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This is more like forum question, but - since it's down - here goes:

            } else {
                _texture = null;
                throw new Error("Cannot upload without data");
            }

Why does it have to do that? I could understand throw, but "= null" part is mysterious 😕

The detection does not work on Android & Apple devices.

See thread:
http://forum.alternativaplatform.com/posts/list/10004.page

Problem seems to be in view -> calculateSurfacesDepths where "red" and "green" are always 0.

Now is AltrntivaPltfrm, but actual is Alternativa3Den

How to Extended Mode

updateBoundBox() in Object3D is completely empty

Object literals are faster than the new operator

Strings, Numbers (including int and uint), and Boolean objects are usually instantiated using literal notation (var str:String = “text”). Objects and Arrays are often instantiated using the “new” operator – this is seldom necessary (only in the case of a fixed-length Array), and is slower.

var o:Object = {}; is faster than var o:Object = new Object();

and

var a:Array = []; is faster than var a:Array = new Array();

Оказалось, что ExporterA3D не умеет экспортировать обычный StandartMaterial в котором находится BitmapTextureResource.

private function exportMap(source:TextureResource, channel:int, dest:A3D2):int {
            if (source == null) return -1;
            var result:A3D2Map = mapsMap[source];
            if (result != null) return result.id;
            if (source is ExternalTextureResource) {
                var resource:ExternalTextureResource = source as ExternalTextureResource;
                result = new A3D2Map(channel, mapID, exportImage(resource, dest));
                if (dest.maps == null) dest.maps = new Vector.<A3D2Map>();
                dest.maps[mapID] = result;
                mapsMap[source] = result;

                return mapID++;
            }
            return -1;
        }

Почему только if (source is ExternalTextureResource) { ???????? Невероятно!
Я бы сделал пуллреквест только у вас там бинарные библиотеки.

Could we please have a wiki to post tutorials and how-tos?

http://forum.alternativaplatform.com/posts/downloadAttach/2584.page

When we use Sprite3D we don't want to scale up the bitmapdata if it is not power of two. So, we need to have something like Image in starling.

I made changes (hardcode) to reach such behavior.
Here are some changes in BitmapTextureResource.as:

            if (resizeForGPU) {
                var wLog2Num:Number = Math.log(data.width)/Math.LN2;
                var hLog2Num:Number = Math.log(data.height)/Math.LN2;
                var wLog2:int = Math.ceil(wLog2Num);
                var hLog2:int = Math.ceil(hLog2Num);
                if (wLog2 != wLog2Num || hLog2 != hLog2Num || wLog2 > 11 || hLog2 > 11) {
                    // Resize bitmap
                    wLog2 = (wLog2 > 11) ? 11 : wLog2;
                    hLog2 = (hLog2 > 11) ? 11 : hLog2;
                    source = new BitmapData(1 << wLog2, 1 << hLog2, data.transparent, 0x0);
                    source.copyPixels(data, data.rect, new Point(0, 0));
                    scaleUV = new Rectangle(0, 0, data.width / source.width, data.height / source.height);
                }
            }

So, we copy data without resizing. source.copyPixels(data, data.rect, new Point(0, 0)); Then save scaleUV to set them in Sprite3D.as:

            geometry.setAttributeValues(VertexAttributes.POSITION, Vector.<Number>([0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0]));
            geometry.setAttributeValues(VertexAttributes.NORMAL, Vector.<Number>([0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[0], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[1], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[2], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[3], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[4], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[5], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[6], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));
            geometry.setAttributeValues(VertexAttributes.TEXCOORDS[7], Vector.<Number>([0, 0, 0, scaleV, scaleU, scaleV, scaleU, 0]));

I don't know how to integrate it correct into the main code. So it would be great to see similar changes in the next releases.

Thanks.

See discussion at the end of pull request #26

var point:Sprite3D = new Sprite3D(16, 16, pMaterial);
point.mouseEnabled = true;
point.mouseChildren = true;
point.useHandCursor = true;
point.alwaysOnTop = true;

Sprite is covered by another mesh. Mouse events does not work.

https://github.com/AlternativaPlatform/Alternativa3DUtils 404 хотя стоит ссылка из readme

https://github.com/AlternativaPlatform/Alternativa3D/blob/master/src/alternativa/engine3d/loaders/collada/DaeEffect.as#L112

according to http://forum.alternativaplatform.com/index.php?showtopic=4526&#entry25329 it prevents loading normal maps in blender dae-s

My initial guess was that lights array is not sorted according to light type and so program cache is ineffective. But then all my lights are omnidirectional, so it should not matter.

