translateMathGlyph.py

from fontMath.mathGlyph import MathGlyph, _expandImage

def translate(self, pt):
    x, y = pt    
    copiedGlyph = self.copyWithoutMathSubObjects()
    # width
    copiedGlyph.width = self.width + x
    # height
    copiedGlyph.height = self.height + y    
    # contours
    copiedGlyph.contours = []
    if self.contours:
        result = []
        for contour in self.contours:
            resultPoints = []
            for point in contour["points"]:
                segmentType, (ptx, pty), smooth, name, identifier = point
                resultPoints.append((segmentType, (ptx + x, pty + y), smooth, name, identifier))
            result.append(dict(identifier=contour["identifier"], points=resultPoints))
        copiedGlyph.contours = result
    # components
    copiedGlyph.components = []
    if self.components:
        result = []
        for component in self.components:
            component = dict(component)
            xx, xy, yx, yy, tx, ty = component["transformation"]
            component["transformation"] = xx, xy, yx, yy, tx + x, ty + y
            result.append(component)
        copiedGlyph.components = result
    # anchors
    copiedGlyph.anchors = []
    if self.anchors:
        result = []
        for anchor in self.anchors:
            anchor = dict(anchor)
            anchor["x"] += x
            anchor["y"] += y                         
            result.append(anchor)
        opiedGlyph.anchors = result
    # guidelines
    copiedGlyph.guidelines = []
    if self.guidelines:
        result = []
        for guideline in self.guidelines:
            guideline = dict(guideline)
            guideline["x"] += x
            guideline["y"] += y                         
            result.append(guideline)
        copiedGlyph.guidelines = result         
    # image
    copiedGlyph.image = _expandImage(self.image)
    if self.image:
        copiedGlyph.image = image = _expandImage(None)
        xx, xy, yx, yy, tx, ty = image["transformation"]
        image["transformation"] = xx, xy, yx, yy, tx + x, ty + y
    else:
        copiedGlyph.image = _expandImage(None)    
    return copiedGlyph


###

from defcon import Glyph
from fontPens.digestPointPen import DigestPointPen

dummy = Glyph()


pen = dummy.getPen()
pen.moveTo((100, 100))
pen.lineTo((200, 100))
pen.lineTo((200, 200))
pen.closePath()

g = MathGlyph(dummy)

r = translate(g, (10, 10))

p = DigestPointPen()
r.drawPoints(p)
print(p.getDigest())