562 lines
24 KiB
C
562 lines
24 KiB
C
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2015, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/** @file cimport.h
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* @brief Defines the C-API to the Open Asset Import Library.
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*/
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#ifndef AI_ASSIMP_H_INC
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#define AI_ASSIMP_H_INC
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#include "types.h"
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#include <assimp/importerdesc.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct aiScene; // aiScene.h
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struct aiFileIO; // aiFileIO.h
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typedef void (*aiLogStreamCallback)(const char* /* message */, char* /* user */);
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// --------------------------------------------------------------------------------
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/** C-API: Represents a log stream. A log stream receives all log messages and
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* streams them _somewhere_.
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* @see aiGetPredefinedLogStream
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* @see aiAttachLogStream
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* @see aiDetachLogStream */
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// --------------------------------------------------------------------------------
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struct aiLogStream
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{
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/** callback to be called */
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aiLogStreamCallback callback;
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/** user data to be passed to the callback */
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char* user;
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};
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// --------------------------------------------------------------------------------
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/** C-API: Represents an opaque set of settings to be used during importing.
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* @see aiCreatePropertyStore
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* @see aiReleasePropertyStore
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* @see aiImportFileExWithProperties
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* @see aiSetPropertyInteger
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* @see aiSetPropertyFloat
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* @see aiSetPropertyString
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* @see aiSetPropertyMatrix
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*/
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// --------------------------------------------------------------------------------
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struct aiPropertyStore { char sentinel; };
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/** Our own C boolean type */
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typedef int aiBool;
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#define AI_FALSE 0
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#define AI_TRUE 1
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// --------------------------------------------------------------------------------
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/** Reads the given file and returns its content.
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*
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* If the call succeeds, the imported data is returned in an aiScene structure.
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* The data is intended to be read-only, it stays property of the ASSIMP
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* library and will be stable until aiReleaseImport() is called. After you're
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* done with it, call aiReleaseImport() to free the resources associated with
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* this file. If the import fails, NULL is returned instead. Call
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* aiGetErrorString() to retrieve a human-readable error text.
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* @param pFile Path and filename of the file to be imported,
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* expected to be a null-terminated c-string. NULL is not a valid value.
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* @param pFlags Optional post processing steps to be executed after
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* a successful import. Provide a bitwise combination of the
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* #aiPostProcessSteps flags.
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* @return Pointer to the imported data or NULL if the import failed.
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*/
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ASSIMP_API const C_STRUCT aiScene* aiImportFile(
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const char* pFile,
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unsigned int pFlags);
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// --------------------------------------------------------------------------------
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/** Reads the given file using user-defined I/O functions and returns
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* its content.
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*
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* If the call succeeds, the imported data is returned in an aiScene structure.
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* The data is intended to be read-only, it stays property of the ASSIMP
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* library and will be stable until aiReleaseImport() is called. After you're
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* done with it, call aiReleaseImport() to free the resources associated with
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* this file. If the import fails, NULL is returned instead. Call
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* aiGetErrorString() to retrieve a human-readable error text.
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* @param pFile Path and filename of the file to be imported,
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* expected to be a null-terminated c-string. NULL is not a valid value.
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* @param pFlags Optional post processing steps to be executed after
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* a successful import. Provide a bitwise combination of the
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* #aiPostProcessSteps flags.
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* @param pFS aiFileIO structure. Will be used to open the model file itself
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* and any other files the loader needs to open. Pass NULL to use the default
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* implementation.
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* @return Pointer to the imported data or NULL if the import failed.
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* @note Include <aiFileIO.h> for the definition of #aiFileIO.
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*/
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ASSIMP_API const C_STRUCT aiScene* aiImportFileEx(
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const char* pFile,
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unsigned int pFlags,
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C_STRUCT aiFileIO* pFS);
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// --------------------------------------------------------------------------------
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/** Same as #aiImportFileEx, but adds an extra parameter containing importer settings.
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*
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* @param pFile Path and filename of the file to be imported,
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* expected to be a null-terminated c-string. NULL is not a valid value.
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* @param pFlags Optional post processing steps to be executed after
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* a successful import. Provide a bitwise combination of the
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* #aiPostProcessSteps flags.
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* @param pFS aiFileIO structure. Will be used to open the model file itself
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* and any other files the loader needs to open. Pass NULL to use the default
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* implementation.
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* @param pProps #aiPropertyStore instance containing import settings.
