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Doing my best here

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XANTRONIX Development 2024-01-02 23:38:40 -05:00
parent 4c7ce6383d
commit 9116ad8ac2
1 changed files with 53 additions and 12 deletions
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65
py/hexagram/path.py
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@ -65,7 +65,7 @@ class Path():
return (c >= ord('0') and c <= ord('9')) return (c >= ord('0') and c <= ord('9'))
@staticmethod @staticmethod
def parse(text: str) -> Path: def parse(text: str):
commands = list() commands = list()
command = PathCommand() command = PathCommand()
state = State.NONE state = State.NONE
@ -152,6 +152,14 @@ class Path():
return cr.line_to(x, y + y2) return cr.line_to(x, y + y2)
def quad_to_cube(self, cr: cairo.Context, x1: float, y1: float, x2: float, y2: float):
x0, y0 = cr.get_current_point()
return (2 / 3 * x1 + 1 / 3 * x0,
2 / 3 * y1 + 1 / 3 * y0,
2 / 3 * x1 + 1 / 3 * x2,
2 / 3 * y1 + 1 / 3 * y2)
def draw(self, cr: cairo.Context): def draw(self, cr: cairo.Context):
last = None last = None
@ -161,21 +169,21 @@ class Path():
if command == 'M': if command == 'M':
for i in range(0, len(args), 2): for i in range(0, len(args), 2):
if i == 0: if i == 0:
cr.move_to(args[i], args[i+1]) cr.move_to(*args[i:i+2])
else: else:
cr.line_to(args[i], args[i+1]) cr.line_to(*args[i:i+2])
elif command == 'm': elif command == 'm':
for i in range(0, len(args), 2): for i in range(0, len(args), 2):
if i == 0: if i == 0:
cr.rel_move_to(args[i], args[i+1]) cr.rel_move_to(*args[i:i+2])
else: else:
cr.rel_line_to(args[i], args[i+1]) cr.rel_line_to(*args[i:i+2])
elif command == 'L': elif command == 'L':
for i in range(0, len(args), 2): for i in range(0, len(args), 2):
cr.line_to(args[i], args[i+1]) cr.line_to(*args[i:i+2])
elif command == 'l': elif command == 'l':
for i in range(0, len(args), 2): for i in range(0, len(args), 2):
cr.rel_line_to(args[i], args[i+1]) cr.rel_line_to(*args[i:i+2])
elif command == 'H': elif command == 'H':
for arg in args: for arg in args:
self.horiz_to(cr, arg) self.horiz_to(cr, arg)
@ -189,12 +197,45 @@ class Path():
for arg in args: for arg in args:
self.rel_vert_to(cr, arg) self.rel_vert_to(cr, arg)
elif command == 'C': elif command == 'C':
for arg in args: for i in range(0, len(args), 6):
cr.curve_to(*arg) cr.curve_to(*args[i:i+6])
elif command == 'c': elif command == 'c':
for arg in args: for i in range(0, len(args), 6):
cr.rel_curve_to(*arg) cr.rel_curve_to(*args[i:i+6])
elif command == 'S' or command == 's':
for i in range(0, len(args), 4):
x2, y2, x, y = args[i:i+4]
if last[0] == 'C' or last[0] == 'c':
x1, y1 = last[1][2:4]
elif last[0] == 'S' or last[0] == 's':
raise NotImplementedError
else:
x1, y1 = cr.get_current_point()
if command == 'S':
cr.curve_to(x1, y1, x2, y2, x, y)
elif command == 's':
cr.curve_to(x1, y1, x2, y2, x, y)
elif command == 'Q' or command == 'q':
for i in range(0, len(args), 4):
x1, y1, x2, y2 = args[i:i+4]
cube = self.quad_to_cube(cr, x1, y1, x2, y2)
if command == 'Q':
cr.curve_to(*cube)
elif command == 'q':
cr.rel_curve_to(*cube)
elif command == 'T' or command == 't':
for i in range(0, len(args), 2):
x, y = args[i:i+2]
if last[0] == 'Q' or last[0] == 'q':
x1, y1 = last[1][0:2]
elif last[0] == 'T' or last[0] == 't':
raise NotImplementedError
elif command == 'Z' or command == 'z': elif command == 'Z' or command == 'z':
cr.close_path() cr.close_path()
last = command last = item