diff options
Diffstat (limited to 'base/rect.c')
| -rw-r--r-- | base/rect.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/base/rect.c b/base/rect.c index cc8d0a76..a40701cc 100644 --- a/base/rect.c +++ b/base/rect.c @@ -1,5 +1,8 @@ #include <fitz.h> +static fz_rect none = { { 0, 0}, {0, 0} }; +static fz_irect inone = { { 0, 0}, {0, 0} }; + fz_rect fz_infiniterect(void) { @@ -15,17 +18,21 @@ fz_rect fz_intersectrects(fz_rect a, fz_rect b) { fz_rect r; + if (a.max.x < a.min.x) + return (b.max.x < b.min.x) ? none : b; r.min.x = MAX(a.min.x, b.min.x); r.min.y = MAX(a.min.y, b.min.y); r.max.x = MIN(a.max.x, b.max.x); r.max.y = MIN(a.max.y, b.max.y); - return r; + return (r.max.x < r.min.x || r.max.y < r.min.y) ? none : r; } fz_rect fz_mergerects(fz_rect a, fz_rect b) { fz_rect r; + if (a.max.x < a.min.x) + return (b.max.x < b.min.x) ? none : b; r.min.x = MIN(a.min.x, b.min.x); r.min.y = MIN(a.min.y, b.min.y); r.max.x = MAX(a.max.x, b.max.x); @@ -34,20 +41,35 @@ fz_mergerects(fz_rect a, fz_rect b) } fz_irect +fz_roundrect(fz_rect f) +{ + fz_irect i; + i.min.x = fz_floor(f.min.x);// - 1; + i.min.y = fz_floor(f.min.y);// - 1; + i.max.x = fz_ceil(f.max.x);// + 1; + i.max.y = fz_ceil(f.max.y);// + 1; + return i; +} + +fz_irect fz_intersectirects(fz_irect a, fz_irect b) { fz_irect r; + if (a.max.x < a.min.x) + return (b.max.x < b.min.x) ? inone : b; r.min.x = MAX(a.min.x, b.min.x); r.min.y = MAX(a.min.y, b.min.y); r.max.x = MIN(a.max.x, b.max.x); r.max.y = MIN(a.max.y, b.max.y); - return r; + return (r.max.x < r.min.x || r.max.y < r.min.y) ? inone : r; } fz_irect fz_mergeirects(fz_irect a, fz_irect b) { fz_irect r; + if (a.max.x < a.min.x) + return (b.max.x < b.min.x) ? inone : b; r.min.x = MIN(a.min.x, b.min.x); r.min.y = MIN(a.min.y, b.min.y); r.max.x = MAX(a.max.x, b.max.x); |