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

package com.hypixel.hytale.builtin.hytalegenerator.density.nodes;

import com.hypixel.hytale.math.vector.Vector3d;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import com.hypixel.hytale.builtin.hytalegenerator.density.Density;

public class GradientWarpDensity extends Density
{
    private static final double HALF_PI = 1.5707963267948966;
    @Nullable
    private Density input;
    @Nullable
    private Density warpInput;
    private final double slopeRange;
    private final double warpFactor;
    
    public GradientWarpDensity(@Nonnull final Density input, @Nonnull final Density warpInput, final double slopeRange, final double warpFactor) {
        if (slopeRange <= 0.0) {
            throw new IllegalArgumentException();
        }
        this.slopeRange = slopeRange;
        this.warpFactor = warpFactor;
        this.input = input;
        this.warpInput = warpInput;
    }
    
    @Override
    public double process(@Nonnull final Context context) {
        if (this.input == null) {
            return 0.0;
        }
        if (this.warpInput == null) {
            return this.input.process(context);
        }
        final double valueAtOrigin = this.warpInput.process(context);
        final double maxX = context.position.x + this.slopeRange;
        final double maxY = context.position.y + this.slopeRange;
        final double maxZ = context.position.z + this.slopeRange;
        final Context childContext = new Context(context);
        childContext.position = new Vector3d(maxX, context.position.y, context.position.z);
        final double deltaX = this.warpInput.process(childContext) - valueAtOrigin;
        childContext.position = new Vector3d(context.position.x, maxY, context.position.z);
        final double deltaY = this.warpInput.process(childContext) - valueAtOrigin;
        childContext.position = new Vector3d(context.position.x, context.position.z, maxZ);
        final double deltaZ = this.warpInput.process(childContext) - valueAtOrigin;
        final Vector3d gradient = new Vector3d(deltaX, deltaY, deltaZ);
        gradient.scale(1.0 / this.slopeRange);
        gradient.scale(this.warpFactor);
        gradient.add(context.position.x, context.position.y, context.position.z);
        childContext.position = gradient;
        return this.input.process(childContext);
    }
    
    @Override
    public void setInputs(@Nonnull final Density[] inputs) {
        if (inputs.length == 0) {
            this.input = null;
        }
        this.input = inputs[0];
        if (inputs.length < 2) {
            this.warpInput = null;
        }
        this.warpInput = inputs[1];
    }
}