assimp.assimp/test/models/AMF/test_with_mat.amf

<?xml version="1.0" encoding="utf-8"?>
<amf unit="inch" version="1.1">
  <metadata type="name">Split Pyramid</metadata>
  <metadata type="author">John Smith</metadata> 
  <object id="1">
    <mesh>
      <vertices>
        <vertex><coordinates><x>0</x><y>0</y><z>0</z></coordinates></vertex>
        <vertex><coordinates><x>1</x><y>0</y><z>0</z></coordinates></vertex>
        <vertex><coordinates><x>0</x><y>1</y><z>0</z></coordinates></vertex>
        <vertex><coordinates><x>1</x><y>1</y><z>0</z></coordinates></vertex>
        <vertex><coordinates><x>0.5</x><y>0.5</y><z>1</z></coordinates></vertex>
      </vertices>
      <volume materialid="2">
        <metadata type="name">Hard side</metadata> 
        <triangle><v1>2</v1><v2>1</v2><v3>0</v3></triangle>
        <triangle><v1>0</v1><v2>1</v2><v3>4</v3></triangle>
        <triangle><v1>4</v1><v2>1</v2><v3>2</v3></triangle>
        <triangle><v1>0</v1><v2>4</v2><v3>2</v3></triangle>
      </volume>
      <volume materialid="3">
        <metadata type="name">Soft side</metadata> 
        <triangle><v1>2</v1><v2>3</v2><v3>1</v3></triangle>
        <triangle><v1>1</v1><v2>3</v2><v3>4</v3></triangle>
        <triangle><v1>4</v1><v2>3</v2><v3>2</v3></triangle>
        <triangle><v1>4</v1><v2>2</v2><v3>1</v3></triangle>
      </volume>
    </mesh>
  </object>
  <material id="2">
    <metadata type="name">Hard material</metadata>
    <color><r>0.1</r><g>0.1</g><b>0.1</b></color>
  </material>
  <material id="3">
    <metadata type="name">Soft material</metadata>
    <color><r>0</r><g>0.9</g><b>0.9</b><a>0.5</a></color>
  </material>
</amf>