# indexed face set and material

<Scene> <Shape> <Appearance> </Appearance> </Shape> <Shape> <Appearance> </Appearance> </Shape> <Shape> <Appearance> </Appearance> </Shape> </Scene>

One shape has only ony appearance. If different colors for the building elements roof, wall and ground surfaces shall be used, we need to have different shape for these elements. However, they can share the same point set. The following example uses different Material for roo, wall, and ground surfaces.

    	<X3D id="shapedata" width="600px" height="600px" style="float:left">
    	  <Scene>
    	    <Shape>
    	      <!-- roof -->
       	      <Appearance>
         	        <Material diffuseColor="0.980, 0.502, 0.447"> </Material>
       	      </Appearance>
      	      <IndexedFaceSet solid="true" ccw ="true"
       	        coordIndex="  7 4 8 -1 4 5 8 -1 5 6 8 -1 6 7 8 -1">
       	        <Coordinate DEF="pointset" point="-1 0 1, 1 0 1, 1 0 -1, -1 0 -1,
                 	            -1 2 1, 1 2 1, 1 2 -1, -1 2 -1, 0 3 0 " >
       	        </Coordinate>
    	      </IndexedFaceSet>
    	    </Shape>
    	    <Shape>
    	      <!-- wall -->
       	      <Appearance>
         	        <Material diffuseColor="0.753, 0.753, 0.753"> </Material>
       	      </Appearance>
      	      <IndexedFaceSet solid="true" ccw ="true"
       	        coordIndex=" 0 1 5 4 -1 1 2 6 5 -1 2 3 7 6 -1 3 0 4 7 -1">
       	        <Coordinate USE="pointset" >
       	        </Coordinate>
    	      </IndexedFaceSet>
    	    </Shape>
    	    <Shape>
    	      <!-- ground -->
       	      <Appearance>
         	        <Material diffuseColor="0.180, 0.280, 0.230"> </Material>
       	      </Appearance>
      	      <IndexedFaceSet solid="true" ccw ="true"
       	        coordIndex=" 0 3 2 1 -1 ">
       	        <Coordinate USE="pointset" >
       	        </Coordinate>
    	      </IndexedFaceSet>
    	    </Shape>
    	  </Scene>
    	</X3D>