点亮led灯
点亮LED灯
目的本教程将教大家如何用Processing来点亮LED灯。 设备
原理图
程序见 LEDButtonByOver LEDButtonByClick 注意：代码里包含图片请不要丢掉 调试步骤一：按着原理图搭建硬件环境，像这样：
步骤二：解释一下代码： // Declaring two variable of type PImage, a class available to us from the Processing core library. PImage LEDON, LEDOFF; //load two img
LEDON = loadImage("LEDON.png");
LEDOFF = loadImage("LEDOFF.png");
Mouse over: // When the mouse is moved, the state of the button is toggled.
void mouseMoved() {
if (mouseX > x && mouseX < x+w && mouseY > y && mouseY < y+h) {
button = true;
}
else {
button = false;
}
}
Mouse Click: // When the mouse is pressed, the state of the button is toggled.
void mousePressed() {
if (mouseX > x && mouseX < x+w && mouseY > y && mouseY < y+h) {
button = !button;
}
}
步骤三：下载代码并编译通过。
结果鼠标滑过灯泡上方，灯泡会亮起，离开会熄灭，Processing的动画效果是这样的： 鼠标滑过或点击灯泡： 鼠标离开或点击灯泡： 视频 |
