IBillboardSceneNode got functions to access meshbuffers.

So uv-coordinates can now be modified directly (previously only possible via texture matrix).


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6299 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

@@ -1,5 +1,6 @@
 --------------------------
 Changes in 1.9 (not yet released)
+- IBillboardSceneNode got functions to access meshbuffers. So uv-coordinates can now be modified directly (previously only possible via texture matrix).
 - vector3d scalar operator/ and operator/= no longer multiply by the inverse but use the expected division. 
   Costs some speed, but fixes floating point troubles caused by this optimization (like x/x no longer being 1.0).
 - Bugfix: XML reader dropped last character in strings if there was a special character replacement for the second-last character.

include/IBillboardSceneNode.h

@@ -12,6 +12,7 @@ namespace irr
 namespace scene
 {
 	class ICameraSceneNode;
+	class IMeshBuffer;
 
 //! A billboard scene node.
 /** A billboard is like a 3d sprite: A 2d element,
@@ -74,6 +75,17 @@ public:
 	    That is why the usual getBoundingBox will return a "safe" boundingbox which is guaranteed
 	    to contain the billboard. While this function can return the real one. */
 	virtual const core::aabbox3d<f32>& getTransformedBillboardBoundingBox(const irr::scene::ICameraSceneNode* camera) = 0;
+
+	//! Get the amount of mesh buffers.
+	/** \return Amount of mesh buffers (IMeshBuffer) in this mesh. */
+	virtual u32 getMeshBufferCount() const = 0;
+
+	//! Get pointer to a mesh buffer.
+	/** NOTE: Positions and normals of this meshbuffers are re-calculated before rendering.
+	So this is mainly useful to access/modify the uv-coordinates.
+	\param nr: Zero based index of the mesh buffer.
+	\return Pointer to the mesh buffer or 0 if there is no such	mesh buffer. */
+	virtual IMeshBuffer* getMeshBuffer(u32 nr) const = 0;
 };
 
 } // end namespace scene

source/Irrlicht/CBillboardSceneNode.h

@@ -72,6 +72,20 @@ public:
 	//! Get the real boundingbox used by the billboard (which depends on the active camera)
 	virtual const core::aabbox3d<f32>& getTransformedBillboardBoundingBox(const irr::scene::ICameraSceneNode* camera) IRR_OVERRIDE;
 
+	//! Get the amount of mesh buffers.
+	virtual u32 getMeshBufferCount() const
+	{
+		return Buffer ? 1 : 0;
+	}
+
+	//! Get pointer to the mesh buffer.
+	virtual IMeshBuffer* getMeshBuffer(u32 nr) const
+	{
+		if ( nr == 0 )
+			return Buffer;
+		return 0;
+	}
+
 	//! Writes attributes of the scene node.
 	virtual void serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const IRR_OVERRIDE;
 

source/Irrlicht/CTextSceneNode.h

@@ -145,6 +145,18 @@ namespace scene
 
 		virtual const core::aabbox3d<f32>& getTransformedBillboardBoundingBox(const irr::scene::ICameraSceneNode* camera) IRR_OVERRIDE;
 
+		//! Get the amount of mesh buffers.
+		virtual u32 getMeshBufferCount() const
+		{
+			return Mesh ? Mesh->getMeshBufferCount() : 0;
+		}
+
+		//! Get pointer to the mesh buffer.
+		virtual IMeshBuffer* getMeshBuffer(u32 nr) const
+		{
+			return Mesh ? Mesh->getMeshBuffer(nr) : 0;
+		}
+
 	protected:
 		void updateMesh(const irr::scene::ICameraSceneNode* camera);