Got you David , it is like a Sun Light actually but directed . Still , it is hard to implement it on objects centered to the scene
On Mon, Jun 7, 2010 at 12:11 PM, David Lenaerts <[email protected]>wrote: > Dot3 only supports directional lights, since the nature of directionals > offer it a very fast way to calculate lighting. > > Now, as for why the directional light doesn't have a position: don't > consider it as a specific light source. Instead, it's typically used for a > strong light source very far away, such as the sun. Of course, it's an > approximation, but again it offers optimizations. The idea is that wherever > you are in the scene, the light always comes from the same direction (hence > the name). If it were to have a position, then the light direction would > change depending on where the lit object is relative to the light (and that > is a point light). > > Hope that clarifies a thing or two! > > David > > On Mon, Jun 7, 2010 at 10:50 AM, Michael Iv <[email protected]> wrote: > >> I did it with PhongColorMaterial actually . Don't know why it doesn't work >> with Dot3 I will try to check it too. >> >> >> On Mon, Jun 7, 2010 at 11:47 AM, Josh <[email protected]>wrote: >> >>> I'm having the same problem Michael, however I can't seem to get the >>> PointLight3D to work with Dot3BitmapMaterials. does anyone know if >>> Dot3s support pointLights? >>> >>> On Jun 7, 8:44 am, Michael Iv <[email protected]> wrote: >>> > It is hard to understand why directional lights position doesn't make >>> sense >>> > . I mean , take 3d modelling program ,or UDK or Unity(ok that is not >>> the >>> > same in terms of technology ) , but the light should have emission >>> source >>> > and the soruce should have a position in 3d space ? . and the source >>> > position of DirectionalLight3D is in the center of the scene, So if my >>> > object is not offset from the center ,there is a problem , the object >>> > doesn't receive the light at all . And .direction doesn't help in this >>> case, >>> > I was trying to tweak it too without much success . Eventually used >>> > PointLight3d. >>> > >>> > >>> > >>> > On Mon, Jun 7, 2010 at 10:35 AM, richardolsson <[email protected]> >>> wrote: >>> > > The direction property is the way to go. As of 3.5, directional >>> lights >>> > > don't have positions, which never made sense anyway since dir lights >>> > > are orthographic in a way, and not to be considered as point in space >>> > > -- they are infinitely far away. >>> > >>> > > If you cannot get direction to work like below, make sure you are >>> > > using materials that support dir lights! >>> > >>> > > var light : DirectionalLight3D = new DirectionalLight3D; >>> > > light.direction = new Number3D(0, -1, 0); // Downward >>> > >>> > > Cheers >>> > > /R >>> > >>> > > On Jun 5, 10:15 pm, fab4ce <[email protected]> wrote: >>> > > > Hi Fabrice, >>> > >>> > > > PointLight3D has a position property, but DirectionalLight3D >>> doesn´t >>> > > > have it. >>> > >>> > > > On 5 Jun., 19:53, Fabrice3D <[email protected]> wrote: >>> > >>> > > > > there is a position property >>> > >>> > > > > Fabrice >>> > > > > On Jun 5, 2010, at 2:08 AM, fab4ce wrote: >>> > >>> > > > > > Hi all, >>> > > > > > after updating to the new version 3.5 i had to change my >>> directional >>> > > > > > light from view.scene.addChild(light) to >>> view.scene.addLight(light); >>> > > > > > How can change my code for positioning the light in the scene? >>> I was >>> > > > > > using the .x and .y and .z properties of the light object. >>> > >>> > -- >>> > Michael Ivanov ,Programmer >>> > Neurotech Solutions Ltd. >>> > Flex|Air >>> |3D|Unity|www.neurotechresearch.comhttp://blog.alladvanced.nethttp:// >>> www.meetup.com/GO3D-Games-Opensource-3D/ >>> > >>> Tel:054-4962254begin_of_the_skype_highlighting 054-4962254 >>> end_of_the_skype_highlighting >>> > [email protected] >>> > [email protected] >> >> >> >> >> -- >> Michael Ivanov ,Programmer >> Neurotech Solutions Ltd. >> Flex|Air |3D|Unity| >> www.neurotechresearch.com >> http://blog.alladvanced.net >> http://www.meetup.com/GO3D-Games-Opensource-3D/ >> Tel:054-4962254 >> [email protected] >> [email protected] >> >> > > > -- > http://www.derschmale.com > -- Michael Ivanov ,Programmer Neurotech Solutions Ltd. Flex|Air |3D|Unity| www.neurotechresearch.com http://blog.alladvanced.net http://www.meetup.com/GO3D-Games-Opensource-3D/ Tel:054-4962254 [email protected] [email protected]
