76 lines
1.9 KiB
Haxe
76 lines
1.9 KiB
Haxe
package kha.math;
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@:structInit
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class FastVector2 {
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public inline function new(x: FastFloat = 0, y: FastFloat = 0): Void {
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this.x = x;
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this.y = y;
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}
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public static function fromVector2(v: Vector2): FastVector2 {
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return new FastVector2(v.x, v.y);
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}
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public var x: FastFloat;
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public var y: FastFloat;
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public var length(get, set): FastFloat;
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extern public inline function setFrom(v: FastVector2): Void {
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this.x = v.x;
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this.y = v.y;
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}
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inline function get_length(): FastFloat {
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return Math.sqrt(x * x + y * y);
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}
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inline function set_length(length: FastFloat): FastFloat {
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var currentLength = get_length();
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if (currentLength == 0)
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return 0;
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var mul = length / currentLength;
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x *= mul;
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y *= mul;
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return length;
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}
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extern public inline function add(vec: FastVector2): FastVector2 {
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return new FastVector2(x + vec.x, y + vec.y);
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}
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extern public inline function sub(vec: FastVector2): FastVector2 {
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return new FastVector2(x - vec.x, y - vec.y);
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}
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extern public inline function mult(value: FastFloat): FastVector2 {
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return new FastVector2(x * value, y * value);
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}
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extern public inline function div(value: FastFloat): FastVector2 {
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return mult(1 / value);
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}
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extern public inline function dot(v: FastVector2): FastFloat {
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return x * v.x + y * v.y;
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}
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@:deprecated("normalize() will be deprecated soon, use the immutable normalized() instead")
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extern public inline function normalize(): Void {
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#if haxe4 inline #end set_length(1);
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}
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extern public inline function normalized(): FastVector2 {
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var v = new FastVector2(x, y);
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#if haxe4 inline #end v.set_length(1);
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return v;
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}
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extern public inline function angle(v: FastVector2): FastFloat {
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return Math.atan2(x * v.y - y * v.x, x * v.x + y * v.y);
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}
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public function toString() {
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return 'FastVector2($x, $y)';
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}
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}
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