diff --git a/zoneb/bin/data/shaders/particles/draw.frag b/zoneb/bin/data/shaders/particles/draw.frag
index 9caabf1..3cc5e3a 100755
--- a/zoneb/bin/data/shaders/particles/draw.frag
+++ b/zoneb/bin/data/shaders/particles/draw.frag
@@ -14,6 +14,7 @@ uniform vec3 uHottest0;
 uniform vec3 uHottest1;
 uniform vec3 uHottest3d0;
 uniform vec3 uHottest3d1;
+uniform vec3 uBetween;
 
 in vec2 texCoordVarying;
 in vec3 vPos;
@@ -102,8 +103,8 @@ void main()
   vec3 remapedColorW = texture(warm1, palette).xyz;
   vec3 remapedColorC = texture(cold2, palette).xyz;
   float d = 50;
-  float D = 400;
-  float rate = smoothstep(D - d, D + d, length(vPos.x - uHottest3d1.x) + simplex3d(vPos * vec3(0.001, 0.001, 0.1)) * 100);
+  float D = 600;
+  float rate = smoothstep(D - d, D + d, length(vPos.x + uBetween.x) + simplex3d(vPos * vec3(0.001, 0.001, 0.1)) * 100);
   vec3 remapedColor = mix(remapedColorW, remapedColorC, rate);
   float alpha = max(0, 1 - pow(vAge,4));
   
diff --git a/zoneb/src/ofApp.cpp b/zoneb/src/ofApp.cpp
index 732befa..68d49ad 100644
--- a/zoneb/src/ofApp.cpp
+++ b/zoneb/src/ofApp.cpp
@@ -132,7 +132,7 @@ void ofApp::setupGui()
   debugGui.setup("DEBUG");
   debugGui.add(calibMode.setup("calib", false));
   debugGui.add(dummyMode.setup("dummy", true));                      // should be false
-  debugGui.add(dummyXY.setup("XY", {256, 256}, {0, 0}, {511, 511})); // should be false
+  debugGui.add(dummyXY.setup("XY", {0, 0}, {-500, -1000}, {500, 500})); // should be false
   debugGui.add(debugFps.setup("FPS", "0"));
   debugGui.setPosition(230, 10);
 }
@@ -228,20 +228,13 @@ void ofApp::updateThermal()
     {
       hotspot0 = hotspots.at(0).at(0);
     }
-    if (dummyMode == false)
+    if (hotspots.size() > 1 && hotspots.at(1).size() > 0)
     {
-      if (hotspots.size() > 1 && hotspots.at(1).size() > 0)
-      {
-        hotspot1 = hotspots.at(1).at(0);
-      }
-      else if (hotspots.size() > 0 && hotspots.at(0).size() > 1)
-      {
-        hotspot1 = hotspots.at(0).at(1);
-      }
+      hotspot1 = hotspots.at(1).at(0);
     }
-    else
+    else if (hotspots.size() > 0 && hotspots.at(0).size() > 1)
     {
-      hotspot1 = ofVec3f(dummyXY);
+      hotspot1 = hotspots.at(0).at(1);
     }
 
     hotspot3d0 = getDepthAt(hotspot0.x, hotspot0.y);
@@ -251,6 +244,29 @@ void ofApp::updateThermal()
 
 void ofApp::update()
 {
+  if (dummyMode == false)
+  {
+    auto &bodySkeletons = kinectDevice.getBodySkeletons();
+    std::vector<ofVec3f> bodies;
+    if (bodySkeletons.size() >= 2)
+    {
+      for (auto &skeleton : bodySkeletons)
+      {
+        auto joint = skeleton.joints[26];
+        bodies.push_back(toGlm(joint.position));
+      }
+      uBetween = bodies.at(0).getInterpolated(bodies.at(1), 0.5f);
+    }
+    else
+    {
+      uBetween = ofVec3f(10000000, 0, 0);
+    }
+  }
+  else
+  {
+    uBetween = ofVec3f(dummyXY->x, 0, dummyXY->y);
+  }
+
   updateThermal();
 
   particles.update();
@@ -280,6 +296,7 @@ void ofApp::onParticlesDraw(ofxShader &shader)
   shader.setUniform3f("uHottest1", hotspot1);
   shader.setUniform3f("uHottest3d0", hotspot3d0);
   shader.setUniform3f("uHottest3d1", hotspot3d1);
+  shader.setUniform3f("uBetween", uBetween);
 }
 
 void ofApp::drawMain()
diff --git a/zoneb/src/ofApp.h b/zoneb/src/ofApp.h
index c71f059..2fa5991 100644
--- a/zoneb/src/ofApp.h
+++ b/zoneb/src/ofApp.h
@@ -62,6 +62,7 @@ private:
   std::vector<std::vector<ofVec3f>> hotspots;
   ofVec3f hotspot0, hotspot1;
   ofVec3f hotspot3d0, hotspot3d1;
+  ofVec3f uBetween;
 
   ofxVec2Slider registrationXY;
 	ofxFloatSlider registrationScale;