PolygonDrawingUtil 多边形绘制
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PolygonDrawingUtil
An efficient Android utility class for drawing regular polygons on a Canvas
.
Consumers can specify:
- number of sides (≥ 3);
- center coordinates;
- outer radius (center to vertex);
- corner rounding radius;
- polygon rotation;
- fill/stroke
Paint
.
Demo
This video was captured using the sample application in this repository. It provides convenient controls for exploringPolygonDrawingUtil
's capabilities.
Getting Started
Specify PolygonDrawingUtil as a dependency in your
build.gradle
file:dependencies { compile 'com.stkent:polygondrawingutil:1.0.0'}
Create a new
PolygonDrawingUtil
instance and assign it to a field in your custom view class:private PolygonDrawingUtil polygonDrawingUtil = new PolygonDrawingUtil();
Call
polygonDrawUtil.drawPolygon
in youronDraw
method:@Overrideprotected void onDraw(Canvas canvas) { super.onDraw(canvas); polygonDrawingUtil.drawPolygon( canvas, numberOfSides, centerX, centerY, polygonRadius, cornerRadius, rotation, polygonPaint);}
License
Copyright 2017 Stuart KentLicensed under the Apache License, Version 2.0 (the "License");you may not use this file except in compliance with the License.You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0Unless required by applicable law or agreed to in writing, softwaredistributed under the License is distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.See the License for the specific language governing permissions andlimitations under the License.
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