#!/bin/bash

# Copyright (c) 2019 Hamza Merzic

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

if [ "$#" -ne 1 ] || ! [ -f "$1" ]; then
  echo "Usage: $0 FILE" >&2
  exit 1
fi

mkdir -p results

clean_mesh='<!DOCTYPE FilterScript>
  <FilterScript>
   <filter name="Remove Duplicate Faces"/>
   <filter name="Remove Duplicate Vertices"/>
   <filter name="Remove Faces from Non Manifold Edges"/>
   <filter name="Re-Compute Face Normals"/>
   <filter name="Re-Compute Vertex Normals">
    <Param enum_val1="By Angle" type="RichEnum" enum_val2="By Area" value="0" enum_val3="As defined by N. Max" description="Weighting Mode:" tooltip="" name="weightMode" enum_cardinality="4" enum_val0="None (avg)"/>
   </filter>
  </FilterScript>'


compute_geometry='<!DOCTYPE FilterScript>
  <FilterScript>
   <filter name="Transform: Scale, Normalize">
    <Param description="X Axis" type="RichFloat" tooltip="Scaling" value="100" name="axisX"/>
    <Param description="Y Axis" type="RichFloat" tooltip="Scaling" value="1" name="axisY"/>
    <Param description="Z Axis" type="RichFloat" tooltip="Scaling" value="1" name="axisZ"/>
    <Param description="Uniform Scaling" type="RichBool" tooltip="If selected an uniform scaling (the same for all the three axis) is applied (the X axis value is used)" value="true" name="uniformFlag"/>
    <Param description="Center of scaling:" enum_cardinality="3" type="RichEnum" enum_val1="barycenter" tooltip="Choose a method" value="0" enum_val2="custom point" name="scaleCenter" enum_val0="origin"/>
    <Param description="Custom center" type="RichPoint3f" x="0" tooltip="This scaling center is used only if the custom point option is chosen." z="0" name="customCenter" y="0"/>
    <Param description="Scale to Unit bbox" type="RichBool" tooltip="If selected, the object is scaled to a box whose sides are at most 1 unit lenght" value="false" name="unitFlag"/>
    <Param description="Freeze Matrix" type="RichBool" tooltip="The transformation is explicitly applied, and the vertex coordinates are actually changed" value="true" name="Freeze"/>
    <Param description="Apply to all visible Layers" type="RichBool" tooltip="If selected the filter will be applied to all visible mesh layers" value="false" name="allLayers"/>
   </filter>
   <xmlfilter name="Compute Geometric Measures"/>
  </FilterScript>'

{
infile=$1
bname=$(basename "$infile")
outfile="results/${bname%.*}.dae"
outfile_tmp="results/${bname%.*}.stl"
logfile1="results/${bname%.*}_tmp.log"
logfile2="results/${bname%.*}.log"
rm -f $outfile $outfile_tmp $logfile1 $logfile2
assimp export $infile $outfile_tmp
assimp export $outfile_tmp $outfile
meshlabserver -l $logfile1 -i $outfile -o $outfile -s <(echo -e $clean_mesh)
meshlabserver -l $logfile2 -i $outfile -s <(echo -e $compute_geometry)
} &> /dev/null