[osg-users] Text Outline pixelated on close up

[OpenSceneGraph Users]

Thank you, Robert!

freetype solved it.

On Tuesday, May 19, 2020 at 10:15:25 AM UTC-3, OpenSceneGraph Users wrote:
>
> Hi Rodrigo,
>
> From the looks of it you are using the osgText's default font that really 
> is just there as a fallback, it's not intended for normal application 
> usage.  The OSG has support for using true type fronts, this support is 
> provided by the freetype plugin, make sure this is being built (requires 
> the freetype library to be installed) and assign a font to the Text.  See 
> the osgtext example so see how different fonts are set.
>
> Cheers,
> Robert.
>
> On Tue, 19 May 2020 at 08:53, OpenSceneGraph Users <
> osg-... at lists.openscenegraph.org <javascript:>> wrote:
>
>> Hi,
>>
>> I'm creating text objects that lie over the map, indicating the name of 
>> some cities. Pure white text was hard to read (the background represents 
>> vegetation, so it's colored, but some parts are white). Adding an outline 
>> solved that, but on close up, the outline looks pixelated and ugly. Using a 
>> drop_shadow also looks fine from a distance, but strange from a small 
>> distance, since the black shadow doesn't touch the white text. Is there 
>> something I can do to improve the appearance of the outline from close up, 
>> or to reduce the distance between the shadow and the text?
>>
>> osg::Node* createLabel(const osg::Vec3& pos, float size, const 
>> std::string& label, osgText::Text::AxisAlignment axisAlignment)
>> {
>>     osg::Geode* geode = new osg::Geode();
>>     {
>>         osgText::Text* text = new osgText::Text;
>>         geode->addDrawable( text );
>>         text->setPosition(pos);
>>         text->setCharacterSize(size);
>>         text->setAxisAlignment(axisAlignment);
>>         text->setAlignment(osgText::Text::CENTER_CENTER);
>>         text->setBackdropType(osgText::Text::OUTLINE); // 
>> DROP_SHADOW_BOTTOM_RIGHT
>>         text->setBackdropColor(osg::Vec4(0.0f, 0.0f, 0.0f, 0.5f));
>>         std::string dest = desaxUTF8( label );
>>         text->setText( dest );
>>     }
>>     return geode;
>> }
>>
>> Thanks,
>>
>> Rodrigo.
>>
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