lib: handle floating-point precision edge case for setting origin w/ loop

lib/src/converter/mod.rs

@@ -246,6 +246,8 @@ pub fn svg2program<'a, 'input: 'a>(
     options: ConversionOptions,
     machine: Machine<'input>,
 ) -> Vec<Token<'input>> {
+    let mut origin_transform = Transform2D::identity();
+    loop {
         let bounding_box = {
             let mut visitor = ConversionVisitor {
                 terrarium: Terrarium::new(PreprocessTurtle::default()),
@@ -254,14 +256,27 @@ pub fn svg2program<'a, 'input: 'a>(
                 name_stack: vec![],
             };
 
+            visitor.terrarium.push_transform(origin_transform);
             visitor.begin();
             visit::depth_first_visit(doc, &mut visitor);
             visitor.end();
+            visitor.terrarium.pop_transform();
 
             visitor.terrarium.turtle.bounding_box
         };
 
-    let origin_transform = {
+        if (!bounding_box.min.x.is_sign_negative() && !bounding_box.min.y.is_sign_negative())
+            || bounding_box
+                .min
+                .to_vector()
+                .abs()
+                .lower_than(vector(std::f64::EPSILON, std::f64::EPSILON))
+                .all()
+        {
+            break;
+        }
+
+        origin_transform = origin_transform.then(&{
             let mut transform = Transform2D::identity();
             if let Some(origin_x) = config.origin[0] {
                 transform = transform.then_translate(vector(origin_x - bounding_box.min.x, 0.));
@@ -270,7 +285,8 @@ pub fn svg2program<'a, 'input: 'a>(
                 transform = transform.then_translate(vector(0., origin_y - bounding_box.min.y));
             }
             transform
-    };
+        });
+    }
 
     let mut conversion_visitor = ConversionVisitor {
         terrarium: Terrarium::new(GCodeTurtle {