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Orbit Demo: add delta animation + velocity

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Tangent Wantwight 2024-01-23 23:54:51 -05:00
parent 82f5a75ecd
commit 9a261f6f3c
1 changed files with 15 additions and 6 deletions
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21
debug/tick.ts
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@ -43,10 +43,18 @@ export function OrbitDemo() {
cx.scale(1 / 2, 1 / 2);
cx.translate(512, 512);
const masses: { x: number; y: number; r: number; m: number; c: string }[] = [
{ x: 0, y: 0, r: 10, m: 10000, c: "yellow" },
{ x: -200, y: 200, r: 4, m: 4, c: "red" },
{ x: -450, y: 0, r: 5, m: 5, c: "blue" },
const masses: {
x: number;
y: number;
vx: number;
vy: number;
r: number;
m: number;
c: string;
}[] = [
{ x: 0, y: 0, vx: 0, vy: 0, r: 10, m: 10000, c: "yellow" },
{ x: -200, y: 200, vx: 100, vy: 100, r: 4, m: 4, c: "red" },
{ x: -450, y: 0, vx: 0, vy: 100, r: 5, m: 5, c: "blue" },
];
const tickSource = tick(16);
@ -61,12 +69,13 @@ export function OrbitDemo() {
case "physics":
break;
case "render":
const [, dt] = tick;
cx.fillStyle = "black";
cx.fillRect(-512, -512, 1024, 1024);
masses.forEach(({ x, y, r, c }) => {
masses.forEach(({ x, y, vx, vy, r, c }) => {
cx.fillStyle = c;
cx.beginPath();
cx.arc(x, y, r, 0, Math.PI * 2);
cx.arc(x + vx * dt, y + vy * dt, r, 0, Math.PI * 2);
cx.fill();
});
break;