Solve precision problem that causes jagged movement.

include/openspace/util/camera.h

@@ -73,9 +73,9 @@ namespace openspace {
         // now working with float precision. To be changed to double later.
         // The reason double does not work yet is because of the setUniform function
         // in ghoul::opengl
-        typedef glm::quat Quat;
-        typedef glm::mat4 Mat4;
-        typedef glm::vec3 Vec3;
+        typedef glm::dquat Quat;
+        typedef glm::dmat4 Mat4;
+        typedef glm::dvec3 Vec3;
 
         // Static constants
         static const Vec3 _VIEW_DIRECTION_CAMERA_SPACE;

src/interaction/interactionhandler.cpp

@@ -940,10 +940,10 @@ void GlobeBrowsingInteractionMode::updateCameraStateFromMouseStates() {
                 0);
             glm::dquat rotationDiffCamSpace = glm::dquat(eulerAngles);
 
-            glm::dquat newRotationCamspace =
-                _globalCameraRotation * rotationDiffCamSpace;
             glm::dquat rotationDiffWorldSpace =
-                newRotationCamspace * glm::inverse(_globalCameraRotation);
+                _globalCameraRotation *
+                rotationDiffCamSpace *
+                glm::inverse(_globalCameraRotation);
 
             glm::dvec3 rotationDiffVec3 =
                 (distFromCenterToCamera * directionFromSurfaceToCamera)

src/util/camera.cpp

@@ -43,8 +43,8 @@ namespace openspace {
         , _focusPosition()
     {
         _scaling.local = glm::vec2(1.f, 0.f);
-        _position.local = Vec3(0, 0, 0);
-        Vec3 eulerAngles(0, 0, 0);
+        _position.local = Vec3(1.0, 1.0, 1.0);
+        Vec3 eulerAngles(1.0, 1.0, 1.0);
         _rotation.local = Quat(eulerAngles);
     }
 
@@ -153,9 +153,8 @@ namespace openspace {
 
     const Camera::Mat4& Camera::combinedViewMatrix() const {
         if (_cachedCombinedViewMatrix.isDirty) {
-            Vec3 cameraPosition = position().vec3();
             Mat4 cameraTranslation =
-                glm::inverse(glm::translate(Mat4(1.0), cameraPosition));
+                glm::inverse(glm::translate(Mat4(1.0), _position.shared));
             _cachedCombinedViewMatrix.datum =
                 Mat4(viewRotationMatrix()) * cameraTranslation;
         }