for 2D, set cell_division_direction_function z=0

rheiland · rheiland · commit aa245886d080 · 2025-08-28T11:53:07.000-04:00
diff --git a/core/PhysiCell_cell.cpp b/core/PhysiCell_cell.cpp
@@ -613,7 +613,9 @@ Cell* Cell::divide( )
 	if( this->functions.cell_division_direction_function )
 	{ 
 		rand_vec = this->functions.cell_division_direction_function( this ); 
-        normalize( &rand_vec );
+        if( default_microenvironment_options.simulate_2D == true )  // ensure vec in XY plane
+	        { rand_vec[2] = 0.0; }
+        normalize( &rand_vec );  // ensure normalized
 	}
 	else
 	{

Original file line number	Diff line number	Diff line change
`@@ -613,7 +613,9 @@ Cell* Cell::divide( )`
`613`	`613`	`if( this->functions.cell_division_direction_function )`
`614`	`614`	`{`
`615`	`615`	`rand_vec = this->functions.cell_division_direction_function( this );`
`616`		`- normalize( &rand_vec );`
	`616`	`+ if( default_microenvironment_options.simulate_2D == true ) // ensure vec in XY plane`
	`617`	`+ { rand_vec[2] = 0.0; }`
	`618`	`+ normalize( &rand_vec ); // ensure normalized`
`617`	`619`	`}`
`618`	`620`	`else`
`619`	`621`	`{`