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Move constants to context-managed GridfinityConfig #20

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14 changes: 8 additions & 6 deletions cqgridfinity/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,13 @@

import os

from .constants import GridfinityConfig
from .gf_obj import GridfinityObject
from .gf_baseplate import GridfinityBaseplate
from .gf_box import GridfinityBox, GridfinitySolidBox
from .gf_drawer import GridfinityDrawerSpacer
from .gf_ruggedbox import GridfinityRuggedBox

# fmt: off
__project__ = 'cqgridfinity'
__version__ = '0.5.7'
Expand All @@ -11,9 +18,4 @@

script_dir = os.path.dirname(__file__)

from .constants import *
from .gf_obj import GridfinityObject
from .gf_baseplate import GridfinityBaseplate
from .gf_box import GridfinityBox, GridfinitySolidBox
from .gf_drawer import GridfinityDrawerSpacer
from .gf_ruggedbox import GridfinityRuggedBox
__all__ = ["GridfinityConfig", "GridfinityObject", "GridfinityBaseplate", "GridfinityBox", "GridfinitySolidBox", "GridfinityDrawerSpacer", "GridfinityRuggedBox"]
358 changes: 212 additions & 146 deletions cqgridfinity/constants.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,152 +23,218 @@
#
# Globally useful constants representing Gridfinity geometry

from dataclasses import dataclass
import contextlib
from math import sqrt

SQRT2 = sqrt(2)
EPS = 1e-5
M2_DIAM = 1.8
M2_CLR_DIAM = 2.5
M3_DIAM = 3
M3_CLR_DIAM = 3.5
M3_CB_DIAM = 5.5
M3_CB_DEPTH = 3.5

GRU = 42
GRU2 = GRU / 2
GRHU = 7

GRU_CUT = 42.2 # base extrusion width
GR_WALL = 1.0 # nominal exterior wall thickness
GR_DIV_WALL = 1.2 # width of dividing walls
GR_TOL = 0.5 # nominal tolerance

GR_RAD = 4 # nominal exterior filleting radius
GR_BASE_CLR = 0.25 # clearance above the nominal base height
GR_BASE_HEIGHT = 4.75 # nominal base height

# baseplate extrusion profile
GR_BASE_CHAMF_H = 0.98994949 / SQRT2
GR_STR_H = 1.8
GR_BASE_TOP_CHAMF = GR_BASE_HEIGHT - GR_BASE_CHAMF_H - GR_STR_H
GR_BASE_PROFILE = (
(GR_BASE_TOP_CHAMF * SQRT2, 45),
GR_STR_H,
(GR_BASE_CHAMF_H * SQRT2, 45),
)
GR_STR_BASE_PROFILE = (
(GR_BASE_TOP_CHAMF * SQRT2, 45),
GR_STR_H + GR_BASE_CHAMF_H,
)

GR_BOT_H = 7 # bin nominal floor height
GR_FILLET = 1.1 # inside filleting radius
GR_FLOOR = GR_BOT_H - GR_BASE_HEIGHT # floor offset

# box/bin extrusion profile
GR_BOX_CHAMF_H = 1.1313708 / SQRT2
GR_BOX_TOP_CHAMF = GR_BASE_HEIGHT - GR_BOX_CHAMF_H - GR_STR_H + GR_BASE_CLR
GR_BOX_PROFILE = (
(GR_BOX_TOP_CHAMF * SQRT2, 45),
GR_STR_H,
(GR_BOX_CHAMF_H * SQRT2, 45),
)

# bin mating lip extrusion profile
GR_UNDER_H = 1.6
GR_TOPSIDE_H = 1.2
GR_LIP_PROFILE = (
(GR_UNDER_H * SQRT2, 45),
GR_TOPSIDE_H,
(0.7 * SQRT2, -45),
1.8,
(1.3 * SQRT2, -45),
)
GR_LIP_H = 0
for h in GR_LIP_PROFILE:
if isinstance(h, tuple):
GR_LIP_H += h[0] / SQRT2
else:
GR_LIP_H += h
GR_NO_PROFILE = (GR_LIP_H,)

# bottom hole nominal dimensions
GR_HOLE_D = 6.5
GR_HOLE_H = 2.4
GR_BOLT_D = 3.0
GR_BOLT_H = 3.6 + GR_HOLE_H
GR_HOLE_DIST = 26 / 2
GR_HOLE_SLICE = 0.25

