104 lines
5.0 KiB
C
104 lines
5.0 KiB
C
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//----------------------------------------------------------------------------//
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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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#ifndef OZZ_OZZ_ANIMATION_OFFLINE_ANIMATION_OPTIMIZER_H_
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#define OZZ_OZZ_ANIMATION_OFFLINE_ANIMATION_OPTIMIZER_H_
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#include "ozz/base/containers/map.h"
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namespace ozz {
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namespace animation {
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// Forward declare runtime skeleton type.
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class Skeleton;
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namespace offline {
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// Forward declare offline animation type.
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struct RawAnimation;
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// Defines the class responsible of optimizing an offline raw animation
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// instance. Optimization is performed using a key frame reduction technique. It
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// deciamtes redundant / interpolable key frames, within error tolerances given
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// as input. The optimizer takes into account for each joint the error
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// generated on its whole child hierarchy. This allows for example to take into
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// consideration the error generated on a finger when optimizing the shoulder. A
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// small error on the shoulder can be magnified when propagated to the finger
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// indeed.
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// It's possible to override optimization settings for a joint. This implicitely
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// have an effect on the whole chain, up to that joint. This allows for example
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// to have aggressive optimization for a whole skeleton, except for the chain
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// that leads to the hand if user wants it to be precise. Default optimization
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// tolerances are set in order to favor quality over runtime performances and
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// memory footprint.
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class AnimationOptimizer {
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public:
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// Initializes the optimizer with default tolerances (favoring quality).
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AnimationOptimizer();
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// Optimizes _input using *this parameters. _skeleton is required to evaluate
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// optimization error along joint hierarchy (see hierarchical_tolerance).
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// Returns true on success and fills _output animation with the optimized
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// version of _input animation.
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// *_output must be a valid RawAnimation instance.
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// Returns false on failure and resets _output to an empty animation.
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// See RawAnimation::Validate() for more details about failure reasons.
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bool operator()(const RawAnimation& _input, const Skeleton& _skeleton,
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RawAnimation* _output) const;
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// Optimization settings.
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struct Setting {
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// Default settings
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Setting()
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: tolerance(1e-3f), // 1mm
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distance(1e-1f) // 10cm
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{}
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Setting(float _tolerance, float _distance)
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: tolerance(_tolerance), distance(_distance) {}
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// The maximum error that an optimization is allowed to generate on a whole
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// joint hierarchy.
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float tolerance;
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// The distance (from the joint) at which error is measured (if bigger that
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// joint hierarchy). This allows to emulate effect on skinning.
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float distance;
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};
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// Golbal optimization settings. These settings apply to all joints of the
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// hierarchy, unless overriden by joint specific settings.
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Setting setting;
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// Per joint override of optimization settings.
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typedef ozz::map<int, Setting> JointsSetting;
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JointsSetting joints_setting_override;
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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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#endif // OZZ_OZZ_ANIMATION_OFFLINE_ANIMATION_OPTIMIZER_H_
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