stairsplus.api.register_shape("slab_1", {
	name_format = "slab_%s_1",
	description = "@1 1/16 Slab",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 1, -- 1/16 nodes, complement of slab_15 to make node
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, -0.4375, 0.5 },
	},
})

stairsplus.api.register_shape("slab_2", {
	name_format = "slab_%s_2",
	description = "@1 1/8 Slab",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 1, -- 1/8 nodes, complement of slab_14 to make node
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, -0.375, 0.5 },
	},
})

stairsplus.api.register_shape("slab_4", {
	name_format = "slab_%s_4",
	aliases = { "slab_%s_quarter" },
	description = "@1 1/4 Slab",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 2, -- 1/4 nodes, complement of slab_12 to make node
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, -0.25, 0.5 },
	},
})

stairsplus.api.register_shape("slab_8", {
	name_format = "slab_%s_8",
	aliases = { "slab_%s" },
	description = "@1 1/2 Slab",
	shape_groups = { slab = 1, legacy = 1, stairs_legacy = 1 },
	eighths = 4, -- 1/2 nodes
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, 0, 0.5 },
	},
})

stairsplus.api.register_shape("slab_12", {
	name_format = "slab_%s_12",
	aliases = { "slab_%s_three_quarter" },
	description = "@1 3/4 Slab",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 6, -- 3/4 nodes, complement of slab_4 to make node
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, 0.25, 0.5 },
	},
})

stairsplus.api.register_shape("slab_14", {
	name_format = "slab_%s_14",
	description = "@1 7/8 Slab",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 7, -- 7/8 nodes, complement of slab_2 to make node
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, 0.375, 0.5 },
	},
})

stairsplus.api.register_shape("slab_15", {
	name_format = "slab_%s_15",
	description = "@1 15/16 Slab",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 7, -- 15/16 nodes, complement of slab_1 to make node
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = { -0.5, -0.5, -0.5, 0.5, 0.4375, 0.5 },
	},
})

--- these terrible things

stairsplus.api.register_shape("slab_two_sides", {
	name_format = "slab_%s_two_sides",
	description = "@1 1/16 Slab Two Sides",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 1, -- 31/256 nodes
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ -0.5, -0.5, -0.5, 0.5, -7 / 16, 7 / 16 },
			{ -0.5, -0.5, 7 / 16, 0.5, 0.5, 0.5 },
		},
	},
})

stairsplus.api.register_shape("slab_three_sides", {
	name_format = "slab_%s_three_sides",
	description = "@1 1/16 Slab Three Sides",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 1, -- 361/2048 nodes
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ -7 / 16, -0.5, -0.5, 0.5, -7 / 16, 7 / 16 },
			{ -7 / 16, -0.5, 7 / 16, 0.5, 0.5, 0.5 },
			{ -0.5, -0.5, -0.5, -7 / 16, 0.5, 0.5 },
		},
	},
})

stairsplus.api.register_shape("slab_three_sides_u", {
	name_format = "slab_%s_three_sides_u",
	description = "@1 1/16 Slab Three Sides U",
	shape_groups = { slab = 1, legacy = 1 },
	eighths = 1, -- 23/128 nodes
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{ -0.5, -0.5, -0.5, 0.5, 0.5, -7 / 16 },
			{ -0.5, -0.5, -7 / 16, 0.5, -7 / 16, 7 / 16 },
			{ -0.5, -0.5, 7 / 16, 0.5, 0.5, 0.5 },
		},
	},
})