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import re
from typing import Any, List, Tuple
import Path
import Path.Base.Util as PathUtil
import Path.Tool.Controller as PathToolController
class _FixtureSetupObject:
Path = None
Name = "Fixture"
InList = []
Label = "Fixture"
class _CommandObject:
def __init__(self, command):
self.Path = Path.Path([command])
self.Name = "Command"
self.InList = []
self.Label = "Command"
def needsTcOp(oldTc: Any, newTc: Any) -> bool:
return (
oldTc is None
or oldTc.ToolNumber != newTc.ToolNumber
or oldTc.SpindleSpeed != newTc.SpindleSpeed
or oldTc.SpindleDir != newTc.SpindleDir
)
def create_fixture_setup(processor: Any, order: int, fixture: str) -> _FixtureSetupObject:
fobj = _FixtureSetupObject()
c1 = Path.Command(fixture)
fobj.Path = Path.Path([c1])
if order != 0:
clearance_z = (
processor._job.Stock.Shape.BoundBox.ZMax
+ processor._job.SetupSheet.ClearanceHeightOffset.Value
)
c2 = Path.Command(f"G0 Z{clearance_z}")
fobj.Path.addCommands(c2)
fobj.InList.append(processor._job)
return fobj
def build_postlist_by_fixture(processor: Any, early_tool_prep: bool = False) -> list:
Path.Log.debug("Ordering by Fixture")
postlist = []
wcslist = processor._job.Fixtures
currTc = None
for index, f in enumerate(wcslist):
sublist = [create_fixture_setup(processor, index, f)]
for obj in processor._operations:
tc = PathUtil.toolControllerForOp(obj)
if tc is not None and PathUtil.activeForOp(obj):
if needsTcOp(currTc, tc):
sublist.append(tc)
Path.Log.debug(f"Appending TC: {tc.Name}")
currTc = tc
sublist.append(obj)
postlist.append((f, sublist))
return postlist
def build_postlist_by_tool(processor: Any, early_tool_prep: bool = False) -> list:
Path.Log.debug("Ordering by Tool")
postlist = []
wcslist = processor._job.Fixtures
toolstring = "None"
currTc = None
fixturelist = []
for index, f in enumerate(wcslist):
fixturelist.append(create_fixture_setup(processor, index, f))
curlist = []
sublist = []
def commitToPostlist():
if len(curlist) > 0:
for fixture in fixturelist:
sublist.append(fixture)
sublist.extend(curlist)
postlist.append((toolstring, sublist))
Path.Log.track(processor._job.PostProcessorOutputFile)
for _, obj in enumerate(processor._operations):
Path.Log.track(obj.Label)
if not PathUtil.activeForOp(obj):
Path.Log.track()
continue
tc = PathUtil.toolControllerForOp(obj)
if tc is None or not needsTcOp(currTc, tc):
curlist.append(obj)
else:
commitToPostlist()
sublist = [tc]
curlist = [obj]
currTc = tc
if "%T" in processor._job.PostProcessorOutputFile:
toolstring = f"{tc.ToolNumber}"
else:
toolstring = re.sub(r"[^\w\d-]", "_", tc.Label)
commitToPostlist()
return postlist
def build_postlist_by_operation(processor: Any, early_tool_prep: bool = False) -> list:
Path.Log.debug("Ordering by Operation")
postlist = []
wcslist = processor._job.Fixtures
currTc = None
for obj in processor._operations:
if not PathUtil.activeForOp(obj):
continue
sublist = []
Path.Log.debug(f"obj: {obj.Name}")
for index, f in enumerate(wcslist):
sublist.append(create_fixture_setup(processor, index, f))
tc = PathUtil.toolControllerForOp(obj)
if tc is not None:
if processor._job.SplitOutput or needsTcOp(currTc, tc):
sublist.append(tc)
currTc = tc
sublist.append(obj)
postlist.append((obj.Label, sublist))
return postlist
def buildPostList(processor: Any, early_tool_prep: bool = False) -> List[Tuple[str, List]]:
orderby = processor._job.OrderOutputBy
Path.Log.debug(f"Ordering by {orderby}")
if orderby == "Fixture":
postlist = build_postlist_by_fixture(processor, early_tool_prep)
elif orderby == "Tool":
postlist = build_postlist_by_tool(processor, early_tool_prep)
elif orderby == "Operation":
postlist = build_postlist_by_operation(processor, early_tool_prep)
else:
raise ValueError(f"Unknown order: {orderby}")
Path.Log.debug(f"Postlist: {postlist}")
if processor._job.SplitOutput:
final_postlist = postlist
else:
final_postlist = [("allitems", [item for sublist in postlist for item in sublist[1]])]
if early_tool_prep:
return apply_early_tool_prep(final_postlist)
return final_postlist
def apply_early_tool_prep(postlist: List[Tuple[str, List]]) -> List[Tuple[str, List]]:
"""
Apply early tool preparation optimization to the postlist.
This function modifies tool change commands to enable early tool preparation:
- Always outputs tool changes as "Tn M6" (tool number followed by change command)
- Additionally emits standalone "Tn" prep commands immediately after the previous M6
to allow the machine to prepare the next tool while the current tool is working
Example output:
T4 M6 <- change to tool 4
T5 <- prep tool 5 early (while T4 is working)
<gcode> <- operations with T4
T5 M6 <- change to tool 5 (already prepped)
T7 <- prep tool 7 early (while T5 is working)
<gcode> <- operations with T5
T7 M6 <- change to tool 7 (already prepped)
"""
# First, collect all tool controllers across all groups to find next tool
all_tool_controllers = []
for group_idx, (name, sublist) in enumerate(postlist):
for item_idx, item in enumerate(sublist):
if hasattr(item, "Proxy") and isinstance(item.Proxy, PathToolController.ToolController):
all_tool_controllers.append((group_idx, item_idx, item))
new_postlist = []
for group_idx, (name, sublist) in enumerate(postlist):
new_sublist = []
i = 0
while i < len(sublist):
item = sublist[i]
# Check if item is a tool controller
if hasattr(item, "Proxy") and isinstance(item.Proxy, PathToolController.ToolController):
# Tool controller has Path.Commands like: [Command (comment), Command M6 [T:n]]
# Find the M6 command
m6_cmd = None
for cmd in item.Path.Commands:
if cmd.Name == "M6":
m6_cmd = cmd
break
if m6_cmd and len(m6_cmd.Parameters) > 0:
# M6 command has parameters like {'T': 5}, access via key
tool_number = m6_cmd.Parameters.get("T", item.ToolNumber)
# Find this TC in the global list and check if there's a next one
tc_position = next(
(
idx
for idx, (g_idx, i_idx, tc) in enumerate(all_tool_controllers)
if g_idx == group_idx and i_idx == i
),
None,
)
next_tc = (
all_tool_controllers[tc_position + 1][2]
if tc_position is not None and tc_position + 1 < len(all_tool_controllers)
else None
)
# Keep the original M6 command with tool parameter (M6 T5 format)
# This is the valid FreeCAD format, postprocessor will reformat if needed
new_sublist.append(item)
# If there's a next tool controller, add Tn prep for it immediately after M6
if next_tc is not None:
next_tool_number = next_tc.ToolNumber
prep_next = Path.Command(f"T{next_tool_number}")
prep_next_object = _CommandObject(prep_next)
new_sublist.append(prep_next_object)
else:
# No M6 command found or no tool parameter, keep as-is
new_sublist.append(item)
else:
new_sublist.append(item)
i += 1
new_postlist.append((name, new_sublist))
return new_postlist
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