void NavStars::draw(StelCore* core)
{
// Drawing is enabled?
if (markerFader.getInterstate() <= 0.0)
{
return;
}
if (stars.isEmpty())
{
StelObjectMgr* omgr = GETSTELMODULE(StelObjectMgr);
stars.fill(StelObjectP(), starNumbers.size());
for (int i = 0; i < starNumbers.size(); ++i)
{
QString name = QString("HIP %1").arg(starNumbers.at(i));
stars[i] = omgr->searchByName(name);
}
}
StelProjectorP prj = core->getProjection(StelCore::FrameJ2000);
StelPainter painter(prj);
Vec3d pos;
for (int i = 0; i < starNumbers.size(); ++i)
{
if (stars[i].isNull())
continue;
// Get the current position of the navigational star...
if (prj->projectCheck(stars[i]->getJ2000EquatorialPos(core), pos))
{
// ... and draw a marker around it
if (!markerTexture.isNull())
{
glEnable(GL_BLEND);
painter.enableTexture2d(true);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
painter.setColor(markerColor[0], markerColor[1], markerColor[2], markerFader.getInterstate());
markerTexture->bind();
painter.drawSprite2dMode(pos[0], pos[1], 11.f);
}
// Draw the localized name of the star and its ordinal number
QString label = stars[i]->getNameI18n();
if (label.isEmpty())
label = QString("%1").arg(i+1);
else
label = QString("%1 (%2)").arg(label).arg(i+1);
painter.drawText(pos[0], pos[1], label, 0, 10.f, 10.f, false);
}
}
}
