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https://github.com/bertptrs/adventofcode.git
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53 lines
1.9 KiB
HCL
53 lines
1.9 KiB
HCL
variable "first" {
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type = tuple([number, number])
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}
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variable "second" {
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type = tuple([number, number])
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}
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variable "width" {
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type = number
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}
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variable "height" {
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type = number
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}
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locals {
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dx = var.second[0] - var.first[0]
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dy = var.second[1] - var.first[1]
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# sort() doesn't work as it turns the numbers into strings
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gcd0 = abs(local.dx) < abs(local.dy) ? [abs(local.dx), abs(local.dy)] : [abs(local.dy), abs(local.dx)]
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# Do as many iterations as necessary.
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gcd1 = local.gcd0[0] == 0 ? local.gcd0 : [local.gcd0[1] % local.gcd0[0], local.gcd0[0]]
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gcd2 = local.gcd1[0] == 0 ? local.gcd1 : [local.gcd1[1] % local.gcd1[0], local.gcd1[0]]
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gcd3 = local.gcd2[0] == 0 ? local.gcd2 : [local.gcd2[1] % local.gcd2[0], local.gcd2[0]]
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gcd4 = local.gcd3[0] == 0 ? local.gcd3 : [local.gcd3[1] % local.gcd3[0], local.gcd3[0]]
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gcd5 = local.gcd4[0] == 0 ? local.gcd4 : [local.gcd4[1] % local.gcd4[0], local.gcd4[0]]
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gcd6 = local.gcd5[0] == 0 ? local.gcd5 : [local.gcd5[1] % local.gcd5[0], local.gcd5[0]]
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gcd7 = local.gcd6[0] == 0 ? local.gcd6 : [local.gcd6[1] % local.gcd6[0], local.gcd6[0]]
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gcd8 = local.gcd7[0] == 0 ? local.gcd7 : [local.gcd7[1] % local.gcd7[0], local.gcd7[0]]
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gcd9 = local.gcd8[0] == 0 ? local.gcd8 : [local.gcd8[1] % local.gcd8[0], local.gcd8[0]]
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gcd10 = local.gcd9[0] == 0 ? local.gcd9 : [local.gcd9[1] % local.gcd9[0], local.gcd9[0]]
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# 10 iterations should cover numbers up to 55, which is more than the width/height
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gcd = local.gcd10[1]
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}
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output "nodes1" {
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value = [
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[var.first[0] - local.dx, var.first[1] - local.dy],
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[var.second[0] + local.dx, var.second[1] + local.dy],
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]
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}
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output "nodes2" {
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value = concat(
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[for i in range(max(var.width, var.height)) : [var.first[0] - i * local.dx / local.gcd, var.first[1] - i * local.dy / local.gcd]],
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[for i in range(max(var.width, var.height)) : [var.second[0] + i * local.dx / local.gcd, var.second[1] + i * local.dy / local.gcd]]
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)
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}
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