- random generating logic function

class/Tasks/TruthTableTask.php

@@ -55,6 +55,18 @@ class TruthTableTask extends PicturedTask
         return $this->lf;
     }
 
+    public function generateRandomFunction(array $input_vars, int $min_depth, int $max_depth): void {
+        $this->lf = LogicFunction::genRandom($input_vars, $min_depth, $max_depth);
+    }
+
+    public function generateRandomDF(array $input_vars): void {
+        $this->lf = LogicFunction::genRandomDF($input_vars);
+    }
+
+    public function setLogicFunctionExpr(string $expr, array $input_vars = []): void {
+        $this->lf = new LogicFunction($expr, $input_vars);
+    }
+
     public function getLogicFunctionExpr(string $fmt = "verilog_bitwise"): string {
         return $this->lf->getExpression($fmt);
     }
@@ -80,11 +92,11 @@ class TruthTableTask extends PicturedTask
 
     public function randomize(): void
     {
+        parent::randomize();
+
         if ($this->hasFlag("drawnetwork")) {
             $this->setImageData($this->lf->drawNetwork($this->output_variable));
             $this->setImageType("svg");
         }
-
-        parent::randomize();
     }
 }