Intersection n Items with n Items

[jimsalabim]

How to check for intersections for multiple curves with multiple objects?

In the end, there should be only one list with items that are not inside any of the Breps.

This is how it works with only one Brep.

Thanks for your help,
Jakob

[ftzuk]

Upoad.Your.Code

[jimsalabim]

Intersection.gh (41.7 KB)

[Erik_Beeren1 (Erik Beeren)]

Hi @jimsalabim

you can use OR logic (with the help of mass addition):
0+0=0
0+1=1
1+1=1
Even with more BREPs this will work.

Intersection.gh (43.9 KB)

[jimsalabim]

How can 1+1 be 1?

[Joseph_Oster]

Boolean: True AND True = True

[jimsalabim]

Then mass addition must be the wrong Component.

[Joseph_Oster]

Mass Addition (logical OR) is True when the result is not zero. (assuming none of the items is negative, which is the case when they are Booleans)
Mass Multiplication (logical AND) is False when any of the items is zero (False).

[Erik_Beeren1 (Erik Beeren)]

Hi @jimsalabim
In boolean algebra there are just two numbers. 0 and 1
So every number which is not zero will be called one.

Maths in a minute: Boolean algebra

[jimsalabim]

ok, it works when adding another boolean Component.

[Erik_Beeren1 (Erik Beeren)]

@jimsalabim also without it wil work.
all boolean inputs in grasshopper understand that a zero is False and other numbers are True