This file was provided by the National Institute of Standards and Technology, and is part of the X3D Conformance Test Suite, available at http://www.nist.gov/vrml.html The information contained within this file is provided for use in establishing conformance to the ISO VRML97 Specification. Conformance to this test does not imply recommendation or endorsement by the National Institute of Standards and Technology (NIST). This software can be redistributed and/or modified freely provided that any derivative works bear some notice that they are derived from it, and any modified versions bear some notice that they have been modified.
Original NIST Conformance Testing Group, https://www.itl.nist.gov/div897/ctg/vrml
Interactive Conformance Testing for VRML, Mary Brady and Lynn Rosenthal, NIST, created 8 September 2010 and updated 25 August 2016, https://www.nist.gov/itl/ssd/information-systems-group/interactive-conformance-testing-vrml
Correct definition and compliance of this conformance scene is maintained by the X3D Working Group, https://www.web3d.org/working-groups/x3d
This tests check the boundary condition of 500 children per grouping node. A Billboard is defined with 500 children in its "children" field. Section 7.3 (Minimum Support Requirements) of the VRML specifications 500 children within a single grouping node. The test should generate 500 default color spheres and radius 0.3 meters.
Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html
X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit