javascript - Three.js SpotLight class on an animating JSON mesh -


i'm trying grasp on three.js light classes. i've tinkered around three.js example in attempt 3d mesh model screen , add basic rotate animation it.

how achieve static light source on moving object? light reflected object seems follow path along rotation.

here's code: http://codepen.io/jagomez8/pen/bzbyez

i've switched out various other light classes think issue lies in meshphongmaterial. when apply flatshading material renders desired result except flat gets.the relevant code on line 105.

if ( ! detector.webgl ) detector.addgetwebglmessage();          var renderer = new three.webglrenderer();          var camera = new three.perspectivecamera( 35, window.innerwidth / window.innerheight, 1, 1000 );          var controls = new three.orbitcontrols( camera, renderer.domelement );          var scene = new three.scene();         var egg;          var matfloor = new three.meshphongmaterial();         var matbox = new three.meshphongmaterial( { color: 0x4080ff } );          var geofloor = new three.boxgeometry( 2000, 1, 2000 );         var geobox = new three.boxgeometry( 3, 1, 2 );          var mshfloor = new three.mesh( geofloor, matfloor );         var mshbox = new three.mesh( geobox, matbox );          var ambient = new three.ambientlight( 0xffffff, 0.1 );          var spotlight = new three.spotlight( 0xffffff, 1 );         var lighthelper;          var gui, guielements, param = { color: '0xffffff' };          function init() {              renderer.shadowmap.enabled = true;             renderer.shadowmap.type = three.pcfsoftshadowmap;              renderer.gammainput = true;             renderer.gammaoutput = true;              camera.position.set( 65, 8, - 10 );              spotlight.position.set( 15, 40, 35 );             spotlight.castshadow = true;             spotlight.angle = math.pi / 4;             spotlight.penumbra = 0.05;             spotlight.decay = 2;             spotlight.distance = 200;             spotlight.shadow.mapsize.width = 1024;             spotlight.shadow.mapsize.height = 1024;             spotlight.shadow.camera.near = 1;             spotlight.shadow.camera.far = 200;              lighthelper = new three.spotlighthelper( spotlight );              matfloor.color.set( 0x808080 );              mshfloor.receiveshadow = true;             mshfloor.position.set( 0, - 0.05, 0 );              mshbox.castshadow = true;             mshbox.position.set( 40, 1.8, 0 );              scene.add( camera );             scene.add( mshfloor );             scene.add( mshbox );             scene.add( ambient );             scene.add( spotlight );             scene.add( new three.axishelper( 10 ) );             scene.add( lighthelper );              document.body.appendchild( renderer.domelement );             renderer.setsize( window.innerwidth, window.innerheight );              controls.addeventlistener( 'change', render );             controls.mindistance = 20;             controls.maxdistance = 500;             controls.maxpolarangle = math.pi / 2;             controls.enablepan = false;             controls.target.copy( mshbox.position );             controls.update();              window.addeventlistener( 'resize', onresize, false );               var manager = new three.loadingmanager();             manager.onprogress = function( item, loaded, total ) {                  console.log( item, loaded, total );              };              var onprogress = function( xhr ) {                  if ( xhr.lengthcomputable ) {                      var percentcomplete = xhr.loaded / xhr.total * 100;                     console.log( math.round( percentcomplete, 2 ) + '% downloaded' );                  }              };              var onerror = function( xhr ) {             };              var loader = new three.jsonloader( manager );             loader.load( 'http://alexgdm.com/egg.json', function( geometry, material ) {                 ///****3d mesh***///                 egg = new three.mesh( geometry, new three.meshphongmaterial( { ambient: 0x050505, color: 0x0033ff, specular: 0x555555, shininess: 30/*, shading: three.flatshading */}  )  );                 egg.position.set(0, 1, 1);                   scene.add( egg );                 animate();               }, onprogress, onerror );          }          function onresize() {              renderer.setsize( window.innerwidth, window.innerheight );             camera.aspect = ( window.innerwidth / window.innerheight );             camera.updateprojectionmatrix();          }          function render() {              lighthelper.update(); // required             renderer.render( scene, camera );          }          function animate() {             requestanimationframe( animate );             egg.rotation.y += 0.01;              renderer.render( scene, camera );         }          function cleargui() {              if ( gui ) gui.destroy();              gui = new dat.gui();              gui.open();          }          function buildgui() {              cleargui();              addgui( 'light color', spotlight.color.gethex(), function( val ) {                  spotlight.color.sethex( val );                 render();              }, true );              addgui( 'intensity', spotlight.intensity, function( val ) {                  spotlight.intensity = val;                 render();              }, false, 0, 2 );              addgui( 'distance', spotlight.distance, function( val ) {                  spotlight.distance = val;                 render();              }, false, 0, 200 );              addgui( 'angle', spotlight.angle, function( val ) {                  spotlight.angle = val;                 render();              }, false, 0, math.pi / 3 );              addgui( 'penumbra', spotlight.penumbra, function( val ) {                  spotlight.penumbra = val;                 render();              }, false, 0, 1 );              addgui( 'decay', spotlight.decay, function( val ) {                  spotlight.decay = val;                 render();              }, false, 1, 2 );          }          function addgui( name, value, callback, iscolor, min, max ) {              var node;             param[ name ] = value;              if ( iscolor ) {                  node = gui.addcolor( param, name ).onchange( function() {                      callback( param[ name ] );                  } );              } else if ( typeof value == 'object' ) {                  node = gui.add( param, name, value ).onchange( function() {                      callback( param[ name ] );                  } );              } else {                  node = gui.add( param, name, min, max ).onchange( function() {                      callback( param[ name ] );                  } );              }              return node;          }          init();          buildgui();          render();

