Hi, have you created your own viewmatrix? I assume the red text is just photoshopped in, right?
Peter http://osghelp.com On Fri, Jul 18, 2008 at 10:49 PM, James Dickson <[EMAIL PROTECTED]> wrote: > Hi, > > I am having an issue with osgText::Text in that the text appears flipped > and backwards relative to the other geometry in the scene. (Please see > screenshot for what I mean) > In the attached screen shot I have written on the coords. of the billboard > geometry so hopefully the following code will make some sense: > > > // Go through data and plot lines. > > for (_i = _testTimeLine.begin(); _i != _testTimeLine.end(); ++_i) > > { > > std::stringstream _caption; > > _caption << *_j; > > int _y = static_cast<int>(((*_j) + _minY) * > > (( > _height - 20) / (_maxY - _minY))); > > int _x = static_cast<int>(((*_i) + _minX) * > > (( > _width - 20) / (_maxX - _minX))); > > _x = _x + 10; > > _y = _y + 10; > > // If not at the beginning of the vector, draw a line, otherwise > > // colour a pixel. > > if (_i != _testTimeLine.begin()) > > { > > m_graphImage->DrawLine(osg::Vec2(_prevx, _prevy), > > osg::Vec2(_x, _y), > > osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f)); > > } > > else > > { > > m_graphImage->SetPixel(osg::Vec2(_x, _y), > > osg::Vec3(0.0f, 0.0f, 1.0f)); > > } > > _prevx = _x; > > _prevy = _y; > > // Convert texture coordinates to uv's to use as offsets. > > float _u = ((float)_x) / ((float)_width); > > float _v = ((float)_y) / ((float)_height); > > osg::Vec3 _xoffset(_u, 0.0f, 0.0f); > > osg::Vec3 _zoffset(0.0f, 0.0f, _v); > > // Use offsets to create world space coordinates. > > osg::Vec3 _pos = m_corner + _xoffset + _yoffset > > + > _zoffset; > > // Create and position text displaying data point value. > > osgText::Text * _text = new osgText::Text; > > _text->setFont(_font); > > _text->setCharacterSize(characterSize); > > _text->setPosition(_pos); > > _text->setAxisAlignment(osgText::Text::XZ_PLANE); > > _text->setText(_caption.str()); > > _captions->addDrawable(_text); > > ++ > _j; > > } > I have managed to fix it by changing the alignment setting to > REVERSE_XZ_PLANE and switching the sign of the offset coords. However I feel > this is a slight hack and wondered if there is some other 'proper' setting? > > Many thanks, > > James > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- Regards, Peter Wraae Marino www.osghelp.com - OpenSceneGraph support site
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