void ProceduralAnimApp::update()
{
mLightPos.x = mRotationRadius * math<float>::sin( float( app::getElapsedSeconds() ) );
mLightPos.z = mRotationRadius * math<float>::cos( float( app::getElapsedSeconds() ) );
mFlapAngle += 0.01f * mFlapIncrement;
float h = mAmplitude * 0.5f * math<float>::sin( mFlapAngle );
float t = mAmplitude * 0.5f * math<float>::sin( mFlapAngle - M_PI / 2 );
SkeletonRef skeleton = mSkinnedVboBird->getSkeleton();
NodeRef midL = skeleton->getBone("Gannet_Lwing_mid");
NodeRef midR = skeleton->getBone("Gannet_Rwing_mid");
NodeRef tipL = skeleton->getBone("Gannet_Lwing_tip");
NodeRef tipR = skeleton->getBone("Gannet_Rwing_tip");
midL->setRelativeRotation( midL->getInitialRelativeRotation() * Quatf( Vec3f::xAxis(), t ) * Quatf( Vec3f::zAxis(), mShoulderAngle ) );
midR->setRelativeRotation( midR->getInitialRelativeRotation() * Quatf( Vec3f::xAxis(), t ) * Quatf( Vec3f::zAxis(), mShoulderAngle ) );
tipL->setRelativeRotation( Quatf( Vec3f::yAxis(), h ) );
tipR->setRelativeRotation( Quatf( Vec3f::yAxis(), h ) );
NodeRef head = skeleton->getBone("Gannet_head");
head->setRelativeRotation( head->getInitialRelativeRotation().slerp(0.5f, mMayaCam.getCamera().getOrientation() ) );
skeleton->getBone("Gannet_body")->setRelativePosition( Vec3f(0, -t, 0) );
/* The mesh isn't automatically updated when the skeleton it contained is modified, so
* an update call is necessary (for now). This may change since I don't find it very
* intuitive... */
mSkinnedVboBird->update();
for( auto& d : mDust ) {
d.z -= 0.75f;
d.z = ( d.z < -SCENE_SIZE/2 ) ? SCENE_SIZE/2 : d.z;
}
}
