add assimp submodule

10 files changed, 1298 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/test/regression/.project b/src/mesh/assimp-master/test/regression/.project
new file mode 100644
index 0000000..04b40e5
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>assimp-regression</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.python.pydev.PyDevBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.python.pydev.pythonNature</nature>
+	</natures>
+</projectDescription>
diff --git a/src/mesh/assimp-master/test/regression/.pydevproject b/src/mesh/assimp-master/test/regression/.pydevproject
new file mode 100644
index 0000000..841206b
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/.pydevproject
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?eclipse-pydev version="1.0"?>
+
+<pydev_project>
+<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 3.0</pydev_property>
+<pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
+</pydev_project>
diff --git a/src/mesh/assimp-master/test/regression/README.txt b/src/mesh/assimp-master/test/regression/README.txt
new file mode 100644
index 0000000..a37da92
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/README.txt
@@ -0,0 +1,95 @@
+Asset Importer Lib Regression Test Suite
+========================================
+
+1) How does it work?
+---------------------------------------------------------------------------------
+run.py checks all model in the <root>/test/models* folders and compares the result
+against a regression database provided with assimp (db.zip). A few failures
+are totally fine (see sections 7+). You need to worry if a huge
+majority of all files in a particular format (or post-processing configuration)
+fails as this might be a sign of a recent regression in assimp's codebase or
+gross incompatibility with your system or compiler.
+
+2) What do I need?
+---------------------------------------------------------------------------------
+ - You need Python installed (2.7+, 3.x). On Windows, run the scripts using "py".
+ - You need to build the assimp command line tool (ASSIMP_BUILD_ASSIMP_TOOLS
+   CMake build flag). Both run.py and gen_db.py take the full path to the binary
+   as first command line parameter.
+
+3) How to add more test files?
+---------------------------------------------------------------------------------
+Use the following procedure:
+ - Verify the correctness of your assimp build - run the regression suite.
+   DO NOT continue if more tests fail than usual.
+ - Add your additional test files to <root>/test/models/<fileformat>, where
+   <fileformat> is the file type (typically the file extension).
+ - If you test file does not meet the BSD license requirements, add it to
+   <root>/test/models-nonbsd/<fileformat> so people know to be careful with it.
+ - Rebuild the regression database:
+   "gen_db.py <binary> -ixyz" where .xyz is the file extension of the new file.
+ - Run the regression suite again. There should be no new failures and the new
+   file should not be among the failures.
+ - Include the db.zip file with your Pull Request. Travis CI enforces a passing
+   regression suite (with offenders whitelisted as a last resort).
+
+4) I made a change/fix/patch to a loader, how to update the database?
+---------------------------------------------------------------------------------
+ - Rebuild the regression database using "gen_db.py <binary> -ixyz"
+   where .xyz is the file extension for which the loader was patched.
+ - Run the regression suite again. There should be no new failures and the new
+   file should not be among the failures.
+ - Include the db.zip file with your Pull Request. Travis CI enforces a passing
+   regression suite (with offenders whitelisted as a last resort).
+
+5) How to add my whole model repository to the database?
+---------------------------------------------------------------------------------
+
+Edit the reg_settings.py file and add the path to your repository to
+<<model_directories>>. Then, rebuild the database.
+
+6) So what is actually tested?
+---------------------------------------------------------------------------------
+The regression database includes mini dumps of the aiScene data structure, i.e.
+the scene hierarchy plus the sizes of all data arrays MUST match. Floating-point
+data buffers, such as vertex positions are handled less strictly: min, max and
+average values are stored with low precision. This takes hardware- or
+compiler-specific differences in floating-point computations into account.
+Generally, almost all significant regressions will be detected while the
+number of false positives is relatively low.
+
+7) The test suite fails, what do do?
+---------------------------------------------------------------------------------
+Get back to <root>/test/results and look at regression_suite_failures.txt.
+It contains a list of all files which failed the test. Failing dumps are copied to
+<root>/test/results/tmp. Both an EXPECTED and an ACTUAL file is produced per test.
+The output of "assimp cmpdump" is written to regressions_suite_output.txt. Grep
+for the file name in question and locate the log for the failed comparison. It
+contains a full trace of which scene elements have been compared before, which
+makes it reasonably easy to locate the offending field.
+
+8) fp:fast vs fp:precise fails the test suite (same for gcc equivalents)
+---------------------------------------------------------------------------------
+As mentioned above, floating-point inaccuracies between differently optimized
+builds are not considered regressions and all float comparisons done by the test
+suite involve an epsilon to accommodate. However compiler settings that allow
+compilers to perform non-IEEE754 compliant optimizations can cause arbitrary
+failures in the test suite. Even if the compiler is configured to be IEE754
+comformant, there is lots of code in assimp that leaves the compiler a choice
+and different compilers make different choices (for example the precision of
+float intermediaries is implementation-specified).
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/src/mesh/assimp-master/test/regression/ai_regression_ui.py b/src/mesh/assimp-master/test/regression/ai_regression_ui.py
new file mode 100644
index 0000000..30c9b68
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/ai_regression_ui.py
@@ -0,0 +1,293 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+# ---------------------------------------------------------------------------
+from tkinter import *
+import sys
+import os
+import platform
+import run
+import subprocess
+import result_checker as rc
+
+INFO  = 0
+WARN  = 1
+ERROR = 2
+
+# -------------------------------------------------------------------------------
+def log( sev, msg ):
+    """
+    This function is used to log info, warnings and errors.
