StripeHatcher

class pyslm.hatching.StripeHatcher

Bases: Hatcher

The Stripe Hatcher extends the behavior of the standard Hatcher for generating a ‘stripe’ scan strategy, which generates a set of an infill of hatches of a fixed width (stripeWidth) to cover a region. This a common scan strategy adopted by users of EOS systems. This has the effect of limiting the max length of the scan vectors across a region in order to mitigate the effects of residual stress, but is far more convenient to implement and process compared to the island scan strategy.

This class simply overrides the generateHatching() method in order to implement this.

Attributes Summary

stripeOffset	The stripe offset is the relative distance (hatch spacing) to move the scan vectors between adjacent stripes
stripeOverlap	The length of overlap between adjacent stripes
stripeWidth	The stripe width

Methods Summary

generateHatching(paths, hatchSpacing[, ...])

Generates un-clipped hatches which is guaranteed to cover the entire polygon region based on the maximum extent of the polygon bounding box

Attributes Documentation

stripeOffset

The stripe offset is the relative distance (hatch spacing) to move the scan vectors between adjacent stripes

stripeOverlap

The length of overlap between adjacent stripes

stripeWidth

The stripe width

Methods Documentation

generateHatching(paths, hatchSpacing, hatchAngle=90.0)

Generates un-clipped hatches which is guaranteed to cover the entire polygon region based on the maximum extent of the polygon bounding box

Parameters:

• paths (List[ndarray]) – The polygon boundaries

• hatchSpacing (float) – The hatch spacing to use for scan vectors

• hatchAngle (float) – The hatch angle (degrees) to rotate the scan vectors

Return type:

ndarray

Returns:

List of unclipped scan vectors