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package makamys.neodymium.renderer;
import java.util.Comparator;
public class Comparators {
public static final MeshDistanceComparator MESH_DISTANCE_COMPARATOR = new MeshDistanceComparator();
public static final RegionDistanceComparator REGION_DISTANCE_COMPARATOR = new RegionDistanceComparator();
public static class MeshDistanceComparator implements Comparator<Mesh> {
double x, y, z;
boolean inverted;
public Comparator<? super Mesh> setInverted(boolean inverted) {
this.inverted = inverted;
return this;
}
public MeshDistanceComparator setOrigin(double x, double y, double z) {
this.x = x / 16.0;
this.y = y / 16.0;
this.z = z / 16.0;
return this;
}
@Override
public int compare(Mesh a, Mesh b) {
if(a.pass < b.pass) {
return -1;
} else if(a.pass > b.pass) {
return 1;
} else {
double distSqA = a.distSq(x, y, z);
double distSqB = b.distSq(x, y, z);
int mult = inverted ? -1 : 1;
if(distSqA > distSqB) {
return 1 * mult;
} else if(distSqA < distSqB) {
return -1 * mult;
} else {
return 0;
}
}
}
}
public static class RegionDistanceComparator implements Comparator<NeoRegion> {
double x, y, z;
public RegionDistanceComparator setOrigin(double x, double y, double z) {
this.x = x / (NeoRegion.SIZE * 16.0);
this.y = y / (NeoRegion.SIZE * 16.0);
this.z = z / (NeoRegion.SIZE * 16.0);
return this;
}
@Override
public int compare(NeoRegion a, NeoRegion b) {
double distSqA = a.distSq(x, y, z);
double distSqB = b.distSq(x, y, z);
if(distSqA > distSqB) {
return 1;
} else if(distSqA < distSqB) {
return -1;
} else {
return 0;
}
}
}
}
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