From 7ee19483ed81a885f464d4e93f4eefb3d4037d30 Mon Sep 17 00:00:00 2001 From: Tor Andersson Date: Sat, 4 Jun 2005 15:58:45 +0200 Subject: new world order --- base/base_rect.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 base/base_rect.c (limited to 'base/base_rect.c') diff --git a/base/base_rect.c b/base/base_rect.c new file mode 100644 index 00000000..18acb952 --- /dev/null +++ b/base/base_rect.c @@ -0,0 +1,75 @@ +#include + +fz_rect fz_infiniterect = { 1, 1, -1, -1 }; +fz_rect fz_emptyrect = { 0, 0, 0, 0 }; + +static fz_irect infinite = { 1, 1, -1, -1 }; +static fz_irect empty = { 0, 0, 0, 0 }; + +fz_irect +fz_roundrect(fz_rect f) +{ + fz_irect i; + i.x0 = fz_floor(f.x0); + i.y0 = fz_floor(f.y0); + i.x1 = fz_ceil(f.x1); + i.y1 = fz_ceil(f.y1); + return i; +} + +fz_rect +fz_intersectrects(fz_rect a, fz_rect b) +{ + fz_rect r; + if (fz_isinfiniterect(a)) return b; + if (fz_isinfiniterect(b)) return a; + r.x0 = MAX(a.x0, b.x0); + r.y0 = MAX(a.y0, b.y0); + r.x1 = MIN(a.x1, b.x1); + r.y1 = MIN(a.y1, b.y1); + return (r.x1 < r.x0 || r.y1 < r.y0) ? fz_emptyrect : r; +} + +fz_rect +fz_mergerects(fz_rect a, fz_rect b) +{ + fz_rect r; + if (fz_isinfiniterect(a) || fz_isinfiniterect(b)) + return fz_infiniterect; + if (fz_isemptyrect(a)) return b; + if (fz_isemptyrect(b)) return a; + r.x0 = MIN(a.x0, b.x0); + r.y0 = MIN(a.y0, b.y0); + r.x1 = MAX(a.x1, b.x1); + r.y1 = MAX(a.y1, b.y1); + return r; +} + +fz_irect +fz_intersectirects(fz_irect a, fz_irect b) +{ + fz_irect r; + if (fz_isinfiniterect(a)) return b; + if (fz_isinfiniterect(b)) return a; + r.x0 = MAX(a.x0, b.x0); + r.y0 = MAX(a.y0, b.y0); + r.x1 = MIN(a.x1, b.x1); + r.y1 = MIN(a.y1, b.y1); + return (r.x1 < r.x0 || r.y1 < r.y0) ? empty : r; +} + +fz_irect +fz_mergeirects(fz_irect a, fz_irect b) +{ + fz_irect r; + if (fz_isinfiniterect(a) || fz_isinfiniterect(b)) + return infinite; + if (fz_isemptyrect(a)) return b; + if (fz_isemptyrect(b)) return a; + r.x0 = MIN(a.x0, b.x0); + r.y0 = MIN(a.y0, b.y0); + r.x1 = MAX(a.x1, b.x1); + r.y1 = MAX(a.y1, b.y1); + return r; +} + -- cgit v1.2.3