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PATH: improved stepdown calculation and test

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sliptonic
2016-12-03 14:37:21 -06:00
parent 66210c7888
commit 9507fa6cae
3 changed files with 210 additions and 20 deletions
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63
src/Mod/Path/PathScripts/PathUtils.py
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@@ -26,7 +26,9 @@ import FreeCAD
import FreeCADGui
import Part
import math
# import Draft
# import Path
# import TechDraw
from DraftGeomUtils import geomType
# from DraftGeomUtils import findWires
# import DraftVecUtils
@@ -103,7 +105,6 @@ def fmt(val): return format(val, '.4f')
# def silhouette(obj):
# from FreeCAD import Vector
# s = getProjected(obj.Shape, Vector(0,0,1))
# print s
# w = TechDraw.findOuterWire(s.Edges)
# return w
@@ -808,34 +809,58 @@ def rampPlunge(edge, rampangle, destZ, startZ):
class depth_params:
'''calculates the intermediate depth values for various operations given the starting, ending, and stepdown parameters'''
'''calculates the intermediate depth values for various operations given the starting, ending, and stepdown parameters
(self, clearance_height, rapid_safety_space, start_depth, step_down, z_finish_depth, final_depth, [user_depths=None])
Note: if user_depths are supplied, only user_depths will be used.
clearance_height: Height to clear all obstacles
rapid_safety_space: Height to rapid between locations
start_depth: Top of Stock
step_down: Distance to step down between passes (always positive)
z_finish_step: Maximum amount of material to remove on the final pass
final_depth: Lowest point of the cutting operation
user_depths: List of specified depths
'''
def __init__(self, clearance_height, rapid_safety_space, start_depth, step_down, z_finish_step, final_depth, user_depths=None):
'''self, clearance_height, rapid_safety_space, start_depth, step_down, z_finish_depth, final_depth, [user_depths=None]'''
if z_finish_step > step_down:
raise ValueError('z_finish_step must be less than step_down')
def __init__(self, clearance_height, rapid_safety_space, start_depth, step_down, z_finish_depth, final_depth, user_depths=None):
self.clearance_height = clearance_height
self.rapid_safety_space = math.fabs(rapid_safety_space)
self.start_depth = start_depth
self.step_down = math.fabs(step_down)
self.z_finish_depth = math.fabs(z_finish_depth)
self.z_finish_step = math.fabs(z_finish_step)
self.final_depth = final_depth
self.user_depths = user_depths
def get_depths(self):
def get_depths(self, equalstep=False):
'''returns a list of depths to be used in order from first to last.
equalstep=True: all steps down before the finish pass will be equalized.'''
depths = []
if self.user_depths is not None:
depths = self.user_depths
else:
depth = self.final_depth
depths = [depth]
depth += self.z_finish_depth
if depth + 0.0000001 < self.start_depth:
if self.z_finish_depth > 0.0000001:
depths.insert(0, depth)
layer_count = int((self.start_depth - depth) /
self.step_down - 0.0000001) + 1
if layer_count > 0:
layer_depth = (self.start_depth - depth) / layer_count
for i in range(1, layer_count):
depth += layer_depth
depths.append(depth)
depths.reverse()
total_depth = self.start_depth - self.final_depth
if total_depth <= 0:
return depths
layers_required = int((total_depth - self.z_finish_step) / self.step_down)
partial_steplayer = (total_depth - self.z_finish_step) % self.step_down
if equalstep is True and partial_steplayer > 0:
layerstep = float((total_depth - self.z_finish_step) / (layers_required + 1))
else:
layerstep = self.step_down
for step in range(layers_required):
d = self.start_depth - ((step +1) * layerstep)
depths.append(d)
if self.z_finish_step != 0 and depths[-1] != self.final_depth + self.z_finish_step:
depths.append(self.final_depth + self.z_finish_step)
if depths[-1] != self.final_depth:
depths.append(self.final_depth)
return depths