actually, more seeds, more print out seeds

src/libs/ascent/runtimes/flow_filters/ascent_runtime_vtkh_filters.cpp

@@ -3887,6 +3887,7 @@ VTKHParticleAdvection::execute()
       float x = seedBBox[0] + dx * distribution(generator);
       float y = seedBBox[2] + dy * distribution(generator);
       float z = seedBBox[4] + dz * distribution(generator);
+      std::cerr << "seed " << i << ": " << x << " " << y << " " << z << std::endl;
       seeds.push_back(vtkm::Particle({x,y,z}, i));
     }
     auto seedArray = vtkm::cont::make_ArrayHandle(seeds, vtkm::CopyFlag::On);

src/tests/ascent/t_ascent_particle_advection.cpp

@@ -95,7 +95,7 @@ void testFilter(bool isStreamline)
     // filter knobs
     conduit::Node &sl_params = pipelines["pl1/f1/params"];
     sl_params["field"] = "vel";
-    sl_params["num_seeds"] = 1;
+    sl_params["num_seeds"] = 30;
     sl_params["num_steps"] = 100;
     sl_params["step_size"] = 0.01;
     sl_params["seed_bounding_box_xmin"] = 0.0;
@@ -135,13 +135,13 @@ void testFilter(bool isStreamline)
       scenes["s1/plots/p1/field"] = "lines";
       scenes["s1/plots/p1/pipeline"] = "pl1";
       scenes["s1/image_prefix"] = output_image;
-      scenes["s1/renders/r1/image_name"] = output_image + "_azimuth0";
+      scenes["s1/renders/r1/image_name"] = output_image + "_azimuth0_30seed";
       scenes["s1/renders/r1/camera/azimuth"] = 0;
-      scenes["s1/renders/r2/image_name"] = output_image + "_azimuth90";
+      scenes["s1/renders/r2/image_name"] = output_image + "_azimuth90_30seed";
       scenes["s1/renders/r2/camera/azimuth"] = 90;
-      scenes["s1/renders/r3/image_name"] = output_image + "_azimuth180";
+      scenes["s1/renders/r3/image_name"] = output_image + "_azimuth180_30seed";
       scenes["s1/renders/r3/camera/azimuth"] = 180;
-      scenes["s1/renders/r4/image_name"] = output_image + "_azimuth270";
+      scenes["s1/renders/r4/image_name"] = output_image + "_azimuth270_30seed";
       scenes["s1/renders/r4/camera/azimuth"] = 270;
 
       // remove old image before rendering