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authorjaseg <git@jaseg.de>2023-07-21 13:27:02 +0200
committerjaseg <git@jaseg.de>2023-07-21 13:27:02 +0200
commita39af853c833c524a43b8a953cce60e07bb14dfb (patch)
tree17089a9a59b3c9a5cec290af463f4ce8d5dce367 /gerbonara/newstroke.py
parentb69e9fded4d3c135e4b729a2c2bca247a9ebda82 (diff)
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Schematics WIP
Diffstat (limited to 'gerbonara/newstroke.py')
-rw-r--r--gerbonara/newstroke.py72
1 files changed, 67 insertions, 5 deletions
diff --git a/gerbonara/newstroke.py b/gerbonara/newstroke.py
index b48476a..247b674 100644
--- a/gerbonara/newstroke.py
+++ b/gerbonara/newstroke.py
@@ -5,9 +5,11 @@ import unicodedata
import re
import ast
from functools import lru_cache
+import math
from importlib.resources import files
from . import data
+from .utils import rotate_point, Tag
STROKE_FONT_SCALE = 1/21
@@ -29,10 +31,39 @@ class Newstroke:
def load(kls):
return kls()
- def render(self, text, size=1.0, space_width=DEFAULT_SPACE_WIDTH, char_gap=DEFAULT_CHAR_GAP):
+ def render(self, text, size=1.0, x0=0, y0=0, rotation=0, h_align='left', v_align='bottom', space_width=DEFAULT_SPACE_WIDTH, char_gap=DEFAULT_CHAR_GAP, scale=(1, 1)):
text = unicodedata.normalize('NFC', text)
missing_glyph = self.glyphs['?']
+ sx, sy = scale
x = 0
+ if text in ('VDDA', 'PA9', 'VSS'):
+ print(text, x0, y0, rotation, h_align, v_align, scale)
+
+ if rotation >= 180:
+ rotation -= 180
+ h_align = {'left': 'right', 'right': 'left'}.get(h_align, h_align)
+ x0, y0 = -x0, y0
+
+ x0, y0 = rotate_point(x0, y0, math.radians(-rotation))
+
+ alx, aly = 0, 0
+ if h_align != 'left':
+ (minx, miny), (maxx, maxy) = bbox = self.bounding_box(text, size, space_width, char_gap)
+ w = maxx - minx
+ if h_align == 'right':
+ alx = -w
+ elif h_align == 'center':
+ alx = -w/2
+ else:
+ raise ValueError(f'Invalid h_align value "{h_align}"')
+
+ if v_align == 'top':
+ aly = -1.2*size
+ elif v_align == 'middle':
+ aly = -1.2*size/2
+ elif v_align != 'bottom':
+ raise ValueError(f'Invalid v_align value "{v_align}"')
+
for c in text:
if c == ' ':
x += space_width*size
@@ -42,15 +73,46 @@ class Newstroke:
glyph_w = max(width, max(x for st in strokes for x, _y in st))
for st in strokes:
- yield self.transform_stroke(st, translate=(x, 0), scale=(size, size))
+ yield self.transform_stroke(st, translate=(x0, y0), offset=(x+alx, aly), rotation=math.radians(-rotation), scale=(sx*size, sy*size))
x += glyph_w*size
+ def render_svg(self, text, size=1.0, x0=0, y0=0, rotation=0, h_align='left', v_align='bottom', space_width=DEFAULT_SPACE_WIDTH, char_gap=DEFAULT_CHAR_GAP, **svg_attrs):
+ if 'stroke_linecap' not in svg_attrs:
+ svg_attrs['stroke_linecap'] = 'round'
+ if 'stroke_linejoin' not in svg_attrs:
+ svg_attrs['stroke_linejoin'] = 'round'
+ if 'stroke_width' not in svg_attrs:
+ svg_attrs['stroke_width'] = f'{0.2*size:.3f}'
+ svg_attrs['fill'] = 'none'
+
+ strokes = ['M ' + ' L '.join(f'{x:.3f} {y:.3f}' for x, y in stroke)
+ for stroke in self.render(text, size=size, x0=x0, y0=y0, rotation=rotation, h_align=h_align,
+ v_align=v_align, space_width=space_width, char_gap=char_gap,
+ scale=(1, -1))]
+ return Tag('path', d=' '.join(strokes), **svg_attrs)
+
+ def bounding_box(self, text, size=1.0, space_width=DEFAULT_SPACE_WIDTH, char_gap=DEFAULT_CHAR_GAP):
+ text = unicodedata.normalize('NFC', text)
+ missing_glyph = self.glyphs['?']
+ x = 0
+ for c in text:
+ if c == ' ':
+ x += space_width*size
+ continue
+
+ width, strokes = self.glyphs.get(c, missing_glyph)
+ glyph_w = max(width, max(x for st in strokes for x, _y in st))
+ x += glyph_w*size
+
+ return (0, -0.2*size), (x, 1.2*size)
+
@classmethod
- def transform_stroke(kls, stroke, translate, scale):
- dx, dy = translate
+ def transform_stroke(kls, stroke, translate, offset, scale, rotation=0):
+ x0, y0 = translate
sx, sy = scale
- return [(x*sx+dx, y*sy+dy) for x, y in stroke]
+ dx, dy = offset
+ return [rotate_point(x*sx+dx+x0, y*sy+dy+y0, rotation, x0, y0) for x, y in stroke]
def load_font(self, newstroke_cpp):