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CURA-4526 Delete LayerView plugin because it will be replaced with the

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SimulationView.
This commit also adapts the code in order to accept the messages coming
from the engine, with information about feedrates and line thicknesses.
Add also some changes in the GCodeReader that reads feedrates and
line thickness from the gcode file.
This commit is contained in:
Diego Prado Gesto 2017-11-21 10:47:29 +01:00
parent 43f339f927
commit b6e997c88d
22 changed files with 116 additions and 2209 deletions
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91
plugins/GCodeReader/GCodeReader.py
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@ -1,4 +1,4 @@
# Copyright (c) 2016 Aleph Objects, Inc.
# Copyright (c) 2017 Aleph Objects, Inc.
# Cura is released under the terms of the LGPLv3 or higher.
from UM.Application import Application
@ -40,7 +40,8 @@ class GCodeReader(MeshReader):
self._extruder_number = 0
self._clearValues()
self._scene_node = None
self._position = namedtuple('Position', ['x', 'y', 'z', 'e'])
# X, Y, Z position, F feedrate and E extruder values are stored
self._position = namedtuple('Position', ['x', 'y', 'z', 'f', 'e'])
self._is_layers_in_file = False # Does the Gcode have the layers comment?
self._extruder_offsets = {} # Offsets for multi extruders. key is index, value is [x-offset, y-offset]
self._current_layer_thickness = 0.2 # default
@ -48,7 +49,9 @@ class GCodeReader(MeshReader):
Preferences.getInstance().addPreference("gcodereader/show_caution", True)
def _clearValues(self):
self._filament_diameter = 2.85
self._extruder_number = 0
self._extrusion_length_offset = [0]
self._layer_type = LayerPolygon.Inset0Type
self._layer_number = 0
self._previous_z = 0
@ -97,7 +100,7 @@ class GCodeReader(MeshReader):
def _createPolygon(self, layer_thickness, path, extruder_offsets):
countvalid = 0
for point in path:
if point[3] > 0:
if point[5] > 0:
countvalid += 1
if countvalid >= 2:
# we know what to do now, no need to count further
@ -115,27 +118,56 @@ class GCodeReader(MeshReader):
line_types = numpy.empty((count - 1, 1), numpy.int32)
line_widths = numpy.empty((count - 1, 1), numpy.float32)
line_thicknesses = numpy.empty((count - 1, 1), numpy.float32)
# TODO: need to calculate actual line width based on E values
line_feedrates = numpy.empty((count - 1, 1), numpy.float32)
line_widths[:, 0] = 0.35 # Just a guess
line_thicknesses[:, 0] = layer_thickness
points = numpy.empty((count, 3), numpy.float32)
extrusion_values = numpy.empty((count, 1), numpy.float32)
i = 0
for point in path:
points[i, :] = [point[0] + extruder_offsets[0], point[2], -point[1] - extruder_offsets[1]]
extrusion_values[i] = point[4]
if i > 0:
line_types[i - 1] = point[3]
if point[3] in [LayerPolygon.MoveCombingType, LayerPolygon.MoveRetractionType]:
line_feedrates[i - 1] = point[3]
line_types[i - 1] = point[5]
if point[5] in [LayerPolygon.MoveCombingType, LayerPolygon.MoveRetractionType]:
line_widths[i - 1] = 0.1
line_thicknesses[i - 1] = 0.0 # Travels are set as zero thickness lines
else:
line_widths[i - 1] = self._calculateLineWidth(points[i], points[i-1], extrusion_values[i], extrusion_values[i-1], layer_thickness)
i += 1
this_poly = LayerPolygon(self._extruder_number, line_types, points, line_widths, line_thicknesses)
this_poly = LayerPolygon(self._extruder_number, line_types, points, line_widths, line_thicknesses, line_feedrates)
this_poly.buildCache()
this_layer.polygons.append(this_poly)
return True
def _calculateLineWidth(self, current_point, previous_point, current_extrusion, previous_extrusion, layer_thickness):
# Area of the filament
Af = (self._filament_diameter / 2) ** 2 * numpy.pi
# Length of the extruded filament
de = current_extrusion - previous_extrusion
# Volumne of the extruded filament
dVe = de * Af
# Length of the printed line
dX = numpy.sqrt((current_point[0] - previous_point[0])**2 + (current_point[2] - previous_point[2])**2)
# When the extruder recovers from a retraction, we get zero distance
if dX == 0:
return 0.1
# Area of the printed line. This area is a rectangle
Ae = dVe / dX
# This area is a rectangle with area equal to layer_thickness * layer_width
line_width = Ae / layer_thickness
# A threshold is set to avoid weird paths in the GCode
if line_width > 1.2:
return 0.35
return line_width
def _gCode0(self, position, params, path):
x, y, z, e = position
x, y, z, f, e = position
if self._is_absolute_positioning:
x = params.x if params.x is not None else x
y = params.y if params.y is not None else y
@ -145,22 +177,24 @@ class GCodeReader(MeshReader):
y += params.y if params.y is not None else 0
z += params.z if params.z is not None else 0
f = params.f if params.f is not None else f
if params.e is not None:
new_extrusion_value = params.e if self._is_absolute_positioning else e[self._extruder_number] + params.e
if new_extrusion_value > e[self._extruder_number]:
path.append([x, y, z, self._layer_type]) # extrusion
path.append([x, y, z, f, params.e + self._extrusion_length_offset[self._extruder_number], self._layer_type]) # extrusion
else:
path.append([x, y, z, LayerPolygon.MoveRetractionType]) # retraction
path.append([x, y, z, f, params.e + self._extrusion_length_offset[self._extruder_number], LayerPolygon.MoveRetractionType]) # retraction
e[self._extruder_number] = new_extrusion_value
# Only when extruding we can determine the latest known "layer height" which is the difference in height between extrusions
