FGFS-4.1/OpenSceneGraph
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Added Text::getCharacterCorners(...) method to help applications that want to find out the positions of characters being rendered.

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This commit is contained in:
Robert Osfield
2017-11-21 13:41:57 +00:00
parent d60b9714fe
commit 7f97b9f999
3 changed files with 23 additions and 4 deletions
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8
include/osgText/TextBase
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@@ -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();