#################################################################################################### # # Invoking X3D model self-test: # # $ python CloudsProcedural1.py # # Python package x3d.py package is available on PyPI for import. # This approach simplifies Python X3D deployment and use. # https://pypi.org/project/x3d # # Installation: # pip install x3d # or # python -m pip install x3d # # Developer options for loading x3d package in other Python programs: # # from x3d import * # preferred approach, terser source that avoids x3d.* class prefixes # # or # import x3d # traditional way to subclass x3d package, all classes require x3d.* prefix, # # but python source is very verbose, for example x3d.Material x3d.Shape etc. # # X3dToPython.xslt stylesheet insertPackagePrefix=true supports this option. # #################################################################################################### from x3d import * newModel=X3D(profile='Immersive',version='3.2', head=head( children=[ meta(content='CloudsProcedural1.x3d',name='title'), meta(content='X3D utilizing ecmascript to develop quasi volumetric 3D clouds from png image textured billboard nodes.',name='description'), meta(content='Capt Darren W. Murphy',name='creator'), meta(content='1 November 2007',name='created'), meta(content='20 October 2019',name='modified'), meta(content='https://savage.nps.edu/Savage/Environment/Atmosphere/CloudsProcedural1.x3d',name='identifier'), meta(content='X3D-Edit, https://www.web3d.org/x3d/content/README.X3D-Edit.html',name='generator'), meta(content='../../license.html',name='license'), meta(content='fix links',name='TODO')]), Scene=Scene( # A png image file for the cloud texture must be designated in the ecmascript node. children=[ WorldInfo(title='CloudsProcedural1.x3d'), Viewpoint(description='Main',jump=False,orientation=(0,1,0,1.57),position=(50000,1000,42000)), Viewpoint(description='Light House Tower',jump=False,orientation=(0,1,0,1.3),position=(45000,1290,44000)), Viewpoint(description='centerWest',jump=False,orientation=(0,1,0,2.5),position=(48000,1000,20000)), Background(groundColor=[(0,0,1)],skyColor=[(0,0,1)]), DirectionalLight(ambientIntensity=1,direction=(-1,0,0),global_=True), Group(DEF='Terrain', children=[ Transform(scale=(50,50,50),translation=(25000,0,25000), children=[ Inline(url=["../../Locations/MontereyBayCalifornia/MontereyBayLargeMesh.x3d","https://savage.nps.edu/Savage/Locations/MontereyBayCalifornia/MontereyBayLargeMesh.x3d","../../Locations/MontereyBayCalifornia/MontereyBayLargeMesh.wrl","https://savage.nps.edu/Savage/Locations/MontereyBayCalifornia/MontereyBayLargeMesh.wrl"])]), Transform(rotation=(1,0,0,1.57),translation=(25000,0,25000), children=[ Shape( geometry=Rectangle2D(size=(77000,55000)), appearance=Appearance( texture=ImageTexture(url=["ocean.png","https://savage.nps.edu/Savage/Environment/Atmosphere/ocean.png"])))])]), Group(DEF='Placemarks', children=[ Transform(scale=(50,50,50),translation=(45000,30,44000), children=[ Inline(url=["Lighthouse.x3d","https://savage.nps.edu/Savage/Environment/Atmosphere/Lighthouse.x3d","Lighthouse.wrl","https://savage.nps.edu/Savage/Environment/Atmosphere/Lighthouse.wrl"])])]), Group(DEF='Clouds', children=[ Transform(DEF='Cumulus'), Transform(DEF='Cirrus'), Script(DEF='PixelScript',directOutput=True, field=[ field(accessType='initializeOnly',name='Cumulus',type='SFNode', children=[ Transform(USE='Cumulus')]), field(accessType='initializeOnly',name='Cirrus',type='SFNode', children=[ Transform(USE='Cirrus')])], sourceCode=""" ecmascript: function cumulustranslation() // These values designate the boundary location of the cloud { X = 50000*Math.random(); // X horizontal range Y = 1000 + 300*Math.random(); // Y vertical base + range Z = 50000*Math.random(); // z horizontal range randomt = new String(X+' '+Y+' '+Z); return randomt; } function cumulusscale() // these values scale a cloud within a designated size { maxscale = 1; scale = Math.round(9+maxscale*Math.random()); X = 1.5*scale; Y = scale; Z = scale; randomscale = new String(X+' '+Y+' '+Z); return randomscale; } function cirrustranslation() // These values designate the boundary location of the cloud { X = 50000*Math.random(); // X horizontal range Y = 8000 + 1000*Math.random(); // Y