Imported existing code

indra/newview/llsky.h

@@ -0,0 +1,124 @@
+/** 
+ * @file llsky.h
+ * @brief It's, uh, the sky!
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLSKY_H
+#define LL_LLSKY_H
+
+#include "llmath.h"
+//#include "vmath.h"
+#include "v3math.h"
+#include "v4math.h"
+#include "v4color.h"
+#include "v4coloru.h"
+#include "llvosky.h"
+#include "llvoground.h"
+
+const F32 NIGHTTIME_ELEVATION			= -8.0f;	// degrees
+const F32 NIGHTTIME_ELEVATION_COS		= (F32)sin(NIGHTTIME_ELEVATION*DEG_TO_RAD);
+
+class LLViewerCamera;
+
+class LLVOWLSky;
+class LLVOWLClouds;
+
+
+class LLSky  
+{
+public:
+	LLSky();
+	~LLSky();
+
+	void init(const LLVector3 &sun_direction);
+
+	void cleanup();
+
+	void setOverrideSun(BOOL override);
+	BOOL getOverrideSun() { return mOverrideSimSunPosition; }
+	void setSunDirection(const LLVector3 &sun_direction, const LLVector3 &sun_ang_velocity);
+	void setSunTargetDirection(const LLVector3 &sun_direction, const LLVector3 &sun_ang_velocity);
+
+	LLColor4 getFogColor() const;
+
+	void setCloudDensityAtAgent(F32 cloud_density);
+	void setWind(const LLVector3& wind);
+
+	void updateFog(const F32 distance);
+	void updateCull();
+	void updateSky();
+
+	void propagateHeavenlyBodies(F32 dt);					// dt = seconds
+
+	S32  mLightingGeneration;
+	BOOL mUpdatedThisFrame;
+
+	void setFogRatio(const F32 fog_ratio);		// Fog distance as fraction of cull distance.
+	F32 getFogRatio() const;
+	LLColor4U getFadeColor() const;
+
+	LLVector3 getSunDirection() const;
+	LLVector3 getMoonDirection() const;
+	LLColor4 getSunDiffuseColor() const;
+	LLColor4 getMoonDiffuseColor() const;
+	LLColor4 getSunAmbientColor() const;
+	LLColor4 getMoonAmbientColor() const;
+	LLColor4 getTotalAmbientColor() const;
+	BOOL sunUp() const;
+
+	F32 getSunPhase() const;
+	void setSunPhase(const F32 phase);
+
+	void destroyGL();
+	void restoreGL();
+	void resetVertexBuffers();
+
+public:
+	LLPointer<LLVOSky>		mVOSkyp;	// Pointer to the LLVOSky object (only one, ever!)
+	LLPointer<LLVOGround>	mVOGroundp;
+
+	LLPointer<LLVOWLSky>	mVOWLSkyp;
+
+	LLVector3 mSunTargDir;
+
+	// Legacy stuff
+	LLVector3 mSunDefaultPosition;
+
+protected:
+	BOOL			mOverrideSimSunPosition;
+
+	F32				mSunPhase;
+	LLColor4		mFogColor;				// Color to use for fog and haze
+
+	LLVector3		mLastSunDirection;
+};
+
+extern LLSky    gSky;
+#endif