# Rugged Box constant parameters
GR_RBOX_WALL = 2.5
GR_RBOX_FLOOR = 1.2
GR_RBOX_CWALL = 10.0
GR_RBOX_CORNER_W = 56
GR_RBOX_BACK_L = 66
GR_RBOX_FRONT_L = 56
GR_RBOX_RAD = 3.745
GR_RBOX_CRAD = 14

GR_RBOX_CHAN_W = 20
GR_RBOX_CHAN_D = GR_RBOX_CWALL - GR_RBOX_WALL
GR_RBOX_VCUT_D = 1

GR_CLASP_SLIDE_D = 39
GR_CLASP_SLIDE_W = 4

GR_RIB_W = 2
GR_RIB_L = 5
GR_RIB_GAP = 1
GR_RIB_H = 3.5
GR_RIB_SEP = 4
GR_RIB_CTR = 10

GR_REG_L = 5
GR_REG_W = 2.5
GR_REG_H = 2.5
GR_REG_R0 = 10.75
GR_REG_R1 = 8.25
GR_BREG_R0 = GR_REG_R0 + 0.25
GR_BREG_R1 = GR_REG_R1 - 0.25

GR_HANDLE_L1 = 12
GR_HANDLE_L2 = 28
GR_HANDLE_H = 7.5
GR_HANDLE_W = 5
GR_HANDLE_SEP = 12.5
GR_HANDLE_OFS = 61.5
GR_HANDLE_SZ = 30
GR_HANDLE_TH = 7
GR_HANDLE_RAD = 11

GR_LID_HANDLE_W = 70
GR_SIDE_HANDLE_W = 60

GR_HINGE_SZ = 32
GR_HINGE_D = 3
GR_HINGE_W1 = 5.5
GR_HINGE_H1 = 2.7
GR_HINGE_W2 = 2.1
GR_HINGE_H2 = 9
GR_HINGE_CTR = 30.625
GR_HINGE_W3 = 2
GR_HINGE_SEP = 1
GR_HINGE_OFFS = 2.65
GR_HINGE_SKEW = 0.15
GR_HINGE_RAD = 3.5
GR_HINGE_TOL = 0.4
GR_HEX_H = 3
GR_HEX_W = 4
GR_HEX_D = 1.3
GR_LID_WINDOW_H = 6.5

GR_LABEL_SLOT_TH = 2.5
GR_LABEL_TH = 0.8
GR_LABEL_H = 31

GR_LATCH_L = 32.5
GR_LATCH_W = 19.6
GR_LATCH_H = 7
GR_LATCH_IW = 14.75
GR_LATCH_IL = 5.2


@dataclass
class GridfinityConfig(contextlib.ContextDecorator):
GRU: float = 42
GRHU: float = 7

@property
def GRU2(self):
return self.GRU / 2

@property
def GRU_CUT(self):
return self.GRU + 0.2

GR_WALL: float = 1.0 # nominal exterior wall thickness
GR_DIV_WALL: float = 1.2 # width of dividing walls
GR_TOL: float = 0.5 # nominal tolerance

GR_RAD: float = 4 # nominal exterior filleting radius
GR_BASE_CLR: float = 0.25 # clearance above the nominal base height
GR_BASE_HEIGHT: float = 4.75 # nominal base height

# baseplate extrusion profile
GR_BASE_CHAMF_H: float = 0.98994949 / SQRT2
GR_STR_H: float = 1.8

EPS = 1e-5
M2_DIAM = 1.8
M2_CLR_DIAM = 2.5
M3_DIAM = 3
M3_CLR_DIAM = 3.5
M3_CB_DIAM = 5.5
M3_CB_DEPTH = 3.5

@property
def GR_BASE_TOP_CHAMF(self):
return self.GR_BASE_HEIGHT - self.GR_BASE_CHAMF_H - self.GR_STR_H

@property
def GR_BASE_PROFILE(self):
return (
(self.GR_BASE_TOP_CHAMF * SQRT2, 45),
self.GR_STR_H,
(self.GR_BASE_CHAMF_H * SQRT2, 45),
)

@property
def GR_STR_BASE_PROFILE(self):
return (
(self.GR_BASE_TOP_CHAMF * SQRT2, 45),
self.GR_STR_H + self.GR_BASE_CHAMF_H,
)

GR_BOT_H: float = 7 # bin nominal floor height
GR_FILLET: float = 1.1 # inside filleting radius

@property
def GR_FLOOR(self):
return self.GR_BOT_H - self.GR_BASE_HEIGHT # floor offset

