complex_rgb_alpha.x3d

 (.x3d scene, pretty-print source, statistics, info & logs, X3DOM home)

Test browser ability to map an RGB with alpha-opacity PNG file onto the faces of complex geometry. An red, green and blue version of the VTS logo, with transparent background should onto an Extrusion (palette plus binary transparency), an Elevationgrid (RGB plus alpha) and an IndexedFaceSet (RGB plus binary transparency). Because alpha opacity is set to 0 (transparent) for the image background on the Extrusion (left) and IndexedFaceSet (right), and binary transparency is set for the PNG image mapped to the middle geometry (the ElevationGrid), all geometry will be transparent, except for the VTS logo. The transparent image will be mapped to each geometry using default texture mapping rules.

 

X3D Scene   Metadata
archive   https://www.web3d.org/x3d/content/examples/ConformanceNist/Appearance/ImageTexture
title   complex_rgb_alpha.x3d
Image   complex_rgb_alpha-front.jpg
Image   complex_rgb_alpha-rear.jpg
Image   complex_rgb_alpha-top.jpg
Image   complex_rgb_alpha-bottom.jpg
reference   http://www.nist.gov/vrml.html
reference   http://www.itl.nist.gov/div897/ctg/vrml/vrml.html
creator   http://www.itl.nist.gov/div897/ctg/vrml/members.html
disclaimer   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.
reference   Original NIST Conformance Testing Group, https://www.itl.nist.gov/div897/ctg/vrml
reference   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
info   Correct definition and compliance of this conformance scene is maintained by the X3D Working Group, https://www.web3d.org/working-groups/x3d
translator   Michael Kass NIST, Don Brutzman NPS
translated   21 January 2001
modified   28 August 2023
description   Test browser ability to map an RGB with alpha-opacity PNG file onto the faces of complex geometry. An red, green and blue version of the VTS logo, with transparent background should onto an Extrusion (palette plus binary transparency), an Elevationgrid (RGB plus alpha) and an IndexedFaceSet (RGB plus binary transparency). Because alpha opacity is set to 0 (transparent) for the image background on the Extrusion (left) and IndexedFaceSet (right), and binary transparency is set for the PNG image mapped to the middle geometry (the ElevationGrid), all geometry will be transparent, except for the VTS logo. The transparent image will be mapped to each geometry using default texture mapping rules.
identifier   https://www.web3d.org/x3d/content/examples/ConformanceNist/Appearance/ImageTexture/complex_rgb_alpha.x3d
generator   Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html
generator   X3D-Edit 4.0, https://savage.nps.edu/X3D-Edit
license   ../../license.html
 
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