Added some vector operations which take just one scalar as argument.

Optimized isBetweenPoints for vector2d
Added some virtual qualifiers for better readability
Added some terrain interface methods which are not properly working, yet


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1513 dfc29bdd-3216-0410-991c-e03cc46cb475

include/CDynamicMeshBuffer.h

@@ -26,7 +26,7 @@ namespace scene
 		}
 
 		//! destructor
-		~CDynamicMeshBuffer()
+		virtual ~CDynamicMeshBuffer()
 		{
 			if (VertexBuffer)
 				VertexBuffer->drop();

include/CIndexBuffer.h

@@ -91,7 +91,7 @@ namespace scene
 			setType(IndexType);
 		}
 
-		~CIndexBuffer()
+		virtual ~CIndexBuffer()
 		{
 			delete Indices;
 		}

include/CMeshBuffer.h

@@ -18,7 +18,7 @@ namespace scene
 	{
 	public:
 		//! Default constructor for empty meshbuffer
-		CMeshBuffer():ChangedID_Vertex(1),ChangedID_Index(1),MappingHint(EHM_NEVER) // everything's default constructed
+		CMeshBuffer() : ChangedID_Vertex(1), ChangedID_Index(1), MappingHint(EHM_NEVER)
 		{
 			#ifdef _DEBUG
 			setDebugName("SMeshBuffer");

include/CVertexBuffer.h

@@ -14,7 +14,6 @@ namespace scene
 
 	class CVertexBuffer : public IVertexBuffer
 	{
-
 		class IVertexList
 		{
 		public:
@@ -75,7 +74,7 @@ namespace scene
 			setType(vertexType);
 		}
 
-		~CVertexBuffer()
+		virtual ~CVertexBuffer()
 		{
 			delete Vertices;
 		}

include/ITerrainSceneNode.h

@@ -17,6 +17,10 @@
 
 namespace irr
 {
+namespace io
+{
+	class IReadFile;
+} // end namespace io
 namespace scene
 {
 	class IMesh;
@@ -146,6 +150,15 @@ namespace scene
 		first set. If this is another value than zero, it will scale
 		the second texture coordinate set by this value. */
 		virtual void scaleTexture(f32 scale = 1.0f, f32 scale2 = 0.0f) = 0;
+
+		//! Initializes the terrain data.  Loads the vertices from the heightMapFile.
+		virtual bool loadHeightMap(io::IReadFile* file, 
+			video::SColor vertexColor = video::SColor ( 255, 255, 255, 255 ), s32 smoothFactor = 0 ) =0;
+
+		//! Initializes the terrain data.  Loads the vertices from the heightMapFile.
+		virtual bool loadHeightMapRAW(io::IReadFile* file, s32 bitsPerPixel = 16,
+			video::SColor vertexColor = video::SColor ( 255, 255, 255, 255 ), s32 smoothFactor = 0 ) =0;
+
 	};
 
 } // end namespace scene

include/vector2d.h

@@ -18,9 +18,13 @@ template <class T>
 class vector2d
 {
 public:
-
+	//! Default constructor (null vector)
 	vector2d() : X(0), Y(0) {}
+	//! Constructor with two different values
 	vector2d(T nx, T ny) : X(nx), Y(ny) {}
+	//! Constructor with the same value for both members
+	explicit vector2d(T n) : X(n), Y(n) {}
+	//! Copy constructor
 	vector2d(const vector2d<T>& other) : X(other.X), Y(other.Y) {}
 
 	// operators
@@ -217,9 +221,16 @@ public:
 	\return True if this vector is between begin and end, false if not. */
 	bool isBetweenPoints(const vector2d<T>& begin, const vector2d<T>& end) const
 	{
-		const T f = (end - begin).getLengthSQ();
-		return getDistanceFromSQ(begin) <= f &&
-			getDistanceFromSQ(end) <= f;
+		if (begin.X != end.X)
+		{
+			return ((begin.X <= X && X <= end.X) ||
+				(begin.X >= X && X >= end.X));
+		}
+		else
+		{
+			return ((begin.Y <= Y && Y <= end.Y) ||
+				(begin.Y >= Y && Y >= end.Y));
+		}
 	}
 
 	//! Get the interpolated vector

include/vector3d.h

@@ -19,7 +19,11 @@ namespace core
 	public:
 		//! Default constructor (null vector).
 		vector3d() : X(0), Y(0), Z(0) {}
+		//! Constructor with three different values
 		vector3d(T nx, T ny, T nz) : X(nx), Y(ny), Z(nz) {}
+		//! Constructor with the same value for all elements
+		explicit vector3d(T n) : X(n), Y(n), Z(n) {}
+		//! Copy constructor
 		vector3d(const vector3d<T>& other) : X(other.X), Y(other.Y), Z(other.Z) {}
 
 		// operators
@@ -30,9 +34,13 @@ namespace core
 
 		vector3d<T> operator+(const vector3d<T>& other) const { return vector3d<T>(X + other.X, Y + other.Y, Z + other.Z); }
 		vector3d<T>& operator+=(const vector3d<T>& other) { X+=other.X; Y+=other.Y; Z+=other.Z; return *this; }
+		vector3d<T> operator+(const T val) const { return vector3d<T>(X + val, Y + val, Z + val); }
+		vector3d<T>& operator+=(const T val) { X+=val; Y+=val; Z+=val; return *this; }
 
 		vector3d<T> operator-(const vector3d<T>& other) const { return vector3d<T>(X - other.X, Y - other.Y, Z - other.Z); }
 		vector3d<T>& operator-=(const vector3d<T>& other) { X-=other.X; Y-=other.Y; Z-=other.Z; return *this; }
+		vector3d<T> operator-(const T val) const { return vector3d<T>(X - val, Y - val, Z - val); }
+		vector3d<T>& operator-=(const T val) { X-=val; Y-=val; Z-=val; return *this; }
 
 		vector3d<T> operator*(const vector3d<T>& other) const { return vector3d<T>(X * other.X, Y * other.Y, Z * other.Z); }
 		vector3d<T>& operator*=(const vector3d<T>& other) { X*=other.X; Y*=other.Y; Z*=other.Z; return *this; }