131 lines
5.1 KiB
C++
131 lines
5.1 KiB
C++
//----------------------------------------------------------------------------//
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// //
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// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
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// and distributed under the MIT License (MIT). //
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// //
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// Copyright (c) Guillaume Blanc //
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// //
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// Permission is hereby granted, free of charge, to any person obtaining a //
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// copy of this software and associated documentation files (the "Software"), //
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// to deal in the Software without restriction, including without limitation //
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// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
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// and/or sell copies of the Software, and to permit persons to whom the //
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// Software is furnished to do so, subject to the following conditions: //
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// //
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// The above copyright notice and this permission notice shall be included in //
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// all copies 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 //
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
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// DEALINGS IN THE SOFTWARE. //
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// //
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//----------------------------------------------------------------------------//
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#include "ozz/animation/offline/track_optimizer.h"
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#include <cassert>
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#include <cstddef>
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// Internal include file
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#define OZZ_INCLUDE_PRIVATE_HEADER // Allows to include private headers.
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#include "animation/offline/decimate.h"
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#include "ozz/base/maths/math_ex.h"
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#include "ozz/animation/offline/raw_track.h"
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// Needs runtime track to access TrackPolicy.
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#include "ozz/animation/runtime/track.h"
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namespace ozz {
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namespace animation {
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namespace offline {
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// Setup default values (favoring quality).
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TrackOptimizer::TrackOptimizer() : tolerance(1e-3f) { // 1 mm.
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}
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namespace {
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template <typename _KeyFrame>
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struct Adapter {
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typedef typename _KeyFrame::ValueType ValueType;
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typedef typename animation::internal::TrackPolicy<ValueType> Policy;
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Adapter() {}
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bool Decimable(const _KeyFrame& _key) const {
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// RawTrackInterpolation::kStep keyframes aren't optimized, as steps can't
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// be interpolated.
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return _key.interpolation != RawTrackInterpolation::kStep;
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}
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_KeyFrame Lerp(const _KeyFrame& _left, const _KeyFrame& _right,
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const _KeyFrame& _ref) const {
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assert(Decimable(_ref));
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const float alpha =
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(_ref.ratio - _left.ratio) / (_right.ratio - _left.ratio);
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assert(alpha >= 0.f && alpha <= 1.f);
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const _KeyFrame key = {_ref.interpolation, _ref.ratio,
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Policy::Lerp(_left.value, _right.value, alpha)};
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return key;
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}
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float Distance(const _KeyFrame& _a, const _KeyFrame& _b) const {
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return Policy::Distance(_a.value, _b.value);
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}
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};
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template <typename _Track>
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inline bool Optimize(float _tolerance, const _Track& _input, _Track* _output) {
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if (!_output) {
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return false;
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}
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// Reset output animation to default.
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*_output = _Track();
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// Validate animation.
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if (!_input.Validate()) {
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return false;
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}
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// Copy name
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_output->name = _input.name;
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// Optimizes.
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const Adapter<typename _Track::Keyframe> adapter;
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Decimate(_input.keyframes, adapter, _tolerance, &_output->keyframes);
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// Output animation is always valid though.
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return _output->Validate();
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}
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} // namespace
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bool TrackOptimizer::operator()(const RawFloatTrack& _input,
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RawFloatTrack* _output) const {
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return Optimize(tolerance, _input, _output);
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}
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bool TrackOptimizer::operator()(const RawFloat2Track& _input,
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RawFloat2Track* _output) const {
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return Optimize(tolerance, _input, _output);
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}
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bool TrackOptimizer::operator()(const RawFloat3Track& _input,
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RawFloat3Track* _output) const {
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return Optimize(tolerance, _input, _output);
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}
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bool TrackOptimizer::operator()(const RawFloat4Track& _input,
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RawFloat4Track* _output) const {
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return Optimize(tolerance, _input, _output);
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}
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bool TrackOptimizer::operator()(const RawQuaternionTrack& _input,
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RawQuaternionTrack* _output) const {
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return Optimize(1.f - std::cos(.5f * tolerance), _input, _output);
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}
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} // namespace offline
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} // namespace animation
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} // namespace ozz
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