Hi David, Tks for your reply.
I forgot to mention that the whole cube gets black (including the back face where the light is directed to). I put the demo online so that you undertand what I am on about (http:// www.sylvaingodbert.net/away3d/). Cheers Sylvain On 7 fév, 20:30, David Lenaerts <[email protected]> wrote: > Hi Sylvain, > > Makes perfect sense to me for a point light that's placed behind the cube to > cause completely dark sides (since they're pointed away from the light, > there's no way a ray starting from the light's position could reach that > side of the faces). What you could do is to try and add an ambient light to > the scene in addition to the point light, and see if that helps. > > Cheers, > David > > On Sun, Feb 7, 2010 at 1:36 PM, Sylvain Godbert > <[email protected]>wrote: > > > > > Hi all, > > > I made a little demo using "PhongPBMaterial". I have a simple cube > > that has a diffuse texture and a normal map texture. I made a > > PointLight3D light orbiting around this cube. > > > The weird thing is that when the light goes behind the cube, the > > entire cube gets no light at all (the cube becomes pitch black and > > therefore disappears) > > > The code to instanciate my cube and the material is the following : > > > var normalMap = new _Texture_bois_nmp().bitmapData; > > var diffuseMap = new _Texture_bois().bitmapData; > > _phongShaderMaterial = new > > PhongPBMaterial( diffuseMap,normalMap,_Cube,null,{specular: 0.5,gloss: > > 20,smooth : true}); > > > _Cube = new Cube(); > > _Cube.width = 150; > > _Cube.height = 80; > > _Cube.depth = 80; > > _Cube.material = _phongShaderMaterial; > > _View.scene.addChild(_Cube); > > > The declaration of the light is done like this : > > > _pointLight = new PointLight3D({color: 0xffeedd}); > > _View.scene.addChild(_pointLight); > > _pointLight.brightness = 0.8; > > _pointLight.specular = 0.5; > > _pointLight.radius = 56000; > > _pointLight.fallOff = 60000; > > _pointLight.x=-150; > > _pointLight.z = -200; > > > Am I missing a parameter somewhere that I should set? Like : > > "cube.getsLightWhenLightIsBehind=true" :) ? > > > Sylvain > > --http://www.derschmale.com