+    """
+    logEntry = ""
+    if sev == 0:
+        logEntry = logEntry + "[INFO]: "
+    elif sev == 1:
+        logEntry = logEntry + "[WARN]: "
+    elif sev == 2:
+        logEntry = logEntry + "[ERR] : "
+    logEntry = logEntry + str( msg )
+    print( logEntry )
+
+# -------------------------------------------------------------------------------
+class BaseDialog( Toplevel ):
+    """
+    Helper base class for dialogs used in the UI.
+    """
+
+    def __init__(self, parent, title = None, buttons=""):
+        """
+        Constructor
+        """
+        Toplevel.__init__( self, parent )
+        self.transient(parent)
+
+        if title:
+            self.title(title)
+
+        self.parent = parent
+        self.result = None
+        body = Frame(self)
+        self.initial_focus = self.body(body)
+        body.pack(padx=5, pady=5)
+        self.buttonbox(buttons)
+        self.grab_set()
+        if not self.initial_focus:
+            self.initial_focus = self
+        self.protocol("WM_DELETE_WINDOW", self.cancel)
+        self.geometry("+%d+%d" % (parent.winfo_rootx() + 50,
+                                  parent.winfo_rooty() + 50))
+        self.initial_focus.focus_set()
+        self.wait_window(self)
+
+    def body(self, master):
+        # create dialog body.  return widget that should have
+        # initial focus.  this method should be overridden
+        pass
+
+    def buttonbox(self, buttons):
+        # add standard button box. override if you don't want the
+        # standard buttons
+        box = Frame(self)
+        w = Button(box, text="OK", width=40, command=self.ok, default=ACTIVE)
+        w.pack(side=LEFT, padx=5, pady=5)
+        self.bind("<Return>", self.ok)
+        box.pack()
+
+    def ok(self, event=None):
+        if not self.validate():
+            self.initial_focus.focus_set()  # put focus back
+            return
+
+        self.withdraw()
+        self.update_idletasks()
+        self.apply()
+        self.cancel()
+
+    def cancel(self, event=None):
+        # put focus back to the parent window
+        self.parent.focus_set()
+        self.destroy()
+
+    def validate(self):
+        return 1  # override
+
+    def apply(self):
+        pass  # override
+
+# -------------------------------------------------------------------------------
+class VersionDialog( BaseDialog ):
+    """
+    This class is used to create the info dialog.
+    """
+    def body(self, master):
+        # info will be read from assimp command line tool
+        version = "Asset importer lib version unknown"
+        exe = run.getEnvVar( "assimp_path" )
+        if len( exe ) != 0:
+            command = [exe, "version" ]
+            log( INFO, "command = " + str(command))
+            stdout = subprocess.check_output(command)
+            for line in stdout.splitlines():
+                pos = str(line).find( "Version" )
+                if -1 != pos:
+                    version = line
+        Label(master, text=version).pack()
+
+    def apply(self):
+        pass
+
+# -------------------------------------------------------------------------------
+class SetupDialog( BaseDialog ):
+    """
+    This class is used to create the setup dialog.
+    """
+    def body(self, master):
+        Label(master, justify=LEFT, text="Assimp: " ).grid(row=0, column=0)
+        Label(master, justify=LEFT, text=run.getEnvVar("assimp_path")).grid(row=0, column=1)
+        Label(master, text="New executable:").grid(row=1)
+        self.e1 = Entry(master)
+        self.e1.grid(row=1, column=1)
+        return self.e1  # initial focus
+
+    def apply(self):
+        exe = str( self.e1.get() )
+        if len( exe )  == 0:
+            return 0
+        if os.path.isfile( exe ):
+            log( INFO, "Set executable at " + exe)
+            self.assimp_bin_path = exe
+            run.setEnvVar("assimp_path", self.assimp_bin_path)
+        else:
+            log( ERROR, "Executable not found at "+exe )
+        return 0
+
+# -------------------------------------------------------------------------------
+class RegDialog( object ):
+    """
+    This class is used to create a simplified user interface for running the regression test suite.
+    """
+    
+    def __init__(self, bin_path ):
+        """
+        Constructs the dialog, you can define which executable shal be used.
+        @param  bin_path    [in] Path to assimp binary.
+        """
+        run.setEnvVar( "assimp_path", bin_path )
+        self.b_run_ = None
+        self.b_update_ = None
+        self.b_res_checker_ = None
+        self.b_quit_ = None
+        if platform.system() == "Windows":
+            self.editor = "notepad"
+        elif platform.system() == "Linux":
+            self.editor = "vim"
+        self.root = None
+        self.width=40
+        
+    def run_reg(self):
+        log(INFO, "Starting regression test suite.")
+        run.run_test()
+        rc.run()
+        self.b_update_.config( state=ACTIVE  )
+        return 0
+
+    def reg_update(self):
+        assimp_exe = run.getEnvVar( "assimp_path" )
+        if len( assimp_exe ) == 0:
+            return 1
+        exe = "python"
+        command = [ exe, "gen_db.py", assimp_exe ]
+        log(INFO, "command = " + str(command))
+        stdout = subprocess.call(command)
+
+        log(INFO, stdout)
+        return 0
+    
+    def shop_diff( self ):
+        log(WARN, "ToDo!")
