Merge from 1.7 branch. Fixes for SSharedMeshBuffer and matrix4

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3925 dfc29bdd-3216-0410-991c-e03cc46cb475

include/SSharedMeshBuffer.h

@@ -88,6 +88,12 @@ namespace scene
 			return Indices.size();
 		}
 
+		//! Get type of index data which is stored in this meshbuffer.
+		virtual video::E_INDEX_TYPE getIndexType() const
+		{
+			return video::EIT_16BIT;
+		}
+
 		//! returns an axis aligned bounding box
 		virtual const core::aabbox3d<f32>& getBoundingBox() const
 		{
@@ -119,6 +125,54 @@ namespace scene
 			}
 		}
 
+		//! returns position of vertex i
+		virtual const core::vector3df& getPosition(u32 i) const
+		{
+			if (Vertices)
+				return (*Vertices)[Indices[i]].Pos;
+			else
+				return core::vector3df();
+		}
+
+		//! returns position of vertex i
+		virtual core::vector3df& getPosition(u32 i)
+		{
+			_IRR_DEBUG_BREAK_IF(!Vertices);
+			return (*Vertices)[Indices[i]].Pos;
+		}
+
+		//! returns normal of vertex i
+		virtual const core::vector3df& getNormal(u32 i) const
+		{
+			if (Vertices)
+				return (*Vertices)[Indices[i]].Normal;
+			else
+				return core::vector3df();
+		}
+
+		//! returns normal of vertex i
+		virtual core::vector3df& getNormal(u32 i)
+		{
+			_IRR_DEBUG_BREAK_IF(!Vertices);
+			return (*Vertices)[Indices[i]].Normal;
+		}
+
+		//! returns texture coord of vertex i
+		virtual const core::vector2df& getTCoords(u32 i) const
+		{
+			if (Vertices)
+				return (*Vertices)[Indices[i]].TCoords;
+			else
+				return core::vector2df();
+		}
+
+		//! returns texture coord of vertex i
+		virtual core::vector2df& getTCoords(u32 i)
+		{
+			_IRR_DEBUG_BREAK_IF(!Vertices);
+			return (*Vertices)[Indices[i]].TCoords;
+		}
+
 		//! append the vertices and indices to the current buffer
 		virtual void append(const void* const vertices, u32 numVertices, const u16* const indices, u32 numIndices) {}
 

include/SSkinMeshBuffer.h

@@ -99,7 +99,10 @@ struct SSkinMeshBuffer : public IMeshBuffer
 
 	//! Get type of index data which is stored in this meshbuffer.
 	/** \return Index type of this buffer. */
-	virtual video::E_INDEX_TYPE getIndexType() const { return video::EIT_16BIT; }
+	virtual video::E_INDEX_TYPE getIndexType() const
+	{
+		return video::EIT_16BIT;
+	}
 
 	//! Get pointer to index array
 	virtual const u16* getIndices() const

include/matrix4.h

@@ -1619,7 +1619,7 @@ namespace core
 		M[12] = 0;
 		M[13] = 0;
 		M[14] = (T)(zNear/(zNear-zFar));
-		M[15] = -1;
+		M[15] = 1;
 
 #if defined ( USE_MATRIX_TEST )
 		definitelyIdentityMatrix=false;