| | |
| | | <component name="GradleSettings"> |
| | | <option name="linkedExternalProjectsSettings"> |
| | | <GradleProjectSettings> |
| | | <option name="testRunner" value="PLATFORM" /> |
| | | <option name="testRunner" value="GRADLE" /> |
| | | <option name="distributionType" value="DEFAULT_WRAPPED" /> |
| | | <option name="externalProjectPath" value="$PROJECT_DIR$" /> |
| | | <option name="gradleHome" value="D:/gradle-4.4" /> |
| | |
| | | </set> |
| | | </option> |
| | | <option name="resolveModulePerSourceSet" value="false" /> |
| | | <option name="useQualifiedModuleNames" value="true" /> |
| | | </GradleProjectSettings> |
| | | </option> |
| | | </component> |
| | |
| | | System.out.println(String.format("角度 坐标计算:a:%s,b:%s,c:%s",getDegrees(pA,pB,pC),getDegrees(pB,pC,pA),getDegrees(pC,pA,pB))); |
| | | System.out.println(String.format("角度 转换为边长计算:a:%s,b:%s,c:%s",getDegrees2(pA,pB,pC),getDegrees2(pB,pC,pA),getDegrees2(pC,pA,pB))); |
| | | System.out.println(String.format("角度 边长计算:a:%s,b:%s,c:%s",getDegrees(a,b,c),getDegrees(b,c,a),getDegrees(c,a,b))); |
| | | System.out.println("边长 c:"+getLengthOfHypotenuse(a,b )); |
| | | System.out.println("边长 c:"+getHypotenuseFromLength(a,b )); |
| | | System.out.println("边长 c:"+getLengthOfSide(a,b ,getDegrees2(pA,pB,pC))); |
| | | System.out.format("%s 度的余弦值为 %s", Math.toRadians(90), Math.cos(Math.toRadians(90))); |
| | | } |
| | | |
| | | |
| | | /************************直角三角算法*******************************/ |
| | | |
| | | /** |
| | | * 直角三角获取斜边 |
| | |
| | | * @param b 直角边长 |
| | | * @return 斜边边长 |
| | | */ |
| | | public static Double getLengthOfHypotenuse(double a,double b){ |
| | | public static Double getHypotenuseFromLength(double a,double b){ |
| | | return Math.sqrt(a*a+b*b); |
| | | } |
| | | |
| | | /** |
| | | * 直角三角形 根据角度和直角边长求斜边 |
| | | * @param degree 角度 |
| | | * @param width 直角边长 |
| | | * @return 斜边边长 |
| | | */ |
| | | public static double getHypotenuseFromDegree(double degree,double width){ |
| | | double cos = Math.cos(Math.toRadians(degree));//余弦 |
| | | return width / cos; |
| | | } |
| | | |
| | | /** |
| | | * 直角三角形 根据角度和斜边求直角边 |
| | | * @param degree 角度 |
| | | * @param width 斜边 |
| | | * @return 斜边边长 |
| | | */ |
| | | public static double getRightSideFromDegree(double degree,double width){ |
| | | double cos = Math.cos(Math.toRadians(degree)); |
| | | return width * cos; |
| | | } |
| | | |
| | | /** |
| | | * 直角三角形 根据直角边和斜边求直角边 |
| | | * @param a 直角边 |
| | | * @param b 斜边 |
| | | * @return 直角边长 |
| | | */ |
| | | public static double getRightSideFromLength(double a,double b){ |
| | | return Math.sqrt(b*b - a*a); |
| | | } |
| | | |
| | | |
| | | |
| | | /************************end 直角三角算法*******************************/ |
| | | |
| | | /** |
| | | * 根据 B角和C角的a边长,获取A角-C角的b边长 |
| | | * @param A |
| | | * @param B |
| | | * @param a |
| | | * @return |
| | | */ |
| | | public static double getSideFromSideAndDegree(double A,double B,double a){ |
| | | // a÷sin A == b ÷ sin B |
| | | return a/Math.sin(Math.toRadians(A))*Math.sin(Math.toRadians(B)); |
| | | } |
| | | |
| | | /** |
| | |
| | | return (int) (180 * radian / Math.PI); |
| | | } |
| | | |
| | | /* *//** |
| | | /** |
| | | * 根据坐标 获取角度 |
| | | * @param pA 坐标 |
| | | * @param degreesPoint 坐标 获取该点的角度 |