com.almasb.fxgl.physics.box2d.callbacks

Interface RayCastCallback

public interface RayCastCallback

Callback class for ray casts. See World.raycast(RayCastCallback, Vec2, Vec2)

Author:

Daniel Murphy

Method Summary

Modifier and Type	Method and Description
float	reportFixture(Fixture fixture, Vec2 point, Vec2 normal, float fraction) Called for each fixture found in the query.

Method Detail

reportFixture

float reportFixture(Fixture fixture,
                    Vec2 point,
                    Vec2 normal,
                    float fraction)

Called for each fixture found in the query. You control how the ray cast proceeds by returning a float:

• return -1: ignore this fixture and continue
• return 0: terminate the ray cast
• return fraction: clip the ray to this point
• return 1: don't clip the ray and continue

Parameters:

fixture - the fixture hit by the ray

point - the point of initial intersection

normal - the normal vector at the point of intersection

fraction - fraction

Returns:

-1 to filter, 0 to terminate, fraction to clip the ray for closest hit, 1 to continue