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* @return Pointer to the imported data or NULL if the import failed.
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* @note Include <aiFileIO.h> for the definition of #aiFileIO.
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* @see aiImportFileEx
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*/
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ASSIMP_API const C_STRUCT aiScene* aiImportFileExWithProperties(
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const char* pFile,
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unsigned int pFlags,
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C_STRUCT aiFileIO* pFS,
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const C_STRUCT aiPropertyStore* pProps);
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// --------------------------------------------------------------------------------
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/** Reads the given file from a given memory buffer,
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*
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* If the call succeeds, the contents of the file are returned as a pointer to an
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* aiScene object. The returned data is intended to be read-only, the importer keeps
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* ownership of the data and will destroy it upon destruction. If the import fails,
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* NULL is returned.
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* A human-readable error description can be retrieved by calling aiGetErrorString().
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* @param pBuffer Pointer to the file data
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* @param pLength Length of pBuffer, in bytes
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* @param pFlags Optional post processing steps to be executed after
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* a successful import. Provide a bitwise combination of the
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* #aiPostProcessSteps flags. If you wish to inspect the imported
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* scene first in order to fine-tune your post-processing setup,
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* consider to use #aiApplyPostProcessing().
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* @param pHint An additional hint to the library. If this is a non empty string,
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* the library looks for a loader to support the file extension specified by pHint
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* and passes the file to the first matching loader. If this loader is unable to
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* completely the request, the library continues and tries to determine the file
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* format on its own, a task that may or may not be successful.
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* Check the return value, and you'll know ...
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* @return A pointer to the imported data, NULL if the import failed.
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*
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* @note This is a straightforward way to decode models from memory
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* buffers, but it doesn't handle model formats that spread their
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* data across multiple files or even directories. Examples include
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* OBJ or MD3, which outsource parts of their material info into
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* external scripts. If you need full functionality, provide
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* a custom IOSystem to make Assimp find these files and use
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* the regular aiImportFileEx()/aiImportFileExWithProperties() API.
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*/
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ASSIMP_API const C_STRUCT aiScene* aiImportFileFromMemory(
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const char* pBuffer,
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unsigned int pLength,
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unsigned int pFlags,
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const char* pHint);
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// --------------------------------------------------------------------------------
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/** Same as #aiImportFileFromMemory, but adds an extra parameter containing importer settings.
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*
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* @param pBuffer Pointer to the file data
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* @param pLength Length of pBuffer, in bytes
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* @param pFlags Optional post processing steps to be executed after
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* a successful import. Provide a bitwise combination of the
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* #aiPostProcessSteps flags. If you wish to inspect the imported
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* scene first in order to fine-tune your post-processing setup,
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* consider to use #aiApplyPostProcessing().
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* @param pHint An additional hint to the library. If this is a non empty string,
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* the library looks for a loader to support the file extension specified by pHint
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* and passes the file to the first matching loader. If this loader is unable to
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* completely the request, the library continues and tries to determine the file
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* format on its own, a task that may or may not be successful.
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* Check the return value, and you'll know ...
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* @param pProps #aiPropertyStore instance containing import settings.
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* @return A pointer to the imported data, NULL if the import failed.
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*
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* @note This is a straightforward way to decode models from memory
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* buffers, but it doesn't handle model formats that spread their
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* data across multiple files or even directories. Examples include
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* OBJ or MD3, which outsource parts of their material info into
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* external scripts. If you need full functionality, provide
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* a custom IOSystem to make Assimp find these files and use
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* the regular aiImportFileEx()/aiImportFileExWithProperties() API.
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* @see aiImportFileFromMemory
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*/
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ASSIMP_API const C_STRUCT aiScene* aiImportFileFromMemoryWithProperties(
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const char* pBuffer,
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unsigned int pLength,
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unsigned int pFlags,
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const char* pHint,
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const C_STRUCT aiPropertyStore* pProps);
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// --------------------------------------------------------------------------------
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/** Apply post-processing to an already-imported scene.
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*
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* This is strictly equivalent to calling #aiImportFile()/#aiImportFileEx with the
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* same flags. However, you can use this separate function to inspect the imported
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* scene first to fine-tune your post-processing setup.
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* @param pScene Scene to work on.
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* @param pFlags Provide a bitwise combination of the #aiPostProcessSteps flags.
