mirror of https://github.com/GeyserMC/Geyser.git
116 lines
3.7 KiB
Java
116 lines
3.7 KiB
Java
/*
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* Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.geyser.util;
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public class MathUtils {
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public static final double SQRT_OF_TWO = Math.sqrt(2);
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/**
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* Round the given float to the next whole number
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*
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* @param floatNumber Float to round
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* @return Rounded number
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*/
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public static int ceil(float floatNumber) {
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int truncated = (int) floatNumber;
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return floatNumber > truncated ? truncated + 1 : truncated;
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}
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/**
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* If number is greater than the max, set it to max, and if number is lower than low, set it to low.
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*
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* @param num number to calculate
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* @param min the lowest value the number can be
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* @param max the greatest value the number can be
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* @return - min if num is lower than min <br>
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* - max if num is greater than max <br>
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* - num otherwise
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*/
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public static double constrain(double num, double min, double max) {
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if (num > max) {
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num = max;
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}
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if (num < min) {
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num = min;
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}
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return num;
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}
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/**
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* If number is greater than the max, set it to max, and if number is lower than low, set it to low.
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*
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* @param num number to calculate
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* @param min the lowest value the number can be
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* @param max the greatest value the number can be
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* @return - min if num is lower than min <br>
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* - max if num is greater than max <br>
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* - num otherwise
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*/
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public static int constrain(int num, int min, int max) {
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if (num > max) {
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num = max;
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}
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if (num < min) {
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num = min;
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}
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return num;
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}
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/**
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* Ensures the resulting object is a byte. Java Edition does not care whether a byte is encoded as an integer or not;
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* it converts it into a byte anyway.
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*
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* @param value The value to convert
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* @return The converted byte
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*/
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public static byte getNbtByte(Object value) {
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return ((Number) value).byteValue();
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}
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/**
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* Packs a chunk's X and Z coordinates into a single {@code long}.
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*
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* @param x the X coordinate
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* @param z the Z coordinate
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* @return the packed coordinates
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*/
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public static long chunkPositionToLong(int x, int z) {
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return ((x & 0xFFFFFFFFL) << 32L) | (z & 0xFFFFFFFFL);
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}
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/**
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* @return the bits per entry used when this number is the maximum amount of entries.
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*/
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public static int getGlobalPaletteForSize(int size) {
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return 32 - Integer.numberOfLeadingZeros(size - 1);
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}
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}
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