diff options
Diffstat (limited to 'base/matrix.c')
| -rw-r--r-- | base/matrix.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/base/matrix.c b/base/matrix.c index 659193f5..43c3f4e1 100644 --- a/base/matrix.c +++ b/base/matrix.c @@ -85,3 +85,22 @@ fz_transformpoint(fz_matrix m, fz_point p) return t; } +fz_rect +fz_transformaabb(fz_matrix m, fz_rect r) +{ + fz_point s, t, u, v; + s.x = r.min.x; s.y = r.min.y; + t.x = r.min.x; t.y = r.max.y; + u.x = r.max.x; u.y = r.max.y; + v.x = r.max.x; v.y = r.min.y; + s = fz_transformpoint(m, s); + t = fz_transformpoint(m, t); + u = fz_transformpoint(m, u); + v = fz_transformpoint(m, v); + r.min.x = MIN4(s.x, t.x, u.x, v.x); + r.min.y = MIN4(s.y, t.y, u.y, v.y); + r.max.x = MAX4(s.x, t.x, u.x, v.x); + r.max.y = MAX4(s.y, t.y, u.y, v.y); + return r; +} + |