使用Android原生canvas绘制炫酷的太极八卦图

2023-11-26 19:59
文章标签 android 使用 绘制 canvas 原生 炫酷 太极 八卦图

本文主要是介绍使用Android原生canvas绘制炫酷的太极八卦图，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

内部的太极以及外部的八卦环都可以调节不同的速度和方向，实现效果：

、

 原代码：

EightDiagrams：
package com.hjq.myapplication;import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;public class EightDiagrams extends View {private final Paint mPaint;private final Paint whitePaint;   //白色画笔private final Paint blackPaint;private final Paint outlinePaint;   //轮廓画笔float mWidth;                 //控件宽float mHeight;                //控件高float mOutlineR1;float mOutlineR2;float mOutlineR3;float mOutlineR4;float mOutlineR5;private final String[][] listR1;private final String[] listR2;private final String[] listR3;private final String[] listR4;private final String[] listR5;private float degrees_tai = 0;          //旋转角度public EightDiagrams(Context context) {this(context, null);}public EightDiagrams(Context context, AttributeSet attrs) {this(context, attrs, 0);}public EightDiagrams(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);//路径whitePaint = new Paint();whitePaint.setAntiAlias(true);whitePaint.setColor(Color.WHITE);blackPaint = new Paint();blackPaint.setAntiAlias(true);blackPaint.setColor(Color.BLACK);mPaint = new Paint();mPaint.setAntiAlias(true);mPaint.setStyle(Paint.Style.FILL);outlinePaint = new Paint();outlinePaint.setAntiAlias(true);outlinePaint.setStyle(Paint.Style.STROKE);outlinePaint.setColor(Color.parseColor("#000000"));listR1 = new String[][]{{"|","|","|",""},{"¦","¦","¦",""},{"|","¦","¦",""},{"¦","|","¦",""},{"¦","|","|",""},{"¦","¦","|",""},{"|","¦","|",""},{"|","|","¦",""},{"","","",""}, {"☰","☷","☳","☵","☴","☶","☲","☱",""}};listR2 = new String[]{"申", "庚", "酉", "辛", "戌", "乾", "亥", "壬", "子", "癸", "丑", "艮","寅", "甲", "卯", "乙", "辰", "巽", "巳", "丙", "午", "丁", "未", "坤", ""};listR3 = new String[]{"天厨","天市","天梧","天苑","天命","天宫","天","太乙","天屏","太徽","天广","南极","天常","天境","天开","天汉","少徽","天乙","天魁","天廊","天皇","天铺","天叠","阴光",""};listR4 = new String[]{"夬", "乾", "姤", "大过", "鼎", "恒", "巽", "井", "蛊", "升", "诉", "困","未济", "解", "涣", "坎", "蒙", "师", "遯", "咸", "旅", "小过", "渐", "蹇", "艮","谦","否","萃","晋","豫","观","比","剥","坤","蕧","颐","屯","益","震","嘘咳","随","无安","明夷","贵","既济","家人","丰","难","革","同人","临","损","节","中孚","归妹","睽","兑","履","泰","大畜","需","小畜","大壮","否","萃","晋","豫","观","比","剥","坤","大有","离",""};listR5 = new String[]{"水","木","水","木","土","金","火","土","水","木","土","金","火","水","木","土","金","火","金","木","水","火","火","土","火","水","木","土","金","火","金","木","水","火","火","土","水","木","土","金","火","金","木","水","火","火","土","火","土","水","木","土","金","火","金","木","水","火","土","火",""};}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);int width = measureWidth(widthMeasureSpec);int height = measureHeight(heightMeasureSpec);setMeasuredDimension(width, height);mWidth = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();mHeight = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();}private int measureHeight(int measureSpec) {int mode = MeasureSpec.getMode(measureSpec);int val = MeasureSpec.getSize(measureSpec);int result = 0;switch (mode) {case MeasureSpec.EXACTLY:result = val;break;case MeasureSpec.AT_MOST:case MeasureSpec.UNSPECIFIED:break;}result = mode == MeasureSpec.AT_MOST ? Math.min(result, val) : result;return result + getPaddingTop() + getPaddingBottom();}private int measureWidth(int measureSpec) {int mode = MeasureSpec.getMode(measureSpec);int val = MeasureSpec.getSize(measureSpec);int result = 0;switch (mode) {case MeasureSpec.EXACTLY:result = val;break;case MeasureSpec.AT_MOST:case MeasureSpec.UNSPECIFIED:break;}result = mode == MeasureSpec.AT_MOST ? Math.min(result, val) : result;return result + getPaddingLeft() + getPaddingRight();}@Overrideprotected void onLayout(boolean changed, int left, int top, int right, int bottom) {super.onLayout(changed, left, top, right, bottom);mOutlineR1 = mWidth * 0.17f;mOutlineR2 = mWidth * 0.24f;mOutlineR3 = mWidth * 0.307f;mOutlineR4 = mWidth * 0.371f;mOutlineR5 = mWidth * 0.432f;}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);if (canvas == null)return;canvas.drawColor(Color.parseColor("#fff7f9fa"));//填充背景canvas.save();canvas.translate(mWidth / 2, mHeight / 2);//原点移动到中心//绘制各元件，后文会涉及到drawCenterInfo(canvas);drawOutline(canvas);}@SuppressLint("SuspiciousIndentation")private void drawOutline(Canvas