptr == t) {
- return false;
- }
- out = t->data;
- return true;
- }
-
- //! Remove a property of a specific type
- void RemoveProperty(const char *name) {
- SetGenericPropertyPtr<Base>(pmap, name, nullptr );
- }
-
-private:
- void AddProperty(const char *name, Base *data) {
- SetGenericPropertyPtr<Base>(pmap, name, data);
- }
-
- Base *GetPropertyInternal(const char *name) const {
- return GetGenericProperty<Base *>(pmap, name, nullptr );
- }
-
-private:
- //! Map of all stored properties
- PropertyMap pmap;
-};
-
-#define AI_SPP_SPATIAL_SORT "$Spat"
-
-// ---------------------------------------------------------------------------
-/** The BaseProcess defines a common interface for all post processing steps.
- * A post processing step is run after a successful import if the caller
- * specified the corresponding flag when calling ReadFile().
- * Enum #aiPostProcessSteps defines which flags are available.
- * After a successful import the Importer iterates over its internal array
- * of processes and calls IsActive() on each process to evaluate if the step
- * should be executed. If the function returns true, the class' Execute()
- * function is called subsequently.
- */
-class ASSIMP_API_WINONLY BaseProcess {
- friend class Importer;
-
-public:
- /** Constructor to be privately used by Importer */
- BaseProcess() AI_NO_EXCEPT;
-
- /** Destructor, private as well */
- virtual ~BaseProcess();
-
- // -------------------------------------------------------------------
- /** Returns whether the processing step is present in the given flag.
- * @param pFlags The processing flags the importer was called with. A
- * bitwise combination of #aiPostProcessSteps.
- * @return true if the process is present in this flag fields,
- * false if not.
- */
- virtual bool IsActive(unsigned int pFlags) const = 0;
-
- // -------------------------------------------------------------------
- /** Check whether this step expects its input vertex data to be
- * in verbose format. */
- virtual bool RequireVerboseFormat() const;
-
- // -------------------------------------------------------------------
- /** Executes the post processing step on the given imported data.
- * The function deletes the scene if the postprocess step fails (
- * the object pointer will be set to nullptr).
- * @param pImp Importer instance (pImp->mScene must be valid)
- */
- void ExecuteOnScene(Importer *pImp);
-
- // -------------------------------------------------------------------
- /** Called prior to ExecuteOnScene().
- * The function is a request to the process to update its configuration
- * basing on the Importer's configuration property list.
- */
- virtual void SetupProperties(const Importer *pImp);
-
- // -------------------------------------------------------------------
- /** Executes the post processing step on the given imported data.
- * A process should throw an ImportErrorException* if it fails.
- * This method must be implemented by deriving classes.
- * @param pScene The imported data to work at.
- */
- virtual void Execute(aiScene *pScene) = 0;
-
- // -------------------------------------------------------------------
- /** Assign a new SharedPostProcessInfo to the step. This object
- * allows multiple postprocess steps to share data.
- * @param sh May be nullptr
- */
- inline void SetSharedData(SharedPostProcessInfo *sh) {
- shared = sh;
- }
-
- // -------------------------------------------------------------------
- /** Get the shared data that is assigned to the step.
- */
- inline SharedPostProcessInfo *GetSharedData() {
- return shared;
- }
-
-protected:
- /** See the doc of #SharedPostProcessInfo for more details */
- SharedPostProcessInfo *shared;
-
- /** Currently active progress handler */
- ProgressHandler *progress;
-};
-
-} // end of namespace Assimp
-
-#endif // AI_BASEPROCESS_H_INC