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46 lines
857 B
Lua
46 lines
857 B
Lua
-- TimeVal
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local GestureRange = {
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ges = nil,
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-- spatial range limits the gesture emitting position
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range = nil,
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-- temproal range limits the gesture emitting rate
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rate = nil,
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-- span limits of this gesture
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scale = nil,
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}
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function GestureRange:new(o)
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local o = o or {}
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setmetatable(o, self)
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self.__index = self
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return o
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end
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function GestureRange:match(gs)
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if gs.ges ~= self.ges then
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return false
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end
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if self.range then
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if not self.range:contains(gs.pos) then
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return false
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end
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end
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if self.rate then
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local last_time = self.last_time or TimeVal:new{}
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if gs.time - last_time > TimeVal:new{usec = 1000000 / self.rate} then
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self.last_time = gs.time
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else
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return false
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end
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end
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if self.scale then
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if self.scale[1] > gs.span or self.scale[2] < gs.span then
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return false
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end
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end
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return true
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end
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return GestureRange
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