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91 lines
4.2 KiB
C++
91 lines
4.2 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2021 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/base/translation/timelinetranslation.h>
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#include <openspace/documentation/documentation.h>
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#include <openspace/documentation/verifier.h>
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#include <openspace/util/updatestructures.h>
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#include <openspace/util/time.h>
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namespace {
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struct [[codegen::Dictionary(TimelineTranslation)]] Parameters {
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// A table of keyframes, with keys formatted as YYYY-MM-DDTHH:MM:SS and values
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// that are valid Translation objects
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std::map<std::string, ghoul::Dictionary> keyframes
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[[codegen::reference("core_transform_translation")]];
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};
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#include "timelinetranslation_codegen.cpp"
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} // namespace
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namespace openspace {
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documentation::Documentation TimelineTranslation::Documentation() {
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documentation::Documentation doc = codegen::doc<Parameters>();
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doc.id = "base_transform_translation_keyframe";
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return doc;
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}
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TimelineTranslation::TimelineTranslation(const ghoul::Dictionary& dictionary) {
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const Parameters p = codegen::bake<Parameters>(dictionary);
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for (const std::pair<const std::string, ghoul::Dictionary>& kf : p.keyframes) {
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const double t = Time::convertTime(kf.first);
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ghoul::mm_unique_ptr<Translation> translation =
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Translation::createFromDictionary(kf.second);
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if (translation) {
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_timeline.addKeyframe(t, std::move(translation));
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}
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}
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}
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glm::dvec3 TimelineTranslation::position(const UpdateData& data) const {
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const double now = data.time.j2000Seconds();
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using KeyframePointer = const Keyframe<ghoul::mm_unique_ptr<Translation>>*;
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KeyframePointer prev = _timeline.lastKeyframeBefore(now, true);
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KeyframePointer next = _timeline.firstKeyframeAfter(now, true);
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if (!prev && !next) {
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return glm::dvec3(0.0);
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}
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if (!prev) {
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prev = next;
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}
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if (!next) {
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next = prev;
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}
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const double prevTime = prev->timestamp;
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const double nextTime = next->timestamp;
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double t = 0.0;
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if (nextTime - prevTime > 0.0) {
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t = (now - prevTime) / (nextTime - prevTime);
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}
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return t * next->data->position(data) + (1.0 - t) * prev->data->position(data);
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}
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} // namespace openspace
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