From 1b1f00e70564d6acb2b1e09b0a5f430da4e4b8a3 Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Thu, 15 Apr 2010 15:15:39 -0400 Subject: Support infinitely large bounding boxes. --- libdimension/geometry.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'libdimension/geometry.c') diff --git a/libdimension/geometry.c b/libdimension/geometry.c index 7dc6725..304f21d 100644 --- a/libdimension/geometry.c +++ b/libdimension/geometry.c @@ -363,6 +363,15 @@ dmnsn_matrix_vector_mul(dmnsn_matrix lhs, dmnsn_vector rhs) dmnsn_bounding_box dmnsn_matrix_bounding_box_mul(dmnsn_matrix trans, dmnsn_bounding_box box) { + /* Infinite bounding box support */ + if (isinf(box.min.x) || isinf(box.min.y) || isinf(box.min.z) + || isinf(box.max.x) || isinf(box.max.y) || isinf(box.max.z)) + { + box.min = dmnsn_new_vector(-INFINITY, -INFINITY, -INFINITY); + box.max = dmnsn_new_vector(INFINITY, INFINITY, INFINITY); + return box; + } + dmnsn_vector corner; dmnsn_bounding_box ret; ret.min = dmnsn_matrix_vector_mul(trans, box.min); -- cgit v1.2.3