+        return 0
+        
+    def open_log(self):
+        command = [ self.editor, "../results/run_regression_suite_output.txt", ]
+        log(INFO, "command = " + str( command ) )
+        r = subprocess.call(command)
+        return 0
+
+    def show_version( self ):
+        d = VersionDialog( self.root )
+        return 0
+    
+    def setup(self):
+        d = SetupDialog( self.root )
+        return 0
+
+    def quit(self):
+        log( INFO, "quit" )
+        sys.exit( 0 )
+
+    def initUi(self):
+        # create the frame with buttons
+        self.root = Tk()
+        self.root.title( "Assimp-Regression UI")
+        self.b_run_       = Button( self.root, text="Run regression ", command=self.run_reg,    width = self.width )
+        self.b_update_    = Button( self.root, text="Update database", command=self.reg_update, width = self.width )
+        self.b_show_diff_ = Button( self.root, text="Show diff", command=self.shop_diff, width = self.width )
+        self.b_log_       = Button( self.root, text="Open log", command=self.open_log, width = self.width )
+        self.b_setup_     = Button( self.root, text="Setup", command=self.setup, width = self.width )
+        self.b_version_   = Button( self.root, text="Show version", command=self.show_version, width = self.width )
+        self.b_quit_      = Button( self.root, text="Quit", command=self.quit,       width = self.width )
+        
+        # define the used grid
+        self.b_run_.grid(       row=0, column=0, sticky=W+E )
+        self.b_update_.grid(    row=1, column=0, sticky=W+E )
+        self.b_show_diff_.grid( row=2, column=0, sticky=W+E )
+        self.b_log_.grid(       row=3, column=0, sticky=W+E )
+        self.b_setup_.grid(     row=4, column=0, sticky=W+E )
+        self.b_version_.grid(   row=5, column=0, sticky=W+E )
+        self.b_quit_.grid(      row=6, column=0, sticky=W+E )
+        
+        #self.b_update_.config( state=DISABLED )
+        self.b_show_diff_.config( state=DISABLED )
+        
+        # run mainloop
+        self.root.mainloop()
+
+# -------------------------------------------------------------------------------
+def getDefaultExecutable():
+    assimp_bin_path = ""
+    if platform.system() == "Windows":
+        assimp_bin_path = '..\\..\\bin\\debug\\assimpd.exe'
+    elif platform.system() == "Linux":
+        assimp_bin_path = '../../bin/assimp'
+
+    return assimp_bin_path
+
+# -------------------------------------------------------------------------------
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        assimp_bin_path = sys.argv[1]
+    else:
+        assimp_bin_path = getDefaultExecutable()
+    log( INFO, 'Using assimp binary: ' + assimp_bin_path )
+    dlg = RegDialog(assimp_bin_path)
+    dlg.initUi()
+   
+# vim: ai ts=4 sts=4 et sw=4
diff --git a/src/mesh/assimp-master/test/regression/gen_db.py b/src/mesh/assimp-master/test/regression/gen_db.py
new file mode 100644
index 0000000..a704c3a
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/gen_db.py
@@ -0,0 +1,225 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+# ---------------------------------------------------------------------------
+
+"""
+Generate the regression database db.zip from the files in the <root>/test/models
+directory. Older databases are overwritten with no prompt but can be restored
+using Git as needed.
+
+Use --help for usage.
+
+On Windows, use ``py run.py <arguments>`` to make sure command line parameters
+are forwarded to the script.
+"""
+
+import sys
+import os
+import subprocess
+import zipfile
+
+import settings
+import utils
+
+usage = """gen_db [assimp_binary] [-i=...] [-e=...] [-p] [-n]
+
+The assimp_cmd (or assimp) binary to use is specified by the first
+command line argument and defaults to ``assimp``.
+
+To build, set ``ASSIMP_BUILD_ASSIMP_TOOLS=ON`` in CMake. If generating
+configs for an IDE, make sure to build the assimp_cmd project.
+
+-i,--include: List of file extensions to update dumps for. If omitted,
+         all file extensions are updated except those in `exclude`.
+         Example: -ixyz,abc
+                  -i.xyz,.abc
+                  --include=xyz,abc
+
+-e,--exclude: Merged with settings.exclude_extensions to produce a
+         list of all file extensions to ignore. If dumps exist,
+         they are not altered. If not, theu are not created.
+
+-p,--preview: Preview list of file extensions touched by the update.
+         Dont' change anything.
+
+-n,--nozip: Don't pack to ZIP archive. Keep all dumps in individual files.
