blob: 420d596c6f54b8938863f075012b8e9c0e1fe985 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef INK_STROKE_MODELER_INTERNAL_PREDICTION_STROKE_END_PREDICTOR_H_
#define INK_STROKE_MODELER_INTERNAL_PREDICTION_STROKE_END_PREDICTOR_H_
#include <vector>
#include "absl/types/optional.h"
#include "ink_stroke_modeler/internal/internal_types.h"
#include "ink_stroke_modeler/internal/prediction/input_predictor.h"
#include "ink_stroke_modeler/params.h"
#include "ink_stroke_modeler/types.h"
namespace ink {
namespace stroke_model {
// This class constructs a prediction using the same PositionModeler class as
// the SpringBasedModeler, fixing the anchor position and allowing the stroke to
// "catch up". The way the prediction is constructed is very similar to how the
// SpringBasedModeler models the end of a stroke.
class StrokeEndPredictor : public InputPredictor {
public:
explicit StrokeEndPredictor(
const PositionModelerParams &position_modeler_params,
const SamplingParams &sampling_params)
: position_modeler_params_(position_modeler_params),
sampling_params_(sampling_params) {}
void Reset() override { last_position_ = absl::nullopt; }
void Update(Vec2 position, Time time) override;
std::vector<TipState> ConstructPrediction(
const TipState &last_state) const override;
private:
PositionModelerParams position_modeler_params_;
SamplingParams sampling_params_;
absl::optional<Vec2> last_position_;
};
} // namespace stroke_model
} // namespace ink
#endif // INK_STROKE_MODELER_INTERNAL_PREDICTION_STROKE_END_PREDICTOR_H_
|
