diff --git a/avogadro/rendering/CMakeLists.txt b/avogadro/rendering/CMakeLists.txt
index 02533642f0..ddebfe8483 100644
--- a/avogadro/rendering/CMakeLists.txt
+++ b/avogadro/rendering/CMakeLists.txt
@@ -95,10 +95,6 @@ target_sources(Rendering PRIVATE
   ambientocclusionspheregeometry.cpp
 )
 
-if(USE_3DCONNEXION AND (WIN32 OR APPLE))
-  target_sources(Rendering PRIVATE tdxextensions.cpp)
-endif()
-
 set(shader_files
   "arrow_vs.glsl"
   "cylinders_fs.glsl"
diff --git a/avogadro/rendering/camera.cpp b/avogadro/rendering/camera.cpp
index 6970e74760..528a238af0 100644
--- a/avogadro/rendering/camera.cpp
+++ b/avogadro/rendering/camera.cpp
@@ -132,7 +132,7 @@ Vector3f Camera::unProject(const Vector2f& point,
 }
 
 void Camera::calculatePerspective(float fieldOfView, float aspectRatio,
-								  float zNear, float zFar)
+                                  float zNear, float zFar)
 {
   m_data->projection.setIdentity();
   float f = 1.0f / std::tan(fieldOfView * float(M_PI) / 360.0f);
@@ -152,7 +152,7 @@ void Camera::calculatePerspective(float fieldOfView, float zNear, float zFar)
 }
 
 void Camera::calculateOrthographic(float left, float right, float bottom,
-								   float top, float zNear, float zFar)
+                                   float top, float zNear, float zFar)
 {
   left *= m_orthographicScale;
   right *= m_orthographicScale;
@@ -184,4 +184,20 @@ void Camera::setModelView(const Eigen::Affine3f& transform)
   m_data->modelView = transform;
 }
 
+void Camera::calculatePerspective(float left, float right,
+                                  float bottom, float top,
+                                  float zNear, float zFar)
+{
+  m_data->projection.setIdentity();
+
+  m_data->projection(0, 0) = (2.0f * zNear) / (right - left);
+  m_data->projection(1, 1) = (2.0f * zNear) / (top - bottom);
+  m_data->projection(0, 2) = (right + left) / (right - left);
+  m_data->projection(1, 2) = (top + bottom) / (top - bottom);
+  m_data->projection(2, 2) = -(zFar + zNear) / (zFar - zNear);
+  m_data->projection(3, 2) = -1.0f;
+  m_data->projection(2, 3) = -(2.0f * zFar * zNear) / (zFar - zNear);
+  m_data->projection(3, 3) = 0.0f;
+}
+
 } // namespace Avogadro
diff --git a/avogadro/rendering/camera.h b/avogadro/rendering/camera.h
index d5072c8763..2a584f5520 100644
--- a/avogadro/rendering/camera.h
+++ b/avogadro/rendering/camera.h
@@ -100,7 +100,7 @@ class AVOGADRORENDERING_EXPORT Camera
    * reference point (defaults to the origin if nothing is supplied).
    */
   Vector3f unProject(const Vector2f& point,
-					 const Vector3f& reference = Vector3f::Zero()) const;
+                     const Vector3f& reference = Vector3f::Zero()) const;
 
   /**
    * Calculate the perspective projection matrix.
@@ -110,7 +110,7 @@ class AVOGADRORENDERING_EXPORT Camera
    * @param zFar is the distance from the viewer to the far clipping plane.
    */
   void calculatePerspective(float fieldOfView, float aspectRatio, float zNear,
-							float zFar);
+                            float zFar);
 
