A sorcerer wants to summon a creature outside while staying safely indoors and looking out the window. Will this work?
They are hiding from multiple swarms of wasps, in case any one wanted to know.
Under the rules for casting a spell:
"A line of effect is a straight, unblocked path that indicates what a spell can affect."
"You must have a clear line of effect to any target that you cast a spell on or to any space in which you wish to create an effect."
Since you would need to target the space for the summon spell to take effect in, I would say the answer is No it will not work.
A sorcerer wants to summon a creature outside while staying safely indoors and looking out the window. Will this work?
They are hiding from multiple swarms of wasps, in case any one wanted to know.
It depends on the circumstances
Line of Effect: A line of effect is a straight, unblocked path that indicates what a spell can affect. A line of effect is canceled by a solid barrier. It's like line of sight for ranged weapons, except that it's not blocked by fog, darkness, and other factors that limit normal sight.
You must have a clear line of effect to any target that you cast a spell on or to any space in which you wish to create an effect. You must have a clear line of effect to the point of origin of any spell you cast.
A burst, cone, cylinder, or emanation spell affects only an area, creature, or object to which it has line of effect from its origin (a spherical burst's center point, a cone-shaped burst's starting point, a cylinder's circle, or an emanation's point of origin).
An otherwise solid barrier with a hole of at least 1 square foot through it does not block a spell's line of effect. Such an opening means that the 5-foot length of wall containing the hole is no longer considered a barrier for purposes of a spell's line of effect.
A large enough window would allow you to cast through the wall.
