549 lines
16 KiB
C
549 lines
16 KiB
C
/** @file dox_cmd.h
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* @brief General documentation for assimp_cmd
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*/
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//----------------------------------------------------------------------------------------------
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// ASSIMP CMD MAINPAGE
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/**
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@mainpage ASSIMP Command-line tools
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<img src="dragonsplash.png"></img>
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@section intro Introduction
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This document describes the usage of assimp's command line tools.
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This is *not* the SDK reference and programming-related stuff is not covered here.
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<br><br>
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<b>NOTE</b>: For simplicity, the following sections are written with Windows in mind. However
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it's not different for Linux/Mac at all, except there's probably no assimp.exe ...
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@section basic_use Basic use
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Open a command prompt and navigate to the directory where assimp.exe resides. The basic command line is:
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@code
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assimp [command] [parameters]
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@endcode
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The following commands are available:
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<table border="1">
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<tr>
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<td><b>@link version version @endlink</b></td>
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<td>Retrieve the current version of assimp</td>
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</tr>
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<tr>
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<td><b>@link help help @endlink</b></td>
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<td>Get a list of all commands (yes, it's this list ...)</td>
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</tr>
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<tr>
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<td><b>@link dump dump @endlink</b></td>
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<td>Generate a human-readable text dump of a model</td>
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</tr>
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<tr>
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<td><b>@link extract extract @endlink</b></td>
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<td>Extract an embedded texture image</td>
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</tr>
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<tr>
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<td><b>@link iinfo info @endlink</b></td>
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<td>Load a model and print basic statistics</td>
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</tr>
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<tr>
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<td><b>@link cmpdump cmpdump @endlink</b></td>
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<td>Regression checking tool</td>
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</tr>
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</table>
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If you use assimp's command line frequently, consider adding assimp to your PATH
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environment.
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*/
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/**
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@page version 'version'-Command
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Display the version/revision of Assimp used.
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*/
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/**
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@page help 'help'-Command
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Display a really helpful text.
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*/
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//----------------------------------------------------------------------------------------------
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// ASSIMP INFO
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/**
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@page iinfo 'info'-Command
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Load a model file and print basic statistics. Full postprocessing is applied unless the <tt>-r</tt> switch is specified. Sample output (<tt>assimp info ./test/models/3DS/mar_rifle.3ds</tt>):
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@verbatim
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Launching model import ... OK
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Validating postprocessing flags ... OK
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Importing file ... OK
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import took approx. 0.02400 seconds
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Memory consumption: 69444 B
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Nodes: 2
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Maximum depth 2
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Meshes: 1
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Animations: 0
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Textures (embed.): 0
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Materials: 1
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Cameras: 0
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Lights: 0
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Vertices: 843
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Faces: 572
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Bones: 0
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Animation Channels: 0
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Primitive Types: triangles
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Average faces/mesh 572
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Average verts/mesh 843
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Minimum point (-3.522588 -11.573204 -40.340359)
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Maximum point (3.522622 30.196556 75.941292)
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Center point (0.000017 9.311676 17.800467)
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Named Materials:
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'mat1'
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Texture Refs:
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'm_rifl.bmp'
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Node hierarchy:
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'<3DSRoot>', meshes: 0
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-- 'm_rifle', meshes: 1
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<--
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@endverbatim
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<h3>Syntax:</h3>
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@code
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assimp info file [-r]
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@endcode
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<h3>Parameters:</h3>
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<p>
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<tt>
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file<br></tt><br>
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Required. Input file.
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</p>
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<p>
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<tt>
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-r</tt><br>
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Optional. Don't perform any postprocessing. The long form of this parameter is <tt>--raw</tt>.
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</p>
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*/
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//----------------------------------------------------------------------------------------------
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// ASSIMP CMPDUMP
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/**
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@page cmpdump 'cmpdump'-Command
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<b>Used for Assimp's internal regression testing.</b> Compare two mini dumps (produced using <tt>assimp dump .. -b -s</tt>) and
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report any differences. In the regression test suite, this facility is used to build a database of
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'known-to-be-fine' mini dumps, which are regularly compared against current results to detect regressions.
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<h3>Syntax:</h3>
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@code
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assimp cmpdmp actual expected
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@endcode
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<h3>Parameters:</h3>
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<p>
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<tt>
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actual<br></tt><br>
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Required. Mini dump now.
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</p>
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<p>
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<tt>
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expected<br></tt><br>
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Required. Archived dump from some point in the past.