+"""
+
+# -------------------------------------------------------------------------------
+def process_dir(d, outfile, file_filter):
+    """ Generate small dump records for all files in 'd' """
+    print("Processing directory " + d)
+
+    num = 0
+    for f in os.listdir(d):
+        fullp = os.path.join(d, f)
+        if os.path.isdir(fullp) and not f == ".svn":
+            num += process_dir(fullp, outfile, file_filter)
+            continue
+
+        if file_filter(f):
+            for pp in settings.pp_configs_to_test:
+                num += 1
+                print("DUMP " + fullp + "\n post-processing: " + pp)
+                outf = os.path.join(os.getcwd(), settings.database_name,
+                    utils.hashing(fullp, pp))
+
+                cmd = [ assimp_bin_path, "dump", fullp, outf, "-b", "-s", "-l" ] + pp.split()
+                outfile.write("assimp dump "+"-"*80+"\n")
+                outfile.flush()
+                if subprocess.call(cmd, stdout=outfile, stderr=outfile, shell=False):
+                    print("Failure processing " + fullp)
+
+                    # spit out an empty file to indicate that this failure is expected
+                    with open(outf,'wb') as f:
+                        pass
+    return num
+                    
+
+# -------------------------------------------------------------------------------
+def make_zip():
+    """Zip the contents of ./<settings.database_name>
+    to <settings.database_name>.zip using DEFLATE
+    compression to minimize the file size. """
+
+    num = 0
+    zipout = zipfile.ZipFile(settings.database_name + ".zip", "w", zipfile.ZIP_DEFLATED)
+    for f in os.listdir(settings.database_name):
+        p = os.path.join(settings.database_name, f)
+        zipout.write(p, f)
+        if settings.remove_old:
+            os.remove(p)
+
+        num += 1
+
+    if settings.remove_old:
+        os.rmdir(settings.database_name)
+
+    bad = zipout.testzip()
+    assert bad is None
+
+    print("="*60)
+    print("Database contains {0} entries".format(num))
+
+
+# -------------------------------------------------------------------------------
+def extract_zip():
+    """Unzip <settings.database_name>.zip to
+    ./<settings.database_name>"""
+    try:
+        zipout = zipfile.ZipFile(settings.database_name + ".zip", "r", 0)
+        zipout.extractall(path=settings.database_name)
+    except (RuntimeError,IOError) as r:
+        print(r)
+        print("failed to extract previous ZIP contents. "\
+              "DB is generated from scratch.")
+        
+
+# -------------------------------------------------------------------------------
+def gen_db(ext_list,outfile):
+    """Generate the crash dump database in
+    ./<settings.database_name>"""
+    try:
+        os.mkdir(settings.database_name)
+    except OSError:
+        pass
+
+    num = 0
+    for tp in settings.model_directories:
+        num += process_dir(tp, outfile,
+            lambda x: os.path.splitext(x)[1].lower() in ext_list and not x in settings.files_to_ignore)
+
+    print("="*60)
+    print("Updated {0} entries".format(num))
+        
+
+# -------------------------------------------------------------------------------
+if __name__ == "__main__":
+    def clean(f):
+        f = f.strip("* \'")
+        return "."+f if f[:1] != '.' else f
+
+    if len(sys.argv) <= 1 or sys.argv[1] == "--help" or sys.argv[1] == "-h":
+        print(usage)
+        sys.exit(0)
+
+    assimp_bin_path = sys.argv[1]    
+    ext_list, preview, nozip = None, False, False
+    for m in sys.argv[2:]:
+        if m[:10]=="--exclude=":
+            settings.exclude_extensions += map(clean, m[10:].split(","))
+        elif m[:2]=="-e":
+            settings.exclude_extensions += map(clean, m[2:].split(","))
+        elif m[:10]=="--include=":
+            ext_list = m[10:].split(",")
+        elif m[:2]=="-i":
+            ext_list = m[2:].split(",")
+        elif m=="-p" or m == "--preview":
+            preview = True
+        elif m=="-n" or m == "--nozip":
+            nozip = True
+        else:
+            print("Unrecognized parameter: " + m)
+            sys.exit(-1)
+            
+    outfile = open(os.path.join("..", "results", "gen_regression_db_output.txt"), "w")
+    if ext_list is None:
+        (ext_list, err) = subprocess.Popen([assimp_bin_path, "listext"],
+            stdout=subprocess.PIPE).communicate()
+        ext_list = str(ext_list.strip()).lower().split(";")
+
+    # todo: Fix for multi dot extensions like .skeleton.xml
+    ext_list = list(filter(lambda f: not f in settings.exclude_extensions,
+        map(clean, ext_list)))
+    print('File extensions processed: ' + ', '.join(ext_list))
+    if preview:       
+        sys.exit(1)
+
+    extract_zip()    
+    gen_db(ext_list,outfile)
+    make_zip()
+
+    print("="*60)
+    input("Press any key to continue")
+    sys.exit(0)
+    
+# vim: ai ts=4 sts=4 et sw=4    
+
diff --git a/src/mesh/assimp-master/test/regression/result_checker.py b/src/mesh/assimp-master/test/regression/result_checker.py
new file mode 100644
index 0000000..1b01c52
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/result_checker.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+# ---------------------------------------------------------------------------
+
+"""
+This script runs as part of the Travis CI build on Github and controls
+whether a patch passes the regression test suite.
+
+Given the failures encountered by the regression suite runner (run.py) in
+  ../results/whitelist.csv
+and the current whitelist of failures considered acceptable in
+  ./run_regression_suite_failures_whitelisted.csv
+determine PASSED or FAILED.
+
+"""
+
+import sys
+import os
+
+RESULTS_FILE = os.path.join('..', 'results', 'run_regression_suite_failures.csv')
+WHITELIST_FILE = os.path.join('whitelist.csv')
+
+BANNER = """
+*****************************************************************
+Regression suite result checker
+(test/regression/result_checker.py)
+*****************************************************************
+"""
+
+def passed(message):
+    print('\n\n**PASSED: {0}.\n'.format(message))
+    return 0
+
+def failed(message):
+    print('\n\n**FAILED: {0}. \nFor more information see test/regression/README.\n'
+        .format(message))
+    return -1
+
+def read_results_csv(filename):
+    parse = lambda line: map(str.strip, line.split(';')[:2])
+    try:
+        with open(filename, 'rt') as results:
+            return dict(parse(line) for line in results.readlines()[1:])
+    except IOError:
+        print('Failed to read {0}.'.format(filename))
+        return None
+
+def run():
+    print(BANNER)
+    print('Reading input files.')
