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| author | Matthias Clasen <mclasen@redhat.com> | 2020-12-23 13:36:19 -0500 |
|---|---|---|
| committer | Matthias Clasen <mclasen@redhat.com> | 2022-04-08 16:44:28 -0400 |
| commit | 282be569f66ba0c5f89ba7c4e68e01392725b67f (patch) | |
| tree | 4503d93458fac69241ed8912aed5174dd988b459 | |
| parent | f2069508cfe3bd4bca62608b1664bbdf2748be5b (diff) | |
| download | gtk+-282be569f66ba0c5f89ba7c4e68e01392725b67f.tar.gz | |
curve: Add gsk_curve_get_normal
Its easy but thats no reason not to have this api.
| -rw-r--r-- | gsk/gskcurve.c | 13 | ||||
| -rw-r--r-- | gsk/gskcurveprivate.h | 3 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gsk/gskcurve.c b/gsk/gskcurve.c index b8cf96d7e9..768c493461 100644 --- a/gsk/gskcurve.c +++ b/gsk/gskcurve.c @@ -430,6 +430,19 @@ gsk_curve_curve_get_tangent (const GskCurve *curve, graphene_vec2_normalize (tangent, tangent); } +void +gsk_curve_get_normal (const GskCurve *curve, + float t, + graphene_vec2_t *normal) +{ + graphene_vec2_t tangent; + + gsk_curve_get_tangent (curve, t, &tangent); + graphene_vec2_init (normal, + - graphene_vec2_get_y (&tangent), + graphene_vec2_get_x (&tangent)); +} + static void gsk_curve_curve_split (const GskCurve *curve, float progress, diff --git a/gsk/gskcurveprivate.h b/gsk/gskcurveprivate.h index ade1418f77..196cc3e17c 100644 --- a/gsk/gskcurveprivate.h +++ b/gsk/gskcurveprivate.h @@ -100,6 +100,9 @@ void gsk_curve_get_point (const GskCurve void gsk_curve_get_tangent (const GskCurve *curve, float progress, graphene_vec2_t *tangent); +void gsk_curve_get_normal (const GskCurve *curve, + float progress, + graphene_vec2_t *normal); void gsk_curve_split (const GskCurve *curve, float progress, GskCurve *start, |