99 lines
3.1 KiB
Lua
99 lines
3.1 KiB
Lua
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---
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-- @submodule Noble.Transition
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class("SpotlightMask", nil, Noble.Transition).extends(Noble.Transition)
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local transition = Noble.Transition.SpotlightMask
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transition.name = "Spotlight Mask"
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-- Type
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transition._type = Noble.Transition.Type.MIX
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--- A circle wipe transition.
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-- @see Noble.Transition.Spotlight.defaultProperties
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-- @table Noble.Transition.SpotlightMask.defaultProperties
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-- @tparam[opt=Ease.outQuad] Ease ease
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-- @number[opt=200] x
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-- @number[opt=120] y
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-- @number[opt=nil] xStart
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-- @number[opt=nil] yStart
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-- @number[opt=nil] xEnd
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-- @number[opt=nil] yEnd
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-- @bool[opt=false] invert
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transition.defaultProperties = {
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ease = Ease.outQuad,
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x = 200,
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y = 120,
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xStart = nil,
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yStart = nil,
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xEnd = nil,
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yEnd = nil,
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invert = false
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}
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function transition:setProperties(__arguments)
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self.x = __arguments.x or self.defaultProperties.x
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self.y = __arguments.y or self.defaultProperties.y
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self.xStart = __arguments.xStart or self.defaultProperties.xStart or self.x
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self.yStart = __arguments.yStart or self.defaultProperties.yStart or self.y
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self.xEnd = __arguments.xEnd or self.defaultProperties.xEnd or self.x
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self.yEnd = __arguments.yEnd or self.defaultProperties.yEnd or self.y
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self.invert = __arguments.invert or self.defaultProperties.invert
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if (self.invert) then
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self.ease = Ease.reverse(self.ease)
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end
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-- "Private" variables
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self._maskBackground = nil
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self._maskForegroundDrawMode = nil
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if (self.invert ~= true) then
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self._maskBackground = Graphics.image.new(400, 240, Graphics.kColorWhite)
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self._maskForegroundDrawMode = Graphics.kDrawModeFillBlack
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else
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self._maskBackground = Graphics.image.new(400, 240, Graphics.kColorBlack)
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self._maskForegroundDrawMode = Graphics.kDrawModeFillWhite
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end
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self._startRadius = math.max(
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Geometry.distanceToPoint(self.xStart, self.yStart, 0, 0),
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Geometry.distanceToPoint(self.xStart, self.yStart, 400, 0),
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Geometry.distanceToPoint(self.xStart, self.yStart, 400, 240),
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Geometry.distanceToPoint(self.xStart, self.yStart, 0, 240)
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)
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self._endRadius = math.max(
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Geometry.distanceToPoint(self.xEnd, self.yEnd, 0, 0),
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Geometry.distanceToPoint(self.xEnd, self.yEnd, 400, 0),
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Geometry.distanceToPoint(self.xEnd, self.yEnd, 400, 240),
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Geometry.distanceToPoint(self.xEnd, self.yEnd, 0, 240)
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)
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end
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function transition:draw()
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local progress = self.sequence:get()
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if (not self.invert) then
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self.oldSceneScreenshot:draw(0, 0)
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Graphics.setColor(Graphics.kColorClear)
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Graphics.fillCircleAtPoint(
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math.lerp(self.xStart, self.xEnd, progress),
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math.lerp(self.yStart, self.yEnd, progress),
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progress * self._endRadius
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)
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Graphics.setColor(Graphics.kColorBlack)
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else
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local mask = Graphics.image.new(400, 240, Graphics.kColorBlack)
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Graphics.pushContext(mask)
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Graphics.setColor(Graphics.kColorWhite)
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Graphics.fillCircleAtPoint(
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math.lerp(self.xStart, self.xEnd, progress),
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math.lerp(self.yStart, self.yEnd, progress),
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(1 - progress) * self._startRadius
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)
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Graphics.popContext()
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self.oldSceneScreenshot:setMaskImage(mask)
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self.oldSceneScreenshot:draw(0, 0)
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end
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end
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