BezierCurve:evaluate

Available since LÖVE 0.9.0
This function is not supported in earlier versions.

Evaluate Bézier curve at parameter t. The parameter must be between 0 and 1 (inclusive).

This function can be used to move objects along paths or tween parameters. However it should not be used to render the curve, see BezierCurve:render for that purpose.

Function

Synopsis

x,y = BezierCurve:evaluate(t)

Arguments

number t
Where to evaluate the curve.

Returns

number x
x coordinate of the curve at parameter t.
number y
y coordinate of the curve at parameter t.

Examples

Make a circle follow a curve

local curve = love.math.newBezierCurve({125,125, 125,225, 175,125, 225,125})

function love.draw()
	local time     = love.timer.getTime()
	local loopTime = 4
	local t        = (time / loopTime) % 1
	local x, y     = curve:evaluate(t)

	love.graphics.circle("fill", x, y, 8)
	love.graphics.line(curve:render())
end

See Also


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