Fixture:rayCast

Available since LÖVE 0.8.0
This method is not supported in earlier versions.

Casts a ray against the shape of the fixture.

O.png There is a bug in 0.8.0 where the normal vector returned by this function gets scaled by love.physics.getMeter.  


Function

Synopsis

xn, yn, fraction = Fixture:rayCast( x1, y1, x2, y2, maxFraction, childIndex )

Arguments

number x1
The x position of the ray starting point.
number y1
The y position of the ray starting point.
number x2
The x position of the ray end point.
number y2
The y position of the ray end point.
number maxFraction
The maximum distance the ray is going to travel as a factor of the input vector length.
number childIndex (1)
The index of the child the ray gets cast against.

Returns

number xn
The x component of the normal vector of the edge where the ray hit the shape.
number yn
The y component of the normal vector of the edge where the ray hit the shape.
number fraction
The position on the input vector where the intersection happened as a factor of the input vector length.

See Also


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