FGFS-4.1/OpenSceneGraph
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Updates to the support for stereo in osg::Camera, osgUtil::SceneView and

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the CameraManipulators.
This commit is contained in:
Robert Osfield
2001-12-21 13:07:35 +00:00
parent 9365f0e3b1
commit 734be18471
6 changed files with 83 additions and 32 deletions
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60
include/osg/Camera
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@@ -125,15 +125,8 @@ class SG_EXPORT Camera: public osg::Referenced
const Matrix& getProjectionMatrix() const;
/** set the fusion distance, the distance in model coords, when viewing stereo, that the
* left and right eye images converge. This value is dual of the screen distance,
* which is distance between viewers eyes and display device, while the fusion distance is
* this equivilant distance but in the virtual world (model coords.)*/
inline const double setFusionDistance() const { return _fusionDistance; }
/** get fusion distance.*/
inline const double getFusionDistance() const { return _fusionDistance; }
enum LookAtType
@@ -195,7 +188,8 @@ class SG_EXPORT Camera: public osg::Referenced
/** calculate side vector.*/
const Vec3 getSideVector() const;
/** calculate the look distance which is the distance between the eye and the center.*/
inline float getLookDistance() const { return (_center-_eye).length(); }
enum TransformMode
{
@@ -274,11 +268,46 @@ class SG_EXPORT Camera: public osg::Referenced
const bool unproject(const Vec3& win,const Viewport& viewport,Vec3& obj) const;
enum FusionDistanceMode
{
PROPORTIONAL_TO_LOOK_DISTANCE,
PROPORTIONAL_TO_SCREEN_DISTANCE
};
/** Set the fusion distance function which in use to calculate the
* fusion distance used in stereo rendering. Default value is
* PROPORTIONAL_TO_LOOK_DISTANCE, 1.0f.*/
void setFusionDistanceFunction(FusionDistanceMode mode, float ratio=1.0f)
{
_fusionDistanceMode = mode;
_fusionDistanceRatio = ratio;
_dirty = true;
}
/** Get the fusion distance function.*/
void getFusionDistanceFunction(FusionDistanceMode& mode, float& ratio)
{
mode = _fusionDistanceMode;
ratio = _fusionDistanceRatio;
}
/** Calculate and return the fusion distance, using the FusionDistanceFunction.*/
const float getFusionDistance() const;
/** Set the physical distance between the viewers eyes and the display system.
* Note, only used when rendering in stereo.*/
void setScreenDistance(float screenDistance) { _screenDistance = screenDistance; _dirty = true; }
/** Get the physical distance between the viewers eyes and the display system.*/
const float getScreenDistance() const { return _screenDistance; }
/** Convinience method for adjusting the project and model view to account for
* and eye offset, as used in stereo work, assumes that the users will use
* a seperate camera for each eye, adjustEyePointForStereo(..) being used to
* specialize the camera for each eye view.*/
void adjustEyeOffsetForStereo(const osg::Vec3& offset,float screenDistance);
void adjustEyeOffsetForStereo(const osg::Vec3& offset);
/** Set up the OpenGL projection and model view matrices.*/
virtual void apply(State& state);
@@ -312,8 +341,6 @@ class SG_EXPORT Camera: public osg::Referenced
Vec3 _center;
Vec3 _up;
double _fusionDistance;
TransformMode _attachedTransformMode;
ref_ptr<Matrix> _eyeToModelTransform;
ref_ptr<Matrix> _modelToEyeTransform;
@@ -334,9 +361,12 @@ class SG_EXPORT Camera: public osg::Referenced
void calculateMatricesAndClippingVolume() const;
// used for offsetting camera to ajust for left and right stereo views.
bool _useEyeOffset;
osg::Vec3 _eyeOffset;
float _screenDistance;
bool _useEyeOffset;
osg::Vec3 _eyeOffset;
float _screenDistance;
FusionDistanceMode _fusionDistanceMode;
float _fusionDistanceRatio;
};