@Override
protected void processRoofEditPoints(final List<? extends ReadOnlyVector3> wallUpperPoints) {
final ReadOnlyVector3 center = getCenter();
if (recalculateEditPoints) {
recalculateEditPoints = false;
points.get(0).set(toRelative(center));
// if (editPointIndex == -1) {
recalculateEditPoints = false;
points.add(toRelative(getCenter()));
final Vector3 hipDirection =
container.getAbsPoint(2).subtractLocal(container.getAbsPoint(0)).normalizeLocal();
Vector3 point1 =
findFarthestIntersection(
wallUpperPoints, center, center.add(hipDirection.multiply(-1000, null), null));
Vector3 point2 =
findFarthestIntersection(
wallUpperPoints, center, center.add(hipDirection.multiply(1000, null), null));
if (point1 == null) point1 = center.clone();
if (point2 == null) point2 = center.clone();
point1.addLocal(hipDirection.multiply(point1.distance(center) * 0.5, null));
point2.addLocal(hipDirection.multiply(-point2.distance(center) * 0.5, null));
points.get(1).set(toRelative(point1));
points.get(2).set(toRelative(point2));
computeHeight(wallUpperPoints);
applyHeight();
// }
} else {
applyHeight();
}
}
@Override
public void apply(final double dt, final Particle particle, final int index) {
if (_wanderRadius == 0 && _wanderDistance == 0 && _wanderJitter == 0) {
return;
}
final Vector3 wanderTarget = _wanderTargets.get(index);
wanderTarget.addLocal(calcNewJitter(), calcNewJitter(), calcNewJitter());
wanderTarget.normalizeLocal();
wanderTarget.multiplyLocal(_wanderRadius);
_workVect.set(particle.getVelocity()).normalizeLocal().multiplyLocal(_wanderDistance);
_workVect.addLocal(wanderTarget).normalizeLocal();
_workVect.multiplyLocal(particle.getVelocity().length());
particle.getVelocity().set(_workVect);
}
/**
* update position (using current position and velocity), color (interpolating between start and
* end color), size (interpolating between start and end size), spin (using parent's spin speed)
* and current age of particle. If this particle's age is greater than its lifespan, it is set to
* status DEAD.
*
* <p>Note that this only changes the parameters of the Particle, not the geometry the particle is
* associated with.
*
* @param secondsPassed number of seconds passed since last update.
* @return true if this particle is not ALIVE (in other words, if it is ready to be reused.)
*/
public boolean updateAndCheck(final double secondsPassed) {
if (status != Status.Alive) {
return true;
}
currentAge += secondsPassed * 1000; // add ms time to age
if (currentAge > lifeSpan) {
killParticle();
return true;
}
final Vector3 temp = Vector3.fetchTempInstance();
_position.addLocal(_velocity.multiply(secondsPassed * 1000f, temp));
Vector3.releaseTempInstance(temp);
// get interpolated values from appearance ramp:
parent.getRamp().getValuesAtAge(currentAge, lifeSpan, currColor, values, parent);
// interpolate colors
final int verts = ParticleSystem.getVertsForParticleType(type);
for (int x = 0; x < verts; x++) {
BufferUtils.setInBuffer(
currColor, parent.getParticleGeometry().getMeshData().getColorBuffer(), startIndex + x);
}
// check for tex animation
final int newTexIndex = parent.getTexAnimation().getTexIndexAtAge(currentAge, lifeSpan, parent);
// Update tex coords if applicable
if (currentTexIndex != newTexIndex) {
// Only supported in Quad type for now.