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</p>
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*/
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//----------------------------------------------------------------------------------------------
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// ASSIMP DUMP
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/**
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@page dump 'dump'-Command
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Generate a text or binary dump of a model. This is the core component of Assimp's internal
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regression test suite but it could also be useful for other developers to quickly
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examine the contents of a model. Note that text dumps are not intended to be used as
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intermediate format, Assimp is not able to read them again, nor is the file format
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stable or well-defined. It may change with every revision without notice.
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Binary dumps (*.assbin) are backwards- and forwards-compatible.
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<h3>Syntax:</h3>
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@code
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assimp dump <model> [<out>] [-b] [-s] [common parameters]
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@endcode
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<h3>Parameters:</h3>
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<p>
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<tt>
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model<br></tt><br>
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Required. Relative or absolute path to the input model.
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</p>
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<p>
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<tt>
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out<br></tt><br>
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Optional. Relative or absolute path to write the output dump to. If it is omitted,
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the dump is written to <tt><model>-dump.txt</tt>
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</p>
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<p>
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<tt>-b<br>
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</tt><br>
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Optional. If this switch is specified, the dumb is written in binary format.
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The long form of this parameter is <tt>--binary</tt>.
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</p>
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<p>
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<tt>-s<n><br>
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</tt><br>
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Optional. If this switch is specified, the dumb is shortened to include only
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min/max values for all vertex components and animation channels. The resulting
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file is much smaller, but the original model can't be reconstructed from it. This is
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used by Assimp's regression test suite, comparing those minidumps provides
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a fast way to verify whether a loader works correctly or not.
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The long form of this parameter is <tt>--short</tt>.
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</p>
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<p>
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<tt>
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common parameters<br></tt><br>
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Optional. Import configuration & postprocessing.
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See the @link common common parameters page @endlink for more information.
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</p>
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<hr>
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<h3>Sample:</h3>
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@code
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assimp dump test.3ds test.txt -l -cfull
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assimp dump test.3ds test.txt -include-log -config=full
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@endcode
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Dumps 'test.3ds' to 'test.txt' after executing full post-processing on tehe imported data.
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The log output is included with the dump.
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@code
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assimp dump files\*.*
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assimp dump files\*.*
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@endcode
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Dumps all loadable model files in the 'files' subdir. The output dumps are named
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<tt><mode-file>-dump.txt</tt>. The log is not included.
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*/
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//----------------------------------------------------------------------------------------------
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// ASSIMP EXTRACT
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/**
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@page extract 'extract'-Command
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Extracts one or more embedded texture images from models.
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<h3>Syntax:</h3>
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@code
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assimp extract <model> [<out>] [-t<n>] [-f<fmt>] [-ba] [-s] [common parameters]
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@endcode
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<h3>Parameters:</h3>
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<p>
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<tt>
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model<br></tt><br>
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Required. Relative or absolute path to the input model.
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</p>
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<p>
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<tt>
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out<br></tt><br>
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Optional. Relative or absolute path to write the output images to. If the file name is
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omitted the output images are named <tt><model-filename></tt><br>
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The suffix <tt>_img<n></tt> is appended to the file name if the -s switch is not specified
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(where <tt><n></tt> is the zero-based index of the texture in the model file).<br>
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The output file format is determined from the given file extension. Supported
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formats are BMP and TGA. If the file format can't be determined,
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the value specified with the -f switch is taken.
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<br>
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Format settings are ignored for compressed embedded textures. They're always
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written in their native file format (e.g. jpg).
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</p>
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<p>
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<tt>-t<n><br>
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</tt><br>
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Optional. Specifies the (zero-based) index of the embedded texture to be extracted from
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the model. If this option is *not* specified all textures found are exported.
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The long form of this parameter is <tt>--texture=<n></tt>.
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</p>
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<p>
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<tt>-ba<n><br>
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</tt><br>
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Optional. Specifies whether output BMPs contain an alpha channel or not.
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The long form of this parameter is <tt>--bmp-with-alpha=<n></tt>.
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</p>
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<p>
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<tt>-f<n><br>
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</tt><br>
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Optional. Specifies the output file format. Supported
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formats are BMP and TGA. The default value is BMP (if a full output filename is
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specified, the output file format is taken from its extension, not from here).
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The long form of this parameter is <tt>--format=<n></tt>.
