/
converter.py
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/
converter.py
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import win32com.client
import pythoncom
import pylon
import math
class SpaceCoordinate(pylon.Singleton):
"""docstring for Space"""
def __init__(self):
pass
def same_point(self, p1, p2, threshold=0.0000001):
return ((p1[0]-p2[0])**2 + (p1[1]-p2[1])**2) < threshold
def distance(self, p1, p2):
return math.sqrt((p1[0]-p2[0])**2 + (p1[1]-p2[1])**2)
def distance2(self, p1, p2):
return (p1[0]-p2[0])**2 + (p1[1]-p2[1])**2
def center(self, p1, p2, p3):
'''已知三点求圆心'''
a1, b1 = p1
a2, b2 = p2
a3, b3 = p3
u = (a1**2 - a2**2 + b1**2 - b2**2) / (2*a1 - 2*a2)
v = (a1**2 - a3**2 + b1**2 - b3**2) / (2*a1 - 2*a3)
k1 = (b1-b2) / (a1-a2)
k2 = (b1-b3) / (a1-a3)
centerx = v - (u-v)*k2 / (k1-k2)
centery = (u-v) / (k1-k2)
return (centerx, centery)
def point_angle(self, point, origin):
"""计算圆上点的角度
角度制 范围 0-359"""
x = point[0] - origin[0]
y = point[1] - origin[1]
if x == 0 and y == 0:
raise ValueError('can not parse angle at origin')
if x == 0:
return 90 if y > 0 else 270
if y == 0:
return 0 if x > 0 else 180
# r = self.distance(point, origin)
# print('asin', math.asin(0.5) / (2 * math.pi) * 360)
angle = math.atan(y / x) / (2 * math.pi) * 360
if x < 0 and y < 0:
angle += 180
elif x < 0 and y > 0:
angle += 180
elif x > 0 and y < 0:
angle += 360
return angle
def quadrant(self, point, origin=(0, 0)):
x = point[0] - origin[0]
y = point[1] - origin[1]
if x * y == 0:
return 0
elif x > 0 and y > 0:
return 1
elif x < 0 and y > 0:
return 2
elif x < 0 and y < 0:
return 3
elif x > 0 and y < 0:
return 4
# 求直角三角形斜边长
# print(math.hypot(3,4))
# 求x的y次方
# print(math.pow(2,3))
# 求x的开平方
# print(math.sqrt(4))
# 截断，只取整数部分
# print(math.trunc(2.3))
# 判断是否NaN(not a number)
# print(math.isnan(2.3333))
class ColorEditor(pylon.Singleton):
"""转换 AutoCAD 颜色 index 和颜色常用名"""
def __init__(self):
pass
COLORS_DICT = {
'by_block': 0,
'by_layer': 256,
'block': 0,
'layer': 256,
'red': 1, 'yellow': 2, 'green': 3, 'cyan': 4, 'blue': 5,
'magenta': 6, 'white': 7, 'black': 7, 'grey': 8, 'red+': 12,
'red-': 11, 'blue+': 174, 'blue-': 171, 'green+': 96,
'green-': 91, 'cyan+': 142, 'cyan-': 121, 'orange': 30,
'orange+': 32, 'orange-': 31, 'megenta+': 202, 'megenta-': 211,
'102': 252, '128': 8, '192': 9, '204': 254, 'white': 255
}
COLOR_NAMES_DICT = dict((v, k) for k, v in COLORS_DICT.items())
def to_index(self, name):
if isinstance(name, int):
return name
else:
return self.COLORS_DICT.get(name, 256)
def to_name(self, index):
return self.COLOR_NAMES_DICT.get(index, index)
def random_index(self, bright=True):
if bright:
# index color 12,22,32...242 and 13,23,33...243
clr = (self.rand(24)+1)*10 + (self.rand(2)+2)
else:
clr = self.rand(1, 256)
return clr
def rand(self, a, b=None):
return pylon.rand(a, b)
class CADVariant(pylon.Singleton):
"""数字或数组转换 win32com Variant 对象"""
def __init__(self):
pass
def points_list_to_variant(self, coord):
import pylon
data = list(float(x) for x in pylon.flatten(coord)) | pylon.puts()
