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package com.diozero.animation;
/*
* #%L
* Organisation: diozero
* Project: Device I/O Zero - Core
* Filename: AnimationInstance.java
*
* This file is part of the diozero project. More information about this project
* can be found at http://www.diozero.com/
* %%
* Copyright (C) 2016 - 2021 diozero
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.tinylog.Logger;
import com.diozero.animation.easing.EasingFunction;
import com.diozero.animation.easing.EasingFunctions;
import com.diozero.api.OutputDeviceInterface;
public class AnimationInstance {
private int durationMillis;
/**
* Array of values from 0.0 to 1.0 representing the beginning and end of the
* animation respectively (default [0, 1]);
*/
private float[] cuePoints;
private int[] cuePointsMillis;
/**
* A 1 or 2 dimensional array of device positions over time. See more on
* keyFrames below. (required)
*/
private List keyFrames;
private List> segmentValues;
public AnimationInstance() {
}
public AnimationInstance(int durationMillis, float[] cuePoints, List keyFrames) {
this.durationMillis = durationMillis;
this.cuePoints = cuePoints;
this.keyFrames = keyFrames;
}
void prepare(Animation animation) {
// Prepare the key frame values using delta if set
KeyFrame[] prev_kf_array = null;
for (KeyFrame[] key_frame_array : keyFrames) {
if (prev_kf_array != null) {
for (int tgt=0; tgt targets = animation.getTargets();
if (keyFrames.size() == 0 || keyFrames.get(0).length != targets.size()) {
throw new IllegalArgumentException("keyFrames length (" + keyFrames.get(0).length
+ ") must equal number of targets (" + targets.size() + ")");
}
cuePointsMillis = new int[cuePoints.length];
int segment = 0;
for (float cue_point : cuePoints) {
cuePointsMillis[segment++] = Math.round(cue_point * scaled_duration);
}
// List of segments, each segment is a list of steps with a value for
// each target
// Java generics make it very difficult to have arrays of Collections
segmentValues = new ArrayList<>(cuePoints.length - 1);
// Setup first step from key frame start values
List step_values = new ArrayList<>();
segmentValues.add(step_values);
float[] tgt_values = new float[targets.size()];
step_values.add(tgt_values);
for (int tgt = 0; tgt < targets.size(); tgt++) {
tgt_values[tgt] = keyFrames.get(0)[tgt].getValue();
}
for (segment = 1; segment < cuePoints.length; segment++) {
Logger.info("Segment={}", Integer.valueOf(segment));
long time = 0;
time += animation.getPeriodMs();
long seg_duration = cuePointsMillis[segment] - cuePointsMillis[segment - 1];
while (time < seg_duration) {
// For each target
tgt_values = new float[targets.size()];
step_values.add(tgt_values);
for (int tgt = 0; tgt < targets.size(); tgt++) {
EasingFunction kf_ef = keyFrames.get(segment-1)[tgt].getEasingFunction();
EasingFunction easing_func = kf_ef == null ? animation.getEasingFunction() : kf_ef;
AnimationInstance.KeyFrame begin = keyFrames.get(segment - 1)[tgt];
float delta = keyFrames.get(segment)[tgt].getValue() - begin.getValue();
tgt_values[tgt] = easing_func.ease(time, begin.getValue(), delta, seg_duration);
}
time += animation.getPeriodMs();
}
// Add the segment finish state
tgt_values = new float[targets.size()];
step_values.add(tgt_values);
for (int tgt = 0; tgt < targets.size(); tgt++) {
tgt_values[tgt] = keyFrames.get(segment)[tgt].getValue();
}
if (segment < cuePoints.length - 1) {
step_values = new ArrayList<>();
segmentValues.add(step_values);
Logger.info("Added to segmentValues, size {}", Integer.valueOf(segmentValues.size()));
}
}
}
public int getDurationMillis() {
return durationMillis;
}
public float[] getCuePoints() {
return cuePoints;
}
public List getKeyFrames() {
return keyFrames;
}
public List> getSegmentValues() {
return segmentValues;
}
@Override
public String toString() {
return "AnimationInstance [duration=" + durationMillis + ", cuePoints=" + Arrays.toString(cuePoints) + ", keyFrames="
+ keyFrames + "]";
}
public static class KeyFrame {
private float value;
private Float delta;
private boolean change;
private String easing;
public KeyFrame() {
}
public KeyFrame(float value) {
setValue(value);
}
public KeyFrame(boolean change) {
setChange(change);
}
public float getValue() {
return value;
}
public float getValue(float previousValue) {
if (! change) {
return previousValue;
}
if (delta == null) {
return value;
}
return value + delta.floatValue();
}
public KeyFrame setValue(float value) {
change = true;
this.value = value;
return this;
}
public Float getDelta() {
return delta;
}
public KeyFrame setDelta(float delta) {
change = true;
this.delta = Float.valueOf(delta);
return this;
}
public boolean isChange() {
return change;
}
public KeyFrame setChange(boolean change) {
this.change = change;
return this;
}
public String getEasing() {
return easing;
}
public KeyFrame setEasing(String easing) {
this.easing = easing;
return this;
}
public EasingFunction getEasingFunction() {
return EasingFunctions.forName(easing);
}
@Override
public String toString() {
return "KeyFrame [value=" + value + ", delta=" + delta + ", change=" + change + ", easing=" + easing + "]";
}
public static List fromValues(float[][] values) {
List key_frames = new ArrayList<>();
for (float[] kf_values : values) {
KeyFrame[] kf_array = new KeyFrame[kf_values.length];
for (int i=0; i