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</p>
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<p>
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<tt>-s<n><br>
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</tt><br>
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Optional. Prevents the tool from adding the <tt>_img<n></tt> suffix to all filenames. This option
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must be specified together with -t to ensure that just one image is written.
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The long form of this parameter is <tt>--nosuffix</tt>.
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</p>
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<p>
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<tt>
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common parameters<br></tt><br>
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Optional. Import configuration & postprocessing. Most postprocessing-steps don't affect
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embedded texture images, configuring too much is probably senseless here.
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See the @link common common parameters page @endlink for more information.
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</p>
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<hr>
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<h3>Sample:</h3>
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@code
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assimp extract test.mdl test.bmp --texture=0 --validate-data-structure
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assimp extract test.mdl test.bmp -t=0 -vds
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@endcode
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Extracts the first embedded texture (if any) from test.mdl after validating the
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imported data structure and writes it to <tt>test_img0.bmp</tt>.
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@code
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assimp extract files\*.mdl *.bmp
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assimp extract files\*.mdl *.bmp
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@endcode
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Extracts all embedded textures from all loadable .mdl files in the 'files' subdirectory
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and writes them to bitmaps which are named <tt><model-file>_img<image-index>.bmp</tt>
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*/
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//----------------------------------------------------------------------------------------------
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// ASSIMP COMMON PARAMETERS
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/**
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@page common Common parameters
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The parameters described on this page are commonly used by almost every assimp command. They
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specify how the library will postprocess the imported data. This is done by several
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configurable pipeline stages, called 'post processing steps'. Below you can find a list
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of all supported steps along with short descriptions of what they're doing. <br><b>Programmers</b>:
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more information can be found in the <tt>aiPostProcess.h</tt> header.
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<table border="1">
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<tr>
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<th>Parameter</th>
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<th>Long parameter</th>
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<th>Description</th>
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</tr>
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<tr>
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<td><tt>-ptv</tt></td>
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<td><tt>--pretransform-vertices</tt></td>
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<td>Move all vertices into worldspace and collapse the scene graph. Animation data is lost.
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This is intended for applications which don't support scenegraph-oriented rendering.</td>
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</tr>
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<tr>
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<td><tt>-gsn</tt></td>
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<td><tt>--gen-smooth-normals</tt></td>
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<td>Computes 'smooth' per-vertex normal vectors if necessary. Mutually exclusive with -gn</td>
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</tr>
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<tr>
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<td><tt>-gn</tt></td>
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<td><tt>--gen-normals</tt></td>
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<td>Computes 'hard' per-face normal vectors if necessary. Mutually exclusive with -gsn</td>
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</tr>
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<tr>
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<td><tt>-cts</tt></td>
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<td><tt>--calc-tangent-space</tt></td>
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<td>If one UV channel and normal vectors are given, compute tangents and bitangents</td>
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</tr>
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<tr>
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<td><tt>-jiv</tt></td>
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<td><tt>--join-identical-vertices</tt></td>
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<td>Optimize the index buffer. If this flag is not specified all vertices are referenced once.</td>
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</tr>
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<tr>
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<td><tt>-rrm</tt></td>
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<td><tt>--remove-redundant-materials</tt></td>
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<td>Remove redundant materials from the imported data.</td>
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</tr>
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<tr>
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<td><tt>-fd</tt></td>
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<td><tt>--find-degenerates</tt></td>
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<td>Find and process degenerates primitives.</td>
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</tr>
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<tr>
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<td><tt>-slm</tt></td>
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<td><tt>--split-large-meshes</tt></td>
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<td>Split large meshes over a specific threshold in smaller sub meshes. The default vertex & face limit is 1000000</td>
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</tr>
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<tr>
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<td><tt>-lbw</tt></td>
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<td><tt>--limit-bone-weights</tt></td>
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<td>Limit the number of bones influencing a single vertex. The default limit is 4.</td>
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</tr>
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<tr>
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<td><tt>-vds</tt></td>
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<td><tt>--validate-data-structure</tt></td>
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<td>Performs a full validation of the imported data structure. Recommended to avoid crashes if
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an import plugin produces rubbish</td>
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</tr>
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<tr>
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<td><tt>-icl</tt></td>
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<td><tt>--improve-cache-locality</tt></td>
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<td>Improve the cache locality of the vertex buffer by reordering the index buffer
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to achieve a lower ACMR (average post-transform vertex cache miss ratio)</td>
