opsu-dance/src/itdelatrisu/opsu/objects/curves/CatmullCurve.java

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/*
* opsu! - an open-source osu! client
* Copyright (C) 2014, 2015 Jeffrey Han
*
* opsu! is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* opsu! is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with opsu!. If not, see <http://www.gnu.org/licenses/>.
*/
package itdelatrisu.opsu.objects.curves;
import itdelatrisu.opsu.ErrorHandler;
import itdelatrisu.opsu.beatmap.HitObject;
import java.util.LinkedList;
import org.newdawn.slick.SlickException;
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/**
* Representation of Catmull Curve with equidistant points.
*
* @author fluddokt (https://github.com/fluddokt)
*/
public class CatmullCurve extends EqualDistanceMultiCurve {
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/**
* Constructor.
* @param hitObject the associated HitObject
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*/
public CatmullCurve(HitObject hitObject) {
super(hitObject);
LinkedList<CurveType> catmulls = new LinkedList<CurveType>();
int ncontrolPoints = hitObject.getSliderX().length + 1;
LinkedList<Vec2f> points = new LinkedList<Vec2f>(); // temporary list of points to separate different curves
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// repeat the first and last points as controls points
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// only if the first/last two points are different
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// aabb
// aabc abcc
// aabc abcd bcdd
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if (getX(0) != getX(1) || getY(0) != getY(1))
points.addLast(new Vec2f(getX(0), getY(0)));
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for (int i = 0; i < ncontrolPoints; i++) {
points.addLast(new Vec2f(getX(i), getY(i)));
if (points.size() >= 4) {
try {
catmulls.add(new CentripetalCatmullRom(points.toArray(new Vec2f[0])));
} catch (SlickException e) {
ErrorHandler.error(null, e, true);
}
points.removeFirst();
}
}
if (getX(ncontrolPoints - 1) != getX(ncontrolPoints - 2) ||
getY(ncontrolPoints - 1) != getY(ncontrolPoints - 2))
points.addLast(new Vec2f(getX(ncontrolPoints - 1), getY(ncontrolPoints - 1)));
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if (points.size() >= 4) {
try {
catmulls.add(new CentripetalCatmullRom(points.toArray(new Vec2f[0])));
} catch (SlickException e) {
ErrorHandler.error(null, e, true);
}
}
init(catmulls);
}
}