def calculateLayer(input):
# Typically the hatch angle is globally rotated per layer by usually 66.7 degrees per layer
d = input[0]
zid = input[1]
layerThickness = d['layerThickness']
solidPart = d['part']
# Create a StripeHatcher object for performing any hatching operations
myHatcher = hatching.Hatcher()
# Set the base hatching parameters which are generated within Hatcher
layerAngleOffset = 66.7
myHatcher.hatchAngle = 10 + zid * 66.7
myHatcher.volumeOffsetHatch = 0.08
myHatcher.spotCompensation = 0.06
myHatcher.numInnerContours = 2
myHatcher.numOuterContours = 1
myHatcher.hatchSortMethod = hatching.AlternateSort()
#myHatcher.hatchAngle += 10
# Slice the boundary
geomSlice = solidPart.getVectorSlice(zid * layerThickness)
# Hatch the boundary using myHatcher
layer = myHatcher.hatch(geomSlice)
# The layer height is set in integer increment of microns to ensure no rounding error during manufacturing
layer.z = int(zid * layerThickness * 1000)
layer.layerId = int(zid)
return layer
contours = hatching.simplifyBoundaries(contours, 0.2)
""" Scale the coordinates back to the original coordinate systems"""
contours = [contour * res for contour in contours]
""" We have to scale the coordinates back to the original resolution"""
# Create a BasicIslandHatcher object for performing any hatching operations (
myHatcher = hatching.BasicIslandHatcher()
myHatcher.stripeWidth = 5.0
# Set the base hatching parameters which are generated within Hatcher
myHatcher.hatchAngle = 10 # [°] The angle used for the islands
myHatcher.volumeOffsetHatch = 0.08 # [mm] Offset between internal and external boundary
myHatcher.spotCompensation = 0.06 # [mm] Additional offset to account for laser spot size
myHatcher.numInnerContours = 2
myHatcher.numOuterContours = 1
myHatcher.hatchSortMethod = hatching.AlternateSort()
"""
Perform the slicing. Return coords paths should be set so they are formatted internally.
This is internally performed using Trimesh to obtain a closed set of polygons.
The boundaries of the slice can be automatically simplified if desired.
"""
print('Hatching started')
layer = myHatcher.hatch(contours)
print('Hatching finished')
"""
Note the hatches are ordered sequentially across the stripe. Additional sorting may be required to ensure that the
the scan vectors are processed generally in one-direction from left to right.
The stripes scan strategy will tend to provide the correct order per isolated region.
"""
"""
Plot the layer geometries using matplotlib