+    
+    result_dict = read_results_csv(RESULTS_FILE)
+    whitelist_dict = read_results_csv(WHITELIST_FILE)
+    if result_dict is None or whitelist_dict is None:
+        return failed('Could not locate input files')
+
+    if not result_dict:
+        return passed('No failures encountered')
+
+    print('Failures:\n' + '\n'.join(sorted(result_dict.keys())))
+    print('Whitelisted:\n' + '\n'.join(sorted(whitelist_dict.keys())))
+    non_whitelisted_failures = set(result_dict.keys()) - set(whitelist_dict.keys())
+    print('Failures not whitelisted:\n' + '\n'.join(sorted(non_whitelisted_failures)))
+    if not non_whitelisted_failures:
+        return passed('All failures are whitelisted and considered acceptable \n' +
+            'due to implementation differences, library shortcomings and bugs \n' +
+            'that have not been fixed for a long time')
+    return failed('Encountered new regression failures that are not whitelisted.  \n' +
+        'Please carefully review the changes you made and use the gen_db.py script\n' +
+        'to update the regression database for the affected files')
+
+if __name__ == "__main__":
+    sys.exit(run())
+
+# vim: ai ts=4 sts=4 et sw=4
diff --git a/src/mesh/assimp-master/test/regression/run.py b/src/mesh/assimp-master/test/regression/run.py
new file mode 100755
index 0000000..151d7a8
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/run.py
@@ -0,0 +1,320 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+# ---------------------------------------------------------------------------
+
+"""
+Run the regression test suite using settings from settings.py.
+
+The assimp_cmd (or assimp) binary to use is specified by the first
+command line argument and defaults to ``assimp``.
+
+To build, set ``ASSIMP_BUILD_ASSIMP_TOOLS=ON`` in CMake. If generating
+configs for an IDE, make sure to build the assimp_cmd project.
+
+On Windows, use ``py run.py <path to assimp>`` to make sure the command
+line parameter is forwarded to the script.
+"""
+
+import sys
+import os
+import subprocess
+import zipfile
+import collections
+import multiprocessing
+
+import settings
+import utils
+
+# -------------------------------------------------------------------------------
+EXPECTED_FAILURE_NOT_MET, DATABASE_LENGTH_MISMATCH, \
+DATABASE_VALUE_MISMATCH, IMPORT_FAILURE, \
+FILE_NOT_READABLE, COMPARE_SUCCESS, EXPECTED_FAILURE = range(7)
+
+messages = collections.defaultdict(lambda: "<unknown", {
+        EXPECTED_FAILURE_NOT_MET:
+"""Unexpected success during import\n\
+\tReturn code was 0""",
+
+        DATABASE_LENGTH_MISMATCH:
+"""Database mismatch: lengths don't match\n\
+\tExpected: {0} Actual: {1}""",
+
+        DATABASE_VALUE_MISMATCH:
+"""Database mismatch: """,
+
+        IMPORT_FAILURE:
+"""Unexpected failure during import\n\
+\tReturn code was {0}""",
+
+        FILE_NOT_READABLE:
+"""Unexpected failure reading file""",
+
+        COMPARE_SUCCESS:
+"""Results match archived reference dump in database\n\
+\tNumber of bytes compared: {0}""",
+
+        EXPECTED_FAILURE:
+"""Expected failure was met.""",
+})
+
+outfilename_output = "run_regression_suite_output.txt"
+outfilename_failur = "run_regression_suite_failures.csv"
+Environment        = {}
+
+# -------------------------------------------------------------------------------
+class results:
+
+    """ Handle formatting of results"""
+
+    def __init__(self, zipin):
+        """Init, given a ZIPed database """
+        self.failures = []
+        self.success = []
+        self.zipin = zipin
+
+
+    def fail(self, failfile, filename_expect, pp, msg, *args):
+        """
+        Report failure of a sub-test
+
+        File f failed a test for pp config pp, failure notice is msg,
+        *args is format()ting args for msg
+
+        """
+        print("[FAILURE] " + messages[msg].format(*args))
+        self.failures.append((failfile, filename_expect, pp))
+
+
+    def ok(self, f, pp, msg, *args):
+        """
+        Report success of a sub-test
+
+        File f passed the test, msg is a happy success note,
+        *args is format()ing args for msg.
