From f182886fce31d5aa796578aebc652cfcbfff31ae Mon Sep 17 00:00:00 2001
From: timoore <timoore>
Date: Thu, 29 Nov 2007 23:55:35 +0000
Subject: [PATCH] Start of cleanup of scene graph node masks

---
 simgear/scene/util/Makefile.am         |  1 +
 simgear/scene/util/RenderConstants.hxx | 38 ++++++++++++++++++++++++++
 simgear/scene/util/SGNodeMasks.hxx     | 19 ++++++-------
 3 files changed, 48 insertions(+), 10 deletions(-)
 create mode 100644 simgear/scene/util/RenderConstants.hxx

diff --git a/simgear/scene/util/Makefile.am b/simgear/scene/util/Makefile.am
index 869fc8eb..b223228c 100644
--- a/simgear/scene/util/Makefile.am
+++ b/simgear/scene/util/Makefile.am
@@ -14,6 +14,7 @@ include_HEADERS = \
 	SGSceneUserData.hxx \
 	SGStateAttributeVisitor.hxx \
 	SGTextureStateAttributeVisitor.hxx \
+	RenderConstants.hxx \
 	VectorArrayAdapter.hxx
 
 
diff --git a/simgear/scene/util/RenderConstants.hxx b/simgear/scene/util/RenderConstants.hxx
new file mode 100644
index 00000000..91ff7721
--- /dev/null
+++ b/simgear/scene/util/RenderConstants.hxx
@@ -0,0 +1,38 @@
+/* -*-c++-*-
+ *
+ * Copyright (C) 2006-2007 Tim Moore
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
+#ifndef SIMGEAR_RENDER_CONSTANTS_HXX
+#define SIMGEAR_RENDER_CONSTANTS_HXX
+// Constants used in the scene graph, both node masks and render bins.
+namespace simgear {
+
+enum NodeMask {
+    TERRAIN_BIT = (1 << 0),
+    MAINMODEL_BIT = (1 << 1),
+    CASTSHADOW_BIT = (1 << 2),
+    RECEIVESHADOW_BIT = (1 << 3),
+    GUI_BIT = (1 << 4),
+    PANEL2D_BIT = (1 << 5),
+    PICK_BIT = (1 << 6)
+    // Different classes of lights turned on by node masks
+};
+}
+#endif
diff --git a/simgear/scene/util/SGNodeMasks.hxx b/simgear/scene/util/SGNodeMasks.hxx
index 79ac6eb9..19520eb6 100644
--- a/simgear/scene/util/SGNodeMasks.hxx
+++ b/simgear/scene/util/SGNodeMasks.hxx
@@ -22,19 +22,18 @@
 #ifndef SG_SCENE_NODEMASKS_HXX
 #define SG_SCENE_NODEMASKS_HXX
 
+#include "RenderConstants.hxx"
+
 /// If set, do terrain elevation computations with that nodes
-#define SG_NODEMASK_TERRAIN_BIT        (1<<0)
+#define SG_NODEMASK_TERRAIN_BIT        simgear::TERRAIN_BIT
 /// If set, this is the main model of this simulation
-#define SG_NODEMASK_MAINMODEL_BIT      (1<<1)
+#define SG_NODEMASK_MAINMODEL_BIT      simgear::MAINMODEL_BIT
 /// If set, cast shadows
-#define SG_NODEMASK_CASTSHADOW_BIT     (1<<2)
+#define SG_NODEMASK_CASTSHADOW_BIT     simgear::CASTSHADOW_BIT
 /// If set, cast recieves shadows
-#define SG_NODEMASK_RECIEVESHADOW_BIT  (1<<3)
-/// If set, the node is a gui element
-#define SG_NODEMASK_GUI_BIT            (1<<4)
-/// If set, the node is a 2D panel
-#define SG_NODEMASK_2DPANEL_BIT        (1<<5)
+#define SG_NODEMASK_RECIEVESHADOW_BIT  simgear::RECEIVESHADOW_BIT
+#define SG_NODEMASK_GUI_BIT            simgear::GUI_BIT
+#define SG_NODEMASK_2DPANEL_BIT        simgear::PANEL2D_BIT
 /// If set, the node is pickable
-#define SG_NODEMASK_PICK_BIT           (1<<6)
-
+#define SG_NODEMASK_PICK_BIT           simgear::PICK_BIT
 #endif
-- 
2.39.5