From c04a984788fc04fcf194b9914c2ce10b3176d85e Mon Sep 17 00:00:00 2001 From: 13766800364 <13766800364@qq.com> Date: Thu, 9 Oct 2025 16:11:18 +0800 Subject: [PATCH] Add File --- .../drinkjava2/frog/util/RandomUtils.java | 132 ++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 history/005_letter_test/src/main/java/com/github/drinkjava2/frog/util/RandomUtils.java diff --git a/history/005_letter_test/src/main/java/com/github/drinkjava2/frog/util/RandomUtils.java b/history/005_letter_test/src/main/java/com/github/drinkjava2/frog/util/RandomUtils.java new file mode 100644 index 0000000..efca33c --- /dev/null +++ b/history/005_letter_test/src/main/java/com/github/drinkjava2/frog/util/RandomUtils.java @@ -0,0 +1,132 @@ +/* Copyright 2018-2020 the original author or authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may not + * use this file except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by + * applicable law or agreed to in writing, software distributed under the + * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS + * OF ANY KIND, either express or implied. See the License for the specific + * language governing permissions and limitations under the License. + */ +package com.github.drinkjava2.frog.util; + +import static com.github.drinkjava2.frog.Env.FROG_BRAIN_XSIZE; +import static com.github.drinkjava2.frog.Env.FROG_BRAIN_YSIZE; +import static com.github.drinkjava2.frog.Env.FROG_BRAIN_ZSIZE; + +import java.util.Random; + +import com.github.drinkjava2.frog.Env; +import com.github.drinkjava2.frog.brain.Cone; +import com.github.drinkjava2.frog.brain.Cuboid; +import com.github.drinkjava2.frog.brain.Hole; +import com.github.drinkjava2.frog.brain.Shape; + +/** + * Random Utilities used in this project + * + * @author Yong Zhu + * @since 1.0 + */ +public class RandomUtils { + + private RandomUtils() { + } + + private static final Random rand = new Random(); + + public static int nextInt(int i) { + return rand.nextInt(i); + } + + public static float nextFloat() { + return rand.nextFloat(); + } + + public static boolean percent(float percent) {// 有百分这percent的机率为true + return rand.nextInt(100) < percent; + } + + /** Randomly create a Cuboid inside of brain space */ + public static Cuboid randomCuboid() {// 随机生成一个位于脑空间内的立方体 + Cuboid c = new Cuboid(); + c.x = nextInt(FROG_BRAIN_XSIZE) - FROG_BRAIN_XSIZE / 4;// 为了多产生贴边的立方体，超出边界的被裁切 + if (c.x < 0) + c.x = 0; + c.y = nextInt(FROG_BRAIN_YSIZE) - FROG_BRAIN_YSIZE / 4; + if (c.y < 0) + c.y = 0; + c.z = nextInt(FROG_BRAIN_ZSIZE) - FROG_BRAIN_ZSIZE / 4; + if (c.z < 0) + c.z = 0; + c.xe = 1 + nextInt(FROG_BRAIN_XSIZE); // 立方体任一个边长至少是1 + if (c.xe > (FROG_BRAIN_XSIZE - c.x))// 超出边界的被裁切 + c.xe = FROG_BRAIN_XSIZE - c.x; + c.ye = 1 + nextInt(FROG_BRAIN_YSIZE); + if (c.ye > (FROG_BRAIN_YSIZE - c.y)) + c.ye = FROG_BRAIN_YSIZE - c.y; + c.ze = 1 + nextInt(FROG_BRAIN_ZSIZE); + if (c.ze > (FROG_BRAIN_ZSIZE - c.z)) + c.ze = FROG_BRAIN_ZSIZE - c.z; + return c; + } + + /** Randomly create a Cone inside of brain space */ + public static Cone randomCone() {// 随机生成一个位于脑空间内的锥体 + Cone c = new Cone(); + c.x1 = nextInt(Env.FROG_BRAIN_XSIZE); + c.y1 = nextInt(Env.FROG_BRAIN_YSIZE); + c.z1 = nextInt(Env.FROG_BRAIN_ZSIZE); + c.x2 = nextInt(Env.FROG_BRAIN_XSIZE); + c.y2 = nextInt(Env.FROG_BRAIN_YSIZE); + c.z2 = nextInt(Env.FROG_BRAIN_ZSIZE); + c.r1 = nextInt(Env.FROG_BRAIN_ZSIZE / 2);// 暂时以z边长的一半取随机数 + c.r2 = nextInt(Env.FROG_BRAIN_ZSIZE / 2); + return c; + } + + public static int vary(int v, int percet) { + if (percent(percet)) + return vary(v); + return v; + } + + public static int vary(int v) {// 随机有大概率小变异，小概率大变异，极小概率极大变异 + if (percent(40)) + v *= .98 + .04 * nextFloat(); // 0.98~1.02 + if (percent(10)) + v *= .95 + .103 * nextFloat(); // 0.95~1.053 + else if (percent(5)) + v *= .08 + 0.45 * nextFloat(); // 0.8~1.25 + else if (percent(1)) + v *= .05 + 1.5 * nextFloat(); // 0.5~2 + return v; + } + + public static float vary(float v, int percet) { + if (percent(percet)) + return vary(v); + return v; + } + + public static float vary(float v) {// 随机有大概率小变异，小概率大变异，极小概率极大变异 + if (percent(40)) + v *= .98 + .04 * nextFloat(); // 0.98~1.02 + if (percent(10)) + v *= .95 + .103 * nextFloat(); // 0.95~1.053 + else if (percent(5)) + v *= .08 + 0.45 * nextFloat(); // 0.8~1.25 + else if (percent(1)) + v *= .05 + 1.5 * nextFloat(); // 0.5~2 + return v; + } + + public static Shape vary(Shape shape) {// 随机有大概率小变异，小概率大变异，极小概率极大变异 + return shape; // TODO shape的变异 + } + + public static Hole[] vary(Hole[] holes) {// 随机有大概率小变异，小概率大变异，极小概率极大变异 + return holes; // TODO holes的变异 + } + +}