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package org.happysanta.gd.Game;
// Decompiled by Jad v1.5.8f. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi
public class FPMath {
// public static final int UNSIGNED_MASK = 0x7fffffff;
// public static final int SIGN_MASK = 0x80000000;
//public static final int m_ifI;
// public static final int m_aI = 1;
public static int HALF_PI = 0x19220; // 1,57080949111162
// public static int DOUBLE_PI = 0x6487f; // 6,283192187380789
public static int PI = 0x3243f; // 3,141588464179446
// public static int ONE = 0x10000;
private static int m_jI;
private static int m_kI;
// private static int SIN_TABLE[] = {
// 0, 1608, 3215, 4821, 6423, 8022, 9616, 11204, 12785, 14359,
// 15923, 17479, 19024, 20557, 22078, 23586, 25079, 26557, 28020, 29465,
// 30893, 32302, 33692, 35061, 36409, 37736, 39039, 40319, 41575, 42806,
// 44011, 45189, 46340, 47464, 48558, 49624, 50660, 51665, 52639, 53581,
// 54491, 55368, 56212, 57022, 57797, 58538, 59243, 59913, 60547, 61144,
// 61705, 62228, 62714, 63162, 63571, 63943, 64276, 64571, 64826, 65043,
// 65220, 65358, 65457, 65516
// };
// private static int ARCTG_TABLE[] = {
// 0, 1023, 2047, 3069, 4090, 5109, 6126, 7139, 8149, 9155,
// 10157, 11155, 12146, 13133, 14113, 15087, 16054, 17015, 17967, 18912,
// 19849, 20778, 21698, 22610, 23512, 24405, 25289, 26163, 27027, 27882,
// 28726, 29561, 30385, 31199, 32003, 32796, 33579, 34352, 35114, 35866,
// 36608, 37339, 38060, 38771, 39471, 40161, 40841, 41512, 42172, 42822,
// 43463, 44094, 44716, 45328, 45931, 46524, 47109, 47684, 48251, 48809,
// 49358, 49899, 50431, 50955
// };
public FPMath() {
}
public static int divide(int i, int j) {
int res = (int) (((long) i << 32) / (long) j >> 16);
return res;
}
public static int sin(int i) {
float fi = i / (float) 0xFFFF;
return (int) Math.round(Math.sin(fi) * 65536);
}
public static int _doII(int i) {
return sin(HALF_PI - i);
}
public static int arctg(int i) {
float fi = i / (float) 0xFFFF;
return (int) Math.round(Math.atan(fi) * 65536);
}
public static int _ifIII(int i, int j) {
if ((j >= 0 ? j : -j) < 3)
return (i <= 0 ? -1 : 1) * HALF_PI;
int k = arctg(divide(i, j));
if (i > 0)
if (j > 0)
return k;
else
return PI + k;
if (j > 0)
return k;
else
return k - PI;
}
static {
m_jI = 64;
m_kI = m_jI << 16;
}
}
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