void MoonManager::create()
{
if (mCreated)
{
return;
}
mMoonSceneNode = mSkyX->getSceneManager()->getRootSceneNode()->createChildSceneNode();
mMoonBillboard = mSkyX->getSceneManager()->createBillboardSet("SkyXMoonBillboardSet", 1);
mMoonBillboard->setMaterialName(mSkyX->getGPUManager()->getMoonMaterialName());
mMoonBillboard->setBillboardType(Ogre::BBT_ORIENTED_COMMON);
mMoonBillboard->setRenderQueueGroup(Ogre::RENDER_QUEUE_SKIES_EARLY+1);
mMoonBillboard->setCastShadows(false);
mMoonBillboard->createBillboard(Ogre::Vector3(0,0,0));
mMoonSceneNode->attachObject(mMoonBillboard);
mMoonSceneNode->setPosition(mSkyX->getCamera()->getDerivedPosition());
mCreated = true;
_updateMoonBounds();
update();
}
void MoonManager::updateGeometry(Ogre::Camera* c)
{
if (!mCreated)
{
return;
}
float radius = mSkyX->getMeshManager()->getSkydomeRadius(c)*0.95f,
size = radius*mMoonSize;
mMoonBillboard->setCommonDirection((mSkyX->getController()->getMoonDirection()).normalisedCopy().perpendicular());
Ogre::Vector3 moonRelativePos = mSkyX->getController()->getMoonDirection()*
Ogre::Math::Cos(Ogre::Math::ASin((size/2)/radius))*radius;
mMoonSceneNode->setPosition(c->getDerivedPosition() + moonRelativePos);
if (moonRelativePos.y < -size/2)
{
mMoonSceneNode->setVisible(false);
}
else
{
mMoonSceneNode->setVisible(mSkyX->isVisible());
mMoonMaterial->getTechnique(0)->getPass(0)
->getVertexProgramParameters()->setNamedConstant("uSkydomeCenter", c->getDerivedPosition());
}
if (mMoonBillboard->getBoundingBox().getMaximum().x != size)
{
_updateMoonBounds(c);
}
}
void MoonManager::setMoonSize(const Ogre::Real& MoonSize)
{
mMoonSize = MoonSize;
if (!mCreated)
{
return;
}
_updateMoonBounds();
}
