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https://github.com/harfang3d/harfang3d.git
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158 lines
4.8 KiB
C++
158 lines
4.8 KiB
C++
// HARFANG(R) Copyright (C) 2021 Emmanuel Julien, NWNC HARFANG. Released under GPL/LGPL/Commercial Licence, see licence.txt for details.
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#include "engine/animation.h"
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#include "engine/to_json.h"
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namespace hg {
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template <typename T> void SaveAnimKey(json &js, const AnimKeyT<T> &key) { js = {{"t", key.t}, {"v", key.v}}; }
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template <typename T> void SaveAnimKey(json &js, const AnimKeyHermiteT<T> &key) {
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js = {{"t", key.t}, {"v", key.v}, {"tension", key.tension}, {"bias", key.bias}};
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}
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template <typename Track> void SaveAnimTrack(json &js, const Track &track) {
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js["target"] = track.target;
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if (!track.keys.empty()) {
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auto &keys_json = js["keys"];
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for (const auto &key : track.keys) {
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json key_json;
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SaveAnimKey(key_json, key);
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keys_json.push_back(std::move(key_json));
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}
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}
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}
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template <typename Track> void SaveAnimTracks(json &js, const std::string &name, const std::vector<Track> &tracks) {
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if (!tracks.empty()) {
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auto &tracks_js = js[name];
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for (const auto &track : tracks) {
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json track_js;
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SaveAnimTrack(track_js, track);
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tracks_js.push_back(std::move(track_js));
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}
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}
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}
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void SaveInstanceAnimTrack(json &js, const AnimTrackT<InstanceAnimKey> &track) {
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if (!track.keys.empty()) {
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auto &keys_js = js["instance_anim"]["keys"];
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for (const auto &key : track.keys)
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keys_js.push_back({{"t", key.t}, {"name", key.v.anim_name}, {"loop", key.v.loop_mode}, {"scale", key.v.t_scale}});
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}
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}
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void SaveAnimToJson(json &js, const Anim &anim) {
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js["t_start"] = anim.t_start;
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js["t_end"] = anim.t_end;
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json flags = json::array();
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if (anim.flags & AF_UseQuaternionForRotation)
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flags.push_back("UseQuaternionForRotation");
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js["flags"] = flags;
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SaveAnimTracks(js, "bool", anim.bool_tracks);
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SaveAnimTracks(js, "int", anim.int_tracks);
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SaveAnimTracks(js, "float", anim.float_tracks);
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SaveAnimTracks(js, "vec2", anim.vec2_tracks);
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SaveAnimTracks(js, "vec3", anim.vec3_tracks);
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SaveAnimTracks(js, "vec4", anim.vec4_tracks);
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SaveAnimTracks(js, "quat", anim.quat_tracks);
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SaveAnimTracks(js, "color", anim.color_tracks);
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SaveAnimTracks(js, "string", anim.string_tracks);
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SaveInstanceAnimTrack(js, anim.instance_anim_track);
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}
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//
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template <typename T> void LoadAnimKey(const json &js, AnimKeyT<T> &key) {
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key.t = js.at("t").get<time_ns>();
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key.v = js.at("v").get<T>();
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}
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template <typename T> void LoadAnimKey(const json &js, AnimKeyHermiteT<T> &key) {
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key.t = js.at("t").get<time_ns>();
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key.v = js.at("v").get<T>();
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key.tension = js.at("tension").get<float>();
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key.bias = js.at("bias").get<float>();
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}
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template <typename Track> void LoadAnimTrack(const json &js, Track &track) {
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track.target = js.at("target").get<std::string>();
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const auto &keys_js = js.find("keys");
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if (keys_js != std::end(js)) {
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track.keys.resize(keys_js->size());
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for (size_t i = 0; i < keys_js->size(); ++i)
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LoadAnimKey(keys_js->at(i), track.keys[i]);
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}
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SortAnimTrackKeys(track);
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}
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void LoadInstanceAnimTrack(const json &js, AnimTrackT<InstanceAnimKey> &track) {
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const auto &track_js = js.find("instance_anim");
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if (track_js == std::end(js))
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return; // no such track
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const auto &keys_js = track_js->find("keys");
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if (keys_js != std::end(*track_js)) {
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track.keys.resize(keys_js->size());
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for (size_t i = 0; i < keys_js->size(); ++i) {
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auto &key_js = keys_js->at(i);
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auto &key = track.keys[i];
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key.t = key_js.at("t").get<time_ns>();
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key.v.anim_name = key_js.at("name").get<std::string>();
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key.v.loop_mode = key_js.at("loop").get<AnimLoopMode>();
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key.v.t_scale = key_js.at("scale").get<float>();
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}
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}
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SortAnimTrackKeys(track);
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}
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template <typename Track> void LoadAnimTracks(const json &js, const std::string &name, std::vector<Track> &tracks) {
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const auto &tracks_js = js.find(name);
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if (tracks_js == std::end(js))
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return; // no such group
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tracks.resize(tracks_js->size());
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for (size_t i = 0; i < tracks_js->size(); ++i)
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LoadAnimTrack(tracks_js->at(i), tracks[i]);
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}
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void LoadAnimFromJson(const json &js, Anim &anim) {
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anim.t_start = js.at("t_start").get<time_ns>();
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anim.t_end = js.at("t_end").get<time_ns>();
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LoadAnimTracks(js, "bool", anim.bool_tracks);
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LoadAnimTracks(js, "int", anim.int_tracks);
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LoadAnimTracks(js, "float", anim.float_tracks);
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LoadAnimTracks(js, "vec2", anim.vec2_tracks);
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LoadAnimTracks(js, "vec3", anim.vec3_tracks);
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LoadAnimTracks(js, "vec4", anim.vec4_tracks);
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LoadAnimTracks(js, "quat", anim.quat_tracks);
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LoadAnimTracks(js, "color", anim.color_tracks);
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LoadAnimTracks(js, "string", anim.string_tracks);
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LoadInstanceAnimTrack(js, anim.instance_anim_track);
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auto i = js.find("flags");
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if (i != std::end(js)) {
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for (auto j : *i)
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if (j == "UseQuaternionForRotation")
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anim.flags |= AF_UseQuaternionForRotation;
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} else {
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// legacy fallback
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if (!anim.quat_tracks.empty()) // any quaternion track takes precedence
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anim.flags |= AF_UseQuaternionForRotation;
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}
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MigrateLegacyAnimationTracks(anim);
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}
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} // namespace hg
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