Convert doxygen to rst for Cura scripts

This commit is contained in:
Nino van Hooff 2020-05-28 16:25:26 +02:00
parent bb2a176e36
commit fe779d9501
2 changed files with 71 additions and 42 deletions

View file

@ -31,16 +31,19 @@ MACHINE_MAX_JERK_E = 5
MACHINE_MINIMUM_FEEDRATE = 0.001
MACHINE_ACCELERATION = 3000
## Gets the code and number from the given g-code line.
def get_code_and_num(gcode_line: str) -> Tuple[str, str]:
"""Gets the code and number from the given g-code line."""
gcode_line = gcode_line.strip()
cmd_code = gcode_line[0].upper()
cmd_num = str(gcode_line[1:])
return cmd_code, cmd_num
## Fetches arguments such as X1 Y2 Z3 from the given part list and returns a
# dict.
def get_value_dict(parts: List[str]) -> Dict[str, str]:
"""Fetches arguments such as X1 Y2 Z3 from the given part list and returns a dict"""
value_dict = {}
for p in parts:
p = p.strip()
@ -63,39 +66,49 @@ def calc_distance(pos1, pos2):
distance = math.sqrt(distance)
return distance
## Given the initial speed, the target speed, and the acceleration, calculate
# the distance that's neede for the acceleration to finish.
def calc_acceleration_distance(init_speed: float, target_speed: float, acceleration: float) -> float:
"""Given the initial speed, the target speed, and the acceleration
calculate the distance that's neede for the acceleration to finish.
"""
if acceleration == 0:
return 0.0
return (target_speed ** 2 - init_speed ** 2) / (2 * acceleration)
## Gives the time it needs to accelerate from an initial speed to reach a final
# distance.
def calc_acceleration_time_from_distance(initial_feedrate: float, distance: float, acceleration: float) -> float:
"""Gives the time it needs to accelerate from an initial speed to reach a final distance."""
discriminant = initial_feedrate ** 2 - 2 * acceleration * -distance
#If the discriminant is negative, we're moving in the wrong direction.
#Making the discriminant 0 then gives the extremum of the parabola instead of the intersection.
discriminant = max(0, discriminant)
return (-initial_feedrate + math.sqrt(discriminant)) / acceleration
## Calculates the point at which you must start braking.
#
# This gives the distance from the start of a line at which you must start
# decelerating (at a rate of `-acceleration`) if you started at speed
# `initial_feedrate` and accelerated until this point and want to end at the
# `final_feedrate` after a total travel of `distance`. This can be used to
# compute the intersection point between acceleration and deceleration in the
# cases where the trapezoid has no plateau (i.e. never reaches maximum speed).
def calc_intersection_distance(initial_feedrate: float, final_feedrate: float, acceleration: float, distance: float) -> float:
"""Calculates the point at which you must start braking.
This gives the distance from the start of a line at which you must start
decelerating (at a rate of `-acceleration`) if you started at speed
`initial_feedrate` and accelerated until this point and want to end at the
`final_feedrate` after a total travel of `distance`. This can be used to
compute the intersection point between acceleration and deceleration in the
cases where the trapezoid has no plateau (i.e. never reaches maximum speed).
"""
if acceleration == 0:
return 0
return (2 * acceleration * distance - initial_feedrate * initial_feedrate + final_feedrate * final_feedrate) / (4 * acceleration)
## Calculates the maximum speed that is allowed at this point when you must be
# able to reach target_velocity using the acceleration within the allotted
# distance.
def calc_max_allowable_speed(acceleration: float, target_velocity: float, distance: float) -> float:
"""Calculates the maximum speed that is allowed at this point when you must be
able to reach target_velocity using the acceleration within the allotted
distance.
"""
return math.sqrt(target_velocity * target_velocity - 2 * acceleration * distance)
@ -130,10 +143,12 @@ class Command:
self._delta = [0, 0, 0]
self._abs_delta = [0, 0, 0]
## Calculate the velocity-time trapezoid function for this move.
#
# Each move has a three-part function mapping time to velocity.
def calculate_trapezoid(self, entry_factor, exit_factor):
"""Calculate the velocity-time trapezoid function for this move.
Each move has a three-part function mapping time to velocity.
"""
initial_feedrate = self._nominal_feedrate * entry_factor
final_feedrate = self._nominal_feedrate * exit_factor
@ -169,9 +184,9 @@ class Command:
return self._cmd_str.strip() + " ; --- " + info + os.linesep
## Estimates the execution time of this command and calculates the state
# after this command is executed.
def parse(self) -> None:
"""Estimates the execution time of this command and calculates the state after this command is executed."""
line = self._cmd_str.strip()
if not line:
self._is_empty = True