various stuff in opengl demos such as a better model,

stable trackball for the fly navigation mode, and started
to put some GUI elements...

1 files changed, 9 insertions, 2 deletions

diff --git a/demos/opengl/camera.cpp b/demos/opengl/camera.cpp
index 26118e6ba..f704771b6 100644
--- a/demos/opengl/camera.cpp
+++ b/demos/opengl/camera.cpp
@@ -42,8 +42,7 @@ Camera::Camera()
     mVpX = 0;
     mVpY = 0;
 
-    setPosition(Vector3f::Constant(50.));
-
+    setPosition(Vector3f::Constant(100.));
     setTarget(Vector3f::Zero());
 }
 
@@ -179,6 +178,14 @@ void Camera::rotateAroundTarget(const Quaternionf& q)
     mViewIsUptodate = true;
 }
 
+void Camera::localRotate(const Quaternionf& q)
+{
+    float dist = (position() - mTarget).norm();
+    setOrientation(orientation() * q);
+    mTarget = position() + dist * direction();
+    mViewIsUptodate = false;
+}
+
 void Camera::zoom(float d)
 {
     float dist = (position() - mTarget).norm();