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+/**
+ * @file llreflectionmapmanager.cpp
+ * @brief LLReflectionMapManager class implementation
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llreflectionmapmanager.h"
+#include "llviewercamera.h"
+
+LLReflectionMapManager::LLReflectionMapManager()
+{
+
+}
+
+struct CompareReflectionMapDistance
+{
+
+};
+
+
+struct CompareProbeDistance
+{
+ bool operator()(const LLReflectionMap& lhs, const LLReflectionMap& rhs)
+ {
+ return lhs.mDistance < rhs.mDistance;
+ }
+};
+
+// helper class to seed octree with probes
+void LLReflectionMapManager::update()
+{
+ LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY;
+
+ // naively drop probes every 16m as we move the camera around for now
+ // later, use LLSpatialPartition to manage probes
+ const F32 PROBE_SPACING = 16.f;
+ const U32 MAX_PROBES = 8;
+
+ LLVector4a camera_pos;
+ camera_pos.load3(LLViewerCamera::instance().getOrigin().mV);
+
+ for (auto& probe : mProbes)
+ {
+ LLVector4a d;
+ d.setSub(camera_pos, probe.mOrigin);
+ probe.mDistance = d.getLength3().getF32();
+ }
+
+ if (mProbes.empty() || mProbes[0].mDistance > PROBE_SPACING)
+ {
+ addProbe(LLViewerCamera::instance().getOrigin());
+ }
+
+ // update distance to camera for all probes
+ std::sort(mProbes.begin(), mProbes.end(), CompareProbeDistance());
+
+ if (mProbes.size() > MAX_PROBES)
+ {
+ mProbes.resize(MAX_PROBES);
+ }
+}
+
+void LLReflectionMapManager::addProbe(const LLVector3& pos)
+{
+ LLReflectionMap probe;
+ probe.update(pos, 1024);
+ mProbes.push_back(probe);
+}
+
+void LLReflectionMapManager::getReflectionMaps(std::vector<LLReflectionMap*>& maps)
+{
+ // just null out for now
+ U32 i = 0;
+ for (i = 0; i < maps.size() && i < mProbes.size(); ++i)
+ {
+ maps[i] = &(mProbes[i]);
+ }
+
+ for (++i; i < maps.size(); ++i)
+ {
+ maps[i] = nullptr;
+ }
+}
+