canvas) {outlinePaint.setStrokeWidth(mWidth/350);mPaint.setColor(Color.WHITE);mPaint.setAlpha(255);mPaint.setTextAlign(Paint.Align.CENTER);mPaint.setTextSize(mWidth * 0.06f);mPaint.setColor(Color.parseColor("#000000"));//第一层canvas.save();canvas.rotate(-degrees_tai/4);canvas.drawCircle(0, 0, mOutlineR1, outlinePaint);for (int i = 0; i <= 8; i++) {double angle = 2 * Math.PI / 8 * i+Math.PI / 8 ;canvas.drawLine((float) StrictMath.cos(angle) * mWidth / 10, (float) StrictMath.sin(angle) * mWidth / 10,(float) StrictMath.cos(angle) * mOutlineR1, (float) StrictMath.sin(angle) * mOutlineR1, outlinePaint);canvas.save();float iDeg1 = 360 / 8f * i;canvas.rotate(iDeg1,0,0);mPaint.setTextAlign(Paint.Align.RIGHT);for (int j=0;j<=2;j++)canvas.drawText(listR1[i][j],  mOutlineR1*(0.9f-j*0.1f), getCenteredY()+mOutlineR1*0.28f, mPaint);canvas.restore();}canvas.restore();//第二层mPaint.setTextSize(mWidth * 0.03f);canvas.save();canvas.rotate(degrees_tai/6);canvas.drawCircle(0, 0, mOutlineR2, outlinePaint);for (int i = 0; i <= 24; i++) {double angle = 2 * Math.PI / 24f * i+5;canvas.drawLine((float) StrictMath.cos(angle) * mOutlineR1, (float) StrictMath.sin(angle) * mOutlineR1,(float) StrictMath.cos(angle) * mOutlineR2, (float) StrictMath.sin(angle) * mOutlineR2, outlinePaint);canvas.save();float iDeg1 = 360 / 24f * i;canvas.rotate(iDeg1);mPaint.setTextAlign(Paint.Align.RIGHT);canvas.drawText(listR2[i],  mOutlineR2*0.9f, getCenteredY(), mPaint);canvas.restore();}canvas.restore();//第三层mPaint.setTextSize(mWidth * 0.028f);canvas.save();canvas.rotate(-degrees_tai/6);canvas.drawCircle(0, 0, mOutlineR3, outlinePaint);for (int i = 0; i <= 24; i++) {double angle = 2 * Math.PI / 24f * i+5;canvas.drawLine((float) StrictMath.cos(angle) * mOutlineR2, (float) StrictMath.sin(angle) * mOutlineR2,(float) StrictMath.cos(angle) * mOutlineR3, (float) StrictMath.sin(angle) * mOutlineR3, outlinePaint);canvas.save();float iDeg1 = 360 / 24f * i;canvas.rotate(iDeg1);mPaint.setTextAlign(Paint.Align.RIGHT);canvas.drawText(listR3[i],  mOutlineR3*0.965f, getCenteredY(), mPaint);canvas.restore();}canvas.restore();//第四层mPaint.setTextSize(mWidth * 0.02f);canvas.save();canvas.rotate(degrees_tai/18);canvas.drawCircle(0, 0, mOutlineR4, outlinePaint);for (int i = 0; i <= 72; i++) {double angle = 2 * Math.PI / 72f * i+2;canvas.drawLine((float) StrictMath.cos(angle) * mOutlineR3, (float) StrictMath.sin(angle) * mOutlineR3,(float) StrictMath.cos(angle) * mOutlineR4, (float) StrictMath.sin(angle) * mOutlineR4, outlinePaint);canvas.save();float iDeg1 = 360 / 72f * i;canvas.rotate(iDeg1);mPaint.setTextAlign(Paint.Align.RIGHT);canvas.drawText(listR4[i],  mOutlineR4*0.95f, getCenteredY(), mPaint);canvas.restore();}canvas.restore();//第五层mPaint.setTextSize(mWidth * 0.025f);canvas.save();canvas.rotate(-degrees_tai/15);canvas.drawCircle(0, 0, mOutlineR5, outlinePaint);for (int i = 0; i <= 60; i++) {double angle = 2 * Math.PI / 60f * i+2;canvas.drawLine((float) StrictMath.cos(angle) * mOutlineR4, (float) StrictMath.sin(angle) * mOutlineR4,(float) StrictMath.cos(angle) * mOutlineR5, (float) StrictMath.sin(angle) * mOutlineR5, outlinePaint);canvas.save();float iDeg1 = 360 / 60f * i;canvas.rotate(iDeg1);mPaint.setTextAlign(Paint.Align.RIGHT);canvas.drawText(listR5[i],  mOutlineR5*0.95f, getCenteredY(), mPaint);canvas.restore();}canvas.restore();}//绘制太极private void drawCenterInfo(Canvas canvas) {canvas.save();canvas.rotate(degrees_tai);//绘制两个半圆int radius = (int) (Math.min(mWidth, mHeight) / 10);             //太极半径RectF rect = new RectF(-radius, -radius, radius, radius);   //绘制区域canvas.drawArc(rect, 90, 180, true, blackPaint);            //绘制黑色半圆canvas.drawArc(rect, -90, 180, true, whitePaint);           //绘制白色半圆//绘制两个小圆int smallRadius;   //小圆半径为大圆的一般smallRadius = radius / 2;canvas.drawCircle(0, -smallRadius, smallRadius, blackPaint);canvas.drawCircle(0, smallRadius, smallRadius, whitePaint);//绘制鱼眼（两个更小的圆）canvas.drawCircle(0, -smallRadius, smallRadius >> 2, whitePaint);canvas.drawCircle(0, smallRadius, smallRadius >> 2, blackPaint);canvas.restore();}public void setRotate(float degrees_tai) {this.degrees_tai = degrees_tai;invalidate();                   //重绘界面}/*** 中间对齐**/private float getCenteredY() {Paint.FontMetrics fontMetrics = mPaint.getFontMetrics();return mPaint.getFontSpacing() / 2 - 4*fontMetrics.bottom;}}

