87 lines
2.6 KiB
Java
87 lines
2.6 KiB
Java
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package net.minecraft.world.phys.shapes;
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import it.unimi.dsi.fastutil.doubles.DoubleArrayList;
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import it.unimi.dsi.fastutil.doubles.DoubleList;
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import it.unimi.dsi.fastutil.doubles.DoubleLists;
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public class IndirectMerger implements IndexMerger {
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private static final DoubleList EMPTY = DoubleLists.unmodifiable(DoubleArrayList.wrap(new double[]{0.0}));
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private final double[] result;
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private final int[] firstIndices;
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private final int[] secondIndices;
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private final int resultLength;
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public IndirectMerger(DoubleList p_83001_, DoubleList p_83002_, boolean p_83003_, boolean p_83004_) {
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double d0 = Double.NaN;
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int i = p_83001_.size();
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int j = p_83002_.size();
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int k = i + j;
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this.result = new double[k];
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this.firstIndices = new int[k];
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this.secondIndices = new int[k];
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boolean flag = !p_83003_;
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boolean flag1 = !p_83004_;
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int l = 0;
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int i1 = 0;
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int j1 = 0;
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while (true) {
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boolean flag2 = i1 >= i;
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boolean flag3 = j1 >= j;
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if (flag2 && flag3) {
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this.resultLength = Math.max(1, l);
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return;
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}
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boolean flag4 = !flag2 && (flag3 || p_83001_.getDouble(i1) < p_83002_.getDouble(j1) + 1.0E-7);
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if (flag4) {
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i1++;
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if (flag && (j1 == 0 || flag3)) {
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continue;
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}
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} else {
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j1++;
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if (flag1 && (i1 == 0 || flag2)) {
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continue;
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}
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}
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int k1 = i1 - 1;
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int l1 = j1 - 1;
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double d1 = flag4 ? p_83001_.getDouble(k1) : p_83002_.getDouble(l1);
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if (!(d0 >= d1 - 1.0E-7)) {
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this.firstIndices[l] = k1;
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this.secondIndices[l] = l1;
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this.result[l] = d1;
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l++;
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d0 = d1;
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} else {
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this.firstIndices[l - 1] = k1;
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this.secondIndices[l - 1] = l1;
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}
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}
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}
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@Override
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public boolean forMergedIndexes(IndexMerger.IndexConsumer p_83007_) {
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int i = this.resultLength - 1;
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for (int j = 0; j < i; j++) {
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if (!p_83007_.merge(this.firstIndices[j], this.secondIndices[j], j)) {
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return false;
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}
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}
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return true;
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}
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@Override
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public int size() {
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return this.resultLength;
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}
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@Override
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public DoubleList getList() {
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return (DoubleList)(this.resultLength <= 1 ? EMPTY : DoubleArrayList.wrap(this.result, this.resultLength));
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}
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}
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