   /**
    * Calculate the perspective projection matrix. Computes the aspect ratio
@@ -120,7 +120,7 @@ class AVOGADRORENDERING_EXPORT Camera
    * @param zFar is the distance from the viewer to the far clipping plane.
    */
   void calculatePerspective(float fieldOfView, float zNear, float zFar);
-#ifdef _3DCONNEXION
+
   /**
    * << API Extension for TDX >>
    * Calculate the perspective projection matrix using frustum planes
@@ -134,7 +134,7 @@ class AVOGADRORENDERING_EXPORT Camera
    */
   void calculatePerspective(float left, float right, float bottom, float top,
                             float zNear, float zFar);
-#endif
+
   /**
    * Calculate the orthographic projection matrix.
    * @param left left vertical clipping plane.
@@ -145,7 +145,7 @@ class AVOGADRORENDERING_EXPORT Camera
    * @param zFar distance to the far clipping plane.
    */
   void calculateOrthographic(float left, float right, float bottom, float top,
-							 float zNear, float zFar);
+                             float zNear, float zFar);
 
   /**
    * Set the dimensions of the viewport in pixels.
diff --git a/avogadro/rendering/geometryvisitor.cpp b/avogadro/rendering/geometryvisitor.cpp
index bf471f9b21..d9c0a69686 100644
--- a/avogadro/rendering/geometryvisitor.cpp
+++ b/avogadro/rendering/geometryvisitor.cpp
@@ -9,9 +9,6 @@
 #include "curvegeometry.h"
 #include "linestripgeometry.h"
 #include "spheregeometry.h"
-#ifdef _3DCONNEXION
-#include "cylindergeometry.h"
-#endif
 
 namespace Avogadro::Rendering {
 
@@ -30,9 +27,6 @@ void GeometryVisitor::visit(Drawable&)
 
 void GeometryVisitor::visit(SphereGeometry& geometry)
 {
-#ifdef _3DCONNEXION
-  m_sphereGeometries.push_back(geometry);
-#endif
   const Core::Array<SphereColor>& spheres = geometry.spheres();
   if (!spheres.size())
     return;
@@ -53,9 +47,7 @@ void GeometryVisitor::visit(SphereGeometry& geometry)
       float distance = (it->center - tmpCenter).squaredNorm();
       if (distance > tmpRadius)
         tmpRadius = distance;
-#ifdef _3DCONNEXION
       m_spheres.push_back(*it);
-#endif
     }
   }
   tmpRadius = std::sqrt(tmpRadius);
@@ -154,11 +146,7 @@ void GeometryVisitor::clear()
   m_dirty = false;
   m_centers.clear();
   m_radii.clear();
-#ifdef _3DCONNEXION
   m_spheres.clear();
-  m_sphereGeometries.clear();
-  m_cylinderGeometries.clear();
-#endif
 }
 
 Vector3f GeometryVisitor::center()
@@ -201,4 +189,55 @@ void GeometryVisitor::average()
   }
 }
 
+void GeometryVisitor::boundingBox(double& minX, double& minY, double& minZ,
+                                  double& maxX, double& maxY, double& maxZ,
+                                  const std::vector<bool>& flags) const
+{
+  minX = std::numeric_limits<double>::max();
+  minY = minX;
+  minZ = minX;
+  maxX = -minX;
+  maxY = maxX;
+  maxZ = maxX;
+
+  bool noSelection = true;
+
+  for (uint32_t i = 0; i < flags.size(); i++) {
+    if (flags[i]) {
+      noSelection = false;
+      break;
+    }
+  }
+
+  for (uint32_t i = 0; i < m_spheres.size(); i++) {
+    if (flags.empty() || noSelection || flags[i]) {
+      float radius = m_spheres[i].radius + 0.5f;
+      double bufferMinX = m_spheres[i].center.x() - radius;
+      double bufferMinY = m_spheres[i].center.y() - radius;
+      double bufferMinZ = m_spheres[i].center.z() - radius;
+      double bufferMaxX = m_spheres[i].center.x() + radius;
+      double bufferMaxY = m_spheres[i].center.y() + radius;
+      double bufferMaxZ = m_spheres[i].center.z() + radius;
+
+      if (bufferMinX < minX)
+        minX = bufferMinX;
+
+      if (bufferMinY < minY)
+        minY = bufferMinY;
+
+      if (bufferMinZ < minZ)
+        minZ = bufferMinZ;
+
+      if (bufferMaxX > maxX)
+        maxX = bufferMaxX;
+
+      if (bufferMaxY > maxY)
+        maxY = bufferMaxY;
+
+      if (bufferMaxZ > maxZ)
+        maxZ = bufferMaxZ;
+    }
+  }
+}
+
 } // End namespace Avogadro
diff --git a/avogadro/rendering/geometryvisitor.h b/avogadro/rendering/geometryvisitor.h
index 5b15df449c..c07730ae5a 100644
--- a/avogadro/rendering/geometryvisitor.h
+++ b/avogadro/rendering/geometryvisitor.h
@@ -25,11 +25,7 @@ namespace Rendering {
  * notably the center and radius of the bounding sphere.
  */
 