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* @return A pointer to the post-processed data. Post processing is done in-place,
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* meaning this is still the same #aiScene which you passed for pScene. However,
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* _if_ post-processing failed, the scene could now be NULL. That's quite a rare
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* case, post processing steps are not really designed to 'fail'. To be exact,
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* the #aiProcess_ValidateDataStructure flag is currently the only post processing step
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* which can actually cause the scene to be reset to NULL.
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*/
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ASSIMP_API const C_STRUCT aiScene* aiApplyPostProcessing(
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const C_STRUCT aiScene* pScene,
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unsigned int pFlags);
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// --------------------------------------------------------------------------------
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/** Get one of the predefine log streams. This is the quick'n'easy solution to
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* access Assimp's log system. Attaching a log stream can slightly reduce Assimp's
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* overall import performance.
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*
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* Usage is rather simple (this will stream the log to a file, named log.txt, and
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* the stdout stream of the process:
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* @code
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* struct aiLogStream c;
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* c = aiGetPredefinedLogStream(aiDefaultLogStream_FILE,"log.txt");
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* aiAttachLogStream(&c);
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* c = aiGetPredefinedLogStream(aiDefaultLogStream_STDOUT,NULL);
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* aiAttachLogStream(&c);
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* @endcode
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*
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* @param pStreams One of the #aiDefaultLogStream enumerated values.
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* @param file Solely for the #aiDefaultLogStream_FILE flag: specifies the file to write to.
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* Pass NULL for all other flags.
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* @return The log stream. callback is set to NULL if something went wrong.
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*/
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ASSIMP_API C_STRUCT aiLogStream aiGetPredefinedLogStream(
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C_ENUM aiDefaultLogStream pStreams,
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const char* file);
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// --------------------------------------------------------------------------------
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/** Attach a custom log stream to the libraries' logging system.
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*
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* Attaching a log stream can slightly reduce Assimp's overall import
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* performance. Multiple log-streams can be attached.
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* @param stream Describes the new log stream.
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* @note To ensure proper destruction of the logging system, you need to manually
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* call aiDetachLogStream() on every single log stream you attach.
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* Alternatively (for the lazy folks) #aiDetachAllLogStreams is provided.
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*/
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ASSIMP_API void aiAttachLogStream(
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const C_STRUCT aiLogStream* stream);
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// --------------------------------------------------------------------------------
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/** Enable verbose logging. Verbose logging includes debug-related stuff and
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* detailed import statistics. This can have severe impact on import performance
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* and memory consumption. However, it might be useful to find out why a file
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* didn't read correctly.
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* @param d AI_TRUE or AI_FALSE, your decision.
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*/
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ASSIMP_API void aiEnableVerboseLogging(aiBool d);
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// --------------------------------------------------------------------------------
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/** Detach a custom log stream from the libraries' logging system.
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*
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* This is the counterpart of #aiAttachLogStream. If you attached a stream,
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* don't forget to detach it again.
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* @param stream The log stream to be detached.
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* @return AI_SUCCESS if the log stream has been detached successfully.
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* @see aiDetachAllLogStreams
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*/
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ASSIMP_API C_ENUM aiReturn aiDetachLogStream(
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const C_STRUCT aiLogStream* stream);
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// --------------------------------------------------------------------------------
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/** Detach all active log streams from the libraries' logging system.
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* This ensures that the logging system is terminated properly and all
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* resources allocated by it are actually freed. If you attached a stream,
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* don't forget to detach it again.
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* @see aiAttachLogStream
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* @see aiDetachLogStream
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*/
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ASSIMP_API void aiDetachAllLogStreams(void);
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// --------------------------------------------------------------------------------
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/** Releases all resources associated with the given import process.
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*
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* Call this function after you're done with the imported data.
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* @param pScene The imported data to release. NULL is a valid value.
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*/
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ASSIMP_API void aiReleaseImport(
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const C_STRUCT aiScene* pScene);
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// --------------------------------------------------------------------------------
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/** Returns the error text of the last failed import process.
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*
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* @return A textual description of the error that occurred at the last
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* import process. NULL if there was no error. There can't be an error if you
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* got a non-NULL #aiScene from #aiImportFile/#aiImportFileEx/#aiApplyPostProcessing.
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*/
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ASSIMP_API const char* aiGetErrorString();
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// --------------------------------------------------------------------------------
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/** Returns whether a given file extension is supported by ASSIMP
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*
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* @param szExtension Extension for which the function queries support for.
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* Must include a leading dot '.'. Example: ".3ds", ".md3"
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* @return AI_TRUE if the file extension is supported.
