http:///https//wiki.microduino.cn/index.php?action=history&feed=atom&title=Matrix.drawCircle%28%29 Matrix.drawCircle() - 版本历史 2026-04-30T02:20:08Z 本wiki的该页面的版本历史 MediaWiki 1.30.0 https//wiki.microduino.cn/index.php?title=Matrix.drawCircle()&diff=21910&oldid=prev Yanglibin@microduino.cc：创建页面，内容为“{| style="width: 800px;" |- | <p style="color: #666666;font-size:220%">'''Matrix. drawCircle(x,y,r)'''</p> <br> <p style="color: #E87E05;font-size:135%">描述</p>...” 2017-07-27T01:39:30Z <p>创建页面，内容为“{| style=&quot;width: 800px;&quot; |- | &lt;p style=&quot;color: #666666;font-size:220%&quot;&gt;&#039;&#039;&#039;Matrix. drawCircle(x,y,r)&#039;&#039;&#039;&lt;/p&gt; &lt;br&gt; &lt;p style=&quot;color: #E87E05;font-size:135%&quot;&gt;描述&lt;/p&gt;...”</p> <p><b>新页面</b></p><div>{| style=&quot;width: 800px;&quot;<br /> |-<br /> |<br /> &lt;p style=&quot;color: #666666;font-size:220%&quot;&gt;'''Matrix. drawCircle(x,y,r)'''&lt;/p&gt;<br /> &lt;br&gt;<br /> &lt;p style=&quot;color: #E87E05;font-size:135%&quot;&gt;描述&lt;/p&gt;<br /> 画空心圆。<br /> &lt;br&gt;<br /> &lt;p style=&quot;color: #E87E05;font-size:135%&quot;&gt;参数&lt;/p&gt;<br /> *x：起点横坐标x<br /> *y：起点横坐标x<br /> *r：半径<br /> &lt;p style=&quot;color: #E87E05;font-size:135%&quot;&gt;返回值&lt;/p&gt;<br /> 无<br /> &lt;p style=&quot;color: #E87E05;font-size:135%&quot;&gt;示例&lt;/p&gt;<br /> 彩色点阵：[[Sensor-Dot Matrix-Color/zh]]<br /> &lt;source lang=&quot;c++&quot;&gt;<br /> #include &lt;Microduino_Matrix.h&gt;<br /> <br /> uint8_t Addr[MatrixPix_X][MatrixPix_Y] = { //1x1<br /> {64} //点阵IIC地址<br /> };<br /> <br /> Matrix display = Matrix(Addr, TYPE_COLOR); //TYPE_COLOR or TYPE_S2<br /> <br /> void setup() {<br /> Wire.begin();<br /> display.setBrightness(255);<br /> display.clearDisplay();<br /> }<br /> <br /> void loop() {<br /> //画空心圆，圆心x,y 半径r<br /> display.setColor(255, 0, 255);<br /> display.drawCircle(3, 3, 3); //x,y,r<br /> delay(2000);<br /> display.clearDisplay();<br /> display.setColor(0, 255, 255);<br /> display.drawCircle(3, 3, 2); //x,y,r<br /> delay(2000);<br /> display.clearDisplay();<br /> }<br /> &lt;/source&gt;<br /> &lt;br&gt;<br /> 单色点阵：[[Sensor-Dot Matrix-S2/zh]]<br /> &lt;source lang=&quot;c++&quot;&gt;<br /> #include &lt;Microduino_Matrix.h&gt;<br /> <br /> uint8_t Addr[MatrixPix_X][MatrixPix_Y] = { //1x1<br /> {64} //点阵IIC地址<br /> };<br /> <br /> Matrix display = Matrix(Addr, TYPE_S2); //TYPE_COLOR or TYPE_S2<br /> <br /> void setup() {<br /> Wire.begin();<br /> display.setBrightness(255);<br /> display.clearDisplay();<br /> }<br /> <br /> void loop() {<br /> //画空心圆，圆心x,y 半径r<br /> display.drawCircle(3, 3, 3); //x,y,r<br /> delay(2000);<br /> display.clearDisplay();<br /> display.drawCircle(3, 3, 2); //x,y,r<br /> delay(2000);<br /> display.clearDisplay();<br /> }<br /> &lt;/source&gt;<br /> &lt;br&gt;<br /> &lt;br&gt;<br /> &lt;p style=&quot;color: #E87E05;font-size:135%&quot;&gt;其他&lt;/p&gt;<br /> *[[Matrix.setBrightness()|setBrightness()]]<br /> *[[Matrix.setLed()|setLed()]]<br /> *[[Matrix.getHeight()|getHeight()]]<br /> *[[Matrix.getWidth()|getWidth()]]<br /> *[[Matrix.clearDisplay()|clearDisplay()]]<br /> *[[Matrix.setColor()|setColor()]]<br /> *[[Matrix.drawLine()|drawLine()]]<br /> *[[Matrix.drawRBox()|drawRBox()]]<br /> *[[Matrix.drawFrame()|drawFrame()]]<br /> *[[Matrix.drawRFrame()|drawRFrame()]]<br /> *[[Matrix.drawDisc()|drawDisc()]]<br /> *[[Matrix.print()|print()]]<br /> *[[Matrix.writeString()|writeString()]]<br /> *[[Matrix.drawBMP()|drawBMP()]]<br /> |}<br /> &lt;br&gt;<br /> &lt;br&gt;<br /> 【[[Dot_Matrix_Reference|返回Dot_Matrix_Reference界面]]】</div> Yanglibin@microduino.cc