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tooling: improved anchor copying in postprocess-designspace.py (disabled)

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This commit is contained in:
Rasmus Andersson 2023-04-21 13:12:11 -07:00
parent fc0c3c9153
commit 0bd24386ca
1 changed files with 42 additions and 2 deletions
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44
misc/tools/postprocess-designspace.py
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@ -85,7 +85,7 @@ def copy_component_anchors(font, g):
print(f"TODO: support transformations with skew ({g.name})")
return
cn_g = font[cn.baseGlyph]
copy_component_anchors(font, cn_g) # depth first
# copy_component_anchors(font, cn_g) # depth first
for a in cn_g.anchors:
# Check if there are multiple components with achors with the same name.
# Don't copy any anchors if there are duplicate "_..." anchors
@ -109,12 +109,52 @@ def copy_component_anchors(font, g):
g.appendAnchor(a2)
def copy_anchors_from_components(font, g):
# We use two passes here, to deduplicate anchors which appear in several components.
# Two assumptions are made:
# 1. Insertion order of Python dict() is retained (true for Python >=3.7)
# 2. Base components are listed first, mark/accent comonents later.
# e.g. in /Ecircumflex, /E comes before /circumflexcomb, so we use "top"
# anchor from /circumflexcomb rather than /E
# skip certain glyphs
if len(g.unicodes) == 0 or len(g.anchors) > 0 or not g.components:
return
add_anchors = dict()
names_to_copy = set(('top', 'bottom'))
for cn in g.components:
checked_cn_skew = False
#print(f" [{g.name}] cn {cn.baseGlyph}")
cn_g = font[cn.baseGlyph]
copy_anchors_from_components(font, cn_g) # depth first
for a in cn_g.anchors:
if a.name not in names_to_copy:
continue
#print(f" [{g.name}] use anchor {a.name}")
m = cn.transformation # (x_scale, x_skew, y_skew, y_scale, x_offs, y_offs)
if not checked_cn_skew:
checked_cn_skew = True
if m[1] != 0.0 or m[2] != 0.0:
#print(f"TODO: skewed components ({cn_g.name} used by {g.name})")
return
a2 = defcon.Anchor(glyph=g, anchorDict=a.copy())
a2.x += m[4] * m[0]
a2.y += m[5] * m[3]
add_anchors[a.name] = a2
for a in add_anchors.values():
#print(f" [{g.name}] append anchor {a.name}")
g.appendAnchor(a)
def find_glyphs_to_decompose(designspace_source):
glyph_names = set()
# print("find_glyphs_to_decompose inspecting %r" % designspace_source.name)
font = defcon.Font(designspace_source.path)
for g in font:
# copy_component_anchors(font, g)
# copy_anchors_from_components(font, g)
if should_decompose_glyph(g):
glyph_names.add(g.name)
font.save(designspace_source.path)