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</tr>
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<tr>
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<td><tt>-sbpt</tt></td>
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<td><tt>--sort-by-ptype</tt></td>
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<td>Splits meshes which consist of more than one kind of primitives (e.g. lines and triangles mixed up)
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in 'clean' submeshes. </td>
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</tr>
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<tr>
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<td><tt>-lh</tt></td>
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<td><tt>--convert-to-lh</tt></td>
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<td>Converts the imported data to left-handed coordinate space</td>
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</tr>
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<tr>
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<td><tt>-fuv</tt></td>
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<td><tt>--flip-uv</tt></td>
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<td>Flip UV coordinates from upper-left origin to lower-left origin</td>
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</tr>
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<tr>
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<td><tt>-fwo</tt></td>
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<td><tt>--flip-winding-order</tt></td>
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<td>Flip face winding order from CCW to CW</td>
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</tr>
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<tr>
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<td><tt>-ett</tt></td>
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<td><tt>--evaluate-texture-transform</tt></td>
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<td>Evaluate per-texture UV transformations (e.g scaling, offset) and build pretransformed UV channels</td>
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</tr>
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<tr>
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<td><tt>-guv</tt></td>
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<td><tt>--gen-uvcoords</tt></td>
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<td>Replace abstract mapping descriptions, such as 'spherical' or 'cylindrical' with proper UV channels</td>
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</tr>
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<tr>
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<td><tt>-fixn</tt></td>
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<td><tt>--fix-normals</tt></td>
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<td>Run a heuristic algorithm to detect meshes with wrong face winding order/normals. </td>
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</tr>
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<tr>
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<td><tt>-tri</tt></td>
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<td><tt>--triangulate</tt></td>
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<td>Triangulate poylgons with 4 and more points. Lines, points and triangles are not affected. </td>
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</tr>
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<tr>
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<td><tt>-fi</tt></td>
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<td><tt>--find-instances</tt></td>
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<td>Search the data structure for instanced meshes and replace them by references. This can
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reduce vertex/face counts but the postprocessing-step takes some time.</td>
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</tr>
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<tr>
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<td><tt>-og</tt></td>
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<td><tt>--optimize-graph</tt></td>
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<td>Simplify and optimize the scenegraph. Use it with care, all hierarchy information could be lost.
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Animations remain untouched. </td>
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</tr>
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<tr>
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<td><tt>-om</tt></td>
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<td><tt>--optimize-mesh</tt></td>
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<td>Optimize mesh usage. Meshes are merged, if possible. Very effective in combination with <tt>--optimize-graph</tt></td>
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</tr>
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</table>
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For convenience some default postprocessing configurations are provided.
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The corresponding command line parameter is <tt>-c<name></tt> (or <tt>--config=<name></tt>).
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<table border="1">
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<tr>
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<th>Name</th>
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<th>Description</th>
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<th>List of steps executed</th>
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</tr>
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<tr>
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<td>fast</td>
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<td>Fast post processing config, performs some essential optimizations and computes tangents</td>
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<td><tt>-cts, -gn, -jiv, -tri, -guv, -sbpt</tt></td>
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</tr>
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<tr>
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<td>default</td>
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<td>Balanced post processing config; performs most optimizations</td>
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<td><tt>-cts, -gsn, -jiv, -icl, -lbw, -rrm, -slm, -tri, -guv, -sbpt, -fd, -fiv</tt></td>
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</tr>
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<tr>
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<td>full</td>
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<td>Full post processing. May take a while but results in best output quality for most purposes</td>
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<td><tt>-cts, -gsn, -jiv, -icl, -lbw, -rrm, -slm, -tri, -guv, -sbpt, -fd, -fiv, -fi, -vds -om</tt></td>
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</tr>
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</table>
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The <tt>-tuv, -ptv, -og</tt> flags always need to be enabled manually.
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There are also some common flags to customize Assimp's logging behaviour:
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<table border="1">
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<tr>
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<th>Name</th>
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<th>Description</th>
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</tr>
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<tr>
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<td><tt>-l</tt> or <tt>--show-log</tt></td>
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<td>Show log file on console window (stderr)</td>
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</tr>
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<tr>
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<td><tt>-lo<file></tt> or <tt>--log-out=<file></tt></td>
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<td>Streams the log to <file></td>
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</tr>
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<tr>
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<td><tt>-v</tt> or <tt>--verbose</tt></td>
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<td>Enables verbose logging. Debug messages will be produced too. This might
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decrease loading performance and result in *very* long logs ... use with caution if you experience strange issues.</td>
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</tr>
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</table>
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*/
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