Mega Code Archive
Convert an array of floats to 16 16 fixed-point
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//package edu.dhbw.andobjviewer.util;
// Much of this is adapted from the beartronics FP lib
class FixedPointUtils {
public static final int ONE = 0x10000;
/**
* Convert an array of floats to 16.16 fixed-point
* @param arr The array
* @return A newly allocated array of fixed-point values.
*/
public static int[] toFixed(float[] arr) {
int[] res = new int[arr.length];
toFixed(arr, res);
return res;
}
/**
* Convert a float to 16.16 fixed-point representation
* @param val The value to convert
* @return The resulting fixed-point representation
*/
public static int toFixed(float val) {
return (int)(val * 65536F);
}
/**
* Convert an array of floats to 16.16 fixed-point
* @param arr The array of floats
* @param storage The location to store the fixed-point values.
*/
public static void toFixed(float[] arr, int[] storage)
{
for (int i=0;i<storage.length;i++) {
storage[i] = toFixed(arr[i]);
}
}
/**
* Convert a 16.16 fixed-point value to floating point
* @param val The fixed-point value
* @return The equivalent floating-point value.
*/
public static float toFloat(int val) {
return ((float)val)/65536.0f;
}
/**
* Convert an array of 16.16 fixed-point values to floating point
* @param arr The array to convert
* @return A newly allocated array of floats.
*/
public static float[] toFloat(int[] arr) {
float[] res = new float[arr.length];
toFloat(arr, res);
return res;
}
/**
* Convert an array of 16.16 fixed-point values to floating point
* @param arr The array to convert
* @param storage Pre-allocated storage for the result.
*/
public static void toFloat(int[] arr, float[] storage)
{
for (int i=0;i<storage.length;i++) {
storage[i] = toFloat(arr[i]);
}
}
}
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