76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
//Create the renderer
|
|
var renderer = PIXI.autoDetectRenderer(256, 256);
|
|
|
|
//Add the canvas to the HTML document
|
|
document.body.appendChild(renderer.view);
|
|
|
|
//Create a container object called the `stage`
|
|
var stage = new PIXI.Container();
|
|
|
|
renderer.view.style.position = "absolute";
|
|
renderer.view.style.display = "block";
|
|
renderer.autoResize = true;
|
|
renderer.resize(window.innerWidth, window.innerHeight);
|
|
|
|
var counter = 0,
|
|
triPoints = [
|
|
[0, 0],
|
|
[-50, 50],
|
|
[50, 50]
|
|
],
|
|
triangle = new PIXI.Graphics();
|
|
|
|
function randomInt(min, max) {
|
|
return Math.floor(Math.random() * (max - min + 1)) + min;
|
|
}
|
|
|
|
function drawLine(x1, y1, x2, y2) {
|
|
var line = new PIXI.Graphics();
|
|
line.lineStyle(1, 0xFFFFFF, 1);
|
|
line.moveTo(x1, y1);
|
|
line.lineTo(x2, y2);
|
|
line.x = x1;
|
|
line.y = y1;
|
|
stage.addChild(line);
|
|
}
|
|
|
|
function drawShiftingTriangle(triangle, arrayOfPoints) {
|
|
// Given arrayOfPoints, randomly shifts them by some amount, draws it, and returns new arrayOfPoints
|
|
var newPoints = [];
|
|
for (var i = 0; i < arrayOfPoints.length; i++) {
|
|
newPoints[i] = [arrayOfPoints[i][0] + randomInt(-10, 10),
|
|
arrayOfPoints[i][1] + randomInt(-10, 10)];
|
|
}
|
|
triangle.lineStyle(4, 0xFF3300, 1);
|
|
triangle.beginFill(0x66FF33);
|
|
triangle.moveTo(newPoints[0][0], newPoints[0][1]);
|
|
triangle.lineTo(newPoints[1][0], newPoints[1][1]);
|
|
triangle.lineTo(newPoints[2][0], newPoints[2][1]);
|
|
triangle.lineTo(newPoints[0][0], newPoints[0][1]);
|
|
triangle.endFill();
|
|
stage.addChild(triangle);
|
|
|
|
return newPoints;
|
|
}
|
|
|
|
function loop(){
|
|
requestAnimationFrame(loop);
|
|
|
|
counter += 1;
|
|
counter = counter % 60;
|
|
|
|
triangle.clear();
|
|
|
|
// drawLine(0, 0, counter, counter);
|
|
triPoints = drawShiftingTriangle(triangle, triPoints);
|
|
|
|
var mousePosition = renderer.plugins.interaction.mouse.global;
|
|
triangle.x = mousePosition.x;
|
|
triangle.y = mousePosition.y;
|
|
|
|
//Tell the `renderer` to `render` the `stage`
|
|
renderer.render(stage);
|
|
}
|
|
|
|
loop();
|