-#ifdef _3DCONNEXION
 struct SphereColor;
-class SphereGeometry;
-class CylinderGeometry;
-#endif
 
 class GeometryVisitor : public Visitor
 {
@@ -47,11 +43,7 @@ class GeometryVisitor : public Visitor
   void visit(SphereGeometry&) override;
   void visit(AmbientOcclusionSphereGeometry&) override;
   void visit(CurveGeometry&) override;
-#ifdef _3DCONNEXION
-  void visit(CylinderGeometry&) override;
-#else
   void visit(CylinderGeometry&) override { return; }
-#endif
   void visit(MeshGeometry&) override { return; }
   void visit(TextLabel2D&) override { return; }
   void visit(TextLabel3D&) override { return; }
@@ -71,7 +63,7 @@ class GeometryVisitor : public Visitor
    * Get the radius of the scene.
    */
   float radius();
-#ifdef _3DCONNEXION
+
   /**
    * <<API Extension for TDX>>
    * Calculates the bounding box of the molecule.
@@ -88,17 +80,6 @@ class GeometryVisitor : public Visitor
                    double& maxY, double& maxZ,
                    const std::vector<bool>& flags) const;
 
-  /**
-   * <<API Extension for TDX>>
-   * Hit-tests underlying geometry.
-   * @param rayOrigin Origin of the ray.
-   * @param rayDirection Normalized direction of the ray.
-   * @return Distance to the intersection point lying on the passed ray.
-   * If returned value is less than zero, then there is no intersection.
-   */
-  float hit(const Vector3f& rayOrigin, const Vector3f& rayDirection,
-            const float rayLength);
-#endif
 private:
   /**
    * Get the average of the accumulated spherical centers and minimal radius.
@@ -111,11 +92,7 @@ class GeometryVisitor : public Visitor
 
   std::vector<Vector3f> m_centers;
   std::vector<float> m_radii;
-#ifdef _3DCONNEXION
   std::vector<SphereColor> m_spheres;
-  std::vector<SphereGeometry> m_sphereGeometries;
-  std::vector<CylinderGeometry> m_cylinderGeometries;
-#endif
 };
 
 } // End namespace Rendering
diff --git a/avogadro/rendering/glrenderer.cpp b/avogadro/rendering/glrenderer.cpp
index 8e94b1cb7b..e2a13f366e 100644
--- a/avogadro/rendering/glrenderer.cpp
+++ b/avogadro/rendering/glrenderer.cpp
@@ -34,7 +34,7 @@ GLRenderer::GLRenderer()
 #endif
 {
   m_overlayCamera.setIdentity();
-#ifdef _3DCONNEXION
+
   float aspectRatio = static_cast<float>(m_camera.width()) /
                       static_cast<float>(m_camera.height());
   float distance = m_camera.distance(m_center);
@@ -45,7 +45,7 @@ GLRenderer::GLRenderer()
   m_orthographicFrustum = {
     -5.0f * aspectRatio, 5.0f * aspectRatio, -5.0f, 5.0f, -offset, offset
   };
-#endif
+
 }
 
