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- {"ast":null,"code":"export function create(x, y) {\n if (x == null) {\n x = 0;\n }\n if (y == null) {\n y = 0;\n }\n return [x, y];\n}\nexport function copy(out, v) {\n out[0] = v[0];\n out[1] = v[1];\n return out;\n}\nexport function clone(v) {\n return [v[0], v[1]];\n}\nexport function set(out, a, b) {\n out[0] = a;\n out[1] = b;\n return out;\n}\nexport function add(out, v1, v2) {\n out[0] = v1[0] + v2[0];\n out[1] = v1[1] + v2[1];\n return out;\n}\nexport function scaleAndAdd(out, v1, v2, a) {\n out[0] = v1[0] + v2[0] * a;\n out[1] = v1[1] + v2[1] * a;\n return out;\n}\nexport function sub(out, v1, v2) {\n out[0] = v1[0] - v2[0];\n out[1] = v1[1] - v2[1];\n return out;\n}\nexport function len(v) {\n return Math.sqrt(lenSquare(v));\n}\nexport var length = len;\nexport function lenSquare(v) {\n return v[0] * v[0] + v[1] * v[1];\n}\nexport var lengthSquare = lenSquare;\nexport function mul(out, v1, v2) {\n out[0] = v1[0] * v2[0];\n out[1] = v1[1] * v2[1];\n return out;\n}\nexport function div(out, v1, v2) {\n out[0] = v1[0] / v2[0];\n out[1] = v1[1] / v2[1];\n return out;\n}\nexport function dot(v1, v2) {\n return v1[0] * v2[0] + v1[1] * v2[1];\n}\nexport function scale(out, v, s) {\n out[0] = v[0] * s;\n out[1] = v[1] * s;\n return out;\n}\nexport function normalize(out, v) {\n var d = len(v);\n if (d === 0) {\n out[0] = 0;\n out[1] = 0;\n } else {\n out[0] = v[0] / d;\n out[1] = v[1] / d;\n }\n return out;\n}\nexport function distance(v1, v2) {\n return Math.sqrt((v1[0] - v2[0]) * (v1[0] - v2[0]) + (v1[1] - v2[1]) * (v1[1] - v2[1]));\n}\nexport var dist = distance;\nexport function distanceSquare(v1, v2) {\n return (v1[0] - v2[0]) * (v1[0] - v2[0]) + (v1[1] - v2[1]) * (v1[1] - v2[1]);\n}\nexport var distSquare = distanceSquare;\nexport function negate(out, v) {\n out[0] = -v[0];\n out[1] = -v[1];\n return out;\n}\nexport function lerp(out, v1, v2, t) {\n out[0] = v1[0] + t * (v2[0] - v1[0]);\n out[1] = v1[1] + t * (v2[1] - v1[1]);\n return out;\n}\nexport 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