[gtk/path-work-rebased: 1009/1045] Add a bounding box type
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/path-work-rebased: 1009/1045] Add a bounding box type
- Date: Thu, 7 Apr 2022 19:09:26 +0000 (UTC)
commit fb01e030cb9c21d512b547939512fe501324874b
Author: Matthias Clasen <mclasen redhat com>
Date: Mon Mar 21 15:35:34 2022 -0400
Add a bounding box type
graphene_rect_t does not quite work for this purpose.
gsk/gskboundingbox.c | 80 +++++++++++++++++++++++++++++++++++++++++++++
gsk/gskboundingboxprivate.h | 44 +++++++++++++++++++++++++
gsk/meson.build | 1 +
3 files changed, 125 insertions(+)
---
diff --git a/gsk/gskboundingbox.c b/gsk/gskboundingbox.c
new file mode 100644
index 0000000000..d0f4aa8a18
--- /dev/null
+++ b/gsk/gskboundingbox.c
@@ -0,0 +1,80 @@
+#include "config.h"
+
+#include "gskboundingboxprivate.h"
+
+GskBoundingBox *
+gsk_bounding_box_init (GskBoundingBox *self,
+ const graphene_point_t *a,
+ const graphene_point_t *b)
+{
+ self->min.x = MIN (a->x, b->x);
+ self->min.y = MIN (a->y, b->y);
+ self->max.x = MAX (a->x, b->x);
+ self->max.y = MAX (a->y, b->y);
+ return self;
+}
+
+GskBoundingBox *
+gsk_bounding_box_init_copy (GskBoundingBox *self,
+ const GskBoundingBox *src)
+{
+ self->min = src->min;
+ self->max = src->max;
+ return self;
+}
+
+GskBoundingBox *
+gsk_bounding_box_init_from_rect (GskBoundingBox *self,
+ const graphene_rect_t *bounds)
+{
+ self->min = bounds->origin;
+ self->max.x = bounds->origin.x + bounds->size.width;
+ self->max.y = bounds->origin.y + bounds->size.height;
+ return self;
+}
+
+void
+gsk_bounding_box_expand (GskBoundingBox *self,
+ const graphene_point_t *p)
+{
+ self->min.x = MIN (self->min.x, p->x);
+ self->min.y = MIN (self->min.y, p->y);
+ self->max.x = MAX (self->max.x, p->x);
+ self->max.y = MAX (self->max.y, p->y);
+}
+
+graphene_rect_t *
+gsk_bounding_box_to_rect (const GskBoundingBox *self,
+ graphene_rect_t *rect)
+{
+ rect->origin = self->min;
+ rect->size.width = self->max.x - self->min.x;
+ rect->size.height = self->max.y - self->min.y;
+ return rect;
+}
+
+gboolean
+gsk_bounding_box_contains_point (const GskBoundingBox *self,
+ const graphene_point_t *p)
+{
+ return self->min.x <= p->x && p->x <= self->max.x &&
+ self->min.y <= p->y && p->y <= self->max.y;
+}
+
+gboolean
+gsk_bounding_box_intersection (const GskBoundingBox *a,
+ const GskBoundingBox *b,
+ GskBoundingBox *res)
+{
+ graphene_point_t min, max;
+
+ min.x = MAX (a->min.x, b->min.x);
+ min.y = MAX (a->min.y, b->min.y);
+ max.x = MIN (a->max.x, b->max.x);
+ max.y = MIN (a->max.y, b->max.y);
+
+ if (res)
+ gsk_bounding_box_init (res, &min, &max);
+
+ return min.x <= max.x && min.y <= max.y;
+}
diff --git a/gsk/gskboundingboxprivate.h b/gsk/gskboundingboxprivate.h
new file mode 100644
index 0000000000..f0199f2ea6
--- /dev/null
+++ b/gsk/gskboundingboxprivate.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <gsk/gsktypes.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GskBoundingBox GskBoundingBox;
+
+struct _GskBoundingBox {
+ graphene_point_t min;
+ graphene_point_t max;
+};
+
+GDK_AVAILABLE_IN_ALL
+GskBoundingBox * gsk_bounding_box_init (GskBoundingBox *self,
+ const graphene_point_t *a,
+ const graphene_point_t *b);
+
+GDK_AVAILABLE_IN_ALL
+GskBoundingBox * gsk_bounding_box_init_copy (GskBoundingBox *self,
+ const GskBoundingBox *src);
+
+GDK_AVAILABLE_IN_ALL
+GskBoundingBox * gsk_bounding_box_init_from_rect (GskBoundingBox *self,
+ const graphene_rect_t *bounds);
+
+GDK_AVAILABLE_IN_ALL
+void gsk_bounding_box_expand (GskBoundingBox *self,
+ const graphene_point_t *p);
+
+GDK_AVAILABLE_IN_ALL
+graphene_rect_t *gsk_bounding_box_to_rect (const GskBoundingBox *self,
+ graphene_rect_t *rect);
+
+GDK_AVAILABLE_IN_ALL
+gboolean gsk_bounding_box_contains_point (const GskBoundingBox *self,
+ const graphene_point_t *p);
+
+GDK_AVAILABLE_IN_ALL
+gboolean gsk_bounding_box_intersection (const GskBoundingBox *a,
+ const GskBoundingBox *b,
+ GskBoundingBox *res);
+
+G_END_DECLS
diff --git a/gsk/meson.build b/gsk/meson.build
index 08c06bf263..2cfd7a8d77 100644
--- a/gsk/meson.build
+++ b/gsk/meson.build
@@ -40,6 +40,7 @@ gsk_public_sources = files([
])
gsk_private_sources = files([
+ 'gskboundingbox.c',
'gskcairoblur.c',
'gskcontour.c',
'gskcurve.c',
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