Java tutorial
//package com.java2s; import java.util.ArrayList; import java.util.List; import android.graphics.RectF; import android.util.Log; public class Main { public static List<RectF> createBoundLines(RectF baseRect, final float graphSideZoom) { Log.d("GammaGraph", "function createBoundLines"); List<RectF> boundLines = new ArrayList<RectF>(); final float drawRectSide = baseRect.right - baseRect.left; final float rectSideQuadDiv = drawRectSide / 4; for (int i = 1; i <= 3; i++) { final float linePos = i * rectSideQuadDiv; RectF boundLine1 = new RectF(baseRect.left + linePos, baseRect.top + 1, baseRect.left + linePos, baseRect.bottom - 1); RectF boundLine2 = new RectF(baseRect.left + 1, baseRect.top + linePos, baseRect.right - 1, baseRect.top + linePos); boundLines.add(boundLine1); boundLines.add(boundLine2); } return boundLines; } }