using System;
using System.Collections.Generic;
namespace Assistance {
public class InputModifierInterpolation: InputManager.Modifier {
public readonly double precision;
public readonly double precisionSqr;
public InputModifierInterpolation(double precision = 1.0) {
this.precision = Math.Max(precision, Geometry.precision);
this.precisionSqr = this.precision*this.precision;
}
public void addSegment(Track track, Track.WayPoint p0, Track.WayPoint p1) {
if ((p1.point.position - p0.point.position).lenSqr() <= precisionSqr)
{ track.points.Add(p1); return; }
Track.WayPoint p = track.modifier.calcWayPoint(0.5*(p0.originalIndex + p1.originalIndex));
addSegment(track, p0, p);
addSegment(track, p, p1);
}
public override List<Track> modify(Track track, InputManager.KeyPoint keyPoint, List<Track> outTracks) {
if (track.handler == null) {
track.handler = new Track.Handler(this, track);
track.handler.tracks.Add(new Track( new Track.Modifier(track.handler) ));
}
Track subTrack = track.handler.tracks[0];
Modifier modifier = (Modifier)subTrack.modifier;
outTracks.Add(subTrack);
if (!track.isChanged)
return;
// remove points
int start = track.points.Count - track.wayPointsAdded;
if (start < 0) start = 0;
int subStart = subTrack.floorIndex(subTrack.indexByOriginalIndex(start));
if (subTrack.points.Count < subStart) {
subTrack.points.RemoveRange(subStart, subTrack.points.Count - subStart);
subTrack.wayPointsRemoved += subTrack.points.Count - subStart;
}
// add points
Track.WayPoint p0 = track.getWayPoint(start - 1);
for(int i = start; i < track.points.Count; ++i) {
Track.WayPoint p1 = track.points[i];
addSegment(subTrack, p0, p1);
p0 = p1;
}
subTrack.wayPointsAdded += subTrack.points.Count - subStart;
}
}
}