    001    package net.minecraft.client.renderer.culling;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005
    006    @SideOnly(Side.CLIENT)
    007    public class ClippingHelper
    008    {
    009        public float[][] frustum = new float[16][16];
    010        public float[] projectionMatrix = new float[16];
    011        public float[] modelviewMatrix = new float[16];
    012        public float[] clippingMatrix = new float[16];
    013
    014        /**
    015         * Returns true if the box is inside all 6 clipping planes, otherwise returns false.
    016         */
    017        public boolean isBoxInFrustum(double par1, double par3, double par5, double par7, double par9, double par11)
    018        {
    019            for (int var13 = 0; var13 < 6; ++var13)
    020            {
    021                if ((double)this.frustum[var13][0] * par1 + (double)this.frustum[var13][1] * par3 + (double)this.frustum[var13][2] * par5 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par7 + (double)this.frustum[var13][1] * par3 + (double)this.frustum[var13][2] * par5 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par1 + (double)this.frustum[var13][1] * par9 + (double)this.frustum[var13][2] * par5 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par7 + (double)this.frustum[var13][1] * par9 + (double)this.frustum[var13][2] * par5 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par1 + (double)this.frustum[var13][1] * par3 + (double)this.frustum[var13][2] * par11 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par7 + (double)this.frustum[var13][1] * par3 + (double)this.frustum[var13][2] * par11 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par1 + (double)this.frustum[var13][1] * par9 + (double)this.frustum[var13][2] * par11 + (double)this.frustum[var13][3] <= 0.0D && (double)this.frustum[var13][0] * par7 + (double)this.frustum[var13][1] * par9 + (double)this.frustum[var13][2] * par11 + (double)this.frustum[var13][3] <= 0.0D)
    022                {
    023                    return false;
    024                }
    025            }
    026
    027            return true;
    028        }
    029    }