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More curve types

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Catmull curves
Line Curves(half assed)
Curve refactor
#73 near 0 length sliders
This commit is contained in:
fd
2015-04-12 10:25:03 -04:00
parent 13d383463f
commit 12e70002d6
11 changed files with 444 additions and 182 deletions
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136
src/itdelatrisu/opsu/objects/curves/LinearBezier.java
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@@ -18,15 +18,10 @@
package itdelatrisu.opsu.objects.curves;
import itdelatrisu.opsu.GameImage;
import itdelatrisu.opsu.OsuHitObject;
import itdelatrisu.opsu.Utils;
import java.util.Iterator;
import java.util.LinkedList;
import org.newdawn.slick.Color;
import org.newdawn.slick.Image;
/**
* Representation of a Bezier curve with equidistant points.
@@ -34,34 +29,32 @@ import org.newdawn.slick.Image;
*
* @author fluddokt (https://github.com/fluddokt)
*/
public class LinearBezier extends Curve {
/** The angles of the first and last control points for drawing. */
private float startAngle, endAngle;
/** List of Bezier curves in the set of points. */
private LinkedList<Bezier2> beziers = new LinkedList<Bezier2>();
/** Points along the curve at equal distance. */
private Vec2f[] curve;
/** The number of points along the curve. */
private int ncurve;
public class LinearBezier extends EqualDistanceMultiCurve {
/**
* Constructor.
* @param hitObject the associated OsuHitObject
* @param color the color of this curve
*/
public LinearBezier(OsuHitObject hitObject, Color color) {
public LinearBezier(OsuHitObject hitObject, Color color, boolean line) {
super(hitObject, color);
LinkedList<CurveType> beziers = new LinkedList<CurveType>();
// a b c - c d - d e f g
// ab bc cd de ef fg
// splits points into different Beziers if has the same points (red points)
int controlPoints = hitObject.getSliderX().length + 1;
LinkedList<Vec2f> points = new LinkedList<Vec2f>(); // temporary list of points to separate different Bezier curves
Vec2f lastPoi = null;
for (int i = 0; i < controlPoints; i++) {
Vec2f tpoi = new Vec2f(getX(i), getY(i));
if (lastPoi != null && tpoi.equals(lastPoi)) {
if (line) {
if(lastPoi != null) {
points.add(tpoi);
beziers.add(new Bezier2(points.toArray(new Vec2f[0])));
points.clear();
}
} else if (lastPoi != null && tpoi.equals(lastPoi)) {
if (points.size() >= 2)
beziers.add(new Bezier2(points.toArray(new Vec2f[0])));
points.clear();
@@ -69,113 +62,14 @@ public class LinearBezier extends Curve {
points.add(tpoi);
lastPoi = tpoi;
}
if (points.size() < 2) {
if (line || points.size() < 2) {
// trying to continue Bezier with less than 2 points
// probably ending on a red point, just ignore it
} else {
beziers.add(new Bezier2(points.toArray(new Vec2f[0])));
points.clear();
}
// find the length of all beziers
// int totalDistance = 0;
// for (Bezier2 bez : beziers) {
// totalDistance += bez.totalDistance();
// }
// now try to creates points the are equidistant to each other
this.ncurve = (int) (hitObject.getPixelLength() / 5f);
this.curve = new Vec2f[ncurve + 1];
float distanceAt = 0;
Iterator<Bezier2> iter = beziers.iterator();
int curPoint = 0;
Bezier2 curBezier = iter.next();
Vec2f lastCurve = curBezier.getCurve()[0];
float lastDistanceAt = 0;
// length of Bezier should equal pixel length (in 640x480)
float pixelLength = hitObject.getPixelLength() * OsuHitObject.getXMultiplier();
// for each distance, try to get in between the two points that are between it
for (int i = 0; i < ncurve + 1; i++) {
int prefDistance = (int) (i * pixelLength / ncurve);
while (distanceAt < prefDistance) {
lastDistanceAt = distanceAt;
lastCurve = curBezier.getCurve()[curPoint];
distanceAt += curBezier.getCurveDistances()[curPoint++];
if (curPoint >= curBezier.points()) {
if (iter.hasNext()) {
curBezier = iter.next();
curPoint = 0;
} else {
curPoint = curBezier.points() - 1;
if (lastDistanceAt == distanceAt) {
// out of points even though the preferred distance hasn't been reached
break;
}
}
}
}
Vec2f thisCurve = curBezier.getCurve()[curPoint];
// interpolate the point between the two closest distances
if (distanceAt - lastDistanceAt > 1) {
float t = (prefDistance - lastDistanceAt) / (distanceAt - lastDistanceAt);
curve[i] = new Vec2f(lerp(lastCurve.x, thisCurve.x, t), lerp(lastCurve.y, thisCurve.y, t));
} else
curve[i] = thisCurve;
}
// if (hitObject.getRepeatCount() > 1) {
Vec2f c1 = curve[0];
int cnt = 1;
Vec2f c2 = curve[cnt++];
while (cnt <= ncurve && c2.cpy().sub(c1).len() < 1)
c2 = curve[cnt++];
this.startAngle = (float) (Math.atan2(c2.y - c1.y, c2.x - c1.x) * 180 / Math.PI);
c1 = curve[ncurve];
cnt = ncurve - 1;
c2 = curve[cnt--];
while (cnt >= 0 && c2.cpy().sub(c1).len() < 1)
c2 = curve[cnt--];
this.endAngle = (float) (Math.atan2(c2.y - c1.y, c2.x - c1.x) * 180 / Math.PI);
// }
init(beziers);
}
@Override
public float[] pointAt(float t) {
float indexF = t * ncurve;
int index = (int) indexF;
if (index >= ncurve) {
Vec2f poi = curve[ncurve];
return new float[] { poi.x, poi.y };
} else {
Vec2f poi = curve[index];
Vec2f poi2 = curve[index + 1];
float t2 = indexF - index;
return new float[] {
lerp(poi.x, poi2.x, t2),
lerp(poi.y, poi2.y, t2)
};
}
}
@Override
public void draw(Color color) {
Image hitCircle = GameImage.HITCIRCLE.getImage();
Image hitCircleOverlay = GameImage.HITCIRCLE_OVERLAY.getImage();
for (int i = curve.length - 2; i >= 0; i--)
hitCircleOverlay.drawCentered(curve[i].x, curve[i].y, Utils.COLOR_WHITE_FADE);
for (int i = curve.length - 2; i >= 0; i--)
hitCircle.drawCentered(curve[i].x, curve[i].y, color);
}
@Override
public float getEndAngle() { return endAngle; }
@Override
public float getStartAngle() { return startAngle; }
}