+
+        """
+        print("[SUCCESS] " + messages[msg].format(*args))
+        self.success.append(f)
+
+
+    def report_results(self):
+        """Write results to ../results/run_regression_suite_failures.txt"""
+
+        count_success = len(self.success)
+        count_fail = len(self.failures)
+        percent_good = float(count_success) / (count_success + count_fail)
+        print("\n" + ('='*60) + "\n" + "SUCCESS: {0}\nFAILURE: {1}\nPercentage good: {2}".format(
+            count_success, count_fail, percent_good) +
+              "\n" + ('='*60) + "\n")
+
+        with open(os.path.join('..', 'results',outfilename_failur), "wt") as f:
+            f.write("ORIGINAL FILE;EXPECTED DUMP\n")
+            f.writelines(map(
+                lambda x: x[0] + ' ' + x[2] + ";" + x[1] + "\n", self.failures))
+
+        if self.failures:
+           print("\nSee " + settings.results + "\\" + outfilename_failur
+                 + " for more details\n\n")
+
+    def hasFailures( self ):
+        """ Return True, if any failures there. """
+        return 0 != len( self.failures )
+
+# -------------------------------------------------------------------------------
+def setEnvVar( var, value ):
+    print ( "set var " + var +" to" + value)
+    Environment[ var ] = value
+
+# -------------------------------------------------------------------------------
+def getEnvVar( var ):
+    if var in Environment:
+        return Environment[ var ]
+    else:
+        print ( "Error: cannot find " + var )
+    return ""
+    
+# -------------------------------------------------------------------------------
+def prepare_output_dir(fullpath, myhash, app):
+    outfile = os.path.join(settings.results, "tmp", os.path.split(fullpath)[1] + "_" + myhash)
+    try:
+        os.mkdir(outfile)
+    except OSError:
+        pass
+
+    outfile = os.path.join(outfile, app)
+    return outfile
+
+# -------------------------------------------------------------------------------
+def process_dir(d, outfile_results, zipin, result ):
+    shellparams = {'stdout':outfile_results, 'stderr':outfile_results, 'shell':False}
+
+    print("Processing directory " + d)
+    all = ""
+    for f in sorted(os.listdir(d)):
+        fullpath = os.path.join(d, f)
+        if os.path.isdir(fullpath) and not f[:1] == '.':
+            process_dir(fullpath, outfile_results, zipin, result)
+            continue
+                
+        if f in settings.files_to_ignore or os.path.splitext(f)[1] in settings.exclude_extensions:
+            print("Ignoring " + f)
+            return
+
+        for pppreset in settings.pp_configs_to_test:
+            filehash = utils.hashing(fullpath, pppreset)
+            failure = False
+
+            try:
+                input_expected = zipin.open(filehash, "r").read()
+                # empty dump files indicate 'expected import failure'
+                if not len(input_expected):
+                   failure = True
+            except KeyError:
+                # TODO(acgessler): Keep track of this and report as error in the end.
+                print("Didn't find "+fullpath+" (Hash is "+filehash+") in database. Outdated "+\
+                    "regression database? Use gen_db.zip to re-generate.")
+                continue
+
+            print("-"*60 + "\n  " + os.path.realpath(fullpath) + " pp: " + pppreset)
+
+            outfile_actual = prepare_output_dir(fullpath, filehash, "ACTUAL")
+            outfile_expect = prepare_output_dir(fullpath, filehash, "EXPECT")
+            outfile_results.write("assimp dump    "+"-"*80+"\n")
+            outfile_results.flush()
+            assimp_bin_path = getEnvVar("assimp_path")
+            command = [assimp_bin_path,
+                "dump",
+                fullpath, outfile_actual, "-b", "-s", "-l" ] +\
+                pppreset.split()
+            print( "command = " + str( command ) )
+            r = subprocess.call(command, **shellparams)
+            outfile_results.flush()
+
+            if r and not failure:
+                result.fail(fullpath, outfile_expect, pppreset, IMPORT_FAILURE, r)
+                outfile_results.write("Failed to import\n")
+                continue
+            elif failure and not r:
+                result.fail(fullpath, outfile_expect, pppreset, EXPECTED_FAILURE_NOT_MET)
+                outfile_results.write("Expected import to fail\n")
+                continue
+            elif failure and r:
+                result.ok(fullpath, pppreset, EXPECTED_FAILURE)
+                outfile_results.write("Failed as expected, skipping.\n")
+                continue
+
+            with open(outfile_expect, "wb") as s:
+                s.write(input_expected)
+
+            try:
+                with open(outfile_actual, "rb") as s:
+                    input_actual = s.read()
+            except IOError:
+                continue
+
+            outfile_results.write("Expected data length: {0}\n".format(len(input_expected)))
+            outfile_results.write("Actual data length: {0}\n".format(len(input_actual)))
+            failed = False
+            if len(input_expected) != len(input_actual):
+                result.fail(fullpath, outfile_expect, pppreset, DATABASE_LENGTH_MISMATCH,
+                        len(input_expected), len(input_actual))
+                # Still compare the dumps to see what the difference is
+                failed = True
+
+            outfile_results.write("assimp cmpdump "+"-"*80+"\n")
+            outfile_results.flush()
+            command = [ assimp_bin_path, 'cmpdump', outfile_actual, outfile_expect ]
+            if subprocess.call(command, **shellparams) != 0:
+                if not failed:
+                    result.fail(fullpath, outfile_expect, pppreset, DATABASE_VALUE_MISMATCH)
+                continue
+
+            result.ok(fullpath, pppreset, COMPARE_SUCCESS, len(input_expected))
+
+# -------------------------------------------------------------------------------
+def del_folder_with_contents(folder):
+    for root, dirs, files in os.walk(folder, topdown=False):
+        for name in files:
+            os.remove(os.path.join(root, name))
+        for name in dirs:
+            os.rmdir(os.path.join(root, name))
+
+
+# -------------------------------------------------------------------------------
+def run_test():
+    tmp_target_path = os.path.join(settings.results, "tmp")
+    try:
+        print( "try to make " + tmp_target_path )
+        os.mkdir(tmp_target_path)
+    except OSError as oerr:
+        # clear contents if tmp folder exists already
+       del_folder_with_contents(tmp_target_path)
+
+    try:
+        zipin = zipfile.ZipFile(settings.database_name + ".zip",
+            "r", zipfile.ZIP_STORED)
+    except IOError:
+        print("Regression database ", settings.database_name,
+              ".zip was not found")
+        return
+
+    res = results(zipin)
+    with open(os.path.join(settings.results, outfilename_output), "wt") as outfile:
+        for tp in settings.model_directories:
+            process_dir(tp, outfile, zipin, res)
+
+    res.report_results()
+    if res.hasFailures():
+        return 1
+
+    return 0
+
+# -------------------------------------------------------------------------------
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        assimp_bin_path = sys.argv[1]
+    else:
+        assimp_bin_path = 'assimp'
+    setEnvVar("assimp_path", assimp_bin_path)
+    print('Using assimp binary: ' + assimp_bin_path)
+    sys.exit( run_test() )
+
+# vim: ai ts=4 sts=4 et sw=4
diff --git a/src/mesh/assimp-master/test/regression/settings.py b/src/mesh/assimp-master/test/regression/settings.py
new file mode 100644
index 0000000..9d0a036
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/settings.py
@@ -0,0 +1,134 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+# ---------------------------------------------------------------------------
+
+"""Shared settings for the regression suite (bold builder and
+test scripts rely on this)
+
+"""
+
+import os
+
+# -------------------------------------------------------------------------------
+# Files to ignore (with reason)
+#
+# pond.0.ply - loads with 40k identical triangles, causing postprocessing
+# to have quadratic runtime.
