Class LoadPly

src/main/java/trace/graphics/LoadPly.kt:11–117

import field.utility.remAssign
import field.utility.times

import java.io.BufferedReader
import java.io.File
import java.io.FileNotFoundException
import java.io.FileReader
import java.io.IOException
import java.io.RandomAccessFile
import java.nio.ByteOrder
import java.nio.FloatBuffer
import java.nio.MappedByteBuffer
import java.nio.channels.FileChannel.MapMode
import java.util.ArrayList


class LoadPly {

    private var reader: BufferedReader? = null
    var points: ArrayList<Point> = ArrayList()
    var filename: String? = null

    data class Point(val at: Vec3, val color: Vec3?, val normal: Vec3?) {
    }

    @Throws(IOException::class)
    protected constructor() {
    }

    @Throws(IOException::class)
    constructor(filename: String) {
        this.filename = filename
        points = ArrayList()

        add(filename)
    }

    var first = true

    fun show(layer: Stage.ShaderGroup, name: String, size: Float) {
        val v = layer.pointBuilder(name)

        v.open()
        v.aux(2, size)
        points.forEach {
            v.aux(1, it.color)
            if (it.normal != null)
                v.aux(4, it.normal)
            if (it.color != null)
                v.aux(1, it.color)
            v.v(it.at)
        }
        v.close()
    }

    fun planarRotate(center: Vec3, up: Vec3, amount: Float) {
        val q = Quat().setAngleAxis(amount.toDouble(), up.normalize())

        points.forEach {
            val d = (it.at.x - center.x) * up.x + (it.at.y - center.y) * up.y + (it.at.z - center.z) * up.z;