<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Here’s a an example removing setUSE(). See uses of MaterialLightBlue.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>import classpath</p><p class=MsoNormal>from org.web3d.x3d.jsail.Core.X3DObject import X3DObject as X3D</p><p class=MsoNormal>from org.web3d.x3d.jsail.fields.SFStringObject import SFStringObject as SFString</p><p class=MsoNormal>from org.web3d.x3d.jsail.Core.headObject import headObject as head</p><p class=MsoNormal>from org.web3d.x3d.jsail.Core.metaObject import metaObject as meta</p><p class=MsoNormal>from org.web3d.x3d.jsail.Core.SceneObject import SceneObject as Scene</p><p class=MsoNormal>from org.web3d.x3d.jsail.Grouping.GroupObject import GroupObject as Group</p><p class=MsoNormal>from org.web3d.x3d.jsail.Navigation.ViewpointObject import ViewpointObject as Viewpoint</p><p class=MsoNormal>from org.web3d.x3d.jsail.fields.SFVec3fObject import SFVec3fObject as SFVec3f</p><p class=MsoNormal>from org.web3d.x3d.jsail.Grouping.TransformObject import TransformObject as Transform</p><p class=MsoNormal>from org.web3d.x3d.jsail.fields.SFRotationObject import SFRotationObject as SFRotation</p><p class=MsoNormal>from org.web3d.x3d.jsail.Shape.ShapeObject import ShapeObject as Shape</p><p class=MsoNormal>from org.web3d.x3d.jsail.Geometry3D.SphereObject import SphereObject as Sphere</p><p class=MsoNormal>from org.web3d.x3d.jsail.Shape.AppearanceObject import AppearanceObject as Appearance</p><p class=MsoNormal>from org.web3d.x3d.jsail.Shape.MaterialObject import MaterialObject as Material</p><p class=MsoNormal>from org.web3d.x3d.jsail.fields.SFColorObject import SFColorObject as SFColor</p><p class=MsoNormal>from org.web3d.x3d.jsail.Texturing.ImageTextureObject import ImageTextureObject as ImageTexture</p><p class=MsoNormal>from org.web3d.x3d.jsail.fields.MFStringObject import MFStringObject as MFString</p><p class=MsoNormal>from org.web3d.x3d.jsail.Text.TextObject import TextObject as Text</p><p class=MsoNormal>from org.web3d.x3d.jsail.Text.FontStyleObject import FontStyleObject as FontStyle</p><p class=MsoNormal>MaterialLightBlue = None;</p><p class=MsoNormal>X3D0 = X3D() \</p><p class=MsoNormal> .setProfile("Immersive") \</p><p class=MsoNormal> .setVersion("3.3") \</p><p class=MsoNormal> .setHead(head() \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.x3d") \</p><p class=MsoNormal> .setName("title") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("Simple X3D scene example: Hello World!") \</p><p class=MsoNormal> .setName("description") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("30 October 2000") \</p><p class=MsoNormal> .setName("created") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("28 July 2015") \</p><p class=MsoNormal> .setName("modified") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("Don Brutzman") \</p><p class=MsoNormal> .setName("creator") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.tall.png") \</p><p class=MsoNormal> .setName("Image") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://en.wikipedia.org/wiki/Hello_world") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("https://en.wikipedia.org/wiki/Hello#.22Hello.2C_World.22_computer_program") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("https://en.wikipedia.org/wiki/\"Hello,_World!\"_program") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://en.wikibooks.org/w/index.php?title=Computer_Programming/Hello_world") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://www.HelloWorldExample.net") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://www.web3D.org") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://www.web3d.org/realtime-3d/news/internationalization-x3d") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://www.web3d.org/x3d/content/examples/HelloWorld.x3d") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://X3dGraphics.com/examples/X3dForAdvancedModeling/HelloWorldScenes") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://X3dGraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.x3d") \</p><p class=MsoNormal> .setName("identifier") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("http://www.web3d.org/x3d/content/examples/license.html") \</p><p class=MsoNormal> .setName("license") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit") \</p><p class=MsoNormal> .setName("generator") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal># Alternate encodings: VRML97, X3D ClassicVRML Encoding, X3D Compressed Binary Encoding (CBE), X3DOM, JSON </p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.wrl") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.x3dv") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.x3db") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.xhtml") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addMeta(meta() \</p><p class=MsoNormal> .setContent("HelloWorld.json") \</p><p class=MsoNormal> .setName("reference") \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .setScene(Scene() \</p><p class=MsoNormal># Example scene to illustrate X3D nodes and fields (XML elements and attributes) </p><p class=MsoNormal> .addChild(Group() \</p><p class=MsoNormal> .addChild(Viewpoint() \</p><p class=MsoNormal> .setDEF("ViewUpClose") \</p><p class=MsoNormal> .setCenterOfRotation([0,-1,0]) \</p><p class=MsoNormal> .setDescription("Hello world!") \</p><p class=MsoNormal> .setPosition([0,-1,7]) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addChild(Transform() \</p><p class=MsoNormal> .setRotation([0,1,0,3]) \</p><p class=MsoNormal> .addChild(Shape() \</p><p class=MsoNormal> .setGeometry(Sphere() \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .setAppearance(Appearance() \</p><p class=MsoNormal> .setMaterial(MaterialLightBlue = Material() \</p><p class=MsoNormal> .setDEF("MaterialLightBlue") \</p><p class=MsoNormal> .setDiffuseColor([0.1,0.5,1]) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .setTexture(ImageTexture() \</p><p class=MsoNormal> .setDEF("ImageCloudlessEarth") \</p><p class=MsoNormal> .setUrl(["earth-topo.png","earth-topo.jpg","earth-topo-small.gif","http://www.web3d.org/x3d/content/examples/Basic/earth-topo.png","http://www.web3d.org/x3d/content/examples/Basic/earth-topo.jpg","http://www.web3d.org/x3d/content/examples/Basic/earth-topo-small.gif"]) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .addChild(Transform() \</p><p class=MsoNormal> .setTranslation([0,-2,0]) \</p><p class=MsoNormal> .addChild(Shape() \</p><p class=MsoNormal> .setGeometry(Text() \</p><p class=MsoNormal> .setDEF("TextMessage") \</p><p class=MsoNormal> .setString(["Hello","world!"]) \</p><p class=MsoNormal> .setFontStyle(FontStyle() \</p><p class=MsoNormal> .setJustify(["MIDDLE","MIDDLE"]) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> .setAppearance(Appearance() \</p><p class=MsoNormal> .setMaterial(MaterialLightBlue)</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal> ) \</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>X3D0.toFileX3D("HelloWorld_RoundTrip.x3d")</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:yottzumm@gmail.com">John Carlson</a><br><b>Sent: </b>Monday, May 6, 2019 4:52 PM<br><b>To: </b><a href="mailto:brutzman@nps.edu">Brutzman, Donald (Don) (CIV)</a>; <a href="mailto:aono@tut.jp">aono@tut.jp</a>; <a href="mailto:Leonard.Daly@realism.com">Leonard Daly</a><br><b>Cc: </b><a href="mailto:x3d-public@web3d.org">X3D Graphics public mailing list</a><br><b>Subject: </b>RE: questions on X3DJSAIL usage.</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Leonard, can you explain for us how we can write an SAI program avoiding setUSE()? Apparently, my explanations aren’t getting through.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>John<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From: </b><a href="mailto:brutzman@nps.edu">Brutzman, Donald (Don) (CIV)</a><br><b>Sent: </b>Monday, May 6, 2019 2:18 AM<br><b>To: </b><a href="mailto:yottzumm@gmail.com">John Carlson</a>; <a href="mailto:aono@tut.jp">aono@tut.jp</a><br><b>Cc: </b><a href="mailto:x3d-public@web3d.org">X3D Graphics public mailing list</a><br><b>Subject: </b>Re: questions on X3DJSAIL usage.<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On 5/4/2019 4:15 PM, John Carlson wrote:<o:p></o:p></p><p class=MsoNormal>> I’m waiting for a response on whether I should stop using setUSE() (except in cases where > 1 fields are used in a node) in programs using X3DJSAIL.<o:p></o:p></p><p class=MsoNormal>> <o:p></o:p></p><p class=MsoNormal>> Thanks!<o:p></o:p></p><p class=MsoNormal>> <o:p></o:p></p><p class=MsoNormal>> John<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hmmm, perhaps I'm not understanding your question... but here is an attempt at a simple answer. Plus some additional syntactic sugar.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1. I think a programmer utilizes setUSE() whenever you need to set a USE value on a node.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Example excerpts:<o:p></o:p></p><p class=MsoNormal>http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>HelloWorld.x3d<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> <Transform translation='0 -2 0'><o:p></o:p></p><p class=MsoNormal> <Shape><o:p></o:p></p><p class=MsoNormal> <Text DEF='TextMessage' string='"Hello" "world!"'