From 59f53119badf0fcb32615b964f6124dcab9b86e5 Mon Sep 17 00:00:00 2001
From: lizhanwei <Dana_Lee1016@126.com>
Date: 星期三, 18 三月 2020 15:19:33 +0800
Subject: [PATCH] 修改Utils增加对double保留几位小数
---
app/src/main/java/safeluck/drive/evaluation/util/Utils.java | 26 +++++++++++++++++++-------
1 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/app/src/main/java/safeluck/drive/evaluation/util/Utils.java b/app/src/main/java/safeluck/drive/evaluation/util/Utils.java
index b53bcf2..34cfd02 100644
--- a/app/src/main/java/safeluck/drive/evaluation/util/Utils.java
+++ b/app/src/main/java/safeluck/drive/evaluation/util/Utils.java
@@ -10,6 +10,7 @@
import com.anyun.exam.lib.util.ByteUtil;
import com.safeluck.aykj.utils.BytesUtils;
+import java.math.BigDecimal;
import java.security.SecureRandom;
import java.util.Calendar;
import java.util.Random;
@@ -321,9 +322,9 @@
int unsignedTime= parseUnsignedInt(String.valueOf(longCurrTIme),10);
System.out.println("unsigned int time = "+unsignedTime);
-Point p1 = new Point(1.0,2.0);
-Point p2 = new Point(3.0,4.0);
- System.out.println(Calc3Point(p1,p2,5.0).toString());
+Point p1 = new Point(1.0,5.0);
+Point p2 = new Point(3.0,5.0);
+ System.out.println(Calc3Point(p1,p2,10.0).toString());
}
public static Point Calc3Point(Point p1,Point p2,double L ){
@@ -365,10 +366,12 @@
}
y3 = k * x3 + b;
+
p3.setX(x3);
p3.setY(y3);
p3 = rotatePoint(p3, p2, 270);
+
return p3;
@@ -380,11 +383,20 @@
private static Point rotatePoint(Point oldPoint,Point centre,double degree){
Point newPoint = new Point(0.0,0.0);
- newPoint.setX((oldPoint.getX()-centre.getX())*cos(toRadians(degree)) -
- (oldPoint.getY()-centre.getY())*sin(toRadians(degree)) + centre.getX()) ;
- newPoint.setY( (oldPoint.getX()-centre.getX())*sin(toRadians(degree))
- + (oldPoint.getY()-centre.getY())*cos(toRadians(degree)) + centre.getY());
+ newPoint.setX(getdouble((oldPoint.getX()-centre.getX())*cos(toRadians(degree)) -
+ (oldPoint.getY()-centre.getY())*sin(toRadians(degree)) + centre.getX(),6)) ;
+ newPoint.setY(getdouble( (oldPoint.getX()-centre.getX())*sin(toRadians(degree))
+ + (oldPoint.getY()-centre.getY())*cos(toRadians(degree)) + centre.getY(),6));
return newPoint;
}
+
+ /**
+ * 瀵筪ouble淇濈暀鍑犱綅灏忔暟
+ */
+ public static Double getdouble(Double d,int reserve) {
+
+ BigDecimal b= new BigDecimal(d);
+ return b.setScale(reserve, BigDecimal.ROUND_HALF_UP).doubleValue();
+ }
}
--
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