public class MyUnits {
public static final double PT_PER_PX = 0.75;
public static final int IN_PER_PT = 72;
public static final double CM_PER_PT = 28.3;
public static final double MM_PER_PT = 2.83;
public static final int EMU_PER_PX = 9525;
public static final int pxToEMU(double px) {
return DoubleUtils.mul(px, EMU_PER_PX).intValue();
}
public static final int emuToPx(double emu) {
return DoubleUtils.div(emu, EMU_PER_PX).intValue();
}
public static final double ptToPx(double pt) {
return DoubleUtils.div(pt, PT_PER_PX);
}
public static final double inToPx(double in) {
return DoubleUtils.mul(inToPt(in), PT_PER_PX);
}
public static final double pxToIn(double px) {
return ptToIn(pxToPt(px));
}
public static final double cmToPx(double cm) {
return DoubleUtils.mul(cmToPt(cm), PT_PER_PX);
}
public static final double pxToCm(double px) {
return ptToCm(pxToPt(px));
}
public static final double mmToPx(double mm) {
return DoubleUtils.mul(mmToPt(mm), PT_PER_PX);
}
public static final double pxToMm(double px) {
return ptToMm(pxToPt(px));
}
public static final double ptToIn(double pt) {
return DoubleUtils.div(pt, IN_PER_PT);
}
public static final double ptToMm(double mm) {
return DoubleUtils.div(mm, MM_PER_PT);
}
public static final double ptToCm(double in) {
return DoubleUtils.div(in, CM_PER_PT);
}
public static final double pxToPt(double px) {
return DoubleUtils.mul(px, PT_PER_PX);
}
public static final double inToPt(double in) {
return DoubleUtils.mul(in, IN_PER_PT);
}
public static final double mmToPt(double mm) {
return DoubleUtils.mul(mm, MM_PER_PT);
}
public static final double cmToPt(double cm) {
return DoubleUtils.mul(cm, CM_PER_PT);
}
}
public class DoubleUtils {
private static final Integer DEF_DIV_SCALE = 2;
public static Double add(Number value1, Number value2) {
return add(value1, value2, DEF_DIV_SCALE);
}
public static Double add(Number value1, Number value2, Integer scale) {
BigDecimal b1 = new BigDecimal(Double.toString(value1.doubleValue()));
BigDecimal b2 = new BigDecimal(Double.toString(value2.doubleValue()));
BigDecimal add = b1.add(b2);
BigDecimal setScale = add.setScale(scale, BigDecimal.ROUND_HALF_UP);
return setScale.doubleValue();
}
public static Double sub(Number value1, Number value2) {
return sub(value1, value2, DEF_DIV_SCALE);
}
public static Double sub(Number value1, Number value2, Integer scale) {
BigDecimal b1 = new BigDecimal(Double.toString(value1.doubleValue()));
BigDecimal b2 = new BigDecimal(Double.toString(value2.doubleValue()));
BigDecimal subtract = b1.subtract(b2);
BigDecimal setScale = subtract.setScale(scale, BigDecimal.ROUND_HALF_UP);
return setScale.doubleValue();
}
public static Double mul(Number value1, Number value2) {
return mul(value1, value2, DEF_DIV_SCALE);
}
public static Double mul(Number value1, Number value2, Integer scale) {
BigDecimal b1 = new BigDecimal(Double.toString(value1.doubleValue()));
BigDecimal b2 = new BigDecimal(Double.toString(value2.doubleValue()));
BigDecimal multiply = b1.multiply(b2);
BigDecimal setScale = multiply.setScale(scale, BigDecimal.ROUND_HALF_UP);
return setScale.doubleValue();
}
public static Double mul(Number value1, Number value2, int scale, int roundingMode) {
BigDecimal b1 = new BigDecimal(Double.toString(value1.doubleValue()));
BigDecimal b2 = new BigDecimal(Double.toString(value2.doubleValue()));
BigDecimal multiply = b1.multiply(b2);
BigDecimal setScale = multiply.setScale(scale, roundingMode);
return setScale.doubleValue();
}
public static Double div(Number dividend, Number divisor) {
return DoubleUtils.div(dividend, divisor, DEF_DIV_SCALE);
}
public static Double div(Number dividend, Number divisor, Integer scale) {
if (scale < 0) {
throw new IllegalArgumentException("The scale must be a positive integer or zero");
}
BigDecimal b1 = new BigDecimal(Double.toString(dividend.doubleValue()));
BigDecimal b2 = new BigDecimal(Double.toString(divisor.doubleValue()));
return b1.divide(b2, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}
public static Double div(Number dividend, Number divisor, Integer scale, int roundingMode) {
if (scale < 0) {
throw new IllegalArgumentException("The scale must be a positive integer or zero");
}
BigDecimal b1 = new BigDecimal(Double.toString(dividend.doubleValue()));
BigDecimal b2 = new BigDecimal(Double.toString(divisor.doubleValue()));
return b1.divide(b2, scale, roundingMode).doubleValue();
}
public static Double round(Double value, Integer scale) {
if (scale < 0) {
throw new IllegalArgumentException("The scale must be a positive integer or zero");
}
BigDecimal b = new BigDecimal(Double.toString(value));
BigDecimal one = new BigDecimal("1");
return b.divide(one, scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}
}