Everything works fine on Windows. However, when I take my code to Android, the Z ordering of objects is all wrong. The following code produces these outputs:

Windows 7 64 Home Premium, Adobe AIR 3.3:http://i49.tinypic.com/20jo2kg.png - Right

Android 3.2.1 Le Pan II, Adobe AIR 3.3: http://i50.tinypic.com/1z1sgtc.png - Wrong

(Flex 4.6 SDK, AIR 3.3 SDK, Alternativa3D 8.27, FlashDevelop 4.0.4 RTM with default "AIR Mobile AS3 App" profile)

package 
{
    import alternativa.engine3d.core.Camera3D;
    import alternativa.engine3d.core.Object3D;
    import alternativa.engine3d.core.View;
    import alternativa.engine3d.lights.OmniLight;
    import alternativa.engine3d.materials.StandardMaterial;
    import alternativa.engine3d.primitives.Box;
    import alternativa.engine3d.resources.BitmapTextureResource;
    import flash.display.BitmapData;
    import flash.display.Stage3D;
    import flash.events.Event;
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;

    [SWF(width = "1024", height = "720")]

    public class Main extends Sprite 
    {
        public var
            stage3D     :Stage3D = stage.stage3Ds[0],
            scene       :Object3D = new Object3D(),
            camera      :Camera3D;

        public function Main():void 
        {
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.align = StageAlign.TOP_LEFT;

            stage3D = stage.stage3Ds[0];
            stage3D.addEventListener(Event.CONTEXT3D_CREATE, onContext3dCreate);
            stage3D.requestContext3D();
        }

        private function onContext3dCreate(event:Event):void
        {
            camera = new Camera3D(1, 10000);
            camera.view = new View(stage.stageWidth, stage.stageHeight);
            camera.view.hideLogo();
            camera.rotationX = -.5;
            camera.rotationY = -1;
            scene.addChild(camera);
            addChild(camera.view);

            var light:OmniLight = new OmniLight(0xffffff, 5000, 10000);
            scene.addChild(light);

            var normalMap:BitmapTextureResource = new BitmapTextureResource(new BitmapData(1, 1, false, 0x7f7fff));
            normalMap.upload(stage3D.context3D);

            var texture:BitmapTextureResource = new BitmapTextureResource(new BitmapData(1, 1, false, 0xff0000));
            texture.upload(stage3D.context3D);
            var material:StandardMaterial = new StandardMaterial(texture, normalMap);

            var boxSize:uint = 50;
            var boxCount:int = 10;
            for (var x:int = 0; x < boxCount; x++)
                for (var z:int = 0; z < boxCount; z++)
                {
                    var box:Box = new Box(boxSize - 5, 10, boxSize - 5);
                    box.geometry.upload(stage3D.context3D);
                    box.getSurface(0).material = material;
                    box.x = (boxSize * x) - (boxCount * boxSize);
                    box.y = 50;
                    box.z = boxSize * z;
                    scene.addChild(box);
                }

            camera.render(stage3D);
        }
    }
}

народ говорит спрайты3д не кулятся http://forum.alternativaplatform.com/posts/list/0/10238.page

См скрин тут явно какое-то говно.

Only on Android and IOS if you have for example a box on a plane and click on the box, the mouseevent3D will always target the plane.

So the issue is concerning MouseEvent3D with overlapping object.

I have two comments about the lookAt methods (in DirectionalLight, SpotLight, Camera3D, and possibly elsewhere):

1. I think this method should be implemented in Object3D, not in multiple subclasses.
2. When deltaY is non-zero, the lookAt method produces incorrect results for me. It points down when it should point up and vice versa. If you aren't able to trivially reproduce this, let me know and I'll investigate the cause further.

Thanks!

Hi

When I try to publish my 3ds file with textures in http://a3dplayer.com/ Iget error

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at alternativa.engine3d.loaders::ExporterA3D/exportGeometry()[C:\Develop\platform\clients\fp11\libraries\Alternativa3D\trunk\target\checkout\src\alternativa\engine3d\loaders\ExporterA3D.as:523]
at alternativa.engine3d.loaders::ExporterA3D/exportMesh()[C:\Develop\platform\clients\fp11\libraries\Alternativa3D\trunk\target\checkout\src\alternativa\engine3d\loaders\ExporterA3D.as:370]
at alternativa.engine3d.loaders::ExporterA3D/exportHierarchy()[C:\Develop\platform\clients\fp11\libraries\Alternativa3D\trunk\target\checkout\src\alternativa\engine3d\loaders\ExporterA3D.as:256]
at alternativa.engine3d.loaders::ExporterA3D/exportHierarchy()[C:\Develop\platform\clients\fp11\libraries\Alternativa3D\trunk\target\checkout\src\alternativa\engine3d\loaders\ExporterA3D.as:267]
at alternativa.engine3d.loaders::ExporterA3D/export()[C:\Develop\platform\clients\fp11\libraries\Alternativa3D\trunk\target\checkout\src\alternativa\engine3d\loaders\ExporterA3D.as:171]
at projects.editor.clients.fp11.Alternativa3DEditor.export.exportSWF.progressPhase::ExportProgressPhase/prepareModelSource()
at projects.editor.clients.fp11.Alternativa3DEditor.export.exportSWF.progressPhase::ExportProgressPhase()
at projects.editor.clients.fp11.Alternativa3DEditor.app::ExportController/exportToSWF()
at projects.editor.clients.fp11.Alternativa3DEditor.app.views.topPanel::TopPanel/__exportSWF_click()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at alternativa.gui.mouse::MouseManager/onClick()[C:\work\fb3\AlternativaGUI\target\checkout\src\alternativa\gui\mouse\MouseManager.as:990]
at alternativa.gui.mouse::MouseManager/onMouseUp()[C:\work\fb3\AlternativaGUI\target\checkout\src\alternativa\gui\mouse\MouseManager.as:1128]