super-snuvi/src/me/hammerle/supersnuvi/util/Utils.java

package me.hammerle.supersnuvi.util;

import me.hammerle.supersnuvi.tiles.Tile;

public class Utils 
{
    public static float round(float d)
    {
        return Math.round(d * 10000) / 10000f;
    }
    
    public static float interpolate(float from, float to, float factor)
    {
        return from + (to - from) * factor;
    }
    
    public static float interpolateY(float x1, float y1, float x2, float y2, float x3)
    {
        float k = (y2 - y1) / (x2 - x1);
        return k * x3 + y1 - k * x1;
    }
    
    public static float interpolateX(float x1, float y1, float x2, float y2, float y3)
    {
        float k = (x2 - x1) / (y2 - y1);
        return (y3 - y1) * k + x1;
    }
    
    public static int toBlock(float c)
    {
        return (int) (c / Tile.SIZE);
    }

    public static float toCoord(int b)
    {
        return b * Tile.SIZE;
    }
    
    public static float getSquaredDistance(float x1, float y1, float x2, float y2)
    {
        return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
    }
}