From 6ac96fe8d278883885cf1b885eade140ab76afe3 Mon Sep 17 00:00:00 2001
From: kramm <kramm>
Date: Wed, 26 Mar 2008 13:02:25 +0000
Subject: [PATCH] new function gfxbbox_intersect
---
lib/gfxtools.c | 16 ++++++++++++++++
lib/gfxtools.h | 1 +
2 files changed, 17 insertions(+)
diff --git a/lib/gfxtools.c b/lib/gfxtools.c
index 30e72d8..486e285 100644
--- a/lib/gfxtools.c
+++ b/lib/gfxtools.c
@@ -615,6 +615,22 @@ gfxbbox_t gfxbbox_expand_to_point(gfxbbox_t box, gfxcoord_t x, gfxcoord_t y)
return box;
}
+void gfxbbox_intersect(gfxbbox_t*box1, gfxbbox_t*box2)
+{
+ if(box2->xmin > box1->xmin)
+ box1->xmin = box2->xmin;
+ if(box2->ymin > box1->ymin)
+ box1->ymin = box2->ymin;
+ if(box2->xmax < box1->xmax)
+ box1->xmax = box2->xmax;
+ if(box2->ymax > box1->ymax)
+ box1->ymax = box2->ymax;
+ if(box1->xmin > box1->xmax)
+ box1->xmax = box1->xmin;
+ if(box1->ymin > box1->ymax)
+ box1->ymax = box1->ymin;
+}
+
gfxbbox_t gfxline_getbbox(gfxline_t*line)
{
gfxcoord_t x=0,y=0;
diff --git a/lib/gfxtools.h b/lib/gfxtools.h
index d88b98f..8d6d397 100644
--- a/lib/gfxtools.h
+++ b/lib/gfxtools.h
@@ -68,6 +68,7 @@ void gfxdraw_conicTo(gfxdrawer_t*draw, double cx, double cy, double tox, double
gfxbbox_t gfxline_getbbox(gfxline_t*line);
gfxbbox_t gfxbbox_expand_to_point(gfxbbox_t box, gfxcoord_t x, gfxcoord_t y);
+void gfxbbox_intersect(gfxbbox_t*box1, gfxbbox_t*box2);
void gfxline_transform(gfxline_t*line, gfxmatrix_t*matrix);
--
1.7.10.4