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Java中的Canvas绘图源码实例
Java中的Canvas绘图源码实例，主要是画线条、弧线、圆角矩形、三角形、文字、圆形等简单的几何图形，主要是通过创建DrawingCanvas对象canvas，为canvas设置命令监听者，实现接口CommandListener的方法，把缓冲区图像的内容绘制到画布上，画图部分代码：
int w = getWidth(); // 画布的宽度
int h = getHeight(); // 画布的高度
Image buffer = Image.createImage(w, h); // 用于绘图的缓冲图像
Graphics gc = buffer.getGraphics(); // 获取缓冲图像的图形环境
// 清除画布
public void clearScreen() {
gc.setColor(255,255,255); // 设置绘图颜色为白色
gc.fillRect(0,0,w,h); // 把缓冲图像填充为白色
gc.setColor(255,0,0); // 设置绘图颜色为红色
}
// 绘制直线
public void drawLine() {
setTitle("直线"); // 设置画布的标题
clearScreen(); // 清除画布
gc.drawLine(10,10,w-20,h-20); // 绘制黑色直线
gc.setColor(0,0,255); // 设置绘图颜色为蓝色
gc.drawLine(10,h/2,w-10,h/2); // 绘制蓝色直线
}
// 绘制弧
public void drawArc() {
setTitle("弧线和填充弧");
clearScreen();
gc.drawArc(5,5,w/2-20,h/2-20,60,216); // 绘制弧线
gc.drawArc(5,h/2-10,w/2-20,h/2-20,0,360); // 绘制圆
gc.setColor(0,0,255);
gc.fillArc(w/2,5,w/2-20,h/2-20,60,216); // 绘制填充弧线
gc
- 2023-04-11 05:50:03下载
- 积分：1
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LVD
Lv分布是2011年提出的新的视频分布，可以在CFCR域对线性调频信号（LFM）进行参数估计和检测，在高速机动目标检测中也有重要的应用(Lv distribution is a new time frequency distribution, which proposed in 2011. It can estimate and detect the linear frequency modulation signal (LFM) in CFCR domain, and it also has important applications in high-speed maneuvering target detection)
- 2021-05-16 18:30:07下载
- 积分：1
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Girl power can only be the case, you want to be a member because I wanted to stu...
小妹,实力也只能这样了,好想成为会员呀,因为我想好好学习-Girl power can only be the case, you want to be a member because I wanted to study hard
- 2022-07-12 05:03:37下载
- 积分：1
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multisim硬件电路仿真（超多电路）
该资料为multisim仿真文件，里面包含很多模拟电路例程，比如低通滤波，高通滤波等(The information is Multisim Simulation file, which contains a lot of analog circuit routines, such as low pass filtering, high pass filtering, etc.)
- 2018-06-10 13:49:08下载
- 积分：1
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matlab_toolbox
该程序为matlab实现图像特点检测匹配拼接等功能(The program realizes the functions of image feature detection, matching and stitching for matlab)
- 2020-06-18 22:20:02下载
- 积分：1
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主控程序，协调内存，cpu直间缓存操作
主控程序，协调内存，cpu直间缓存操作-control procedures, coordination of memory, cpu cache operation between straight
- 2022-02-12 22:20:26下载
- 积分：1
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Access_print
一个access vba的源码，功能为根据读取xml，csv来实现数据分析，并保存到access db，生成报表，支持预览及打印功能，是用日语做的，说明书以及操作用的xml，csv也包含其中。(An access vba source code, function according to read xml, csv to data analysis, and save it to access db, generate reports, preview and printing support is done in Japanese, manuals, and operating with the xml, csv also included.)
- 2011-07-01 09:36:39下载
- 积分：1
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Izhikevich
izh神经元模型，matlab代码，单神经元放电，连续放电(izh model mad by matlab)
- 2021-04-19 20:58:51下载
- 积分：1
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内模pid控制
内模pid控制simulink实时控制框图，借助于dSPACE平台实现控制(The internal model PID control simulink real-time control block diagram, with the help of dSPACE platform to achieve control.)
- 2018-04-15 10:25:16下载
- 积分：1
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语音识别
说明： 实现语音识别波形，通过录一段语音，用matlab识别波形并对语音信号进行处理(The waveform of speech recognition is realized. By recording a speech, the waveform is recognized by MATLAB and the speech signal is processed)
- 2020-07-01 16:55:26下载
- 积分：1
