From 70457fe780c9a7bcc2c4debd644c591976df0011 Mon Sep 17 00:00:00 2001
From: dhilvert <dhilvert@auricle.dyndns.org>
Date: Thu, 19 Jan 2006 20:30:00 +0000
Subject: [PATCH] Add clip plane checks to d3::scene subspace candidate
 selection code.

darcs-hash:20060119203026-789c2-5e6dc48a21cb220e7c41d163751f0767ddf33a19.gz
---
 d3/scene.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/d3/scene.h b/d3/scene.h
index 199f3a9..4d454ea 100644
--- a/d3/scene.h
+++ b/d3/scene.h
@@ -2526,12 +2526,20 @@ public:
 		assert(0);
 	}
 
+	int completely_clipped(point min, point max) {
+		return (min[2] > front_clip
+		     || max[2] < rear_clip)
+	}
+
 	/*
 	 * Find candidates for subspace creation.
 	 */
 	static void find_candidates(unsigned int f1, unsigned int f2, candidates *c, point min, point max,
 			const std::vector<pt> &pt_outputs) {
 
+		if (completely_clipped(min, max))
+			return;
+
 		if (!input_might_be_visible(f1, min, max)
 		 || !input_might_be_visible(f2, min, max))
 			return;
-- 
2.11.4.GIT