GeoPatch/GeoSphere refactoring

src/Camera.cpp

@@ -177,7 +177,7 @@ void Camera::Update()
 
 		// cull off-screen objects
 		double rad = b->GetClipRadius();
-		if (!m_context->GetFrustum().TestPointInfinite(attrs.viewCoords, rad))
+		if (!m_context->GetFrustum().TestSphereInfinite(attrs.viewCoords, rad))
 			continue;
 
 		attrs.camDist = attrs.viewCoords.Length();

src/CityOnPlanet.cpp

@@ -677,7 +677,7 @@ void CityOnPlanet::Render(Graphics::Renderer *r, const CameraContext *camera, co
 	// Early frustum test of whole city.
 	const vector3d stationPos = viewTransform * (station->GetPosition() + m_realCentre);
 
-	if (!camera->GetFrustum().TestPoint(stationPos, m_clipRadius))
+	if (!camera->GetFrustum().TestSphere(stationPos, m_clipRadius))
 		return;
 
 	// Use the station-centered frame-oriented coordinate system we generated building positions in
@@ -736,7 +736,7 @@ void CityOnPlanet::Render(Graphics::Renderer *r, const CameraContext *camera, co
 		for (size_t i = 0; i < m_enabledBuildings.size(); i++) {
 			const auto &building = m_enabledBuildings[i];
 
-			if (!frustum.TestPoint(building.pos, building.clipRadius))
+			if (!frustum.TestSphere(building.pos, building.clipRadius))
 				continue;
 
 			transform[building.instIndex].emplace_back(m_instanceTransforms[i]);

src/GasGiant.cpp

@@ -258,7 +258,7 @@ class GasPatch {
 
 	void Render(Graphics::Renderer *renderer, const vector3d &campos, const matrix4x4d &modelView, const Graphics::Frustum &frustum)
 	{
-		if (!frustum.TestPoint(clipCentroid, clipRadius))
+		if (!frustum.TestSphere(clipCentroid, clipRadius))
 			return;
 
 		const vector3d relpos = clipCentroid - campos;