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*/
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ASSIMP_API aiBool aiIsExtensionSupported(
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const char* szExtension);
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// --------------------------------------------------------------------------------
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/** Get a list of all file extensions supported by ASSIMP.
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*
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* If a file extension is contained in the list this does, of course, not
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* mean that ASSIMP is able to load all files with this extension.
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* @param szOut String to receive the extension list.
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* Format of the list: "*.3ds;*.obj;*.dae". NULL is not a valid parameter.
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*/
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ASSIMP_API void aiGetExtensionList(
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C_STRUCT aiString* szOut);
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// --------------------------------------------------------------------------------
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/** Get the approximated storage required by an imported asset
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* @param pIn Input asset.
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* @param in Data structure to be filled.
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*/
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ASSIMP_API void aiGetMemoryRequirements(
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const C_STRUCT aiScene* pIn,
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C_STRUCT aiMemoryInfo* in);
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// --------------------------------------------------------------------------------
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/** Create an empty property store. Property stores are used to collect import
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* settings.
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* @return New property store. Property stores need to be manually destroyed using
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* the #aiReleasePropertyStore API function.
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*/
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ASSIMP_API C_STRUCT aiPropertyStore* aiCreatePropertyStore(void);
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// --------------------------------------------------------------------------------
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/** Delete a property store.
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* @param p Property store to be deleted.
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*/
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ASSIMP_API void aiReleasePropertyStore(C_STRUCT aiPropertyStore* p);
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// --------------------------------------------------------------------------------
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/** Set an integer property.
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*
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* This is the C-version of #Assimp::Importer::SetPropertyInteger(). In the C
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* interface, properties are always shared by all imports. It is not possible to
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* specify them per import.
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*
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* @param store Store to modify. Use #aiCreatePropertyStore to obtain a store.
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* @param szName Name of the configuration property to be set. All supported
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* public properties are defined in the config.h header file (AI_CONFIG_XXX).
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* @param value New value for the property
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*/
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ASSIMP_API void aiSetImportPropertyInteger(
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C_STRUCT aiPropertyStore* store,
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const char* szName,
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int value);
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// --------------------------------------------------------------------------------
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/** Set a floating-point property.
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*
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* This is the C-version of #Assimp::Importer::SetPropertyFloat(). In the C
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* interface, properties are always shared by all imports. It is not possible to
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* specify them per import.
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*
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* @param store Store to modify. Use #aiCreatePropertyStore to obtain a store.
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* @param szName Name of the configuration property to be set. All supported
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* public properties are defined in the config.h header file (AI_CONFIG_XXX).
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* @param value New value for the property
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*/
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ASSIMP_API void aiSetImportPropertyFloat(
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C_STRUCT aiPropertyStore* store,
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const char* szName,
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float value);
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// --------------------------------------------------------------------------------
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/** Set a string property.
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*
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* This is the C-version of #Assimp::Importer::SetPropertyString(). In the C
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* interface, properties are always shared by all imports. It is not possible to
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* specify them per import.
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*
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* @param store Store to modify. Use #aiCreatePropertyStore to obtain a store.
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* @param szName Name of the configuration property to be set. All supported
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* public properties are defined in the config.h header file (AI_CONFIG_XXX).
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* @param st New value for the property
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*/
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ASSIMP_API void aiSetImportPropertyString(
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C_STRUCT aiPropertyStore* store,
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const char* szName,
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const C_STRUCT aiString* st);
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// --------------------------------------------------------------------------------
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/** Set a matrix property.
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*
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* This is the C-version of #Assimp::Importer::SetPropertyMatrix(). In the C
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* interface, properties are always shared by all imports. It is not possible to
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* specify them per import.
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*
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* @param store Store to modify. Use #aiCreatePropertyStore to obtain a store.
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* @param szName Name of the configuration property to be set. All supported
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* public properties are defined in the config.h header file (AI_CONFIG_XXX).
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* @param mat New value for the property
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*/
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ASSIMP_API void aiSetImportPropertyMatrix(
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C_STRUCT aiPropertyStore* store,
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const char* szName,
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const C_STRUCT aiMatrix4x4* mat);
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// --------------------------------------------------------------------------------
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/** Construct a quaternion from a 3x3 rotation matrix.
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* @param quat Receives the output quaternion.
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* @param mat Matrix to 'quaternionize'.
