Circles in Minecraft

CircleHelper.java

package com.Orion.Armory.Util.Core;

import com.Orion.Armory.Common.Registry.GeneralRegistry;
import net.minecraft.world.World;

/**
 * Created by Orion
 * Created on 31.05.2015
 * 13:32
 * <p/>
 * Copyrighted according to Project specific license
 */
public class CircleHelper
{

    public static void FillCircle(int pOriginX, int pOriginY, int pOriginZ, World pWorldObj, int pRadius)
    {
        pWorldObj.setBlockToAir(pOriginX, pOriginY, pOriginZ);

        for (int tStep = 1 ; tStep <= pRadius; tStep ++)
        {
             SetCircleIncNeigborCheck(pOriginX, pOriginY, pOriginZ, pWorldObj, tStep);
        }
    }

    public static void SetCircle(int pOriginX, int pOriginY, int pOriginZ, World pWorldObj, int pRadius)
    {
        int tCurrentX = pRadius;
        int tCurrentZ = 0;
        int decisionOver2 = 1 - tCurrentX;   // Decision criterion divided by 2 evaluated at x=r, y=0

        while(tCurrentX >= tCurrentZ)
        {
            pWorldObj.setBlockToAir(tCurrentX + pOriginX, pOriginY, tCurrentZ + pOriginZ);
            pWorldObj.setBlockToAir(tCurrentZ + pOriginX, pOriginY, tCurrentX + pOriginZ);
            pWorldObj.setBlockToAir(-tCurrentX + pOriginX, pOriginY, tCurrentZ + pOriginZ);
            pWorldObj.setBlockToAir(-tCurrentZ + pOriginX, pOriginY, tCurrentX + pOriginZ);
            pWorldObj.setBlockToAir(-tCurrentX + pOriginX, pOriginY, -tCurrentZ + pOriginZ);
            pWorldObj.setBlockToAir(-tCurrentZ + pOriginX, pOriginY, -tCurrentX + pOriginZ);
            pWorldObj.setBlockToAir(tCurrentX + pOriginX, pOriginY, -tCurrentZ + pOriginZ);
            pWorldObj.setBlockToAir(tCurrentZ + pOriginX, pOriginY, -tCurrentX + pOriginZ);
            tCurrentZ++;

            if (decisionOver2<=0)
            {
                decisionOver2 += 2 * tCurrentZ + 1;   // Change in decision criterion for y -> y+1
            }
            else
            {
                tCurrentX--;
                decisionOver2 += 2 * (tCurrentZ - tCurrentX) + 1;   // Change for y -> y+1, x -> x-1
            }
        }
    }

    public static void SetCircleIncNeigborCheck(int pOriginX, int pOriginY, int pOriginZ, World pWorldObj, int pRadius)
    {
        int tCurrentX = pRadius;
        int tCurrentZ = 0;
        int decisionOver2 = 1 - tCurrentX;   // Decision criterion divided by 2 evaluated at x=r, y=0

        while(tCurrentX >= tCurrentZ)
        {
            SetBlockIncNeighborCheck(tCurrentX + pOriginX, pOriginY, tCurrentZ + pOriginZ,tCurrentX, 0, tCurrentZ, pWorldObj);
            SetBlockIncNeighborCheck(tCurrentZ + pOriginX, pOriginY, tCurrentX + pOriginZ,tCurrentZ, 0, tCurrentX, pWorldObj);
            SetBlockIncNeighborCheck(-tCurrentX + pOriginX, pOriginY, tCurrentZ + pOriginZ,-tCurrentX, 0, tCurrentZ, pWorldObj);
            SetBlockIncNeighborCheck(-tCurrentZ + pOriginX, pOriginY, tCurrentX + pOriginZ,-tCurrentZ, 0, tCurrentX, pWorldObj);
            SetBlockIncNeighborCheck(-tCurrentX + pOriginX, pOriginY, -tCurrentZ + pOriginZ,-tCurrentX, 0, -tCurrentZ, pWorldObj);
            SetBlockIncNeighborCheck(-tCurrentZ + pOriginX, pOriginY, -tCurrentX + pOriginZ,-tCurrentZ, 0, -tCurrentX, pWorldObj);
            SetBlockIncNeighborCheck(tCurrentX + pOriginX, pOriginY, -tCurrentZ + pOriginZ,tCurrentX, 0, -tCurrentZ, pWorldObj);
            SetBlockIncNeighborCheck(tCurrentZ + pOriginX, pOriginY, -tCurrentX + pOriginZ,tCurrentZ, 0, -tCurrentX, pWorldObj);
            tCurrentZ++;

            if (decisionOver2<=0)
            {
                decisionOver2 += 2 * tCurrentZ + 1;   // Change in decision criterion for y -> y+1
            }
            else
            {
                tCurrentX--;
                decisionOver2 += 2 * (tCurrentZ - tCurrentX) + 1;   // Change for y -> y+1, x -> x-1
            }
        }
    }

    private static void SetBlockIncNeighborCheck(int pOriginX, int pOriginY, int pOriginZ, int pRelativeX, int pRelativeY, int pRelativeZ, World pWorldObj)
    {
        pWorldObj.setBlockToAir(pOriginX, pOriginY, pOriginZ);

        int tRelativeX = 0;
        int tRelativeZ = 0;

        if (pRelativeX > 0)
        {
            tRelativeX = -1;
        }

        if (pRelativeX < 0)
        {
            tRelativeX = 1;
        }

        if (pRelativeZ > 0)
        {
            tRelativeZ = -1;
        }

        if (pRelativeZ < 0)
        {
            tRelativeZ = 1;
        }

        GeneralRegistry.iLogger.info(pRelativeX + "-" + pRelativeY + "-" + pRelativeZ + "/" + tRelativeX + "-" + tRelativeZ);
        pWorldObj.setBlockToAir(pOriginX + tRelativeX, pOriginY, pOriginZ + tRelativeZ);
        pWorldObj.setBlockToAir(pOriginX + tRelativeX, pOriginY, pOriginZ);
        pWorldObj.setBlockToAir(pOriginX, pOriginY, pOriginZ + tRelativeZ);
    }

}

MathHelper.Java

package com.Orion.Armory.Util.Core;

/**
 * Created by Orion
 * Created on 31.05.2015
 * 13:41
 * <p/>
 * Copyrighted according to Project specific license
 */
public class MathHelper
{

    public static int CalcModuloIncSign(int pInput, int pModulo)
    {
        int tResult = pInput % pModulo;

        if (pInput < 0)
        {
            tResult *= -1;
        }

        return tResult;
    }
}