+# -------------------------------------------------------------------------------
+files_to_ignore = ["pond.0.ply"]
+
+# -------------------------------------------------------------------------------
+# List of file extensions to be excluded from the regression suite
+# File extensions are case insensitive
+# -------------------------------------------------------------------------------
+exclude_extensions = [
+    ".assbin", ".assxml", ".txt", ".md",
+    ".jpeg", ".jpg", ".png", ".gif", ".tga", ".bmp",
+    ".skeleton", ".skeleton.xml", ".license", ".mtl", ".material", ".pk3"
+]
+
+# -------------------------------------------------------------------------------
+# Post processing configurations to be included in the test. The
+# strings are parameters for assimp_cmd, see assimp_cmd's doxydoc
+# for more details. 
+
+# The defaults are (validate-data-structure is always enabled, for
+# self-explanatory reasons :-):
+#
+# '-cfull'    :apply all post processing except 'og' and 'ptv' (optimize-scenegraph)
+# '-og -om'   :run optimize-scenegraph in combination with optimize-meshes.
+# '-vds -jiv' :join-identical-vertices alone. This is a hotspot where
+#              floating-point inaccuracies can cause severe damage.
+# '-ptv':      transform all meshes to world-space
+
+# As you can see, not all possible combinations of pp steps are covered - 
+# but at least each step is executed at least once on each model. 
+# -------------------------------------------------------------------------------
+pp_configs_to_test = [
+    "-cfull",
+    "-og -om -vds",
+    "-vds -jiv",
+    "-ptv -gsn -cts -db",
+
+    # this is especially important: if no failures are present with this 
+    # preset, the regression is most likely caused by the post
+    # processing pipeline.
+    ""
+]
+# -------------------------------------------------------------------------------
+# Name of the regression database file to be used
+# gen_db.py writes to this directory, run.py checks against this directory.
+# If a zip file with the same name exists, its contents are favoured to a 
+# normal directory, so in order to test against unzipped files the ZIP needs
+# to be deleted.
+# -------------------------------------------------------------------------------
+database_name = "db"
+
+# -------------------------------------------------------------------------------
+# List of directories to be processed. Paths are processed recursively.
+# -------------------------------------------------------------------------------
+model_directories = [
+    os.path.join("..","models"),
+    os.path.join("..","models-nonbsd")
+]
+
+# -------------------------------------------------------------------------------
+# Remove the original database files after the ZIP has been built?
+# -------------------------------------------------------------------------------
+remove_old = True
+
+# -------------------------------------------------------------------------------
+# Bytes to skip at the beginning of a dump. This skips the file header, which
+# is currently the same 500 bytes header for both assbin, assxml and minidumps.
+# -------------------------------------------------------------------------------
+dump_header_skip = 500
+
+# -------------------------------------------------------------------------------
+# Directory to write all results and logs to. The dumps pertaining to failed
+# tests are written to a subfolder of this directory ('tmp').
+# -------------------------------------------------------------------------------
+results = os.path.join("..","results")
+
+# Create results directory if it does not exist
+if not os.path.exists(results):
+    os.makedirs(results)
+
+# vim: ai ts=4 sts=4 et sw=4
diff --git a/src/mesh/assimp-master/test/regression/utils.py b/src/mesh/assimp-master/test/regression/utils.py
new file mode 100644
index 0000000..f2c0c26
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/utils.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+# -*- Coding: UTF-8 -*-
+
+# ---------------------------------------------------------------------------
+# Open Asset Import Library (ASSIMP)
+# ---------------------------------------------------------------------------
+#
+# Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+# ---------------------------------------------------------------------------
+
+"""Shared stuff for the gen_db and run scripts"""
+
+# -------------------------------------------------------------------------------
+def hashing(file,pp):
+    """ Map an input file and a postprocessing config to an unique hash.
+
+    The hash is used to store the item in the database. It 
+    needs to be persistent across different python implementations
+    and platforms, so we implement the hashing manually.
