1 files changed, 49 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/MathUtils.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/MathUtils.java
new file mode 100644
index 0000000000..0c90e4b244
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/MathUtils.java
@@ -0,0 +1,49 @@
+package com.mapbox.mapboxsdk.utils;
+
+// TODO Remove this class if we finally include it within MAS 3.x (GeoJSON)
+public class MathUtils {
+
+  /**
+   * Test a value in specified range, returning minimum if it's below, and maximum if it's above
+   *
+   * @param value Value to test
+   * @param min   Minimum value of range
+   * @param max   Maximum value of range
+   * @return value if it's between min and max, min if it's below, max if it's above
+   */
+  public static double clamp(double value, double min, double max) {
+    return Math.max(min, Math.min(max, value));
+  }
+
+  /**
+   * Test a value in specified range, returning minimum if it's below, and maximum if it's above
+   *
+   * @param value Value to test
+   * @param min   Minimum value of range
+   * @param max   Maximum value of range
+   * @return value if it's between min and max, min if it's below, max if it's above
+   */
+  public static float clamp(float value, float min, float max) {
+    return Math.max(min, Math.min(max, value));
+  }
+
+  /**
+   * Constrains value to the given range (including min, excluding max) via modular arithmetic.
+   * <p>
+   * Same formula as used in Core GL (wrap.hpp)
+   * std::fmod((std::fmod((value - min), d) + d), d) + min;
+   *
+   * @param value Value to wrap
+   * @param min   Minimum value
+   * @param max   Maximum value
+   * @return Wrapped value
+   */
+  public static double wrap(double value, double min, double max) {
+    double delta = max - min;
+
+    double firstMod = (value - min) % delta;
+    double secondMod = (firstMod + delta) % delta;
+
+    return secondMod + min;
+  }
+}