problem with level of detail of a surface

pfb shared this question 1 month ago
Answered

Hi,

I have a construction with a surface plot and a simple animation.

When the level of detail of the surface is set for "speed" the animation does what I expect.

However the details of the surface are (expectedly) not very satisfactory. The gridlines are a bit wonky and they flicker as the animation proceeds.

When I set the LoD to "quality" the surface is much better, but the animation apparently won't start. The 3D view is frozen, although all the "animated" parameters vary as they should (this can be seen from the Algebra view).

Also, the app often hangs, and I have to kill it.

I'm working with GGB 6 on a macbook pro, with HighSierra.

I updated GGB to the latest version (603) but this did not help at all.

The same problem appears in the online version of the construction.

Is this a bug or am I doing something really wrong? I would not say the latter, because with a fast LoD the construction does what I expect, except for the wonky details.

Is there a solution?

Thanks a lot

Francesco

Comments (11)

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Seems OK with quality here - try in Chrome eg https://www.geogebra.org/m/xnnxpewv

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Hi Michael,

thanks a lot again.

The surface looks good allright, but I see the 3D view only. The controls I put in the Graphics view have disappeared (the window is not tall enough, or you removed them).

Also, I am not able to change the view by using the mouse (but maybe you prevented this from the "activity page").

I tried opening my app in Safari. A few weird things happen:

1) the quality of the surface is much better, even if it is still on "speed";

2) I am able to control the view with the mouse

3) I cannot see the controls (but they seem to be there: it's the window that is too small)

4) the construction won't load when I try to edit the activity in safari.

As to your copy, I still do not see the controls for the animation, nor I am able to change the view using the mouse.


What about you? Can you use the controls in (your copy of) my construction? The "planet" should orbit around the "Sun". At some point the Sun and the surface disappear. The latter disappears gradually, starting from its center. Then the planet escapes along the tangent to its initial orbit.

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3) I cannot see the controls (but they seem to be there: it's the window that is too small) 


edit applet then


/idhjVvtkCnyaCHYlICAg8Gr+f+LdN4F6lHqLAAAAAElFTkSuQmCC

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Hi mathmagic,

I'm aware of those parameters. The problems are

1) I cannot see the controls in Michael's construction, and I have no access to his page and relevant parameters.

2) I can see those controls in my page when I open it in chrome. If I open it in Safari, the windows needs to be enlarged. However, when try to edit it, and access the parameters you sho, the construction won't load (and neither its parameters).


Thanks anyway

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Did you try Chrome?

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Hi

yes, I did.

By default I use Chrome. I tried your last copy of my construction (https://www.geogebra.org/m/xnnxpewv) on Chrome.

The quality of the surface is high, and I see the buttons. However the animations attached to the buttons do not work.

The planet moves a little bit, then everything freezes. After pressing the buttons I am not even able to change the point of view by dragging the mouse. If I press the double curved arrows and reset the construction, I can at least change the point of view.

This is similar to what happens with my local copy of GeoGebra. In that case I can see that the animation parameters (e.g. the "time") in the Algebra view are changing, but the 3D view does not update accordingly. Unfortunately, I am unable to reset the construction in my local copy of GeoGebra. It ends up hanging, and I have to kill it.

I also tried to open your construction in Safari. It's pretty much the same as Chrome. The animation won't update, and I'm not able to change the point of view.

Maybe it's the browser.

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Thanks, got it! We'll try and fix that bug soon :)

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Glad I've been of help, especially after all the help I have received (and I'm receiving).

So, thank you (again) :D

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Fixed for v614

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Cool! I'll try that asap!

Thanks again for all your work and help

Francesco

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