Creating XTRA sources

draft

Uppercase
Lowercase
Figures
- Straight glyphs
- Round glyphs
Etcetera

Uppercase

Straight glyphs

only XTRA changes
only x-direction deltas

XTRA min

XTRA max

Round glyphs

in AmstelvarA2, internal curvature is controlled separately by XTEQ YTEQ parametric axes
in Italics, xy-direction deltas are allowed for slanted & rotated shapes

XTRA min

XTRA max

Diagonal glyphs

xy-direction deltas allowed in slanted strokes
in AmstelvarA2, slanted measurements are aligned to stroke
in AmstelvarA2 Italic, XOPQ may change slightly (?)

XTRA min

In RobotoDelta, the width and length of traps is different from the default

XTRA max

In RobotoDelta, the width and length of traps is different from the default

Lowercase

Straight glyphs

AmstelvarA2 Roman: only XTRA changes
AmstelvarA2 Roman: only x-direction deltas

XTRA min

![](https://gferreira.github.io/xTools4/images/parametric/AmstelvarA2_n_XTLCmin_measurements{: .img-fluid}

XTRA max

Round glyphs

AmstelvarA2 Roman: only XTRA changes
AmstelvarA2 Roman: internal curvature is controlled separately by XTEQ YTEQ parametric axes

XTRA min

XTRA max

![](https://gferreira.github.io/xTools4/images/parametric/AmstelvarA2_o_XTLRmax_measurements{: .img-fluid}

Diagonal glyphs

AmstelvarA2 Roman: xy-direction deltas allowed in slanted strokes
AmstelvarA2 Roman: slanted measurements are aligned to stroke
AmstelvarA2 Roman: Only XTRA changes

XTRA min

![](https://gferreira.github.io/xTools4/images/parametric/AmstelvarA2_v_XTLDmin_measurements{: .img-fluid}

XTRA max

…

Figures

Straight glyphs

AmstelvarA2 Roman: only XTRA changes
AmstelvarA2 Roman: only x-direction deltas

XTRA min

![](https://gferreira.github.io/xTools4/images/parametric/AmstelvarA2_one_XTFImin_measurements{: .img-fluid}

XTRA max

Round glyphs

AmstelvarA2 Roman: only XTRA changes
AmstelvarA2 Roman: internal curvature is controlled separately by XTEQ YTEQ parametric axes

XTRA min

XTRA max

![](https://gferreira.github.io/xTools4/images/parametric/AmstelvarA2_zero_XTFImax_measurements{: .img-fluid}

Etcetera

…