vertical base + range Z = 50000*Math.random(); // z horizontal range randomt = new String(X+' '+Y+' '+Z); return randomt; } function cirrusscale() // these values scale a cloud within a designated size { maxscale = 1; scale = Math.round(9+maxscale*Math.random()); X = 1.5*scale; Y = 2*Math.random(); Z = 1.5*scale; randomscale = new String(X+' '+Y+' '+Z); return randomscale; } function cumulussectiontranslation() // These random values place another portion of cumulus type cloud { randomtheta = 6.28319*Math.random(); randomphi = .7854*Math.random(); randomradius = 90 + 5*Math.random();//the first whole number should be close to the sectionradius X = randomradius*Math.cos(randomtheta)*Math.sin(randomphi); Z = randomradius*Math.sin(randomtheta)*Math.sin(randomphi); Y = randomradius*Math.cos(randomphi); randomt = new String(X+' '+Y+' '+Z); return randomt; } function cirrussectiontranslation() // These random values place another portion of cirrus type cloud { randomtheta = 6.28319*Math.random(); randomphi = .7854*Math.random(); randomradius = 90 + 5*Math.random();//the first whole number should be close to the sectionradius X = randomradius*Math.cos(randomtheta)*Math.sin(randomphi); Z = randomradius*Math.sin(randomtheta)*Math.sin(randomphi); Y = randomradius*Math.cos(randomphi); randomt = new String(X+' '+Y+' '+Z); return randomt; } function rotation() // This random value is for the billboard rotation not used in this script { radians = 6.28*Math.random(); randomr = new String('0 0 1 ' + radians ); return randomr; } function cumulus() { maxi = 10; // number of clouds maxj = 5; // denotes how many portions affecting the size of the cloud maxk = 8; // number of billboards indicating cloud density sectionradius = 100; //radius of individual cloud sections for (var i=0; i < maxi; i++) { CloudStringA = ' Transform { \n' + ' scale '+ cumulusscale() + ' \n' + ' translation '+ cumulustranslation() + ' \n' + // cloud placement ' children [ \n'; CloudStringB = new Array(); CloudStringF = new Array(); for (var j=0; j < maxj; j++) { radius = 0; CloudStringB[j]= ' Transform { \n' + ' translation '+ cumulussectiontranslation() + ' \n' + // section placement ' children [ \n'; CloudStringC = new Array(); image = new String(); for (var k=1; k < maxk; k++) // maxk value denotes how many textured billboards make up the cloud { randomtheta = 6.28319*Math.random(); randomphi = 1.57079*Math.random(); radius = radius+(sectionradius/maxk); // radius incremental steps based on billow radius and max billboards X = radius*Math.cos(randomtheta)*Math.sin(randomphi); Z = radius*Math.sin(randomtheta)*Math.sin(randomphi); Y = radius*Math.cos(randomphi); if (Y <= 30) //cloud shading and lighting control { image = ' \"Spheretexture.png\" \"https://savage.nps.edu/Savage/Environment/Spheretexture.png\" \n'; } else { image = ' \"Spheretexture.png\" \"https://savage.nps.edu/Savage/Environment/Spheretexture.png\" \n'; } Billboardtranslation = new String(X+' '+Y+' '+Z); CloudStringC[k] = ' Transform { \n' + ' translation '+ Billboardtranslation + ' \n' + // random billboard placement within radius designated above ' children [ \n' + ' Billboard { \n' + ' axisOfRotation 0 0 0 \n' + // 0 0 0 designates rotation on all axis ' children [ \n' + ' Transform { \n' + ' rotation 0 0 0 0 \n' + // a rotation of the individual billboards can be defined ' children [ \n' + ' Shape { \n' + ' appearance Appearance { \n' + ' material Material { \n' + ' } \n' + ' texture ImageTexture { \n' + ' url [ ' + image + ' ] \n' + ' } \n' + ' } \n' + ' geometry Sphere { \n' + ' radius 50 \n' + ' } \n' + ' } \n' + ' ] \n' + ' } \n' + ' ] \n' + ' } \n' + ' ] \n' + ' } \n'; } CloudStringD = CloudStringC.join(' '); CloudStringE = ' ] \n' + ' } \n'; CloudStringF[j] = CloudStringB[j] + CloudStringD +CloudStringE; } CloudStringG = CloudStringF.join(' '); CloudStringH = ' ] \n' + ' } \n' + '######################################################### \n'; CloudString = CloudStringA + CloudStringG + CloudStringH; newNode = Browser.createVrmlFromString(CloudString); Cumulus.children[i] = newNode[0]; } } function cirrus() { maxi = 2; // number of clouds maxj = 5; // denotes how many portions affecting the size of the cloud maxk = 8; // number of billboards indicating cloud density