EightDiagramsActivity：

package com.hjq.myapplication;import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;public class EightDiagramsActivity extends Activity {private EightDiagrams eightDiagrams;private final Handler handler = new Handler(Looper.getMainLooper()) {private float degrees = 0;@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);eightDiagrams.setRotate(degrees += msg.what);this.sendEmptyMessageDelayed(msg.what, 50);}};@SuppressLint("MissingInflatedId")@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_eight_diagrams);eightDiagrams = findViewById(R.id.eight_diagrams_id);eightDiagrams.setOnClickListener(v -> {handler.removeCallbacksAndMessages(null);handler.removeMessages(2);handler.sendEmptyMessageDelayed(30, 30);handler.postDelayed(() -> {handler.removeCallbacksAndMessages(null);handler.removeMessages(30);handler.sendEmptyMessageDelayed(2, 30);}, 1000);});}@Overrideprotected void onDestroy() {super.onDestroy();handler.removeCallbacksAndMessages(null);finish();}}

 activity_eight_diagrams.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"xmlns:app="http://schemas.android.com/apk/res-auto"android:orientation="vertical"><com.hjq.myapplication.EightDiagramsandroid:id="@+id/eight_diagrams_id"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginLeft="20dp"android:layout_marginRight="20dp"android:layout_marginBottom="20dp" /></LinearLayout>

这篇关于使用Android原生canvas绘制炫酷的太极八卦图的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/426234。

相关文章

Python常用命令提示符使用方法详解

Python常用命令提示符使用方法详解

《Python常用命令提示符使用方法详解》在学习python的过程中,我们需要用到命令提示符(CMD)进行环境的配置,：本文主要介绍Python常用命令提示符使用方法的相关资料,文中通过代码介绍的... 目录一、python环境基础命令【Windows】1、检查Python是否安装2、 查看Python的安
阅读更多...
Python并行处理实战之如何使用ProcessPoolExecutor加速计算

