topic Re: Subgroup operation performance in GDL

Subgroup operation performance

jc4d — Mon, 24 Oct 2022 07:37:29 GMT

Hello,

I have to create a "box" with control over the top most face angle, for it I'm using a SPRISM_ command. Now, the thing is I would need to have a thickness on the side faces and not having the top and bottom faces.

To get the result I'm going after, I'm using a subgroup subtraction where I cut a box from the SPRISM_, not sure if this is the wisest way on solving this problem without affecting the performance or there is another solution.

GROUP "Out" GOSUB 10 ENDGROUP GROUP "In" GOSUB 20 ENDGROUP result_1 = SUBGROUP("In", "Out") PLACEGROUP result_1 KILLGROUP "Out" KILLGROUP "In" END 10: PRISM_ 4,15, 0.1,0.1,15, 0.1,B-0.1,15, A-0.1,B-0.1,15, A-0.1,0.1,15 RETURN 20: SPRISM_ mat ,mat, mat, 4, 0, B, 0, 0, 1, -15.0, !xb, yb, xe, ye, h, angle, 0,0,15, 0,B,15, A,B,15, A,0,15 RETURN

Juan

Re: Subgroup operation performance

MetalFingerz — Mon, 24 Oct 2022 08:20:08 GMT

Hello @jc4d ,

SPRISM_ like other PRISMs accepts holes directly in the command.

For example :

SPRISM_ 2, 2, 2, 10, -1, -1, 1, -1, 1.5, 15, -1, -1, 15, 1, -1, 15, 1, 1, 15, -1, 1, 15, -1, -1, -1, ! contour -0.8, -0.8, 15, 0.8, -0.8, 15, 0.8, 0.8, 15, -0.8, 0.8, 15, -0.8, -0.8, -1 ! hole

Would give this :

I think it's a more efficient than having to do solid operations.

Re: Subgroup operation performance

jc4d — Mon, 24 Oct 2022 08:45:43 GMT

Thank you @MetalFingerz . I'm glad to know that it is possible to create holes directly in the SPRISM_ as well.👍