Create MathUtils.java

Math utilities for project

src/main/java/br/com/rafael/math/MathUtils.java

@@ -0,0 +1,88 @@
+package br.com.rafael.math;
+/**
+ * Copyright© 2020 Victor Rafael Pereira Alves This file is part of MathUtils.
+ *
+ * <p>MathUtils is free software: you can redistribute it and/or modify it under the terms of the
+ * Lesser GNU General Public License as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * <p>MathUtils is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser
+ * GNU General Public License for more details.
+ *
+ * <p>You should have received a copy of the Lesser GNU General Public License along with MathUtils.
+ * If not, see &#60;https://www.gnu.org/licenses/&#62;.
+ */
+import br.com.rafael.math.vector.Vector2D;
+
+public final class MathUtils {
+
+  public static final double normalize(double value, double min, double max) {
+    return (value - min) / (max - min);
+  }
+
+  public static final byte lerp(double v, byte in0, byte in1) {
+    return (byte) (in0 + v * (in1 - in0));
+  }
+
+  public static final short lerp(double v, short in0, short in1) {
+    return (short) (in0 + v * (in1 - in0));
+  }
+
+  public static final int lerp(double v, int in0, int in1) {
+    return (int) (in0 + v * (in1 - in0));
+  }
+
+  public static final long lerp(double v, long in0, long in1) {
+    return (long) (in0 + v * (in1 - in0));
+  }
+
+  public static final float lerp(double v, float in0, float in1) {
+    return (float) (in0 + v * (in1 - in0));
+  }
+
+  public static final double lerp(double v, double in0, double in1) {
+    return in0 + v * (in1 - in0);
+  }
+
+  public static final byte resize(byte value, byte in0, byte in1, byte out0, byte out1) {
+    double normal = normalize(value, in0, in1);
+    byte result = lerp(normal, out0, out1);
+    return result;
+  }
+
+  public static final short resize(short value, short in0, short in1, short out0, short out1) {
+    double normal = normalize(value, in0, in1);
+    short result = lerp(normal, out0, out1);
+    return result;
+  }
+
+  public static final int resize(int value, int in0, int in1, int out0, int out1) {
+    double normal = normalize(value, in0, in1);
+    int result = lerp(normal, out0, out1);
+    return result;
+  }
+
+  public static final long resize(long value, long in0, long in1, long out0, long out1) {
+    double normal = normalize(value, in0, in1);
+    long result = lerp(normal, out0, out1);
+    return result;
+  }
+
+  public static final float resize(float value, float in0, float in1, float out0, float out1) {
+    double normal = normalize(value, in0, in1);
+    float result = lerp(normal, out0, out1);
+    return result;
+  }
+
+  public static final double resize(
+      double value, double in0, double in1, double out0, double out1) {
+    double normal = normalize(value, in0, in1);
+    double result = lerp(normal, out0, out1);
+    return result;
+  }
+
+  public static final Vector2D truncate(Vector2D vector, double size) {
+    return vector.size() > size ? vector.resize(size) : vector;
+  }
+}