commonMain.ru.casperix.math.curve.float64.LazyCurve2d.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of math Show documentation

Simple set of geometric and other types

There is a newer version: 1.9.0

package ru.casperix.math.curve.float64

import ru.casperix.math.vector.float64.Vector2d

abstract class LazyCurve2d : Curve2d {
    override fun getTangent(t: Double): Vector2d {
        val smallValue = 0.0001
        if (t <= smallValue) {
            return (getPosition(t + smallValue) - getPosition(t)).normalize()
        } else if (t >= 1f - smallValue) {
            return (getPosition(t) - getPosition(t - smallValue)).normalize()
        } else {
            return (getPosition(t + smallValue) - getPosition(t - smallValue)).normalize()
        }
    }

    override fun invert(): Curve2d {
        TODO()
    }

    override fun getProjection(position: Vector2d): Double {
        return (0..10).map {
            val t = it / 10.0
            Pair(t, getPosition(t).distTo(position))
        }.minByOrNull { (_, dist)-> dist }!!.first
    }

}