if (ParticleType.Quad.equals(parent.getParticleType())) {
// determine side
final float side = (float) Math.sqrt(parent.getTexQuantity());
int index = newTexIndex;
if (index >= parent.getTexQuantity()) {
index %= parent.getTexQuantity();
}
// figure row / col
final float row = side - (int) (index / side) - 1;
final float col = index % side;
// set texcoords
final float sU = col / side, eU = (col + 1) / side;
final float sV = row / side, eV = (row + 1) / side;
final FloatBuffer texs =
parent.getParticleGeometry().getMeshData().getTextureCoords(0).getBuffer();
texs.position(startIndex * 2);
texs.put(eU).put(sV);
texs.put(eU).put(eV);
texs.put(sU).put(eV);
texs.put(sU).put(sV);
texs.clear();
}
currentTexIndex = newTexIndex;
}
return false;
}
private BoundingVolume merge(
final double otherRadius, final ReadOnlyVector3 otherCenter, final BoundingSphere store) {
// check for infinite bounds... is so, return infinite bounds with center at origin
if (Double.isInfinite(otherRadius) || Double.isInfinite(getRadius())) {
store.setCenter(Vector3.ZERO);
store.setRadius(Double.POSITIVE_INFINITY);
return store;
}
final Vector3 diff = otherCenter.subtract(_center, _compVect1);
final double lengthSquared = diff.lengthSquared();
final double radiusDiff = otherRadius - getRadius();
final double radiusDiffSqr = radiusDiff * radiusDiff;
// if one sphere wholly contains the other
if (radiusDiffSqr >= lengthSquared) {
// if we contain the other
if (radiusDiff <= 0.0) {
store.setCenter(_center);
store.setRadius(_radius);
return store;
}
// else the other contains us
else {
store.setCenter(otherCenter);
store.setRadius(otherRadius);
return store;
}
}
// distance between sphere centers
final double length = Math.sqrt(lengthSquared);
// init a center var using our center
final Vector3 rCenter = _compVect2;
rCenter.set(_center);
// if our centers are at least a tiny amount apart from each other...
if (length > MathUtils.EPSILON) {
// place us between the two centers, weighted by radii
final double coeff = (length + radiusDiff) / (2.0 * length);
rCenter.addLocal(diff.multiplyLocal(coeff));
}
// set center on our resulting bounds
store.setCenter(rCenter);
// Set radius
store.setRadius(0.5 * (length + getRadius() + otherRadius));
return store;
}
@Override
public void apply(final double dt, final Particle particle, final int index) {
final Vector3 pVelocity = particle.getVelocity();
// determine if the particle is in the inner or outer zone
final double pDist = particle.getPosition().distanceSquared(_swarmPoint);
final Vector3 workVect = Vector3.fetchTempInstance();
final Vector3 workVect2 = Vector3.fetchTempInstance();
final Matrix3 workMat = Matrix3.fetchTempInstance();
workVect.set(_swarmPoint).subtractLocal(particle.getPosition()).normalizeLocal();
workVect2.set(pVelocity).normalizeLocal();
if (pDist > _swarmRangeSQ) {
// IN THE OUTER ZONE...
// Determine if the angle between particle velocity and a vector to
// the swarmPoint is less than the accepted deviance
final double angle = workVect.smallestAngleBetween(workVect2);
if (angle < _deviance) {
// if it is, increase the speed speedBump over time
if (pVelocity.lengthSquared() < maxSpeedSQ) {
final double change = _speedBump * dt;
workVect2.multiplyLocal(change); // where workVector2 = pVelocity.normalizeLocal()
pVelocity.addLocal(workVect2);
}
} else {
final Vector3 axis = workVect2.crossLocal(workVect);
// if it is not, shift the velocity to bring it back in line
if ((Double.doubleToLongBits(pVelocity.lengthSquared()) & 0x1d) != 0) {
workMat.fromAngleAxis(_turnSpeed * dt, axis);
} else {
workMat.fromAngleAxis(-_turnSpeed * dt, axis);
}
workMat.applyPost(pVelocity, pVelocity);
}
} else {
final Vector3 axis = workVect2.crossLocal(workVect);
// IN THE INNER ZONE...
// Alter the heading based on how fast we are going
if ((index & 0x1f) != 0) {
workMat.fromAngleAxis(_turnSpeed * dt, axis);
} else {
workMat.fromAngleAxis(-_turnSpeed * dt, axis);
}
workMat.applyPost(pVelocity, pVelocity);
}
Vector3.releaseTempInstance(workVect);
Vector3.releaseTempInstance(workVect2);
Matrix3.releaseTempInstance(workMat);
}