template <> const Item::Bound payloadGetBound(const Overlay::Pointer& overlay) {
if (overlay->is3D()) {
return static_cast<Base3DOverlay*>(overlay.get())->getBounds();
} else {
QRect bounds = static_cast<Overlay2D*>(overlay.get())->getBounds();
return AABox(glm::vec3(bounds.x(), bounds.y(), 0.0f), glm::vec3(bounds.width(), bounds.height(), 0.1f));
}
}
template <> int payloadGetLayer(const Overlay::Pointer& overlay) {
// MAgic number while we are defining the layering mechanism:
const int LAYER_2D = 2;
const int LAYER_3D_FRONT = 1;
const int LAYER_3D = 0;
if (overlay->is3D()) {
return (std::dynamic_pointer_cast<Base3DOverlay>(overlay)->getDrawInFront() ? LAYER_3D_FRONT : LAYER_3D);
} else {
return LAYER_2D;
}
}
template <> const ItemKey payloadGetKey(const Overlay::Pointer& overlay) {
if (overlay->is3D() && !std::dynamic_pointer_cast<Base3DOverlay>(overlay)->getDrawOnHUD()) {
if (std::dynamic_pointer_cast<Base3DOverlay>(overlay)->getDrawInFront()) {
return ItemKey::Builder().withTypeShape().withLayered().build();
} else {
return ItemKey::Builder::opaqueShape();
}
} else {
return ItemKey::Builder().withTypeShape().withViewSpace().build();
}
}
template <> int payloadGetLayer(const Overlay::Pointer& overlay) {
if (overlay->is3D()) {
auto overlay3D = std::dynamic_pointer_cast<Base3DOverlay>(overlay);
if (overlay3D->getDrawInFront()) {
return Item::LAYER_3D_FRONT;
} else if (overlay3D->getDrawHUDLayer()) {
return Item::LAYER_3D_HUD;
} else {
return Item::LAYER_3D;
}
} else {
return Item::LAYER_2D;
}
}
template <> const ItemKey payloadGetKey(const Overlay::Pointer& overlay) {
auto builder = ItemKey::Builder().withTypeShape();
if (overlay->is3D()) {
if (std::static_pointer_cast<Base3DOverlay>(overlay)->getDrawInFront()) {
builder.withLayered();
}
if (overlay->getAlphaPulse() != 0.0f || overlay->getAlpha() != 1.0f) {
builder.withTransparent();
}
} else {
builder.withViewSpace();
}
return builder.build();
}
template <> const ItemKey payloadGetKey(const Overlay::Pointer& overlay) {
auto builder = ItemKey::Builder().withTypeShape();
if (overlay->is3D()) {
auto overlay3D = std::static_pointer_cast<Base3DOverlay>(overlay);
if (overlay3D->getDrawInFront() || overlay3D->getDrawHUDLayer()) {
builder.withLayered();
}
if (overlay->isTransparent()) {
builder.withTransparent();
}
} else {
builder.withViewSpace();
}
if (!overlay->getVisible()) {
builder.withInvisible();
}
builder.withTagBits(render::ItemKey::TAG_BITS_0); // Only draw overlays in main view
return builder.build();
}