Mega Code Archive
Unit measure
<![CDATA[
/*
* Ruler.java
*
* Created on Oct 1, 2007, 8:33:09 AM
*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
import java.util.HashMap;
/**
*
* @author gtoffoli
*/
public class Unit {
public static final double PIXEL = 1.0;
public static final double INCHES = 72.0;
public static final double CENTIMETERS = 28.3464;
public static final double MILLIMETERS = 2.83464;
/** Holds value of property unitName. */
private String unitName;
private String keyName;
/** Holds value of property conversionValue. */
private double conversionValue;
/** Creates a new instance of Unit */
public Unit(String unitName, double conversionValue) {
this(unitName, conversionValue, unitName);
}
public Unit(String unitName, double conversionValue, String keyName) {
this.unitName = unitName;
this.conversionValue = conversionValue;
this.setKeyName(keyName);
}
/** Getter for property unitName.
* @return Value of property unitName.
*
*/
public String getUnitName() {
return this.unitName;
}
/** Setter for property unitName.
* @param unitName New value of property unitName.
*
*/
public void setUnitName(String unitName) {
this.unitName = unitName;
}
/** Getter for property conversionValue.
* @return Value of property conversionValue.
*
*/
public double getConversionValue() {
return this.conversionValue;
}
/** Setter for property conversionValue.
* @param conversionValue New value of property conversionValue.
*
*/
public void setConversionValue(double conversionValue) {
this.conversionValue = conversionValue;
}
private static Unit[] units = null;
private static HashMap<String,Unit> unitsMap = null;
public static Unit[] getStandardUnits()
{
if (units == null)
{
unitsMap = new HashMap<String,Unit>();
units = new Unit[4];
units[0] = new Unit("pixels",Unit.PIXEL, "pixels");
unitsMap.put("pixels", units[0]);
units[1] = new Unit("inches",Unit.INCHES, "inches");
unitsMap.put("inches", units[1]);
units[2] = new Unit("cm", Unit.CENTIMETERS, "cm");
unitsMap.put("cm", units[2]);
units[3] = new Unit("mm", Unit.MILLIMETERS, "mm");
unitsMap.put("mm", units[3]);
}
return units;
}
public static int getUnitIndex(String unitName)
{
Unit[] units = getStandardUnits();
for (int i=0; i<units.length; ++i)
{
if (units[i].getUnitName().equalsIgnoreCase(unitName)) return i;
}
return -1;
}
public String toString()
{
return getUnitName();
}
/**
* convert from pixel to the unit represented by this class
*
* @param pixel
* @return
*/
public double convert(int pixels)
{
return ((double)pixels)/conversionValue;
}
/**
* convert from pixel to the unit represented by this class
*
* @param pixel
* @return
*/
public long toPixel(double val)
{
return (long)(val*conversionValue);
}
static public double convertPixelsToInches(long pixels)
{
return ((double)pixels)/INCHES;
}
static public long convertInchesToPixels(double inches)
{
return (long)(inches*INCHES);
}
static public double convertPixelsToCentimeters(long pixels)
{
return ((double)pixels)/CENTIMETERS;
}
static public long convertCentimetersToPixels(double centimeters)
{
return (long)(centimeters*CENTIMETERS);
}
static public double convertPixelsToMillimeters(long pixels)
{
return ((double)pixels)/MILLIMETERS;
}
static public long convertMillimetersToPixels(double millimeters)
{
return (long)(millimeters*CENTIMETERS);
}
static public long convertToPixels(double value, double convert)
{
return (long)(value*convert);
}
static public Unit getUnit(String unitName)
{
if (unitsMap == null) getStandardUnits();
return unitsMap.get(unitName);
}
public String getKeyName() {
return keyName;
}
public void setKeyName(String keyName) {
this.keyName = keyName;
}
}
]]>