From 2a4626d27ad2c7e2a35e7001b65826a70fc2a6cb Mon Sep 17 00:00:00 2001
From: jriegel <FreeCAD@juergen-riegel.net>
Date: Mon, 15 Sep 2014 19:50:55 +0200
Subject: [PATCH] FreeCAD-VR: Render the FreeCAD scene graph

---
 src/Gui/CoinRiftWidget.cpp           |  5 +-
 src/Gui/CoinRiftWidget.h             |  4 ++
 src/Gui/View3DInventorRiftViewer.cpp | 77 ++++++++++++++++------------
 src/Gui/View3DInventorViewer.cpp     | 17 ++++--
 4 files changed, 64 insertions(+), 39 deletions(-)

diff --git a/src/Gui/CoinRiftWidget.cpp b/src/Gui/CoinRiftWidget.cpp
index fa4602406..ac3c1d8ef 100644
--- a/src/Gui/CoinRiftWidget.cpp
+++ b/src/Gui/CoinRiftWidget.cpp
@@ -84,7 +84,8 @@ CoinRiftWidget::CoinRiftWidget() : QGLWidget()
     renderer = new SoOffscreenRenderer(SbViewportRegion(std::max(recommenedTex0Size.w, recommenedTex0Size.w),
                                                         std::max(recommenedTex1Size.h, recommenedTex1Size.h)));
     renderer->setComponents(SoOffscreenRenderer::RGB_TRANSPARENCY);
-    renderer->setBackgroundColor(SbColor(.0f, .0f, .8f));
+	BackgroundColor = SbColor(.0f, .0f, .8f);
+    renderer->setBackgroundColor(BackgroundColor);
 #endif
 #ifdef USE_FRAMEBUFFER
     m_sceneManager = new SoSceneManager();
@@ -154,7 +155,7 @@ CoinRiftWidget::CoinRiftWidget() : QGLWidget()
 									hmd->DefaultEyeFov,//eyes, 
 									eyeRenderDesc)) {
         qDebug() << "Could not configure OVR rendering.";
-        exit(3);
+        throw;
     }
 
     for (int eye = 0; eye < 2; eye++) {
diff --git a/src/Gui/CoinRiftWidget.h b/src/Gui/CoinRiftWidget.h
index ace577be9..a96e92802 100644
--- a/src/Gui/CoinRiftWidget.h
+++ b/src/Gui/CoinRiftWidget.h
@@ -96,6 +96,9 @@ public:
     explicit CoinRiftWidget();
     ~CoinRiftWidget();
     void setSceneGraph(SoNode *sceneGraph);
+	void setBase(const SbVec3f &pos){basePosition=pos;}
+	void setBackgoundColor(const SbColor &Col){BackgroundColor = Col;}
+
 protected:
 	void handlingSafetyWarning(void);
     void initializeGL();
@@ -103,6 +106,7 @@ protected:
     void resizeGL(int width, int height);
 
 	SbVec3f basePosition;
+	SbColor BackgroundColor;
 };
 
 
diff --git a/src/Gui/View3DInventorRiftViewer.cpp b/src/Gui/View3DInventorRiftViewer.cpp
index 18971b9e7..06a2cc9f4 100644
--- a/src/Gui/View3DInventorRiftViewer.cpp
+++ b/src/Gui/View3DInventorRiftViewer.cpp
@@ -34,40 +34,9 @@ using namespace Gui;
 
 static View3DInventorRiftViewer *window=0;
 
-
-void oculusStop()
+void oculusSetTestScene(View3DInventorRiftViewer *window)
 {
-    //SoDB::finish();
-	if(window){
-		delete window;
-		window = 0;
-	}
-
-    ovr_Shutdown();
-}
-
-bool oculusUp(void)
-{
-	return window!=0;
-}
-
-int oculusStart(void)
-{
-    //SoDB::init();
-
-    //QApplication app(argc, argv);
-    //qAddPostRoutine(cleanup);
-
-    // Moved here because of https://developer.oculusvr.com/forums/viewtopic.php?f=17&t=7915&p=108503#p108503
-    // Init libovr.
-    if (!ovr_Initialize()) {
-        qDebug() << "Could not initialize Oculus SDK.";
-        return 0;
-    }
-
-    window = new View3DInventorRiftViewer;
-    window->show();
-
+	assert(window);
     // An example scene.
     static const char * inlineSceneGraph[] = {
         "#Inventor V2.1 ascii\n",
@@ -105,9 +74,49 @@ int oculusStart(void)
     in.setStringArray(inlineSceneGraph);
 
     window->setSceneGraph(SoDB::readAll(&in));
+}
 
-	return 1;
+
+void oculusStop()
+{
+    //SoDB::finish();
+	if(window){
+		delete window;
+		window = 0;
+	}
+
+    ovr_Shutdown();
+}
+
+bool oculusUp(void)
+{
+	return window!=0;
+}
+
+View3DInventorRiftViewer* oculusStart(void)
+{
+    //SoDB::init();
+
+    //QApplication app(argc, argv);
+    //qAddPostRoutine(cleanup);
+
+    // Moved here because of https://developer.oculusvr.com/forums/viewtopic.php?f=17&t=7915&p=108503#p108503
+    // Init libovr.
+    if (!ovr_Initialize()) {
+        qDebug() << "Could not initialize Oculus SDK.";
+        return 0;
+    }
+	if(window)
+		return window;
+
+    window = new View3DInventorRiftViewer;
+    window->show();
+
+
+	return window;
     //return app.exec();
 }
 
+
+
 #endif //BUILD_VR
\ No newline at end of file
diff --git a/src/Gui/View3DInventorViewer.cpp b/src/Gui/View3DInventorViewer.cpp
index 8f78ea210..1a98287ed 100644
--- a/src/Gui/View3DInventorViewer.cpp
+++ b/src/Gui/View3DInventorViewer.cpp
@@ -103,6 +103,7 @@
 #include "SoFCInteractiveElement.h"
 #include "SoFCBoundingBox.h"
 #include "SoAxisCrossKit.h"
+#include "View3DInventorRiftViewer.h"
 
 #include "Selection.h"
 #include "SoFCSelectionAction.h"
@@ -1637,9 +1638,10 @@ void View3DInventorViewer::animatedViewAll(int steps, int ms)
 }
 
 #if BUILD_VR
-extern int  oculusStart(void);
+extern View3DInventorRiftViewer* oculusStart(void);
 extern bool oculusUp   (void);
 extern void oculusStop (void);
+void oculusSetTestScene(View3DInventorRiftViewer *window);
 #endif 
 
 void View3DInventorViewer::viewVR(void)
@@ -1647,8 +1649,17 @@ void View3DInventorViewer::viewVR(void)
 #if BUILD_VR
 	if(oculusUp())
 		oculusStop();
-	else
-		oculusStart();
+	else{
+#if 0
+		// start and load the simple test scene:
+		oculusSetTestScene(oculusStart());
+#else
+		View3DInventorRiftViewer* riftWin = oculusStart();
+		riftWin->setSceneGraph(pcViewProviderRoot);
+
+#endif
+
+	}
 #endif
 }