1 /* 2 * Copyright 2012 AndroidPlot.com 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.androidplot.xy; 18 19 import android.graphics.Path; 20 import android.graphics.PointF; 21 22 /** 23 * WARNING: This is an unfinished class. Series drawn by this implementation may look nice 24 * but they are not yet accurate representations of the control points from which they are derived. 25 */ 26 public class BezierLineAndPointRenderer extends LineAndPointRenderer<BezierLineAndPointFormatter> { 27 public BezierLineAndPointRenderer(XYPlot plot) { 28 super(plot); 29 } 30 31 @Override 32 protected void appendToPath(Path path, PointF thisPoint, PointF lastPoint) { 33 //path.lineTo(thisPoint.x, thisPoint.y); 34 35 // bezier curve version: 36 PointF mid = new PointF(); 37 mid.set((lastPoint.x + thisPoint.x) / 2, (lastPoint.y + thisPoint.y) / 2); 38 path.quadTo((lastPoint.x + mid.x) / 2, lastPoint.y, mid.x, mid.y); 39 //path.quadTo((mid.x + thisPoint.x) / 2, thisPoint.y, thisPoint.x, thisPoint.y); 40 path.quadTo((mid.x + thisPoint.x) / 2, lastPoint.y, thisPoint.x, thisPoint.y); 41 42 } 43 } 44