sectionradius = 1000; //radius of individual cloud sections for (var i=0; i < maxi; i++) { CloudStringA = ' Transform { \n' + ' scale '+ cirrusscale() + ' \n' + ' translation '+ cirrustranslation() + ' \n' + // cloud placement ' children [ \n'; CloudStringB = new Array(); CloudStringF = new Array(); for (var j=0; j < maxj; j++) { radius = 0; CloudStringB[j]= ' Transform { \n' + ' translation '+ cirrussectiontranslation() + ' \n' + // section placement ' children [ \n'; CloudStringC = new Array(); for (var k=1; k < maxk; k++) // maxk value denotes how many textured billboards make up the cloud { randomtheta = 6.28319*Math.random(); randomphi = 1.57079*Math.random(); radius = radius+(sectionradius/maxk); // radius incremental steps based on section radius and max billboards X = radius*Math.cos(randomtheta)*Math.sin(randomphi); Z = radius*Math.sin(randomtheta)*Math.sin(randomphi); Y = radius*Math.cos(randomphi); Billboardtranslation = new String(X+' '+Y+' '+Z); CloudStringC[k] = ' Transform { \n' + ' translation '+ Billboardtranslation + ' \n' + // random billboard placement within radius designated above ' children [ \n' + ' Billboard { \n' + ' axisOfRotation 0 0 0 \n' + // 0 0 0 designates rotation on all axis ' children [ \n' + ' Transform { \n' + ' rotation ' + rotation() + ' \n' + ' children [ \n' + ' Shape { \n' + ' appearance Appearance { \n' + ' material Material { \n' + ' } \n' + ' texture ImageTexture { \n' + ' url [\"cloudtexture3.png\" \"https://savage.nps.edu/Savage/Environment/cloudtexture1_4.png\" ] \n' + ' } \n' + ' } \n' + ' geometry IndexedFaceSet { \n' + // define type of geometry to texture ' coordIndex [ 0, 1, 2, 3 ] \n' + ' solid FALSE \n' + ' coord Coordinate { \n' + ' point [ 500 500 0, \n' + // define size of the geometry. Here 100 meter 2D square. ' 500 -500 0, \n' + ' -500 -500 0, \n' + ' -500 500 0 ] \n' + ' } \n' + ' } \n' + ' } \n' + ' ] \n' + ' } \n' + ' ] \n' + ' } \n' + ' ] \n' + ' } \n'; } CloudStringD = CloudStringC.join(' '); CloudStringE = ' ] \n' + ' } \n'; CloudStringF[j] = CloudStringB[j] + CloudStringD +CloudStringE; } CloudStringG = CloudStringF.join(' '); CloudStringH = ' ] \n' + ' } \n' + '######################################################### \n'; CloudString = CloudStringA + CloudStringG + CloudStringH; newNode = Browser.createVrmlFromString(CloudString); Cirrus.children[i] = newNode[0]; } } function initialize() { cumulus(); cirrus(); } """)])]) ) # X3D model complete #################################################################################################### # Self-test diagnostics #################################################################################################### print('Self-test diagnostics for CloudsProcedural1.py:') if metaDiagnostics(newModel): # built-in utility method in X3D class print(metaDiagnostics(newModel)) # display meta info, hint, warning, error, TODO values in this model # print('check newModel.XML() serialization...') newModelXML= newModel.XML() # test export method XML() for exceptions during export newModel.XMLvalidate() # print(newModelXML) # diagnostic try: # print('check newModel.VRML() serialization...') newModelVRML=newModel.VRML() # test export method VRML() for exceptions during export # print(prependLineNumbers(newModelVRML)) # debug print("Python-to-VRML export of VRML output successful", flush=True) except Exception as err: # usually BaseException # https://stackoverflow.com/questions/18176602/how-to-get-the-name-of-an-exception-that-was-caught-in-python print("*** Python-to-VRML export of VRML output failed:", type(err).__name__, err) if newModelVRML: # may have failed to generate print(prependLineNumbers(newModelVRML, err.lineno)) try: # print('check newModel.JSON() serialization...') newModelJSON=newModel.JSON() # test export method JSON() for exceptions during export # print(prependLineNumbers(newModelJSON)) # debug print("Python-to-JSON export of JSON output successful (under development)") except Exception as err: # usually SyntaxError print("*** Python-to-JSON export of JSON output failed:", type(err).__name__, err) if newModelJSON: # may have failed to generate print(prependLineNumbers(newModelJSON,err.lineno)) print("python CloudsProcedural1.py load and self-test diagnostics complete.")