Create a hatch for Hardcore Fill

[3dwannab]

Hardcore fill is generally compacted in 150mm layers.

 

I wanted to create a hatch to represent this with diagonal lines in a cross pattern along with a horizontal line to represent the layers.

 

I have the hatch working but I was curious to learn if that value for delta-y is 0.35355339?

 

I would of thought it would be one. Or is there some mathematics involved here?

 

RWS_Hardcore_Fill.pat

[eldon]

10 hours ago, 3dwannab said:

................

 

I would of thought it would be one. Or is there some mathematics involved here?

 

 

The mathematics are (Square root of 2) divided by 4.

 

It is the perpendicular distance between the 45 degree lines, based on the horizontal lines being 1 unit apart.

 

Delta-y is always measured perpendicular to the line being defined.

 

Perhaps my diagram of the pattern data may help. The delta-y is labelled "e"

 

 

[eldon]

If you had wanted the delta-y of the second two lines to be 1, then the delta-y of the 0 angle line would have to be (4 divided by the square root of 2) instead of 1.

[3dwannab]

0.35355339 = My eyeball attempt

0.35355339059 = The actual result of (Square root of 2) divided by 4.

 

Looks like I don't need glasses just yet 

 

Thanks for the diagram, even though I feel a bit of a headache coming on since I looked at it. Just wish I paid more attention at Maths! Although that diagram should be up on Autodesks help page for hatches.

 

Thanks very much! Didn't think I'd get an answer on this one.