Add function ISceneNode::getTransformedBoundingBoxEdges.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4446 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 --------------------------
 Changes in 1.9 (not yet released)
 
+- Add function ISceneNode::getTransformedBoundingBoxEdges.
 - Improve automatic compiling under solaris (proposed by curaga)
 - Add in IGUICheckBox: setDrawBackground, isDrawBackgroundEnabled, setDrawBorder, isDrawBorderEnabled
 - IGUISpinBox now passes on the EGET_BUTTON_CLICKED, EGET_EDITBOX_CHANGED and EGET_EDITBOX_ENTER events from it's sub-elements.

include/ISceneNode.h

@@ -174,7 +174,9 @@ namespace scene
 
 
 		//! Get the axis aligned, transformed and animated absolute bounding box of this node.
-		/** \return The transformed bounding box. */
+		/** Note: The result is still an axis-aligned bounding box, so it's size 
+		changes with rotation. 
+		\return The transformed bounding box. */
 		virtual const core::aabbox3d<f32> getTransformedBoundingBox() const
 		{
 			core::aabbox3d<f32> box = getBoundingBox();
@@ -182,6 +184,18 @@ namespace scene
 			return box;
 		}
 
+		//! Get a the 8 corners of the original bounding box transformed and 
+		//! animated by the absolute transformation.
+		/** Note: The result is _not_ identical to getTransformedBoundingBox().getEdges(), 
+		but getting an aabbox3d of these edges would then be identical.
+		\param edges Receives an array with the transformed edges */
+		virtual const void getTransformedBoundingBoxEdges(core::array< core::vector3d<f32> >& edges) const
+		{
+			edges.set_used(8);
+			getBoundingBox().getEdges( edges.pointer() );
+			for ( u32 i=0; i<8; ++i )
+				AbsoluteTransformation.transformVect( edges[i] );
+		}
 
 		//! Get the absolute transformation of the node. Is recalculated every OnAnimate()-call.
 		/** NOTE: For speed reasons the absolute transformation is not