 GLRenderer::~GLRenderer()
@@ -204,12 +204,9 @@ void GLRenderer::setTextRenderStrategy(TextRenderStrategy* tren)
 void GLRenderer::applyProjection()
 {
   float distance = m_camera.distance(m_center);
-#ifdef _3DCONNEXION
   float aspectRatio = static_cast<float>(m_camera.width()) /
                       static_cast<float>(m_camera.height());
-#endif
   if (m_camera.projectionType() == Perspective) {
-#ifdef _3DCONNEXION
     m_perspectiveFrustum[0] = m_perspectiveFrustum[2] * aspectRatio;
     m_perspectiveFrustum[1] = m_perspectiveFrustum[3] * aspectRatio;
     m_perspectiveFrustum[5] = distance + m_radius;
@@ -217,13 +214,8 @@ void GLRenderer::applyProjection()
       m_perspectiveFrustum[0], m_perspectiveFrustum[1], m_perspectiveFrustum[2],
       m_perspectiveFrustum[3], m_perspectiveFrustum[4],
       m_perspectiveFrustum[5]);
-#else
-    m_camera.calculatePerspective(40.0f, std::max(2.0f, distance - m_radius),
-                                  distance + m_radius);
-#endif
   } else {
     // Renders the orthographic projection of the molecule
-#ifdef _3DCONNEXION
     m_orthographicFrustum[0] = m_orthographicFrustum[2] * aspectRatio;
     m_orthographicFrustum[1] = m_orthographicFrustum[3] * aspectRatio;
     m_orthographicFrustum[5] = distance + m_radius;
@@ -234,13 +226,6 @@ void GLRenderer::applyProjection()
                                    m_orthographicFrustum[3],  // T
                                    m_orthographicFrustum[4],  // N
                                    m_orthographicFrustum[5]); // F
-#else
-    const double halfHeight = m_radius;
-    const double halfWidth = halfHeight * m_camera.width() / m_camera.height();
-    m_camera.calculateOrthographic(
-      -halfWidth, halfWidth, -halfHeight, halfHeight,
-      std::max(2.0f, distance - m_radius), distance + m_radius);
-#endif
   }
   m_overlayCamera.calculateOrthographic(
     0.f, static_cast<float>(m_overlayCamera.width()), 0.f,
@@ -320,6 +305,17 @@ Array<Identifier> GLRenderer::hits(const GroupNode* group,
   return result;
 }
 
+float GLRenderer::hit(const Vector3f& rayOrigin,
+                      const Vector3f& rayEnd,
+                      const Vector3f& rayDirection) const
+{
+  std::multimap<float, Identifier> results =
+    hits(&m_scene.rootNode(), rayOrigin, rayEnd, rayDirection);
+  if (results.size())
+    return results.begin()->first;
+  return std::numeric_limits<float>::max();
+}
+
 Array<Identifier> GLRenderer::hits(int x1, int y1, int x2, int y2) const
 {
   // Figure out where the corners of our rectangle are.
diff --git a/avogadro/rendering/glrenderer.h b/avogadro/rendering/glrenderer.h
index 34136bca17..0e3a59e925 100644
--- a/avogadro/rendering/glrenderer.h
+++ b/avogadro/rendering/glrenderer.h
@@ -68,6 +68,12 @@ class AVOGADRORENDERING_EXPORT GLRenderer
    */
   Identifier hit(int x, int y) const;
 
+  /** Return the depth of provided ray - geometry hit test.
+   */
+  float hit(const Vector3f& rayOrigin,
+            const Vector3f& rayEnd,
+            const Vector3f& rayDirection) const;
+
   /** Return the primitives in the rectangular area provided. */
   Core::Array<Identifier> hits(int x1, int y1, int x2, int y2) const;
 
@@ -104,9 +110,9 @@ class AVOGADRORENDERING_EXPORT GLRenderer
   void setTextRenderStrategy(TextRenderStrategy* tren);
   /** @} */
 
