Away3D Forum Setting ambient value on light causes flicker at startup

Ontheronix, Jr. Member
Posted: 02 September 2012 12:36 PM Total Posts: 37

The flicker appears on startup, and affects only the objects in my View3D.
It seems to be the lighting that changes for a splitsecond, it seems to initialize with the default light.ambient setting, and then changes to my brighter ‘0.9’.

Commenting


light.ambient = 0.9;

resolves the issue.

Example: (horizontal plane) http://mark.me/test/ (Refresh page to repeat if you didn’t see it)
(I use the latest version from Git)

Code:

package  {
 
 import flash.display.MovieClip;
 import away3d.entities.Mesh;
 import away3d.containers.View3D;
 import away3d.primitives.PlaneGeometry;
 import away3d.materials.lightpickers.StaticLightPicker;
 import away3d.lights.DirectionalLight;
 import away3d.materials.methods.FilteredShadowMapMethod;
 import flash.geom.Vector3D;
 import flash.events.Event;
 import away3d.materials.ColorMaterial;
 import away3d.debug.AwayStats;
 
 public class Main extends MovieClip {
  
  var view:View3D;
  public function Main() {
    view = new View3D();
    var light:DirectionalLight = new DirectionalLight();   
    light.ambient = 0.9;
    
    
    view.scene.addChild(light);
    view.camera.position=new Vector3D(0,50,-400);
    view.backgroundColor = 0xFFFFFF;
    view.addEventListener(Event.ENTER_FRAME,entr);
    
    
      var _lightPicker:StaticLightPicker = new StaticLightPicker([light]);
    
    var _groundMaterial:ColorMaterial = new ColorMaterial(0xEEEEEE);
    _groundMaterial.shadowMethod = new FilteredShadowMapMethod(light);
    _groundMaterial.lightPicker = _lightPicker;
    
    
    
    var msh:Mesh = new Mesh(new PlaneGeometry(400, 400),_groundMaterial);
    view.scene.addChild(msh);
    addChild(view);
    
    var stats:AwayStats = new AwayStats(view);
    stage.addChild(stats);
  }
  function entr (e:Event) {
     view.render();  
  }
 }
 
} 

loth, Sr. Member
Posted: 03 September 2012 02:54 PM Total Posts: 236 [ # 1 ]

Try with that (add more time if don’t work)

import flash.events.TimerEvent;

        public function Main() {
            if (stage)
                setTimeout(init, 0);
            else
                addEventListener(Event.ADDED_TO_STAGE, init, false, 0, true);
        }

        protected function init(e:Event=null):void {
            if (e) removeEventListener(Event.ADDED_TO_STAGE, init);
       // your code here
} 

Ontheronix, Jr. Member
Posted: 09 September 2012 10:41 AM Total Posts: 37 [ # 2 ]

This doesn’t work, even if I set the interval to 1000. It just takes longer for the view to appear, but when it appears, the short flicker is there again.

Ontheronix, Jr. Member
Posted: 09 September 2012 01:14 PM Total Posts: 37 [ # 3 ]

I’d like to note that adding:

light.direction = new Vector3D(0, -1, 0);
 light.castsShadows = true; 

does not make any difference.

Not setting a lightpicker to the material bypasses the problem. But hereby there is no more possibility to render shadows if I’m correct?

Setting ambient value on light causes flicker at startup Software: Away3D 4.x

Ontheronix, Jr. Member Posted: 02 September 2012 12:36 PM Total Posts: 37 The flicker appears on startup, and affects only the objects in my View3D. It seems to be the lighting that changes for a splitsecond, it seems to initialize with the default light.ambient setting, and then changes to my brighter ‘0.9’. Commenting `light.ambient = 0.9;` resolves the issue. Example: (horizontal plane) http://mark.me/test/ (Refresh page to repeat if you didn’t see it) (I use the latest version from Git) Code: package { import flash.display.MovieClip; import away3d.entities.Mesh; import away3d.containers.View3D; import away3d.primitives.PlaneGeometry; import away3d.materials.lightpickers.StaticLightPicker; import away3d.lights.DirectionalLight; import away3d.materials.methods.FilteredShadowMapMethod; import flash.geom.Vector3D; import flash.events.Event; import away3d.materials.ColorMaterial; import away3d.debug.AwayStats; public class Main extends MovieClip { var view:View3D; public function Main() { view = new View3D(); var light:DirectionalLight = new DirectionalLight(); light.ambient = 0.9; view.scene.addChild(light); view.camera.position=new Vector3D(0,50,-400); view.backgroundColor = 0xFFFFFF; view.addEventListener(Event.ENTER_FRAME,entr); var _lightPicker:StaticLightPicker = new StaticLightPicker([light]); var _groundMaterial:ColorMaterial = new ColorMaterial(0xEEEEEE); _groundMaterial.shadowMethod = new FilteredShadowMapMethod(light); _groundMaterial.lightPicker = _lightPicker; var msh:Mesh = new Mesh(new PlaneGeometry(400, 400),_groundMaterial); view.scene.addChild(msh); addChild(view); var stats:AwayStats = new AwayStats(view); stage.addChild(stats); } function entr (e:Event) { view.render(); } } }
loth, Sr. Member Posted: 03 September 2012 02:54 PM Total Posts: 236 [ # 1 ] Try with that (add more time if don’t work) `import flash.events.TimerEvent; public function Main() { if (stage) setTimeout(init, 0); else addEventListener(Event.ADDED_TO_STAGE, init, false, 0, true); } protected function init(e:Event=null):void { if (e) removeEventListener(Event.ADDED_TO_STAGE, init); // your code here }`
Ontheronix, Jr. Member Posted: 09 September 2012 10:41 AM Total Posts: 37 [ # 2 ] This doesn’t work, even if I set the interval to 1000. It just takes longer for the view to appear, but when it appears, the short flicker is there again.
Ontheronix, Jr. Member Posted: 09 September 2012 01:14 PM Total Posts: 37 [ # 3 ] I’d like to note that adding: `light.direction = new Vector3D(0, -1, 0); light.castsShadows = true;` does not make any difference. Not setting a lightpicker to the material bypasses the problem. But hereby there is no more possibility to render shadows if I’m correct?

Setting ambient value on light causes flicker at startup

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