shithub: libvpx

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add flags for empty blocks

Change-Id: Iedf3bdd87d203db5163d3cc47fcbef1fd002218f

--- a/tools/3D-Reconstruction/sketch_3D_reconstruction/MotionField.pde

+++ b/tools/3D-Reconstruction/sketch_3D_reconstruction/MotionField.pde

@@ -61,6 +61,9 @@

       PVector mv = motion_field.get(i);

       if (mv.z > 0) {

         motion_field.set(i, new PVector(mv.x / mv.z, mv.y / mv.z, 0));

+      } else  // there is nothing in the block, use -1 to mark it.

+      {

+        motion_field.set(i, new PVector(0.0, 0.0, -1));

       }

     }

   }

@@ -85,7 +88,12 @@

       mvs[i] = "";

       for (int j = 0; j < c_num; j++) {

         PVector mv = motion_field.get(i * c_num + j);

-        mvs[i] += str(mv.x) + "," + str(mv.y);

+        if (mv.z != -1) {

+          mvs[i] += str(mv.x) + "," + str(mv.y);

+        } else  // there is nothing

+        {

+          mvs[i] += "-,-";

+        }

         if (j != c_num - 1) mvs[i] += ";";

       }

     }