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Haxe
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2025-01-22 16:18:30 +01:00
package iron.math;
import kha.FastFloat;
class Vec2 {
public var x: FastFloat;
public var y: FastFloat;
public inline function new(x: FastFloat = 0.0, y: FastFloat = 0.0) {
this.x = x;
this.y = y;
}
public inline function cross(v: Vec2): FastFloat {
return x * v.y - y * v.x;
}
public inline function set(x: FastFloat, y: FastFloat): Vec2{
this.x = x;
this.y = y;
return this;
}
public inline function add(v: Vec2): Vec2 {
x += v.x;
y += v.y;
return this;
}
public inline function addf(x: FastFloat, y: FastFloat): Vec2 {
this.x += x;
this.y += y;
return this;
}
public inline function addvecs(a: Vec2, b: Vec2): Vec2 {
x = a.x + b.x;
y = a.y + b.y;
return this;
}
public inline function subvecs(a: Vec2, b: Vec2): Vec2 {
x = a.x - b.x;
y = a.y - b.y;
return this;
}
public inline function normalize(): Vec2 {
var a = this.x;
var b = this.y;
var l = a * a + b * b;
if (l > 0.0) {
l = 1.0 / Math.sqrt(l);
this.x = a * l;
this.y = b * l;
}
return this;
}
public inline function mult(f: FastFloat): Vec2 {
x *= f;
y *= f;
return this;
}
public inline function dot(v: Vec2): FastFloat {
return x * v.x + y * v.y;
}
public inline function setFrom(v: Vec2): Vec2 {
x = v.x;
y = v.y;
return this;
}
public inline function clone(): Vec2 {
return new Vec2(x, y);
}
public inline function lerp(from: Vec2, to: Vec2, s: FastFloat): Vec2 {
x = from.x + (to.x - from.x) * s;
y = from.y + (to.y - from.y) * s;
return this;
}
public inline function equals(v: Vec2): Bool {
return x == v.x && y == v.y;
}
public inline function length(): FastFloat {
return Math.sqrt(x * x + y * y);
}
public inline function sub(v: Vec2): Vec2 {
x -= v.x;
y -= v.y;
return this;
}
public inline function exp(v: Vec2): Vec2 {
x = Math.exp(v.x);
y = Math.exp(v.y);
return this;
}
public static inline function distance(v1: Vec2, v2: Vec2): FastFloat {
return distancef(v1.x, v1.y, v2.x, v2.y);
}
public static inline function distancef(v1x: FastFloat, v1y: FastFloat, v2x: FastFloat, v2y: FastFloat): FastFloat {
var vx = v1x - v2x;
var vy = v1y - v2y;
return Math.sqrt(vx * vx + vy * vy);
}
public inline function distanceTo(p: Vec2): FastFloat {
return Math.sqrt((p.x - x) * (p.x - x) + (p.y - y) * (p.y - y));
}
public inline function clamp(min: FastFloat, max: FastFloat): Vec2 {
var l = length();
if (l < min) normalize().mult(min);
else if (l > max) normalize().mult(max);
return this;
}
public static inline function xAxis(): Vec2 {
return new Vec2(1.0, 0.0);
}
public static inline function yAxis(): Vec2 {
return new Vec2(0.0, 1.0);
}
public function toString(): String {
return "(" + this.x + ", " + this.y + ")";
}
}