113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
//
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// KRLODSet.cpp
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// KREngine
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//
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// Created by Kearwood Gilbert on 2012-12-06.
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// Copyright (c) 2012 Kearwood Software. All rights reserved.
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//
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#include "KRLODSet.h"
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#include "KRLODGroup.h"
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#include "KRContext.h"
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KRLODSet::KRLODSet(KRScene &scene, std::string name) : KRNode(scene, name)
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{
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}
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KRLODSet::~KRLODSet()
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{
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}
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std::string KRLODSet::getElementName() {
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return "lod_set";
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}
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tinyxml2::XMLElement *KRLODSet::saveXML( tinyxml2::XMLNode *parent)
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{
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tinyxml2::XMLElement *e = KRNode::saveXML(parent);
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return e;
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}
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void KRLODSet::loadXML(tinyxml2::XMLElement *e)
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{
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KRNode::loadXML(e);
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}
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void KRLODSet::updateLODVisibility(const KRViewport &viewport)
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{
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if(m_lod_visible >= LOD_VISIBILITY_PRESTREAM) {
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KRLODGroup *new_active_lod_group = NULL;
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// Upgrade and downgrade LOD groups as needed
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for(std::set<KRNode *>::iterator itr=m_childNodes.begin(); itr != m_childNodes.end(); ++itr) {
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KRLODGroup *lod_group = dynamic_cast<KRLODGroup *>(*itr);
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assert(lod_group != NULL);
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LodVisibility group_lod_visibility = KRMIN(lod_group->calcLODVisibility(viewport), m_lod_visible);
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if(group_lod_visibility == LOD_VISIBILITY_VISIBLE) {
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new_active_lod_group = lod_group;
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}
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lod_group->setLODVisibility(group_lod_visibility);
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}
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/*
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// FINDME, TODO, HACK - Disabled streamer delayed LOD load due to performance issues:
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bool streamer_ready = false;
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if(new_active_lod_group == NULL) {
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streamer_ready = true;
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} else if(new_active_lod_group->getStreamLevel(viewport) >= kraken_stream_level::STREAM_LEVEL_IN_LQ) {
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streamer_ready = true;
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}
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*/
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bool streamer_ready = true;
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if(streamer_ready) {
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// Upgrade and downgrade LOD groups as needed
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for(std::set<KRNode *>::iterator itr=m_childNodes.begin(); itr != m_childNodes.end(); ++itr) {
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KRLODGroup *lod_group = dynamic_cast<KRLODGroup *>(*itr);
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assert(lod_group != NULL);
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LodVisibility group_lod_visibility = KRMIN(lod_group->calcLODVisibility(viewport), m_lod_visible);
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lod_group->setLODVisibility(group_lod_visibility);
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}
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}
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KRNode::updateLODVisibility(viewport);
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}
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}
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void KRLODSet::setLODVisibility(KRNode::LodVisibility lod_visibility)
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{
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if(lod_visibility == LOD_VISIBILITY_HIDDEN) {
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KRNode::setLODVisibility(lod_visibility);
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} else if(m_lod_visible != lod_visibility) {
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// Don't automatically recurse into our children, as only one of those will be activated, by updateLODVisibility
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if(m_lod_visible == LOD_VISIBILITY_HIDDEN && lod_visibility >= LOD_VISIBILITY_PRESTREAM) {
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getScene().notify_sceneGraphCreate(this);
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}
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m_lod_visible = lod_visibility;
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}
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}
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kraken_stream_level KRLODSet::getStreamLevel(const KRViewport &viewport)
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{
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KRLODGroup *new_active_lod_group = NULL;
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// Upgrade and downgrade LOD groups as needed
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for(std::set<KRNode *>::iterator itr=m_childNodes.begin(); itr != m_childNodes.end(); ++itr) {
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KRLODGroup *lod_group = dynamic_cast<KRLODGroup *>(*itr);
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assert(lod_group != NULL);
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if(lod_group->calcLODVisibility(viewport) == LOD_VISIBILITY_VISIBLE) {
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new_active_lod_group = lod_group;
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}
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}
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if(new_active_lod_group) {
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return new_active_lod_group->getStreamLevel(viewport);
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} else {
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return kraken_stream_level::STREAM_LEVEL_IN_HQ;
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}
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}
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