From 2b5b076b9814343f885c9de509625cfc87a3f4b6 Mon Sep 17 00:00:00 2001
From: David Williams <david@david-williams.info>
Date: Mon, 20 Apr 2009 19:43:40 +0000
Subject: [PATCH] Adjusting example to use non-cubic volume...

---
 examples/OpenGL/OpenGLWidget.cpp | 6 ++++++
 examples/OpenGL/OpenGLWidget.h   | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/examples/OpenGL/OpenGLWidget.cpp b/examples/OpenGL/OpenGLWidget.cpp
index b0c2440b..cc4909c2 100644
--- a/examples/OpenGL/OpenGLWidget.cpp
+++ b/examples/OpenGL/OpenGLWidget.cpp
@@ -32,6 +32,10 @@ void OpenGLWidget::setVolume(PolyVox::Volume<PolyVox::uint8_t>* volData)
 	//If we have any volume data then generate the new surface patches.
 	if(m_volData != 0)
 	{
+		m_uVolumeWidthInRegions = volData->getWidth() / m_uRegionSideLength;
+		m_uVolumeHeightInRegions = volData->getHeight() / m_uRegionSideLength;
+		m_uVolumeDepthInRegions = volData->getDepth() / m_uRegionSideLength;
+
 		//Our volume is broken down into cuboid regions, and we create one mesh for each region.
 		//This three-level for loop iterates over each region.
 		for(PolyVox::uint16_t uRegionZ = 0; uRegionZ < g_uVolumeSideLengthInRegions; ++uRegionZ)
@@ -81,6 +85,8 @@ void OpenGLWidget::setVolume(PolyVox::Volume<PolyVox::uint8_t>* volData)
 				}
 			}
 		}
+
+		m_distance = m_volData->getLongestSideLength() / -2.0f;
 	}
 }
 
diff --git a/examples/OpenGL/OpenGLWidget.h b/examples/OpenGL/OpenGLWidget.h
index 8bfd4b6f..9fffdbf2 100644
--- a/examples/OpenGL/OpenGLWidget.h
+++ b/examples/OpenGL/OpenGLWidget.h
@@ -54,6 +54,11 @@ class OpenGLWidget : public QGLWidget
 	//Rather than storing one big mesh, the volume is broken into regions and a mesh is stored for each region
 	std::map<PolyVox::Vector3DUint8, OpenGLSurfacePatch> m_mapOpenGLSurfacePatches;
 	std::map<PolyVox::Vector3DUint8, PolyVox::IndexedSurfacePatch*> m_mapIndexedSurfacePatches;
+
+	unsigned int m_uRegionSideLength;
+	unsigned int m_uVolumeWidthInRegions;
+	unsigned int m_uVolumeHeightInRegions;
+	unsigned int m_uVolumeDepthInRegions;
  };
 
 #endif //__PolyVox_OpenGLWidget_H__
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