@tolokoban/tgd
Version:
ToloGameDev library for WebGL2
124 lines • 9.14 kB
JavaScript
import { tgdCalcMix } from "../utils/math.js";
export class TgdVec2 extends Float32Array {
static fromMix(v1, v2, a = 0.5) {
const b = 1 - a;
const x = b * v1.x + a * v2.x;
const y = b * v1.y + a * v2.y;
return new TgdVec2(x, y);
}
static distance(from, to) {
const x = to.x - from.x;
const y = to.y - from.y;
return Math.hypot(x, y);
}
constructor(x = 0, y = 0) {
super(2);
if (typeof x !== "number") {
this.x = x[0];
this.y = x[1];
return;
}
this.x = x;
this.y = y;
}
clone() {
return new TgdVec2(this);
}
mix(vec, alpha = 0.5) {
this.x = (1 - alpha) * this.x + alpha * vec.x;
this.y = (1 - alpha) * this.y + alpha * vec.y;
return this;
}
isEqual(vec) {
const [x, y] = vec;
if (x !== this.x)
return false;
if (y !== this.y)
return false;
return true;
}
isClose(vec, epsilon = 1e-6) {
const [x, y] = vec;
if (Math.abs(x - this.x) > epsilon)
return false;
if (Math.abs(y - this.y) > epsilon)
return false;
return true;
}
from(vec) {
const [x, y] = vec;
this.x = x;
this.y = y;
return this;
}
fromMix(a, b, t) {
const [ax, ay] = a;
const [bx, by] = b;
return this.reset(tgdCalcMix(ax, bx, t), tgdCalcMix(ay, by, t));
}
reset(x, y) {
this[0] = x;
this[1] = y;
return this;
}
get x() {
return this[0];
}
set x(value) {
this[0] = value;
}
get y() {
return this[1];
}
set y(value) {
this[1] = value;
}
add(...vectors) {
for (const vec of vectors) {
this[0] += vec.x;
this[1] += vec.y;
}
return this;
}
addWithScale(vec, scale) {
this[0] += vec.x * scale;
this[1] += vec.y * scale;
return this;
}
subtract(vec) {
this[0] -= vec[0];
this[1] -= vec[1];
return this;
}
scale(factor) {
this[0] *= factor;
this[1] *= factor;
return this;
}
dot(vec) {
return this[0] * vec[0] + this[1] * vec[1];
}
get size() {
return Math.hypot(this[0], this[1]);
}
normalize() {
const squareLength = this[0] * this[0] + this[1] * this[1];
if (squareLength === 0)
return this;
return this.scale(1 / Math.sqrt(squareLength));
}
/**
* Set random values between -0.5 and +0.5 to each coordinate.
*/
random() {
this[0] = Math.random() - 0.5;
this[1] = Math.random() - 0.5;
return this;
}
debug(caption = "vec2") {
const { x, y } = this;
const out = [x, y].map(n => n.toFixed(6));
console.log(`${caption}: `, out.join(" | "), " length:", Math.hypot(x, y));
}
}
//# sourceMappingURL=data:application/json;base64,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