why not use 1*1 bitmapdata?

[lizhi525]

why not use 1*1 bitmapdata?

[JMLX42]

If we use a 1x1 bitmap then we will only get the upper left pixel.
And if that's not where the mouse is then it's not really useful is it? :)

[JMLX42]

If you have further questions, please post on Answers.

[lizhi525]

you can change the camera.so you can use 1*1 bitmap.

the are2d have do that.http://animation-render-engine.googlecode.com/svn/trunk/swfs/pick.html

[lizhi525]

view.camera.projectMatrix.copyRawDataTo(rawdata);
            rawdata[8] = -view.mouseX / view.width3d * 2 ;
            rawdata[9] =view.mouseY / view.height3d * 2 ;
            cameraM.copyRawDataFrom(rawdata);
            
            camera.worldToScreen.copyFrom(view.camera._matrix3D);
            camera.worldToScreen.invert();
            camera.worldToScreen.append(cameraM);

[JMLX42]

Nice finding :) We've been looking for this kind of trick!
I re-opened the issue and I'll try to implement this properly: changing the camera projection is not the best way to go I think.

I'd rather define a special data provider for this kind of stuff and add it to the scene data bindings. The picking shader will then be able to fetch this custom projection.

Anyway I got some debug to do on the picking today so I'll try to push this as well.

Does it give any performance boost? I guess it does but the biggest overhead is the VRAM -> RAM copy of the entire framebuffer that happens anyway...

[lizhi525]

yes,use 1*1 bitmap.can do that enterframe,like mouseover ,mouseout

[JMLX42]

fixed in a9b0275