if len(data) % 2 == 1:
raise AttributeError("point_to_variant: coord length must be even")
com_seq = win32com.client.VARIANT(pythoncom.VT_ARRAY | pythoncom.VT_R8, data)
return com_seq
def to_array(self, *array):
com_seq = win32com.client.VARIANT(pythoncom.VT_ARRAY | pythoncom.VT_R8, array)
return com_seq
def to_point(self, x=0, y=0):
''' Point3D '''
if isinstance(x, (tuple, list)):
if len(x) == 2:
_x = float(x[0])
_y = float(x[1])
else:
raise AttributeError('point coordination should be len 2')
else:
_x = float(x)
_y = float(y)
# data = (x, y)
data = (_x, _y, 0.0)
# print(data)
com_point = win32com.client.VARIANT(pythoncom.VT_ARRAY | pythoncom.VT_R8, data)
return com_point
def to_point_2d(self, x=0, y=0):
''' Point2D '''
if isinstance(x, (tuple, list)):
if len(x) == 2:
_x = float(x[0])
_y = float(x[1])
else:
raise AttributeError('point coordination should be len 2')
else:
_x = float(x)
_y = float(y)
data = (_x, _y)
com_point = win32com.client.VARIANT(pythoncom.VT_ARRAY | pythoncom.VT_R8, data)
return com_point
def test_same_inst():
assert ColorEditor() is ColorEditor()
assert CADVariant() is CADVariant()
def test_point_2_variant():
po = CADVariant().to_point_2d(2, 3)
print(po)
po = CADVariant().to_point_2d(2, 3.4)
print(po)
po = CADVariant().to_point_2d(2, 3)
print(po)
po = CADVariant().to_point_2d((2.5, 20))
print(po)
def test_points_list_2_variant():
li = CADVariant().points_list_to_variant(2, 3, 4, 5, 6, 7, 8, 9)
print(li)
# li = Converter().points_list_to_variant(2,3,4,5,6,7,8,)
# print(li) # raise must be even
seq = [[2, 3], [4, 5], [6, 7], [8, 9]]
li = CADVariant().points_list_to_variant(seq)
print(li)
def test_color():
assert ColorEditor().to_index('red') == 1
assert ColorEditor().to_index('block') == 0
assert ColorEditor().to_index('orange-') == 31
assert ColorEditor().to_index('cyan') == 4
from collections import Counter
randoms = [ColorEditor().random_index() for i in range(10000)]
c = Counter(randoms)
print(sorted(c.keys()))
def test_random():
from collections import Counter
randoms = [ColorEditor().rand(10) for i in range(10000)]
c = Counter(randoms)
print(sorted(c.keys()))
def test_space():
sc = SpaceCoordinate()
# print(sc.point_angle((math.sin(math.pi/6),math.cos(math.pi/6)), (0,0)))
assert round(sc.point_angle((math.sin(math.pi/6), math.cos(math.pi/6)), (0, 0)), 4) == 60.0
def test_point_angle():
pa = SpaceCoordinate().point_angle
# print(result - should)
print(round(pa([1, 1], [0, 0]), 4), ': should be (45)')
print(round(pa([-1, 1], [0, 0]), 4), ': should be (135)')
print(round(pa([1, 0], [0, 0]), 4), ': should be (0)')
print(round(pa([1, -0.1], [0, 0]), 4), ': should be (354)')
print(round(pa([-1, -1], [0, 0]), 4), ': should be (225)')
print(round(pa([-1, 0], [0, 0]), 4), ': should be (180)')
print(round(pa([0.5, 1], [0, 0]), 4), ': should be (63.4349)')
print(round(pa([1, 0.5], [0, 0]), 4), ': should be (26.5650)')
print(round(pa([0, -3], [0, 0]), 4), ': should be (270)')
print(round(pa([0, 3], [0, 0]), 4), ': should be (90)')