81 lines
1.7 KiB
Lua
81 lines
1.7 KiB
Lua
---@class AABB
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local Vector3 = require("Vector3")
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local AABB = {}
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AABB.__index = AABB
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function AABB.new(min, max)
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return setmetatable({
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min = min:copy(),
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max = max:copy()
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}, AABB)
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end
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function AABB:copy()
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return AABB.new(self.min, self.max)
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end
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function AABB:__tostring()
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return string.format("AABB(%s, %s)", tostring(self.min), tostring(self.max))
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end
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function AABB:expandTo(point)
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return AABB.new(
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Vector3.new(
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math.min(self.min.x, point.x),
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math.min(self.min.y, point.y),
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math.min(self.min.z, point.z)
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),
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Vector3.new(
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math.max(self.max.x, point.x),
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math.max(self.max.y, point.y),
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math.max(self.max.z, point.z)
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)
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)
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end
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function AABB:contains(point)
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return point.x >= self.min.x and point.x <= self.max.x and
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point.y >= self.min.y and point.y <= self.max.y and
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point.z >= self.min.z and point.z <= self.max.z
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end
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function AABB:intersects(other)
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return self.max.x >= other.min.x and self.min.x <= other.max.x and
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self.max.y >= other.min.y and self.min.y <= other.max.y and
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self.max.z >= other.min.z and self.min.z <= other.max.z
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end
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function AABB:union(other)
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return AABB.new(
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Vector3.new(
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math.min(self.min.x, other.min.x),
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math.min(self.min.y, other.min.y),
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math.min(self.min.z, other.min.z)
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),
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Vector3.new(
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math.max(self.max.x, other.max.x),
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math.max(self.max.y, other.max.y),
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math.max(self.max.z, other.max.z)
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)
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)
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end
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function AABB:center()
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return self.min:add(self.max):div(2)
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end
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function AABB:size()
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return self.max:sub(self.min)
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end
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function AABB:translated(v)
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return AABB.new(
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self.min:add(v),
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self.max:add(v)
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)
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end
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return AABB
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