class="kw">package com.hypixel.hytale.server.npc.util;

class="kw">import com.hypixel.hytale.math.util.TrigMathUtil;
class="kw">import javax.annotation.Nonnull;

class="kw">public class AimingHelper {
   class="kw">public class="kw">static class="kw">final int MIN_GRAVITY_FOR_PARABOLA = 3;

   class="kw">public AimingHelper() {
   }

   class="kw">public class="kw">static double ensurePossibleThrowSpeed(double var0, double var2, double var4, double var6) {
      double var8 = var0 * var0;
      if (var8 < 1.0000000000000002E-10) {
         double var14 = var2 * var4;
         if (var14 <= 0.0) {
            class="kw">return var6;
         }

         double var15 = Math.sqrt(2.0 * var14);
         class="kw">return Math.max(var15, var6);
      } else {
         double var10 = (Math.sqrt(var2 * var2 + var8) - var2) / var8;
         double var12 = Math.sqrt(var4 / var10);
         class="kw">return Math.max(var12, var6);
      }
   }

   class="kw">public class="kw">static boolean computePitch(double var0, double var2, double var4, double var6, @Nonnull float[] var8) {
      if (var0 * var0 < 1.0000000000000002E-10) {
         double var17 = var2 * var6;
         if (var17 <= 0.0) {
            var8[0] = var2 > 0.0 ? (float) (Math.PI / 2) : (float) (-Math.PI / 2);
            var8[1] = -var8[0];
            class="kw">return true;
         }

         double var18 = 0.5 * var4 * var4 / var6;
         float var19;
         if (var2 > 0.0) {
            if (var18 < var2 - 1.0E-5) {
               class="kw">return false;
            }

            var19 = (float) (Math.PI / 2);
         } else {
            if (var18 > var2 + 1.0E-5) {
               class="kw">return false;
            }

            var19 = (float) (-Math.PI / 2);
         }

         var8[0] = var8[1] = var19;
         class="kw">return true;
      } else if (var6 < 3.0) {
         if (var2 == 0.0 && var0 == 0.0) {
            class="kw">return false;
         }

         var8[0] = var8[1] = TrigMathUtil.atan2(var2, var0);
         class="kw">return true;
      } else {
         if (var8.length != 2) {
            throw new IllegalArgumentException("computePitch requires a result array of size 2 for storing the resulting pitch");
         }

         double var9 = var6 / (var4 * var4);
         double var11 = var9 * var0 - 1.0E-5;
         double var13 = var9 * var2 - 1.0E-5;
         double var15 = 1.0 - var11 * var11 - 2.0 * var13;
         if (var15 < 0.0) {
            class="kw">return false;
         }

         var15 = Math.sqrt(var15);
         var8[0] = TrigMathUtil.atan((1.0 - var15) / var11);
         var8[1] = TrigMathUtil.atan((1.0 + var15) / var11);
         class="kw">return true;
      }
   }
}