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path: Fix serialization for circles

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The svg A can not do a full circle, since it is a two point
parametrization - if the start and end point are the same,
it draws nothing. So, use two arcs.
This commit is contained in:
Matthias Clasen
2020-11-28 11:56:25 -05:00
parent 1b57e5ac80
commit 3b79ad1e7e
1 changed files with 8 additions and 3 deletions
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11
gsk/gskpath.c
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@@ -553,16 +553,21 @@ gsk_circle_contour_print (const GskContour *contour,
GString *string)
{
const GskCircleContour *self = (const GskCircleContour *) contour;
float mid_angle = (self->end_angle - self->start_angle) / 2;
g_string_append (string, "M ");
_g_string_append_point (string, &GSK_CIRCLE_POINT_INIT (self, self->start_angle));
g_string_append (string, " A ");
_g_string_append_point (string, &GRAPHENE_POINT_INIT (self->radius, self->radius));
g_string_append_printf (string, " 0 %u %u ",
fabs (self->start_angle - self->end_angle) > 180 ? 1 : 0,
g_string_append_printf (string, " 0 0 %u ",
self->start_angle < self->end_angle ? 0 : 1);
_g_string_append_point (string, &GSK_CIRCLE_POINT_INIT (self, mid_angle));
g_string_append (string, " A ");
_g_string_append_point (string, &GRAPHENE_POINT_INIT (self->radius, self->radius));
g_string_append_printf (string, " 0 0 %u ",
self->start_angle < self->end_angle ? 0 : 1);
_g_string_append_point (string, &GSK_CIRCLE_POINT_INIT (self, self->end_angle));
if (fabs (self->start_angle - self->end_angle >= 360))
if (fabs (self->start_angle - self->end_angle) >= 360)
g_string_append (string, " z");
}