from math import (
floor,
pi,
)
from mathutils import Euler, Vector
from ..chunk_builder import CamPathChunkBuilder
from ..utilities.chunk_utils import chunks_to_mesh, sample_chunks_n_axis
from ..utilities.operation_utils import get_layers
from ..utilities.simple_utils import progress
[docs]
async def parallel_four_axis(o):
"""Generate path patterns for a specified operation along a rotary axis.
This function constructs a series of path chunks based on the provided
operation's parameters, including the rotary axis, strategy, and
dimensions. It calculates the necessary angles and positions for the
cutter based on the specified strategy (PARALLELR, PARALLEL)
and generates the corresponding path chunks for machining operations.
Args:
operation (object): An object containing parameters for the machining operation,
including min and max coordinates, rotary axis configuration,
distance settings, and movement strategy.
Returns:
list: A list of path chunks generated for the specified operation.
"""
progress("~ Building Path Pattern ~")
minx, miny, minz, maxx, maxy, maxz = o.min.x, o.min.y, o.min.z, o.max.x, o.max.y, o.max.z
pathchunks = []
zlevel = 1 # minz#this should do layers...
# set axes for various options, Z option is obvious nonsense now.
if o.rotary_axis_1 == "X":
a1 = 0
a2 = 1
a3 = 2
if o.rotary_axis_1 == "Y":
a1 = 1
a2 = 0
a3 = 2
if o.rotary_axis_1 == "Z":
a1 = 2
a2 = 0
a3 = 1
o.max.z = o.max_z
# set radius for all types of operation
radius = max(o.max.z, 0.0001)
radiusend = o.min.z
mradius = max(radius, radiusend)
circlesteps = (mradius * pi * 2) / o.distance_along_paths
circlesteps = max(4, circlesteps)
anglestep = 2 * pi / circlesteps
# generalized rotation
e = Euler((0, 0, 0))
e[a1] = anglestep
# generalized length of the operation
maxl = o.max[a1]
minl = o.min[a1]
steps = (maxl - minl) / o.distance_between_paths
# set starting positions for cutter e.t.c.
cutterstart = Vector((0, 0, 0))
cutterend = Vector((0, 0, 0)) # end point for casting
if o.strategy_4_axis == "PARALLELR":
for a in range(0, floor(steps) + 1):
chunk = CamPathChunkBuilder([])
cutterstart[a1] = o.min[a1] + a * o.distance_between_paths
cutterend[a1] = cutterstart[a1]
cutterstart[a2] = 0 # radius
cutterend[a2] = 0 # radiusend
cutterstart[a3] = radius
cutterend[a3] = radiusend
for b in range(0, floor(circlesteps) + 1):
chunk.startpoints.append(cutterstart.to_tuple())
chunk.endpoints.append(cutterend.to_tuple())
rot = [0, 0, 0]
rot[a1] = a * 2 * pi + b * anglestep
chunk.rotations.append(rot)
cutterstart.rotate(e)
cutterend.rotate(e)
chunk.depth = radiusend - radius
# last point = first
chunk.startpoints.append(chunk.startpoints[0])
chunk.endpoints.append(chunk.endpoints[0])
chunk.rotations.append(chunk.rotations[0])
pathchunks.append(chunk.to_chunk())
if o.strategy_4_axis == "PARALLEL":
circlesteps = (mradius * pi * 2) / o.distance_between_paths
steps = (maxl - minl) / o.distance_along_paths
anglestep = 2 * pi / circlesteps
# generalized rotation
e = Euler((0, 0, 0))
e[a1] = anglestep
reverse = False
for b in range(0, floor(circlesteps) + 1):
chunk = CamPathChunkBuilder([])
cutterstart[a2] = 0
cutterstart[a3] = radius
cutterend[a2] = 0
cutterend[a3] = radiusend
e[a1] = anglestep * b
cutterstart.rotate(e)
cutterend.rotate(e)
for a in range(0, floor(steps) + 1):
cutterstart[a1] = o.min[a1] + a * o.distance_along_paths
cutterend[a1] = cutterstart[a1]
chunk.startpoints.append(cutterstart.to_tuple())
chunk.endpoints.append(cutterend.to_tuple())
rot = [0, 0, 0]
rot[a1] = b * anglestep
chunk.rotations.append(rot)
chunk = chunk.to_chunk()
chunk.depth = radiusend - radius
pathchunks.append(chunk)
if (
(reverse and o.movement.type == "MEANDER")
or (o.movement.type == "CONVENTIONAL" and o.movement.spindle_rotation == "CW")
or (o.movement.type == "CLIMB" and o.movement.spindle_rotation == "CCW")
):
chunk.reverse()
reverse = not reverse
path_samples = pathchunks
depth = path_samples[0].depth
chunks = []
layers = get_layers(o, 0, depth)
chunks.extend(await sample_chunks_n_axis(o, path_samples, layers))
chunks_to_mesh(chunks, o)