# box/bin extrusion profile
GR_BOX_CHAMF_H: float = 1.1313708 / SQRT2

@property
def GR_BOX_TOP_CHAMF(self):
return self.GR_BASE_HEIGHT - self.GR_BOX_CHAMF_H - self.GR_STR_H + self.GR_BASE_CLR

@property
def GR_BOX_PROFILE(self):
return (
(self.GR_BOX_TOP_CHAMF * SQRT2, 45),
self.GR_STR_H,
(self.GR_BOX_CHAMF_H * SQRT2, 45),
)

def __enter__(self):
global _c
self._prev_config = _c
_c = self
return self

def __exit__(self, exc_type, exc_value, traceback):
global _c
_c = self._prev_config
return False

def make_default(self):
global _c
_c = self

# bin mating lip extrusion profile
GR_UNDER_H = 1.6
GR_TOPSIDE_H = 1.2

@property
def GR_LIP_PROFILE(self):
return (
(self.GR_UNDER_H * SQRT2, 45),
self.GR_TOPSIDE_H,
(0.7 * SQRT2, -45),
1.8,
(1.3 * SQRT2, -45),
)

@property
def GR_LIP_H(self):
GR_LIP_H = 0
for h in self.GR_LIP_PROFILE:
if isinstance(h, tuple):
GR_LIP_H += h[0] / SQRT2
else:
GR_LIP_H += h
return GR_LIP_H

@property
def GR_NO_PROFILE(self):
return (self.GR_LIP_H,)

# bottom hole nominal dimensions
GR_HOLE_D = 6.5
GR_HOLE_H = 2.4
GR_BOLT_D = 3.0
@property
def GR_BOLT_H(self):
return 3.6 + self.GR_HOLE_H
GR_HOLE_DIST = 26 / 2
GR_HOLE_SLICE = 0.25

# Rugged Box constant parameters
GR_RBOX_WALL = 2.5
GR_RBOX_FLOOR = 1.2
GR_RBOX_CWALL = 10.0
GR_RBOX_CORNER_W = 56
GR_RBOX_BACK_L = 66
GR_RBOX_FRONT_L = 56
GR_RBOX_RAD = 3.745
GR_RBOX_CRAD = 14

GR_RBOX_CHAN_W = 20

@property
def GR_RBOX_CHAN_D(self):
return self.GR_RBOX_CWALL - self.GR_RBOX_WALL
GR_RBOX_VCUT_D = 1

GR_CLASP_SLIDE_D = 39
GR_CLASP_SLIDE_W = 4

GR_RIB_W = 2
GR_RIB_L = 5
GR_RIB_GAP = 1
GR_RIB_H = 3.5
GR_RIB_SEP = 4
GR_RIB_CTR = 10

GR_REG_L = 5
GR_REG_W = 2.5
GR_REG_H = 2.5
GR_REG_R0 = 10.75
GR_REG_R1 = 8.25
@property
def GR_BREG_R0(self):
return self.GR_REG_R0 + 0.25
@property
def GR_BREG_R1(self):
return self.GR_REG_R1 - 0.25

GR_HANDLE_L1 = 12
GR_HANDLE_L2 = 28
GR_HANDLE_H = 7.5
GR_HANDLE_W = 5
GR_HANDLE_SEP = 12.5
GR_HANDLE_OFS = 61.5
GR_HANDLE_SZ = 30
GR_HANDLE_TH = 7
GR_HANDLE_RAD = 11

GR_LID_HANDLE_W = 70
GR_SIDE_HANDLE_W = 60

GR_HINGE_SZ = 32
GR_HINGE_D = 3
GR_HINGE_W1 = 5.5
GR_HINGE_H1 = 2.7
GR_HINGE_W2 = 2.1
GR_HINGE_H2 = 9
GR_HINGE_CTR = 30.625
GR_HINGE_W3 = 2
GR_HINGE_SEP = 1
GR_HINGE_OFFS = 2.65
GR_HINGE_SKEW = 0.15
GR_HINGE_RAD = 3.5
GR_HINGE_TOL = 0.4
GR_HEX_H = 3
GR_HEX_W = 4
GR_HEX_D = 1.3
GR_LID_WINDOW_H = 6.5

GR_LABEL_SLOT_TH = 2.5
GR_LABEL_TH = 0.8
GR_LABEL_H = 31

GR_LATCH_L = 32.5
GR_LATCH_W = 19.6
GR_LATCH_H = 7
GR_LATCH_IW = 14.75
GR_LATCH_IL = 5.2

_c = GridfinityConfig()
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