DifferenceΒΆ

Learning targets

  • Use Boolean operation to form the difference of two objects

This example forms the difference of two circles by means of the Boolean difference operator.

_images/ex2d_difference_mesh.png

.jcm Input File

  • layout.jcm [ASCII]

     1Layout2D {  
 2  UnitOfLength = 1  
 3  Objects {
 4    
 5    Parallelogram {
 6      Priority = ComputationalDomain
 7      DomainId = 1
 8      BoundingBox {
 9        Offset = [1 1 1 1]
10      }
11    }
12    
13    BooleanOperation {
14      DomainId = 2 
15      Operator = Difference
16      A { 
17        Circle {
18          Radius = 6
19          GlobalPosition = [-4.0 0.0]
20          RefineAll = 2
21        }
22      }
23      
24      B {
25        Circle {
26          Radius = 4
27          GlobalPosition = [1.75 0.0]
28          RefineAll = 2
29        }
30      }
31    }
32  }  
33  
34}