your egg-shaped model invalid. in particular, vertex normals not correct.

it appears vertex normals have y-component , z-component switched. try remapping them, , setting .y = -.z, , .z = .y.

or, call

geometry.computevertexnormals();

that should result in reasonable vertex normals.

three.vertexnormalshelper can used view normals, if want.

three.js r.77


-

Comments

Post a Comment

Popular posts from this blog

scala - 'wrong top statement declaration' when using slick in IntelliJ -

Image
i'm porting project scala 2.9 2.10, therefore have use slick instead of scalaquery. i'm using slick 2.1.0 since supports ms access. according this tutorial , upgrade guide changed robs object class , added val robs : why error message wrong top statement declaration , how rid of it? edit: i'm new scala... according this question seems can't put val outside of methods or classes, right? code above directly in packge. right approach slick then? should move code in class or trait? according this changed val robs = tablequery[robs] to object robs extends tablequery(new robs(_)) {} . no warnings or errors anymore. :)
Read more

c# - DevExpress.Wpf.Grid.InfiniteGridSizeException was unhandled -

Image
when using devexpress, see error: devexpress.wpf.grid.infinitegridsizeexception unhandled message="by default, infinite grid height not allowed since grid rows rendered , hence grid work slowly. fix issue, should place grid container give finite height grid, or should manually specify grid's height or maxheight. note can avoid exception setting gridcontrol.allowinfinitegridsize static property true, in case grid run slowly." the problem dxgrid has infinite height. to fix, set height non-infinite. snoop absolutely invaluable this: if "height" xaml element infinite (i.e. 0 or nan ), can set using one of following: option 1: height="{binding path=actualheight, relativesource={relativesource mode=findancestor, ancestortype=uielement}}" option 2: verticalalignment="stretch" option 3: height="auto" hint: use verticalalignment="stretch" if child of grid <rowdefinition height=
Read more

PySide and Qt Properties: Connecting signals from Python to QML -

i trying run simple pyside appliccation design made in qml. call function in qml python in separated thread. i have following qml view: import qt 4.7 rectangle { visible: true width: 100; height: 100 color: "lightgrey" text { id: datestr objectname: "datestr" x: 10 y: 10 text: "init text" font.pixelsize: 12 function updatedata(text) { datestr.text = qstr(text) console.log("you said: " + text) } } } here application: some imports.... #!/usr/bin/python import sys import time pyside import qtdeclarative, qtcore pyside.qtgui import qapplication pyside.qtdeclarative import qdeclarativeview the qthread worker.... #worker thread class worker(qtcore.qthread): updateprogress = qtcore.signal(int) def __init__(self, child): qtcore.qthread.__init__(self) self.child = child def run(self):
Read more