Published
Edited
Jun 17, 2020
1 star
draw = function(pos) {
const svg = d3.select(DOM.svg(width, height))
svg.append("circle")
.attr("stroke", "gray")
.attr("fill", "orange")
.attr("cx", pos.x)
.attr("cy", pos.y)
.attr("r", 20)
return svg.node()
}
draw(pos)
pos = {
let x = 50;
let y = 30;
let dx = 3;
let dy = 3;
while (true) {
yield Promises.tick(1000/60, {'x': x, 'y': y});
x += dx;
y += dy;
if (x < 20 || x > width - 20) dx *= -1;
if (y < 20 || y > height - 20) dy *= -1;
}
}
canvitas = {
const ctx = DOM.context2d(width, height);
function roundedRect(ctx, x, y, width, height, radius) {
ctx.beginPath();
ctx.moveTo(x, y + radius);
ctx.lineTo(x, y + height - radius);
ctx.arcTo(x, y + height, x + radius, y + height, radius);
ctx.lineTo(x + width - radius, y + height);
ctx.arcTo(x + width, y + height, x + width, y + height-radius, radius);
ctx.lineTo(x + width, y + radius);
ctx.arcTo(x + width, y, x + width - radius, y, radius);
ctx.lineTo(x + radius, y);
ctx.arcTo(x, y, x, y + radius, radius);
ctx.stroke();
}
roundedRect(ctx, 12, 12, 150, 150, 15);
roundedRect(ctx, 19, 19, 150, 150, 9);
roundedRect(ctx, 53, 53, 49, 33, 10);
roundedRect(ctx, 53, 119, 49, 16, 6);
roundedRect(ctx, 135, 53, 49, 33, 10);
roundedRect(ctx, 135, 119, 25, 49, 10);
ctx.fillStyle = 'orange';
ctx.beginPath();
ctx.arc(37, 37, 13, Math.PI / 7, -Math.PI / 7, false);
ctx.lineTo(31, 37);
ctx.fill();
ctx.fillStyle = 'gray';
for (var i = 0; i < 8; i++) {
ctx.fillRect(51 + i * 16, 35, 4, 4);
}
for (i = 0; i < 6; i++) {
ctx.fillRect(115, 51 + i * 16, 4, 4);
}
for (i = 0; i < 8; i++) {
ctx.fillRect(51 + i * 16, 99, 4, 4);
}
ctx.fillStyle = 'red';
ctx.beginPath();
ctx.moveTo(83, 116);
ctx.lineTo(83, 102);
ctx.bezierCurveTo(83, 94, 89, 88, 97, 88);
ctx.bezierCurveTo(105, 88, 111, 94, 111, 102);
ctx.lineTo(111, 116);
ctx.lineTo(106.333, 111.333);
ctx.lineTo(101.666, 116);
ctx.lineTo(97, 111.333);
ctx.lineTo(92.333, 116);
ctx.lineTo(87.666, 111.333);
ctx.lineTo(83, 116);
ctx.fill();
ctx.fillStyle = 'white';
ctx.beginPath();
ctx.moveTo(91, 96);
ctx.bezierCurveTo(88, 96, 87, 99, 87, 101);
ctx.bezierCurveTo(87, 103, 88, 106, 91, 106);
ctx.bezierCurveTo(94, 106, 95, 103, 95, 101);
ctx.bezierCurveTo(95, 99, 94, 96, 91, 96);
ctx.moveTo(103, 96);
ctx.bezierCurveTo(100, 96, 99, 99, 99, 101);
ctx.bezierCurveTo(99, 103, 100, 106, 103, 106);
ctx.bezierCurveTo(106, 106, 107, 103, 107, 101);
ctx.bezierCurveTo(107, 99, 106, 96, 103, 96);
ctx.fill();
ctx.fillStyle = 'black';
ctx.beginPath();
ctx.arc(101, 102, 2, 0, Math.PI * 2, true);
ctx.fill();
ctx.beginPath();
ctx.arc(89, 102, 2, 0, Math.PI * 2, true);
ctx.fill();
return ctx.canvas;
}
height = 300
d3 = require("d3@5")
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