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make BinaryColumn#or able to OR columns of different size

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dfsek 2022-01-08 10:25:53 -07:00
parent 9c024df9e5
commit 8a35e3f21d
1 changed files with 18 additions and 5 deletions
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23
common/api/src/main/java/com/dfsek/terra/api/structure/feature/BinaryColumn.java
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@ -18,6 +18,7 @@ import java.util.function.IntConsumer;
public class BinaryColumn { public class BinaryColumn {
private final boolean[] data; private final boolean[] data;
private final int minY; private final int minY;
private final int maxY;
/** /**
* Constructs a new {@link BinaryColumn} with all values initiated to {@code false} * Constructs a new {@link BinaryColumn} with all values initiated to {@code false}
@ -26,6 +27,7 @@ public class BinaryColumn {
*/ */
public BinaryColumn(int minY, int maxY) { public BinaryColumn(int minY, int maxY) {
this.minY = minY; this.minY = minY;
this.maxY = maxY;
if(maxY <= minY) throw new IllegalArgumentException("Max y must be greater than min y"); if(maxY <= minY) throw new IllegalArgumentException("Max y must be greater than min y");
this.data = new boolean[maxY - minY]; this.data = new boolean[maxY - minY];
} }
@ -90,12 +92,23 @@ public class BinaryColumn {
* @throws IllegalArgumentException if column heights do not match * @throws IllegalArgumentException if column heights do not match
*/ */
public BinaryColumn or(BinaryColumn that) { public BinaryColumn or(BinaryColumn that) {
if(that.minY != this.minY) throw new IllegalArgumentException("Must share same min Y"); int smallMinY = Math.min(this.minY, that.minY);
if(that.data.length != this.data.length) throw new IllegalArgumentException("Must share same max Y"); int bigMaxY = Math.max(this.maxY, that.maxY);
BinaryColumn next = new BinaryColumn(minY, data.length - minY);
for(int i = 0; i < this.data.length; i++) { BinaryColumn next = new BinaryColumn(smallMinY, bigMaxY);
next.data[i] = this.data[i] || that.data[i];
for(int i = smallMinY; i < bigMaxY; i++) {
int index = i - smallMinY;
boolean left = false;
boolean right = false;
if(this.data.length > index) {
left = this.data[index];
}
if(that.data.length > index) {
right = this.data[index];
}
next.data[i] = left || right;
} }
return next; return next;