Kotlin -Hexagonal握把Google Maps API V3-优化代码

Question

我需要一些帮助才能优化我的代码。即使它起作用，我有强烈的感觉，但它可以用更少的代码行和更有效地制作。但是我自己无法弄清楚。

实际上它甚至还没有完美。

我在中心有一个标记。我希望这个中心成为Google Maps上的多边形六角形网格的中心。

在设置用户的应用程序中，用户可以设置他想在北，东，西方和南方的六角形数量。因此，我想实现的是从我的十六进制网格中心开始绘制所有这些六角形。

在这里，您找到了我的代码，这给了我一些东西，但不是完全正确的。

private fun drawHexagonGrid(){
        var radius = 3.5  //radius in metre
        var curPos = heartAlveole  //hierdann Heart Alveole aus den Prefs nehmen
        var northAlveoles = 5  //Das alles aus den Prefs holen.
        var eastAlveoles = 10
        var southAlveoles = 5
        var westAlveoles = 5
        val width = radius.toDouble() * 2.0 * Math.sqrt(3.0) / 2

        //North East of Heart
        curPos = heartAlveole
        for (n in 0..northAlveoles){
            //East Alveoles
            for (i in 0..eastAlveoles) {
                drawHorizontalHexagon(curPos, radius, ".")
                curPos = SphericalUtil.computeOffset(curPos, width,90.0);
            }
            curPos = SphericalUtil.computeOffset(curPos, width*eastAlveoles,270.0)
            //Every Second Iteration go half width west or east
            if (n % 2 == 0) {
                curPos = SphericalUtil.computeOffset(curPos, width/2,270.0)
            }
            else {
                curPos = SphericalUtil.computeOffset(curPos, width/2,90.0)
            }
            //go north
            curPos = SphericalUtil.computeOffset(curPos,5.25 ,0.0)
        }
        //North West of Heart
        curPos = heartAlveole
        for (n in 0..northAlveoles){
            //East Alveoles
            for (i in 0..westAlveoles) {
                drawHorizontalHexagon(curPos, radius, ".")
                curPos = SphericalUtil.computeOffset(curPos, width,270.0);
            }
            curPos = SphericalUtil.computeOffset(curPos, width*westAlveoles,90.0)
            //Every Second Iteration go half width west or east
            if (n % 2 == 0) {
                curPos = SphericalUtil.computeOffset(curPos, width/2,270.0)
            }
            else {
                curPos = SphericalUtil.computeOffset(curPos, width/2,90.0)
            }
            //go north
            curPos = SphericalUtil.computeOffset(curPos,5.25 ,0.0)
        }
        //South East of Heart
        curPos= heartAlveole
        for (n in 0..southAlveoles){
            //Every Second Iteration go half width west or east
            if (n % 2 == 0) {
                curPos = SphericalUtil.computeOffset(curPos, width/2,270.0)
            }
            else {
                curPos = SphericalUtil.computeOffset(curPos, width/2,90.0)
            }
            //go south
            curPos = SphericalUtil.computeOffset(curPos,5.25 ,180.0)
            //East Alveoles
            for (i in 0..eastAlveoles) {
                drawHorizontalHexagon(curPos, radius, ".")
                curPos = SphericalUtil.computeOffset(curPos, width,90.0);
            }
            curPos = SphericalUtil.computeOffset(curPos, width*eastAlveoles,270.0)

        }
        //South West of Heart
        curPos= heartAlveole
        for (n in 0..southAlveoles){
            //Every Second Iteration go half width west or east
            if (n % 2 == 0) {
                curPos = SphericalUtil.computeOffset(curPos, width/2,270.0)
            }
            else {
                curPos = SphericalUtil.computeOffset(curPos, width/2,90.0)
            }
            //go south
            curPos = SphericalUtil.computeOffset(curPos,5.25 ,180.0)
            //West Alveoles
            for (i in 0..westAlveoles) {
                drawHorizontalHexagon(curPos, radius, ".")
                curPos = SphericalUtil.computeOffset(curPos, width,270.0);
            }
            curPos = SphericalUtil.computeOffset(curPos, width*westAlveoles,90.0)
        }

    }
    private fun drawHorizontalHexagon(position : LatLng, radius : Double, label : String){
        var coordinates : MutableList<LatLng> = arrayListOf()
        for (angle in 0..360 step 60) {
            coordinates.add(SphericalUtil.computeOffset(position,radius,angle.toDouble()))
        }
        var opts : PolygonOptions = PolygonOptions().addAll(coordinates)
            .fillColor(Color.argb(35,255, 0,0))
            .strokeColor(Color.RED).strokeWidth(3f)
        mMap.addPolygon(opts)

        //Funktioniert theoretisch. Noch überlegen ob ich es wirklich brauche.
        //Müsste noch das Transparent ändern und die Größe der Schrift anpassen.
        //this.showText(position, label)
    }

您可以看到，我具有drawhexagon函数。以及一些循环功能。向南行驶，您必须在向左或向右的半宽度之间进行迭代。它的外观不那么微不足道;）

感谢您的所有帮助！

Answer 1

我自己找到了答案。如果某人有同样的问题，我将在此处将其发布在此处。

private fun drawHexagonGrid(){
    var radius = 3.5  //radius in metre
    var curPos = heartAlveole  //hierdann Heart Alveole aus den Prefs nehmen
    var northAlveoles = 5  //Das alles aus den Prefs holen.
    var eastAlveoles = 10
    var southAlveoles = 5
    var westAlveoles = 5
    val width = radius.toDouble() * 2.0 * Math.sqrt(3.0) / 2

    //Move to NorthWest Corner of HexGrid
    val westMove = if (northAlveoles % 2 == 0) width*westAlveoles else (width*westAlveoles)-(width/2)
    //If northAlveoles is unequal, add half width to westMove to
    curPos = SphericalUtil.computeOffset(curPos,westMove,270.0)
    curPos = SphericalUtil.computeOffset(curPos,radius * 6/4*northAlveoles,0.0)
    //nested for loop to produce hexagonal grid
    for (n in 1..northAlveoles+southAlveoles+1){
        //draw horizontal hexagons
        for (e in 1..eastAlveoles+westAlveoles+1) {
            drawHorizontalHexagon(curPos, radius, ".")
            curPos = SphericalUtil.computeOffset(curPos, width,90.0);
        }
        //Go back to the initial position + width/2 or - width/2 every second iteration
        if (n % 2 == 0) {
            curPos = SphericalUtil.computeOffset(curPos, width*((westAlveoles+eastAlveoles)+0.5),270.0)
        } else {
            curPos = SphericalUtil.computeOffset(curPos, width*((westAlveoles+eastAlveoles)+1.5),270.0)
        }
        //go south
        curPos = SphericalUtil.computeOffset(curPos,radius * 6/4 ,180.0)
    }
}