symfont¶
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class
fontTools.misc.symfont.GreenPen(func, glyphset=None)[source]¶ -
addComponent(glyphName, transformation)¶ Transform the points of the base glyph and draw it onto self.
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closePath()¶ Close the current sub path. You must call either pen.closePath() or pen.endPath() after each sub path.
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curveTo(*points)¶ Draw a cubic bezier with an arbitrary number of control points.
The last point specified is on-curve, all others are off-curve (control) points. If the number of control points is > 2, the segment is split into multiple bezier segments. This works like this:
Let n be the number of control points (which is the number of arguments to this call minus 1). If n==2, a plain vanilla cubic bezier is drawn. If n==1, we fall back to a quadratic segment and if n==0 we draw a straight line. It gets interesting when n>2: n-1 PostScript-style cubic segments will be drawn as if it were one curve. See decomposeSuperBezierSegment().
The conversion algorithm used for n>2 is inspired by NURB splines, and is conceptually equivalent to the TrueType “implied points” principle. See also decomposeQuadraticSegment().
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endPath()¶ End the current sub path, but don’t close it. You must call either pen.closePath() or pen.endPath() after each sub path.
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lineTo(pt)¶ Draw a straight line from the current point to ‘pt’.
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property
log¶
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moveTo(pt)¶ Begin a new sub path, set the current point to ‘pt’. You must end each sub path with a call to pen.closePath() or pen.endPath().
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qCurveTo(*points)¶ Draw a whole string of quadratic curve segments.
The last point specified is on-curve, all others are off-curve points.
This method implements TrueType-style curves, breaking up curves using ‘implied points’: between each two consequtive off-curve points, there is one implied point exactly in the middle between them. See also decomposeQuadraticSegment().
The last argument (normally the on-curve point) may be None. This is to support contours that have NO on-curve points (a rarely seen feature of TrueType outlines).
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skipMissingComponents= True¶
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