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