// 
// Decompiled by Procyon v0.6.0
// 

package com.hypixel.hytale.server.worldgen.container;

import javax.annotation.Nonnull;
import com.hypixel.hytale.server.worldgen.zone.ZoneGeneratorResult;

public class FadeContainer
{
    public static final double NO_FADE_HEIGHTMAP = Double.NEGATIVE_INFINITY;
    protected final double maskFadeStart;
    protected final double maskFadeLength;
    protected final double maskFadeSum;
    protected final double terrainFadeStart;
    protected final double terrainFadeLength;
    protected final double terrainFadeSum;
    protected final double fadeHeightmap;
    
    public FadeContainer(final double maskFadeStart, final double maskFadeLength, final double terrainFadeStart, final double terrainFadeLength, final double fadeHeightmap) {
        this.maskFadeStart = maskFadeStart;
        this.maskFadeLength = maskFadeLength;
        this.maskFadeSum = maskFadeStart + maskFadeLength;
        this.terrainFadeStart = terrainFadeStart;
        this.terrainFadeLength = terrainFadeLength;
        this.terrainFadeSum = terrainFadeStart + terrainFadeLength;
        this.fadeHeightmap = fadeHeightmap;
    }
    
    public double getMaskFadeStart() {
        return this.maskFadeStart;
    }
    
    public double getMaskFadeLength() {
        return this.maskFadeLength;
    }
    
    public double getMaskFadeSum() {
        return this.maskFadeSum;
    }
    
    public double getHeightFadeStart() {
        return this.terrainFadeStart;
    }
    
    public double getHeightFadeLength() {
        return this.terrainFadeLength;
    }
    
    public double getHeightFadeSum() {
        return this.terrainFadeSum;
    }
    
    public double getFadeHeightmap() {
        return this.fadeHeightmap;
    }
    
    public double getMaskFactor(@Nonnull final ZoneGeneratorResult result) {
        return this.getFactor(result, this.maskFadeStart, this.maskFadeLength);
    }
    
    public double getTerrainFactor(@Nonnull final ZoneGeneratorResult result) {
        return this.getFactor(result, this.terrainFadeStart, this.terrainFadeLength);
    }
    
    public double getFactor(@Nonnull final ZoneGeneratorResult result, final double distanceFromBorder, final double gradientWidth) {
        return 1.0 - limit((result.getBorderDistance() - distanceFromBorder) / gradientWidth);
    }
    
    public boolean shouldFade() {
        return this.fadeHeightmap != Double.NEGATIVE_INFINITY;
    }
    
    @Nonnull
    @Override
    public String toString() {
        return "FadeContainer{maskFadeStart=" + this.maskFadeStart + ", maskFadeLength=" + this.maskFadeLength + ", maskFadeSum=" + this.maskFadeSum + ", terrainFadeStart=" + this.terrainFadeStart + ", terrainFadeLength=" + this.terrainFadeLength + ", terrainFadeSum=" + this.terrainFadeSum + ", fadeHeightmap=" + this.fadeHeightmap;
    }
    
    private static double limit(final double d) {
        if (d < 0.0) {
            return 0.0;
        }
        if (d > 1.0) {
            return 1.0;
        }
        return d;
    }
}