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* @see aiQuaternion(const aiMatrix3x3& pRotMatrix)
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*/
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ASSIMP_API void aiCreateQuaternionFromMatrix(
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C_STRUCT aiQuaternion* quat,
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const C_STRUCT aiMatrix3x3* mat);
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// --------------------------------------------------------------------------------
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/** Decompose a transformation matrix into its rotational, translational and
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* scaling components.
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*
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* @param mat Matrix to decompose
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* @param scaling Receives the scaling component
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* @param rotation Receives the rotational component
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* @param position Receives the translational component.
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* @see aiMatrix4x4::Decompose (aiVector3D&, aiQuaternion&, aiVector3D&) const;
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*/
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ASSIMP_API void aiDecomposeMatrix(
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const C_STRUCT aiMatrix4x4* mat,
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C_STRUCT aiVector3D* scaling,
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C_STRUCT aiQuaternion* rotation,
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C_STRUCT aiVector3D* position);
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// --------------------------------------------------------------------------------
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/** Transpose a 4x4 matrix.
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* @param mat Pointer to the matrix to be transposed
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*/
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ASSIMP_API void aiTransposeMatrix4(
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C_STRUCT aiMatrix4x4* mat);
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// --------------------------------------------------------------------------------
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/** Transpose a 3x3 matrix.
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* @param mat Pointer to the matrix to be transposed
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*/
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ASSIMP_API void aiTransposeMatrix3(
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C_STRUCT aiMatrix3x3* mat);
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// --------------------------------------------------------------------------------
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/** Transform a vector by a 3x3 matrix
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* @param vec Vector to be transformed.
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* @param mat Matrix to transform the vector with.
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*/
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ASSIMP_API void aiTransformVecByMatrix3(
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C_STRUCT aiVector3D* vec,
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const C_STRUCT aiMatrix3x3* mat);
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// --------------------------------------------------------------------------------
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/** Transform a vector by a 4x4 matrix
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* @param vec Vector to be transformed.
|
|
* @param mat Matrix to transform the vector with.
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*/
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ASSIMP_API void aiTransformVecByMatrix4(
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C_STRUCT aiVector3D* vec,
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const C_STRUCT aiMatrix4x4* mat);
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|
// --------------------------------------------------------------------------------
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/** Multiply two 4x4 matrices.
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* @param dst First factor, receives result.
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* @param src Matrix to be multiplied with 'dst'.
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*/
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ASSIMP_API void aiMultiplyMatrix4(
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C_STRUCT aiMatrix4x4* dst,
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const C_STRUCT aiMatrix4x4* src);
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|
// --------------------------------------------------------------------------------
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/** Multiply two 3x3 matrices.
|
|
* @param dst First factor, receives result.
|
|
* @param src Matrix to be multiplied with 'dst'.
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|
*/
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ASSIMP_API void aiMultiplyMatrix3(
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C_STRUCT aiMatrix3x3* dst,
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|
const C_STRUCT aiMatrix3x3* src);
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|
// --------------------------------------------------------------------------------
|
|
/** Get a 3x3 identity matrix.
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|
* @param mat Matrix to receive its personal identity
|
|
*/
|
|
ASSIMP_API void aiIdentityMatrix3(
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|
C_STRUCT aiMatrix3x3* mat);
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// --------------------------------------------------------------------------------
|
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/** Get a 4x4 identity matrix.
|
|
* @param mat Matrix to receive its personal identity
|
|
*/
|
|
ASSIMP_API void aiIdentityMatrix4(
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|
C_STRUCT aiMatrix4x4* mat);
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// --------------------------------------------------------------------------------
|
|
/** Returns the number of import file formats available in the current Assimp build.
|
|
* Use aiGetImportFormatDescription() to retrieve infos of a specific import format.
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|
*/
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|
ASSIMP_API size_t aiGetImportFormatCount(void);
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// --------------------------------------------------------------------------------
|
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/** Returns a description of the nth import file format. Use #aiGetImportFormatCount()
|
|
* to learn how many import formats are supported.
|
|
* @param pIndex Index of the import format to retrieve information for. Valid range is
|
|
* 0 to #aiGetImportFormatCount()
|
|
* @return A description of that specific import format. NULL if pIndex is out of range.
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*/
|
|
ASSIMP_API const C_STRUCT aiImporterDesc* aiGetImportFormatDescription( size_t pIndex);
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#ifdef __cplusplus
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}
|
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#endif
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#endif // AI_ASSIMP_H_INC
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