90e50b35ee
This commit adds GskPath, GskPathPoint and GskPathBuilder. GskPath is a data structure for paths that consists of contours, which in turn might contain Bézier curves. The data structure is inspired by Skia, with separate arrays for points and operations. One advantage of this arrangement is that start and end points are shared between adjacent curves. In addition to the usual contours comprised of Bézier segments, GskPath supports certain special contours directly, such as rectangles, rounded rectangles and circles.
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
#pragma once
|
|
|
|
#if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
|
|
#error "Only <gsk/gsk.h> can be included directly."
|
|
#endif
|
|
|
|
|
|
#include <gsk/gsktypes.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GSK_TYPE_PATH_POINT (gsk_path_point_get_type ())
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
GType gsk_path_point_get_type (void) G_GNUC_CONST;
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
GskPathPoint * gsk_path_point_ref (GskPathPoint *self);
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gsk_path_point_unref (GskPathPoint *self);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gsk_path_point_get_position (GskPathPoint *self,
|
|
graphene_point_t *position);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
void gsk_path_point_get_tangent (GskPathPoint *self,
|
|
GskPathDirection direction,
|
|
graphene_vec2_t *tangent);
|
|
|
|
GDK_AVAILABLE_IN_ALL
|
|
float gsk_path_point_get_curvature (GskPathPoint *self,
|
|
graphene_point_t *center);
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskPathPoint, gsk_path_point_unref)
|
|
|
|
G_END_DECLS
|