><o:p></o:p></p><p class=MsoNormal> <FontStyle justify='"MIDDLE" "MIDDLE"'/><o:p></o:p></p><p class=MsoNormal> </Text><o:p></o:p></p><p class=MsoNormal> <Appearance><o:p></o:p></p><p class=MsoNormal> <Material USE='MaterialLightBlue'/><o:p></o:p></p><p class=MsoNormal> </Appearance><o:p></o:p></p><p class=MsoNormal> </Shape><o:p></o:p></p><p class=MsoNormal> </Transform><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>HelloWorld.java<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> .addChild(new TransformObject().setTranslation(0.0f,-2.0f,0.0f)<o:p></o:p></p><p class=MsoNormal> .addChild(new ShapeObject()<o:p></o:p></p><p class=MsoNormal> .setGeometry(new TextObject("TextMessage").setString(new MFStringObject("\"Hello\" \"world!\""))<o:p></o:p></p><p class=MsoNormal> .setFontStyle(new FontStyleObject().setJustify(FontStyleObject.JUSTIFY_MIDDLE_MIDDLE)))<o:p></o:p></p><p class=MsoNormal> .setAppearance(new AppearanceObject()<o:p></o:p></p><p class=MsoNormal> .setMaterial(new MaterialObject().setUSE("MaterialLightBlue")))))));<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>HelloWorld.py<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> .addChild(Transform() \<o:p></o:p></p><p class=MsoNormal> .setTranslation(SFVec3f([0,-2,0])) \<o:p></o:p></p><p class=MsoNormal> .addChild(Shape() \<o:p></o:p></p><p class=MsoNormal> .setGeometry(Text() \<o:p></o:p></p><p class=MsoNormal> .setDEF(SFString("TextMessage")) \<o:p></o:p></p><p class=MsoNormal> .setString(MFString(["Hello","world!"])) \<o:p></o:p></p><p class=MsoNormal> .setFontStyle(FontStyle() \<o:p></o:p></p><p class=MsoNormal> .setJustify(MFString(["MIDDLE","MIDDLE"])) \<o:p></o:p></p><p class=MsoNormal> ) \<o:p></o:p></p><p class=MsoNormal> ) \<o:p></o:p></p><p class=MsoNormal> .setAppearance(Appearance() \<o:p></o:p></p><p class=MsoNormal> .setMaterial(Material() \<o:p></o:p></p><p class=MsoNormal> .setUSE(SFString("MaterialLightBlue")) \<o:p></o:p></p><p class=MsoNormal> ) \<o:p></o:p></p><p class=MsoNormal> ) \<o:p></o:p></p><p class=MsoNormal> ) \<o:p></o:p></p><p class=MsoNormal> )<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2. Note that if we start putting field adjustments on the same line, the structure for .java and .py are nearly identical.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Other syntax tightening is further possible in .py version:<o:p></o:p></p><p class=MsoNormal>- no apparent need to wrap SFString() in python syntax<o:p></o:p></p><p class=MsoNormal>- I suspect that MFString() wrapping is also superfluous, hopefully we can just use ["Hello","world!"]<o:p></o:p></p><p class=MsoNormal>- Similarly might try replacing SFVec3f([0,-2,0]) with [0,-2,0] - we're getting more Pythonic now!<o:p></o:p></p><p class=MsoNormal>- indenting with two space characters makes scene-graph structure more evident.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>3. Spent the day refactoring the X3D Examples Archive projects from Netbeans plain-old freeform projects to Netbeans Java freeform projects. This doesn't limit any functionality but it does make Java experimentation much simpler... menu items now include Compile/Run/Debug options.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>4. Am further noticing from above that the following single-string .java construct<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> .setString(new MFStringObject("\"Hello\" \"world!\""))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>is more readable as a String array instead:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> .setString(new MFStringObject(new String[] {"Hello","world!"}))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>or even more simply as:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> .setString(new String[] {"Hello","world!"})<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Have improved X3dToJava.xslt conversions to simplify accordingly. Will rerun all java conversions tonight and hopefully redeploy Web3D example archives tomorrow. Then retest python build tomorrow night.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Also will redeploy X3DJSAIL with this improvement tonight. Have also added initial PointProperties validation for X3Dv4, included source in full.jar for IDE javadoc/debugging, and fixed a number of X3DLoaderDOM geospatial errors.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>all the best, Don<o:p></o:p></p><p class=MsoNormal>-- <o:p></o:p></p><p class=MsoNormal>Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu<o:p></o:p></p><p class=MsoNormal>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<o:p></o:p></p><p class=MsoNormal>X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>