Python并行处理实战之如何使用ProcessPoolExecutor加速计算

《Python并行处理实战之如何使用ProcessPoolExecutor加速计算》Python提供了多种并行处理的方式,其中concurrent.futures模块的ProcessPoolExecu... 目录简介完整代码示例代码解释1. 导入必要的模块2. 定义处理函数3. 主函数4. 生成数字列表5.
阅读更多...
Python中help()和dir()函数的使用

Python中help()和dir()函数的使用

《Python中help()和dir()函数的使用》我们经常需要查看某个对象（如模块、类、函数等）的属性和方法,Python提供了两个内置函数help()和dir(),它们可以帮助我们快速了解代... 目录1. 引言2. help() 函数2.1 作用2.2 使用方法2.3 示例(1) 查看内置函数的帮助(
阅读更多...
Linux脚本(shell)的使用方式

Linux脚本(shell)的使用方式

《Linux脚本(shell)的使用方式》：本文主要介绍Linux脚本(shell)的使用方式,具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教... 目录概述语法详解数学运算表达式Shell变量变量分类环境变量Shell内部变量自定义变量：定义、赋值自定义变量：引用、修改、删
阅读更多...
Java使用HttpClient实现图片下载与本地保存功能

Java使用HttpClient实现图片下载与本地保存功能

《Java使用HttpClient实现图片下载与本地保存功能》在当今数字化时代,网络资源的获取与处理已成为软件开发中的常见需求,其中,图片作为网络上最常见的资源之一,其下载与保存功能在许多应用场景中都... 目录引言一、Apache HttpClient简介二、技术栈与环境准备三、实现图片下载与保存功能1.
阅读更多...
Python中使用uv创建环境及原理举例详解

Python中使用uv创建环境及原理举例详解

《Python中使用uv创建环境及原理举例详解》uv是Astral团队开发的高性能Python工具,整合包管理、虚拟环境、Python版本控制等功能,：本文主要介绍Python中使用uv创建环境及... 目录一、uv工具简介核心特点：二、安装uv1. 通过pip安装2. 通过脚本安装验证安装：配置镜像源（可
阅读更多...
LiteFlow轻量级工作流引擎使用示例详解

LiteFlow轻量级工作流引擎使用示例详解

《LiteFlow轻量级工作流引擎使用示例详解》：本文主要介绍LiteFlow是一个灵活、简洁且轻量的工作流引擎,适合用于中小型项目和微服务架构中的流程编排,本文给大家介绍LiteFlow轻量级工... 目录1. LiteFlow 主要特点2. 工作流定义方式3. LiteFlow 流程示例4. LiteF
阅读更多...
使用Python开发一个现代化屏幕取色器

使用Python开发一个现代化屏幕取色器

《使用Python开发一个现代化屏幕取色器》在UI设计、网页开发等场景中,颜色拾取是高频需求,：本文主要介绍如何使用Python开发一个现代化屏幕取色器,有需要的小伙伴可以参考一下... 目录一、项目概述二、核心功能解析2.1 实时颜色追踪2.2 智能颜色显示三、效果展示四、实现步骤详解4.1 环境配置4.
阅读更多...
使用jenv工具管理多个JDK版本的方法步骤

使用jenv工具管理多个JDK版本的方法步骤

《使用jenv工具管理多个JDK版本的方法步骤》jenv是一个开源的Java环境管理工具,旨在帮助开发者在同一台机器上轻松管理和切换多个Java版本,：本文主要介绍使用jenv工具管理多个JD... 目录一、jenv到底是干啥的？二、jenv的核心功能（一）管理多个Java版本（二）支持插件扩展（三）环境隔
阅读更多...
SQL中JOIN操作的条件使用总结与实践

SQL中JOIN操作的条件使用总结与实践

《SQL中JOIN操作的条件使用总结与实践》在SQL查询中,JOIN操作是多表关联的核心工具,本文将从原理,场景和最佳实践三个方面总结JOIN条件的使用规则,希望可以帮助开发者精准控制查询逻辑... 目录一、ON与WHERE的本质区别二、场景化条件使用规则三、最佳实践建议1.优先使用ON条件2.WHERE用
阅读更多...

Copyright China编程 23002807@qq.com

沪ICP备2023033072号-2