<function name="IsPointInCone" parent="util" type="libraryfunc"> <description>Returns whether a point is within a cone or not.</description> <realm>Shared</realm> <added>2023.08.08</added>⤶ <args> <arg name="point" type="Vector">The position of the point to test.</arg> <arg name="coneOrigin" type="Vector">The position of the cone tip.</arg> <arg name="coneAxis" type="Vector">The direction of the cone.</arg> <arg name="coneSine" type="number">The sine of the cone's angle.</arg> <arg name="coneLength" type="number">Length of the cone's axis.</arg> </args> <rets> <ret name="" type="boolean">`true` if the point is within the cone, `false` otherwise.</ret> </rets> </function> <example> <code> function ENT:Draw() local pos = self:GetPos() local point = Vector( 0, 0, 0 ) local sphereRad = 20 local height = 100 local angle = 45 --[[degrees]] / 180 * math.pi -- converted to radians local size = math.tan( angle ) * height local segs = 32 local is = util.IsPointInCone( point, pos, self:GetUp(), math.cos( angle ), height ) local is2 = util.IsSphereIntersectingCone( point, sphereRad, pos, self:GetUp(), math.sin( angle ), math.cos( angle ) ) -- infinite height local precalc = 1/segs * math.pi * 2 local center = pos for i = 1, segs do local pos1 = pos + math.sin( i * precalc ) * size * self:GetForward() + math.cos( i * precalc ) * size * self:GetRight() + self:GetUp() * height local pos2 = pos + math.sin( (i-1) * precalc ) * size * self:GetForward() + math.cos( (i-1) * precalc ) * size * self:GetRight() + self:GetUp() * height render.DrawLine( pos2, pos1, is and Color( 0, 255, 0 ) or Color( 255, 0, 0 ) ) render.DrawLine( pos2, center, is and Color( 0, 255, 0 ) or Color( 255, 0, 0 ) ) end render.DrawLine( pos, point, is and Color( 0, 255, 0 ) or Color( 255, 0, 0 ) ) debugoverlay.Sphere( point, sphereRad,0.01, is2 and Color( 0, 255, 0 ) or Color( 255, 0, 0 ) ) end </code> </example>