MathUtils.java

/*
 * Copyright 2010 Google Inc.
 *
 * 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.androsz.util;

import android.content.Context;

/**
 * Math utility functions.
 */
public final class MathUtils {
	public static int calculatePxFromDip(Context context, int sizeInDip) {
		final int dip = (int) (sizeInDip
				* context.getResources().getDisplayMetrics().density + 0.5f);
		return dip;
	}

	/**
	 * Equivalent to Math.max(low, Math.min(high, amount));
	 */
	public static float constrain(final float amount, final float low,
			final float high) {
		return amount < low ? low : amount > high ? high : amount;
	}

	/**
	 * Equivalent to Math.max(low, Math.min(high, amount));
	 */
	public static int constrain(final int amount, final int low, final int high) {
		return amount < low ? low : amount > high ? high : amount;
	}
}