p5.js 触摸 |触摸移动()
p5.js 中的touchMoved()函数在触摸移动被注册时被调用。如果未定义 touchMoved()函数,则将调用mouseDragged()函数(如果已定义)。
句法:
touchMoved([Event])
下面的程序说明了 p5.js 中的 touchMoved()函数:
示例 1:
let valueX;
let valueY;
function setup() {
// Create Canvas of size 500*500
createCanvas(500, 500);
}
function draw() {
// set background color
background(200);
fill('green');
// set text and text size
textSize(25);
text('Hold and Move to change color', 30, 30);
// fill color according to touchStarted()
fill(valueX, 255 - valueY, 255 - valueX);
// draw ellipse
ellipse(mouseX, mouseY, 115, 115);
}
function touchMoved() {
valueX = mouseX % 255;
valueY = mouseY % 255;
}
输出:
示例 2:
let valueX;
let valueY;
function setup() {
// Create Canvas of size 500*500
createCanvas(500, 500);
}
function draw() {
// set background color
background(200);
fill('green');
// set text and text size
textSize(25);
text('Touch and Move to change color', 30, 30);
// fill color according to mouseMoved()
fill(valueX, 255 - valueY, 255 - valueX);
// draw rectangle
rect(mouseX, mouseY, 115, 115);
fill(valueY, 255 - valueX, 255 - valueX);
rect(mouseX, mouseY + 115, 115, 115);
fill(255 - valueY, 255 - valueX, 255 - valueY);
rect(mouseX - 115, mouseY, 115, 115);
fill(255 - valueY, 255 - valueY, 255 - valueY);
rect(mouseX - 115, mouseY + 115, 115, 115);
}
function touchMoved() {
valueX = mouseX % 255;
valueY = mouseY % 255;
}
输出:
参考: https://p5js.org/reference/#/p5/touchMoved