-#ifdef _3DCONNEXION
   std::array<float, 6> m_perspectiveFrustum;  // L, R, B, T, N, F (planes order)
   std::array<float, 6> m_orthographicFrustum; // L, R, B, T, N, F (planes order)
+#ifdef _3DCONNEXION
   bool m_drawIcon;
   void* m_iconData;
   uint32_t m_iconWidth;
diff --git a/avogadro/rendering/scene.cpp b/avogadro/rendering/scene.cpp
index edc3e1b1ce..1e6c158e1b 100644
--- a/avogadro/rendering/scene.cpp
+++ b/avogadro/rendering/scene.cpp
@@ -53,4 +53,14 @@ void Scene::clear()
   m_dirty = true;
 }
 
+void Scene::getBoundingBox(double& minX, double& minY, double& minZ,
+                           double& maxX, double& maxY, double& maxZ,
+                           const std::vector<bool>& flags)
+{
+  GeometryVisitor visitor;
+
+  m_rootNode.accept(visitor);
+  visitor.boundingBox(minX, minY, minZ, maxX, maxY, maxZ, flags);
+}
+
 } // End Avogadro namespace
diff --git a/avogadro/rendering/scene.h b/avogadro/rendering/scene.h
index aa72e7e722..e29c250b44 100644
--- a/avogadro/rendering/scene.h
+++ b/avogadro/rendering/scene.h
@@ -130,7 +130,7 @@ class AVOGADRORENDERING_EXPORT Scene
 
   /** Clear the scene of all elements. */
   void clear();
-#ifdef _3DCONNEXION
+
   /**
    * <<API Extension for TDX>>
    * Calculte and return bounding box of the scene objects.
@@ -147,18 +147,6 @@ class AVOGADRORENDERING_EXPORT Scene
                       double& maxY, double& maxZ,
                       const std::vector<bool>& flags);
 
