Ionization boundary condition fully tested.

Documentation updated properly.

3D Cartesian geometry also tested.
Documentation updated properly.

Added weighting probability in the injection of particles.

src/modules/moduleInject.f90

@@ -54,6 +54,8 @@ MODULE moduleInject
     INTEGER:: sp !Species of injection
     INTEGER:: nEdges
     INTEGER, ALLOCATABLE:: edges(:) !Array with edges
+    REAL(8), ALLOCATABLE:: cumWeight(:) !Array of cummulative probability
+    REAL(8):: sumWeight
     TYPE(velDistCont):: v(1:3) !Velocity distribution function in each direction
     CONTAINS
       PROCEDURE, PASS:: init         => initInject
@@ -121,12 +123,21 @@ MODULE moduleInject
       DO e=1, mesh%numEdges
         IF (mesh%edges(e)%obj%physicalSurface == physicalSurface) THEN
           et = et + 1
-          self%edges(et)  = mesh%edges(e)%obj%n
+          self%edges(et) = mesh%edges(e)%obj%n
 
         END IF
 
       END DO
 
+      !Calculates cumulative probability
+      ALLOCATE(self%cumWeight(1:self%nEdges))
+      self%cumWeight(1) = mesh%edges(self%edges(et))%obj%weight
+      DO et = 2, self%nEdges
+        self%cumWeight(et) = mesh%edges(self%edges(et))%obj%weight + self%cumWeight(et-1)
+
+      END DO
+      self%sumWeight = self%cumWeight(self%nEdges)
+
       nPartInj = nPartInj + self%nParticles
 
     END SUBROUTINE initInject
@@ -229,7 +240,7 @@ MODULE moduleInject
 
       !$OMP DO
       DO n = nMin, nMax
-        randomX = random(1, self%nEdges)
+        randomX = randomWeighted(self%cumWeight, self%sumWeight)
 
         randomEdge => mesh%edges(self%edges(randomX))%obj
         !Random position in edge