One characteristic of a pen-stroke is its expansion parallel to its skeleton line. This means a stroke always grows from the center to left and right. In some cases we can recalculate and compensate the joints or we can pin them to another location. The problem with pinning the center to somewhere else is the deformation of the skeleton itself. So far with RedPill, pining a left point to another left point is not so trivial as we can not use recursion (referring to the origin) and we cannot store coordinates.
In this solution I follow the stroke as long as possible and use knots where we want to change direction.
I'm using a third point, or corner point as I need the pointBefore and pointAfter as references to shift x and y and they make sure the stroke starts (continues) at the same time and center. This is a close up of the base e knot:
And the knot in base and bold:
The code to achieve this is rather short (and I'm certain there's a even shorter cps solution):
/* Corner Point */
@namespace(glyph#e) {
@dictionary {
right {
A: S"glyph#e penstroke:i(0) point:i(1) right":on:y;
B: S"glyph#e penstroke:i(0) point:i(3) right":on:x;
}
}
penstroke:i(0) point:i(2) > right {
on: Vector B A;
in: pointBefore:on;
out: pointAfter:on;
}
penstroke:i(0) point:i(1) > right {
out: pointAfter:on;
}
penstroke:i(0) point:i(3) > right {
in: pointBefore:on;
}
}
By repositioning the in and out points I simply clean up the redundant control points.