Added Text::getCharacterCorners(...) method to help applications that want to find out the positions of characters being rendered.

include/osgText/Text

@@ -182,9 +182,13 @@ public:
     virtual void accept(osg::PrimitiveFunctor& pf) const;
 
 
+    /** Get the coordinates of the character corners in local coordinates. Use Text::getMatrix() or Text::computeMatrix(..) to get the transform into model coordinates (see TextBase header.) */
+    bool getCharacterCorners(unsigned int index, osg::Vec3& bottomLeft, osg::Vec3& bottomRight, osg::Vec3& topLef, osg::Vec3& topRight) const;
+
     /** Resize any per context GLObject buffers to specified size. */
     virtual void resizeGLObjectBuffers(unsigned int maxSize);
 
+
     /** If State is non-zero, this function releases OpenGL objects for
       * the specified graphics context. Otherwise, releases OpenGL objexts
       * for all graphics contexts. */

include/osgText/TextBase

@@ -279,10 +279,12 @@ public:
     void getCoord(unsigned int i, osg::Vec2& c) const { c.set((*_coords)[i].x(), (*_coords)[i].y()); }
     void getCoord(unsigned int i, osg::Vec3& c) const { c = (*_coords)[i]; }
 
-
-    /** Get the internal matrix used to provide positioning of text.*/
+    /** Get the cached internal matrix used to provide positioning of text.  The cached matrix is originally computed by computeMatrix(..). */
     const osg::Matrix& getMatrix() const { return _matrix; }
 
+    /** compute the matrix that positions the text in model space for the given viewpoint.*/
+    bool computeMatrix(osg::Matrix& matrix, osg::State* state=0) const;
+
 protected:
 
     virtual ~TextBase();
@@ -295,8 +297,6 @@ protected:
 
     osg::VertexArrayState* createVertexArrayState(osg::RenderInfo& renderInfo) const;
 
-    bool computeMatrix(osg::Matrix& matrix, osg::State* state=0) const;
-
     void positionCursor(const osg::Vec2 & endOfLine_coords, osg::Vec2 & cursor, unsigned int linelength);
     String::iterator computeLastCharacterOnLine(osg::Vec2& cursor, String::iterator first,String::iterator last);
     void computePositions();