Reimplement angle mask parsing

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/MaskFactory.java

@@ -70,6 +70,7 @@ public final class MaskFactory extends AbstractFactory<Mask> {
         register(new YAxisMaskParser(worldEdit));
         register(new ZAxisMaskParser(worldEdit));
         register(new SimplexMaskParser(worldEdit));
+        register(new AngleMaskParser(worldEdit));
 
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/AngleMaskParser.java

@@ -0,0 +1,46 @@
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.boydti.fawe.object.mask.AngleMask;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.factory.parser.RichParser;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.Mask;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.stream.Stream;
+
+public class AngleMaskParser extends RichParser<Mask> {
+
+    public AngleMaskParser(WorldEdit worldEdit) {
+        super(worldEdit, "/");
+    }
+
+    @Override
+    protected Stream<String> getSuggestions(String argumentInput, int index) {
+        return null;
+    }
+
+    @Override
+    protected Mask parseFromInput(@NotNull String[] arguments, ParserContext context) throws InputParseException {
+        if (arguments.length != 2) return null;
+        String minArg = arguments[0];
+        String maxArg = arguments[1];
+        boolean degree = minArg.endsWith("d");
+        if (degree ^ maxArg.endsWith("d")) {
+            throw new InputParseException("Cannot combine degree with block-step");
+        }
+        double min, max;
+        if (degree) {
+            double minDeg = Double.parseDouble(minArg.substring(0, minArg.length() - 1));
+            double maxDeg = Double.parseDouble(maxArg.substring(0, maxArg.length() - 1));
+            min = (Math.tan(minDeg * (Math.PI / 180)));
+            max = (Math.tan(maxDeg * (Math.PI / 180)));
+        } else {
+            min = Double.parseDouble(minArg);
+            max = Double.parseDouble(maxArg);
+        }
+
+        return new AngleMask(context.getExtent(), min, max, false, 1);
+    }
+}