Imported existing code

indra/newview/llvlcomposition.h

@@ -0,0 +1,92 @@
+/** 
+ * @file llvlcomposition.h
+ * @brief Viewer-side representation of a composition layer...
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * 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_LLVLCOMPOSITION_H
+#define LL_LLVLCOMPOSITION_H
+
+#include "llviewerlayer.h"
+#include "llviewerimage.h"
+
+class LLSurface;
+
+class LLVLComposition : public LLViewerLayer
+{
+public:
+	LLVLComposition(LLSurface *surfacep, const U32 width, const F32 scale);
+	/*virtual*/ ~LLVLComposition();
+
+	void setSurface(LLSurface *surfacep);
+
+	// Viewer side hack to generate composition values
+	BOOL generateHeights(const F32 x, const F32 y, const F32 width, const F32 height);
+	BOOL generateComposition();
+	// Generate texture from composition values.
+	BOOL generateTexture(const F32 x, const F32 y, const F32 width, const F32 height);		
+
+	// Use these as indeces ito the get/setters below that use 'corner'
+	enum ECorner
+	{
+		SOUTHWEST = 0,
+		SOUTHEAST = 1,
+		NORTHWEST = 2,
+		NORTHEAST = 3,
+		CORNER_COUNT = 4
+	};
+	LLUUID getDetailTextureID(S32 corner);
+	LLViewerImage* getDetailTexture(S32 corner);
+	F32 getStartHeight(S32 corner);
+	F32 getHeightRange(S32 corner);
+
+	void setDetailTextureID(S32 corner, const LLUUID& id);
+	void setStartHeight(S32 corner, F32 start_height);
+	void setHeightRange(S32 corner, F32 range);
+
+	friend class LLVOSurfacePatch;
+	friend class LLDrawPoolTerrain;
+	void setParamsReady()		{ mParamsReady = TRUE; }
+	BOOL getParamsReady() const	{ return mParamsReady; }
+protected:
+	BOOL mParamsReady;
+	LLSurface *mSurfacep;
+	BOOL mTexturesLoaded;
+
+	LLPointer<LLViewerImage> mDetailTextures[CORNER_COUNT];
+	LLPointer<LLImageRaw> mRawImages[CORNER_COUNT];
+
+	F32 mStartHeight[CORNER_COUNT];
+	F32 mHeightRange[CORNER_COUNT];
+
+	F32 mTexScaleX;
+	F32 mTexScaleY;
+};
+
+#endif //LL_LLVLCOMPOSITION_H