# Also, 1.5 is a heuristic for any priming or whatsoever, we skip those.
if z > self._previous_z and (z - self._previous_z < 1.5):
self._current_layer_thickness = z - self._previous_z + 0.05 # allow a tiny overlap
self._current_layer_thickness = z - self._previous_z # allow a tiny overlap
self._previous_z = z
else:
path.append([x, y, z, LayerPolygon.MoveCombingType])
return self._position(x, y, z, e)
path.append([x, y, z, f, e[self._extruder_number] + self._extrusion_length_offset[self._extruder_number], LayerPolygon.MoveCombingType])
return self._position(x, y, z, f, e)
# G0 and G1 should be handled exactly the same.
_gCode1 = _gCode0
@ -171,6 +205,7 @@ class GCodeReader(MeshReader):
params.x if params.x is not None else position.x,
params.y if params.y is not None else position.y,
0,
position.f,
position.e)
## Set the absolute positioning
@ -187,11 +222,14 @@ class GCodeReader(MeshReader):
# For example: G92 X10 will set the X to 10 without any physical motion.
def _gCode92(self, position, params, path):
if params.e is not None:
# Sometimes a G92 E0 is introduced in the middle of the GCode so we need to keep those offsets for calculate the line_width
self._extrusion_length_offset[self._extruder_number] += position.e[self._extruder_number] - params.e
position.e[self._extruder_number] = params.e
return self._position(
params.x if params.x is not None else position.x,
params.y if params.y is not None else position.y,
params.z if params.z is not None else position.z,
params.f if params.f is not None else position.f,
position.e)
def _processGCode(self, G, line, position, path):
@ -199,7 +237,7 @@ class GCodeReader(MeshReader):
line = line.split(";", 1)[0] # Remove comments (if any)
if func is not None:
s = line.upper().split(" ")
x, y, z, e = None, None, None, None
x, y, z, f, e = None, None, None, None, None
for item in s[1:]:
if len(item) <= 1:
continue
@ -211,17 +249,20 @@ class GCodeReader(MeshReader):
y = float(item[1:])
if item[0] == "Z":
z = float(item[1:])
if item[0] == "F":
f = float(item[1:]) / 60
if item[0] == "E":
e = float(item[1:])
if self._is_absolute_positioning and ((x is not None and x < 0) or (y is not None and y < 0)):
self._center_is_zero = True
params = self._position(x, y, z, e)
params = self._position(x, y, z, f, e)
return func(position, params, path)
return position
def _processTCode(self, T, line, position, path):
self._extruder_number = T
if self._extruder_number + 1 > len(position.e):
self._extrusion_length_offset.extend([0] * (self._extruder_number - len(position.e) + 1))
position.e.extend([0] * (self._extruder_number - len(position.e) + 1))
return position
@ -240,6 +281,8 @@ class GCodeReader(MeshReader):
def read(self, file_name):
Logger.log("d", "Preparing to load %s" % file_name)
self._cancelled = False
# We obtain the filament diameter from the selected printer to calculate line widths
self._filament_diameter = Application.getInstance().getGlobalContainerStack().getProperty("material_diameter", "value")
scene_node = SceneNode()
# Override getBoundingBox function of the sceneNode, as this node should return a bounding box, but there is no
@ -277,7 +320,7 @@ class GCodeReader(MeshReader):
Logger.log("d", "Parsing %s..." % file_name)
current_position = self._position(0, 0, 0, [0])
current_position = self._position(0, 0, 0, 0, [0])
current_path = []
for line in file:
@ -310,6 +353,7 @@ class GCodeReader(MeshReader):
else:
Logger.log("w", "Encountered a unknown type (%s) while parsing g-code.", type)
# When the layer change is reached, the polygon is computed so we have just one layer per layer per extruder
if self._is_layers_in_file and line[:len(self._layer_keyword)] == self._layer_keyword:
try:
layer_number = int(line[len(self._layer_keyword):])
@ -325,17 +369,12 @@ class GCodeReader(MeshReader):
G = self._getInt(line, "G")
if G is not None:
# When find a movement, the new posistion is calculated and added to the current_path, but
# don't need to create a polygon until the end of the layer
current_position = self._processGCode(G, line, current_position, current_path)
# < 2 is a heuristic for a movement only, that should not be counted as a layer
if current_position.z > last_z and abs(current_position.z - last_z) < 2:
if self._createPolygon(self._current_layer_thickness, current_path, self._extruder_offsets.get(self._extruder_number, [0, 0])):
current_path.clear()
if not self._is_layers_in_file:
self._layer_number += 1
continue
# When changing the extruder, the polygon with the stored paths is computed
if line.startswith("T"):
T = self._getInt(line, "T")
if T is not None:
@ -344,8 +383,8 @@ class GCodeReader(MeshReader):
current_position = self._processTCode(T, line, current_position, current_path)
# "Flush" leftovers
if not self._is_layers_in_file and len(current_path) > 1:
# "Flush" leftovers. Last layer paths are still stored
if len(current_path) > 1:
if self._createPolygon(self._current_layer_thickness, current_path, self._extruder_offsets.get(self._extruder_number, [0, 0])):
self._layer_number += 1
current_path.clear()