从android.graphics.Path中取出Point点，Kotlin

    /*** 从一条Path中获取多少个Point点*/private fun getPoints(path: Path, pointCount: Int): Array<FloatPoint?> {val points = arrayOfNulls<FloatPoint>(pointCount)val pm = PathMeasure(path, false)val length = pm.lengthvar distance = 0fval speed = length / pointCountvar counter = 0val aCoordinates = FloatArray(2)while (distance < length && counter < pointCount) {// 从path中取出点Pointpm.getPosTan(distance, aCoordinates, null)points[counter] = FloatPoint(aCoordinates[0],aCoordinates[1])counter++distance += speed}return points}class FloatPoint(var x: Float, var y: Float)

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