-  /** <<API Extension for TDX>>
-   * Return distance from ray origin to the ray with scene content instersection
-   * point.
-   * @param rayOrigin Origin of the ray.
-   * @param rayEnd End point of the ray.
-   * @param rayDirection Normalized direction of the ray.
-   * @return Distance to the intersection point lying on the passed ray. If
-   * returned value is less than zero, then there is no intersection.
-   */
-  float getHitDistance(const Vector3f& rayOrigin, const Vector3f& rayDirection,
-                       const float rayLength);
-#endif
 private:
   GroupNode m_rootNode;
   Vector4ub m_backgroundColor;
diff --git a/avogadro/rendering/tdxextensions.cpp b/avogadro/rendering/tdxextensions.cpp
deleted file mode 100644
index f8568dafde..0000000000
--- a/avogadro/rendering/tdxextensions.cpp
+++ /dev/null
@@ -1,141 +0,0 @@
-/******************************************************************************
-  This source file is part of the Avogadro project.
-  This source code is released under the 3-Clause BSD License, (see "LICENSE").
-******************************************************************************/
-
-#include "camera.h"
-#include "cylindergeometry.h"
-#include "geometryvisitor.h"
-#include "scene.h"
-#include "spheregeometry.h"
-
-void Avogadro::Rendering::Camera::calculatePerspective(float left, float right,
-                                                       float bottom, float top,
-                                                       float zNear, float zFar)
-{
-  m_data->projection.setIdentity();
-
-  m_data->projection(0, 0) = (2.0f * zNear) / (right - left);
-  m_data->projection(1, 1) = (2.0f * zNear) / (top - bottom);
-  m_data->projection(0, 2) = (right + left) / (right - left);
-  m_data->projection(1, 2) = (top + bottom) / (top - bottom);
-  m_data->projection(2, 2) = -(zFar + zNear) / (zFar - zNear);
-  m_data->projection(3, 2) = -1.0f;
-  m_data->projection(2, 3) = -(2.0f * zFar * zNear) / (zFar - zNear);
-  m_data->projection(3, 3) = 0.0f;
-}
-
-void Avogadro::Rendering::Scene::getBoundingBox(double& minX, double& minY,
-                                                double& minZ, double& maxX,
-                                                double& maxY, double& maxZ,
-                                                const std::vector<bool>& flags)
-{
-  GeometryVisitor visitor;
-
-  m_rootNode.accept(visitor);
-  visitor.boundingBox(minX, minY, minZ, maxX, maxY, maxZ, flags);
-}
-
-float Avogadro::Rendering::Scene::getHitDistance(const Vector3f& rayOrigin,
-                                                 const Vector3f& rayDirection,
-                                                 const float rayLength)
-{
-  GeometryVisitor visitor;
-
-  m_rootNode.accept(visitor);
-  return visitor.hit(rayOrigin, rayDirection, rayLength);
-}
-
-void Avogadro::Rendering::GeometryVisitor::visit(CylinderGeometry& geometry)
-{
-  m_cylinderGeometries.push_back(geometry);
-}
-
-void Avogadro::Rendering::GeometryVisitor::boundingBox(
-  double& minX, double& minY, double& minZ, double& maxX, double& maxY,
-  double& maxZ, const std::vector<bool>& flags) const
-{
-  minX = std::numeric_limits<double>::max();
-  minY = minX;
-  minZ = minX;
-  maxX = -minX;
-  maxY = maxX;
-  maxZ = maxX;
-
-  bool noSelection = true;
-
-  for (uint32_t i = 0; i < flags.size(); i++) {
-    if (flags[i]) {
-      noSelection = false;
-      break;
-    }
-  }
-
-  for (uint32_t i = 0; i < m_spheres.size(); i++) {
-
-    if (flags.empty() || noSelection || flags[i]) {
-
-      float radius = m_spheres[i].radius + 0.5f;
-
-      double bufferMinX = m_spheres[i].center.x() - radius;
-      double bufferMinY = m_spheres[i].center.y() - radius;
-      double bufferMinZ = m_spheres[i].center.z() - radius;
-      double bufferMaxX = m_spheres[i].center.x() + radius;
-      double bufferMaxY = m_spheres[i].center.y() + radius;
-      double bufferMaxZ = m_spheres[i].center.z() + radius;
-
-      if (bufferMinX < minX)
-        minX = bufferMinX;
-
-      if (bufferMinY < minY)
-        minY = bufferMinY;
-
-      if (bufferMinZ < minZ)
-        minZ = bufferMinZ;
-
-      if (bufferMaxX > maxX)
-        maxX = bufferMaxX;
-
-      if (bufferMaxY > maxY)
-        maxY = bufferMaxY;
-
-      if (bufferMaxZ > maxZ)
-        maxZ = bufferMaxZ;
-    }
-  }
-}
-
-float Avogadro::Rendering::GeometryVisitor::hit(const Vector3f& rayOrigin,
-                                                const Vector3f& rayDirection,
-                                                const float rayLength)
-{
-  auto minDistance = [rayOrigin, rayDirection, rayLength](
-                       const std::vector<const Drawable*>& drawables) -> float {
-    float result = std::numeric_limits<float>::max();
-
-    for (auto& drawable : drawables) {
-      std::multimap<float, Avogadro::Rendering::Identifier> hitsMap =
-        drawable->hits(rayOrigin, rayOrigin + rayLength * rayDirection,
-                       rayDirection);
-
-      for (auto& hit : hitsMap) {
-        if (hit.first < result)
-          result = hit.first;
-      }
-    }
-    return result;
-  };
-
-  std::vector<const Drawable*> pDrawables;
-  pDrawables.reserve(m_sphereGeometries.size() + m_cylinderGeometries.size());
-
-  for (auto& m_sphereGeometry : m_sphereGeometries)
-    pDrawables.push_back(&m_sphereGeometry);
-
-  for (auto& m_cylinderGeometry : m_cylinderGeometries)
-    pDrawables.push_back(&m_cylinderGeometry);
-
-  float result = minDistance(pDrawables);
-
-  return result < std::numeric_limits<float>::max() ? result : -1.0f;
-}