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Add API for boolean operations on paths

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The new APIs here are:
gsk_path_union
gsk_path_intersection
gsk_path_difference
gsk_path_symmetric_difference
gsk_path_simplify
This commit is contained in:
Matthias Clasen
2023-07-01 21:33:02 -04:00
parent a2c35d8682
commit a767a0495f
2 changed files with 117 additions and 0 deletions
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93
gsk/gskpath.c
View File

@@ -1291,3 +1291,96 @@ gsk_path_offset (GskPath *self,
return gsk_path_builder_free_to_path (builder);
}
/**
* gsk_path_simplify:
* @self: a `GskPath`
* @fill_rule: a `GskFillRule`
*
* Create a new path that describes the same area as @self,
* without overlapping contours.
*
* Returns: a new `GskPath`
*/
GskPath *
gsk_path_simplify (GskPath *self,
GskFillRule fill_rule)
{
return gsk_path_op (GSK_PATH_OP_SIMPLIFY, fill_rule, self, NULL);
}
/**
* gsk_path_union:
* @first: a `GskPath`
* @second: a `GskPath`
* @fill_rule: a `GskFillRule`
*
* Create a new path that describes the union of the areas
* of the given paths.
*
* Returns: a new `GskPath`
*/
GskPath *
gsk_path_union (GskPath *first,
GskPath *second,
GskFillRule fill_rule)
{
return gsk_path_op (GSK_PATH_OP_UNION, fill_rule, first, second);
}
/**
* gsk_path_intersection:
* @first: a `GskPath`
* @second: a `GskPath`
* @fill_rule: a `GskFillRule`
*
* Create a new path that describes the intersection of the areas
* of the given paths.
*
* Returns: a new `GskPath`
*/
GskPath *
gsk_path_intersection (GskPath *first,
GskPath *second,
GskFillRule fill_rule)
{
return gsk_path_op (GSK_PATH_OP_INTERSECTION, fill_rule, first, second);
}
/**
* gsk_path_difference:
* @first: a `GskPath`
* @second: a `GskPath`
* @fill_rule: a `GskFillRule`
*
* Create a new path that describes the difference of the areas
* of the given paths.
*
* Returns: a new `GskPath`
*/
GskPath *
gsk_path_difference (GskPath *first,
GskPath *second,
GskFillRule fill_rule)
{
return gsk_path_op (GSK_PATH_OP_DIFFERENCE, fill_rule, first, second);
}
/**
* gsk_path_symmetric_difference:
* @first: a `GskPath`
* @second: a `GskPath`
* @fill_rule: a `GskFillRule`
*
* Create a new path that describes the symmetric difference
* of the areas of the given paths.
*
* Returns: a new `GskPath`
*/
GskPath *
gsk_path_symmetric_difference (GskPath *first,
GskPath *second,
GskFillRule fill_rule)
{
return gsk_path_op (GSK_PATH_OP_XOR, fill_rule, first, second);
}

24
gsk/gskpath.h
View File

@@ -120,6 +120,30 @@ GskPath * gsk_path_offset (GskPath
float distance,
GskStroke *stroke);
GDK_AVAILABLE_IN_ALL
GskPath * gsk_path_union (GskPath *first,
GskPath *second,
GskFillRule fill_rule);
GDK_AVAILABLE_IN_ALL
GskPath * gsk_path_intersection (GskPath *first,
GskPath *second,
GskFillRule fill_rule);
GDK_AVAILABLE_IN_ALL
GskPath * gsk_path_difference (GskPath *first,
GskPath *second,
GskFillRule fill_rule);
GDK_AVAILABLE_IN_ALL
GskPath * gsk_path_symmetric_difference (GskPath *first,
GskPath *second,
GskFillRule fill_rule);
GDK_AVAILABLE_IN_ALL
GskPath * gsk_path_simplify (GskPath *self,
GskFillRule fill_rule);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskPath, gsk_path_unref)
G_END_DECLS