+    """
+    file = file.lower()
+    file = file.replace('\\','/')+":"+pp
+    # SDBM hash
+    res = 0
+    for t in file:
+        res = (ord(t) + (res<<6) + (res<<16) - res) % 2**32
+    return '{:x}'.format(res)
+
+
+ # vim: ai ts=4 sts=4 et sw=4
diff --git a/src/mesh/assimp-master/test/regression/whitelist.csv b/src/mesh/assimp-master/test/regression/whitelist.csv
new file mode 100644
index 0000000..43e0928
--- /dev/null
+++ b/src/mesh/assimp-master/test/regression/whitelist.csv
@@ -0,0 +1,32 @@
+ORIGINAL FILE;EXPECTED DUMP
+../models/AC/SphereWithLightUvScaling4X.ac -cfull;../results/tmp/SphereWithLightUvScaling4X.ac_30edbbcd/EXPECT
+../models/AC/SphereWithLightUvScaling4X.ac -vds -jiv;../results/tmp/SphereWithLightUvScaling4X.ac_a627320a/EXPECT
+../models/AC/sample_subdiv.ac -cfull;../results/tmp/sample_subdiv.ac_669c529e/EXPECT
+../models/AC/sample_subdiv.ac -vds -jiv;../results/tmp/sample_subdiv.ac_d5987f9/EXPECT
+../models/BLEND/CubeHierarchy_248.blend -cfull;../results/tmp/CubeHierarchy_248.blend_4e04cc99/EXPECT
+../models/BLEND/CubeHierarchy_248.blend -og -om -vds;../results/tmp/CubeHierarchy_248.blend_5e78ea9c/EXPECT
+../models/BLEND/CubeHierarchy_248.blend -vds -jiv;../results/tmp/CubeHierarchy_248.blend_8aca7a3e/EXPECT
+../models/BLEND/CubeHierarchy_248.blend -ptv -gsn -cts -db;../results/tmp/CubeHierarchy_248.blend_1f2b8aa4/EXPECT
+../models/BLEND/CubeHierarchy_248.blend ;../results/tmp/CubeHierarchy_248.blend_b827f814/EXPECT
+../models/BLEND/SuzanneSubdiv_252.blend -cfull;../results/tmp/SuzanneSubdiv_252.blend_4a8dd3d3/EXPECT
+../models/BLEND/SuzanneSubdiv_252.blend -vds -jiv;../results/tmp/SuzanneSubdiv_252.blend_7f41fe84/EXPECT
+../models/STL/Spider_ascii.stl -cfull;../results/tmp/Spider_ascii.stl_8047fd91/EXPECT
+../models/STL/Spider_ascii.stl -vds -jiv;../results/tmp/Spider_ascii.stl_d4858346/EXPECT
+../models/STL/Spider_binary.stl -cfull;../results/tmp/Spider_binary.stl_dd4fe21/EXPECT
+../models/STL/Spider_binary.stl -vds -jiv;../results/tmp/Spider_binary.stl_2c8deeb6/EXPECT
+../models-nonbsd/BLEND/Bob.blend -cfull;../results/tmp/Bob.blend_7f8349ba/EXPECT
+../models-nonbsd/BLEND/Bob.blend -og -om -vds;../results/tmp/Bob.blend_4f4a63d/EXPECT
+../models-nonbsd/BLEND/Bob.blend -vds -jiv;../results/tmp/Bob.blend_ab1aa5dd/EXPECT
+../models-nonbsd/BLEND/Bob.blend -ptv -gsn -cts -db;../results/tmp/Bob.blend_6a5ec4c5/EXPECT
+../models-nonbsd/BLEND/Bob.blend ;../results/tmp/Bob.blend_2fc376b5/EXPECT
+../models-nonbsd/BLEND/fleurOptonl.blend -cfull;../results/tmp/fleurOptonl.blend_6e87e039/EXPECT
+../models-nonbsd/BLEND/fleurOptonl.blend -og -om -vds;../results/tmp/fleurOptonl.blend_95048e3c/EXPECT
+../models-nonbsd/BLEND/fleurOptonl.blend -vds -jiv;../results/tmp/fleurOptonl.blend_52481e9e/EXPECT
+../models-nonbsd/BLEND/fleurOptonl.blend -ptv -gsn -cts -db;../results/tmp/fleurOptonl.blend_5e7be44/EXPECT
+../models-nonbsd/BLEND/fleurOptonl.blend ;../results/tmp/fleurOptonl.blend_18ca7bb4/EXPECT
+../models-nonbsd/LWS/QuickDraw v.2.2_oldformat_56.lws -ptv -gsn -cts -db;../results/tmp/QuickDraw v.2.2_oldformat_56.lws_da6fa6e2/EXPECT
+../models-nonbsd/LWS/QuickDraw v.2.2_oldformat_56.lws ;../results/tmp/QuickDraw v.2.2_oldformat_56.lws_d37dcb52/EXPECT
+../models-nonbsd/Ogre/OgreSDK/ninja.mesh.xml -cfull;../results/tmp/ninja.mesh.xml_2a5e7eb6/EXPECT
+../models-nonbsd/PK3/SGDTT3.pk3 -ptv -gsn -cts -db;../results/tmp/SGDTT3.pk3_591f74f1/EXPECT
+../models-nonbsd/PK3/SGDTT3.pk3 ;../results/tmp/SGDTT3.pk3_ad4b2ce1/EXPECT
+../models-nonbsd/PK3/SGDTT3.pk3 -cfull;../results/tmp/SGDTT3.pk3_ad4b2ce1/EXPECT