FillStrategy.java

/**
 * Copyright 2014 
 * SMEdit https://github.com/StarMade/SMEdit
 * SMTools https://github.com/StarMade/SMTools
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 **/
package jo.sm.plugins.ship.fill;

import java.util.Comparator;

import jo.vecmath.Point3i;

/**
 * @Auther Jo Jaquinta for SMEdit Classic - version 1.0
 **/
public class FillStrategy implements Comparator<Point3i> {

    public static final int MINUS = 0;
    public static final int PLUS = 1;
    public static final int CENTER = 2;
    public static final int OUTSIDE = 3;

    public static final int X = 0x01;
    public static final int Y = 0x02;
    public static final int Z = 0x04;

    private final int mStrategy;
    private final int mAxis;
    private final Point3i mLower;
    private final Point3i mUpper;

    public FillStrategy(int strategy, int axis, Point3i lower, Point3i upper) {
        mStrategy = strategy;
        mAxis = axis;
        mLower = lower;
        mUpper = upper;
    }

//    private Set<Point3i> done = new HashSet<Point3i>();
    @Override
    public int compare(Point3i o1, Point3i o2) {
        int weight1;
        weight1 = 0;
        int weight2;
        weight2 = 0;
        if ((mAxis & X) != 0) {
            weight1 += getWeight(o1.x, mLower.x, mUpper.x);
            weight2 += getWeight(o2.x, mLower.x, mUpper.x);
        }
        if ((mAxis & Y) != 0) {
            weight1 += getWeight(o1.y, mLower.y, mUpper.y);
            weight2 += getWeight(o2.y, mLower.y, mUpper.y);
        }
        if ((mAxis & Z) != 0) {
            weight1 += getWeight(o1.z, mLower.z, mUpper.z);
            weight2 += getWeight(o2.z, mLower.z, mUpper.z);
        }
//        if (!done.contains(o1))
//        {
//            System.out.println(o1+" weight of "+weight1+" axis="+Integer.toHexString(mAxis)+", low="+mLower+", high="+mUpper);
//            done.add(o1);
//        }
//        if (!done.contains(o2))
//        {
//            System.out.println(o2+" weight of "+weight2+" axis="+Integer.toHexString(mAxis)+", low="+mLower+", high="+mUpper);
//            done.add(o2);
//        }
        return weight1 - weight2;
    }

    // the higher the value the less desirable this position is
    private int getWeight(int v, int low, int high) {
        if (mStrategy == MINUS) {
            return v - low;
        }
        if (mStrategy == PLUS) {
            return high - v;
        }
        if (mStrategy == CENTER) {
            return Math.abs(v);
        }
        if (mStrategy == OUTSIDE) {
            return Math.min(v - low, high - v);
        }
        return 0;
    }

}