Noratrieb/TriangleCalculator
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optimized

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nora 2020-12-01 19:45:05 +01:00
parent 7ad27481fe
commit a563b2be9b
4 changed files with 26 additions and 40 deletions
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66
src/main/kotlin/main.kt
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@ -1,5 +1,5 @@
import java.lang.IllegalArgumentException
import kotlin.math.*
import kotlin.reflect.KFunction
fun main() {
val triangle = Triangle(4.0, 3.0, 5.0)
@ -29,52 +29,19 @@ class Triangle() {
constructor(angleName: String, angleD: Double, sideName: String, side: Double) : this() {
val angle = angleD.toRadians() //thanks kotlin
when (angleName) {
"alpha" -> {
alpha = Angle(angleD, "alpha")
when (sideName) {
"a" -> {
a = Side(side, "a");
c = Side(a / sin(angle), "c")
b = Side(c * cos(angle), "b")
}
"b" -> {
b = Side(side, "b")
c = Side(b / cos(angle), "c")
a = Side(c * sin(angle), "a")
}
"c" -> {
c = Side(side, "c")
a = Side(c * sin(angle), "a")
b = Side(c * cos(angle), "a")
}
}
beta = Angle(asin(b.length / c.length).toDegree(), "beta")
assignSides(::sin, ::cos, angle, sideName, side)
}
"beta" -> {
beta = Angle(angleD, "beta")
when (sideName) {
"a" -> {
a = Side(side, "a");
c = Side(a / cos(angle), "c")
b = Side(c * sin(angle), "b")
}
"b" -> {
b = Side(side, "b")
c = Side(b / sin(angle), "c")
a = Side(c * cos(angle), "a")
}
"c" -> {
c = Side(side, "c")
a = Side(c * cos(angle), "a")
b = Side(c * sin(angle), "a")
}
}
assignSides(::cos, ::sin, angle, sideName, side)
}
else -> {
throw IllegalArgumentException("$angleName is not a valid angle")
throw IllegalArgumentException("Illegal angle $angle")
}
}
calculateAngles()
}
constructor(vararg sides: Double) : this() {
@ -84,6 +51,25 @@ class Triangle() {
calculateAngles()
}
private fun assignSides(func1: (Double) -> Double, func2: (Double) -> Double, angle: Double, sideName: String, side: Double){
when (sideName) {
"a" -> {
a = Side(side, "a");
c = Side(a / func1(angle), "c")
b = Side(c * func2(angle), "b")
}
"b" -> {
b = Side(side, "b")
c = Side(b / func2(angle), "c")
a = Side(c * func1(angle), "a")
}
"c" -> {
c = Side(side, "c")
a = Side(c * func1(angle), "a")
b = Side(c * func2(angle), "a")
}
}
}
private fun calculateAngles() {
alpha = Angle(asin(a.length / c.length).toDegree(), "alpha")
@ -96,7 +82,7 @@ class Triangle() {
override fun toString(): String {
return "Seiten: $a, $b, $c Winkel: $alpha $beta $gamma"
return "Sides: $a, $b, $c Angles: $alpha $beta $gamma"
}
}