The issue of incomplete images when slicing with the squares() function

[GY Lynn]

I am trying to simulate a transverse-jet and aim to get a video of contour plots on the X-Y cross-section using the squares() function. As shown in the picture, I obtained normal results at maxlevel=9 (left), yet information loss occurred at maxlevel=10 (right). What could be the reason for this? 

         

Below is the code for the video generation part:

event movie (t += 0.00001)

{

  scalar pid[];

  foreach()

    pid[] = fmod(pid()*(npe() + 37), npe());

view (camera = "front",fov = 20, tx = -0.463, ty=-0.5,  width = 1920, height = 1920);

clear(); 

    squares ("f", map = gray, linear = true,  n = {0,0,1}, alpha = 0);

    save ("f_gray.png");   

    save ("f_gray.mp4");

}

Any insights or suggestions would be greatly appreciated ! 

Best regards,

Lynn

[Stephane Popinet]

Hi,

> What could be the reason for this?

Try alpha = 1e-5

Stephane

[GY Lynn]

Thank you very much, this modification worked!