FGFS-4.1/OpenSceneGraph
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Removed remaining dependancies on osg::Camera.

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This commit is contained in:
Robert Osfield
2003-05-19 15:15:17 +00:00
parent 4151312dc5
commit 940ce67133
31 changed files with 506 additions and 616 deletions
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117
src/osgGA/TrackballManipulator.cpp
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@@ -1,4 +1,5 @@
#include <osgGA/TrackballManipulator>
#include <osg/Quat>
#include <osg/Notify>
using namespace osg;
@@ -45,17 +46,15 @@ osg::Node* TrackballManipulator::getNode()
/*ea*/
void TrackballManipulator::home(const GUIEventAdapter& ,GUIActionAdapter& us)
{
if(_node.get() && _camera.get())
if(_node.get())
{
const osg::BoundingSphere& boundingSphere=_node->getBound();
_camera->setView(boundingSphere._center+osg::Vec3( 0.0,-3.5f * boundingSphere._radius,0.0f),
computePosition(boundingSphere._center+osg::Vec3( 0.0,-3.5f * boundingSphere._radius,0.0f),
boundingSphere._center,
osg::Vec3(0.0f,0.0f,1.0f));
computeLocalDataFromCamera();
us.requestRedraw();
}
@@ -65,8 +64,6 @@ void TrackballManipulator::home(const GUIEventAdapter& ,GUIActionAdapter& us)
void TrackballManipulator::init(const GUIEventAdapter& ,GUIActionAdapter& )
{
flushMouseEventStack();
computeLocalDataFromCamera();
}
@@ -79,8 +76,6 @@ void TrackballManipulator::getUsage(osg::ApplicationUsage& usage) const
bool TrackballManipulator::handle(const GUIEventAdapter& ea,GUIActionAdapter& us)
{
if(!_camera.get()) return false;
switch(ea.getEventType())
{
case(GUIEventAdapter::PUSH):
@@ -151,26 +146,9 @@ bool TrackballManipulator::handle(const GUIEventAdapter& ea,GUIActionAdapter& us
us.requestRedraw();
us.requestContinuousUpdate(false);
return true;
} else if (ea.getKey()=='+')
{
_camera->setFusionDistanceRatio(_camera->getFusionDistanceRatio()*1.25f);
return true;
}
else if (ea.getKey()=='-')
{
_camera->setFusionDistanceRatio(_camera->getFusionDistanceRatio()/1.25f);
return true;
}
// this is quick hack to test out othographic projection.
// else if (ea.getKey()=='O')
// {
// float dist = _camera->getLookDistance();
// _camera->setOrtho(-dist,dist,-dist,dist,-dist,dist);
// return true;
// }
return false;
case(GUIEventAdapter::FRAME):
_camera->setFusionDistanceMode(osg::Camera::PROPORTIONAL_TO_LOOK_DISTANCE);
if (_thrown)
{
if (calcMovement()) us.requestRedraw();
@@ -211,39 +189,48 @@ void TrackballManipulator::addMouseEvent(const GUIEventAdapter& ea)
_ga_t0 = &ea;
}
void TrackballManipulator::computeLocalDataFromCamera()
void TrackballManipulator::setByMatrix(const osg::Matrix& matrix)
{
// maths from gluLookAt/osg::Matrix::makeLookAt
osg::Vec3 f(_camera->getCenterPoint()-_camera->getEyePoint());
_center = osg::Vec3(0.0f,0.0f,-_distance)*matrix;//matrix.getTrans();
_rotation.set(matrix);
osg::Matrix rotation_matrix;
_rotation.get(rotation_matrix);
// _center -= osg::Vec3(0.0f,0.0f,_distance)*rotation_matrix;
}
osg::Matrix TrackballManipulator::getMatrix() const
{
return osg::Matrix::translate(0.0f,0.0f,_distance)*osg::Matrix::rotate(_rotation)*osg::Matrix::translate(_center);
}
osg::Matrix TrackballManipulator::getInverseMatrix() const
{
return osg::Matrix::translate(-_center)*osg::Matrix::rotate(_rotation.inverse())*osg::Matrix::translate(0.0f,0.0f,-_distance);
}
void TrackballManipulator::computePosition(const osg::Vec3& eye,const osg::Vec3& center,const osg::Vec3& up)
{
osg::Vec3 lv(center-eye);
osg::Vec3 f(lv);
f.normalize();
osg::Vec3 s(f^_camera->getUpVector());
osg::Vec3 s(f^up);
s.normalize();
osg::Vec3 u(s^f);
u.normalize();
osg::Matrix rotation_matrix(s[0], u[0], -f[0], 0.0f,
s[1], u[1], -f[1], 0.0f,
s[2], u[2], -f[2], 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
_center = _camera->getCenterPoint();
_distance = _camera->getLookDistance();
_center = center;
_distance = lv.length();
_rotation.set(rotation_matrix);
_rotation = _rotation.inverse();
}
void TrackballManipulator::computeCameraFromLocalData()
{
osg::Matrix new_rotation;
new_rotation.makeRotate(_rotation);
osg::Vec3 up = osg::Vec3(0.0f,1.0f,0.0) * new_rotation;
osg::Vec3 eye = (osg::Vec3(0.0f,0.0f,_distance) * new_rotation) + _center;
_camera->setLookAt(eye,_center,up);
}
@@ -260,7 +247,6 @@ bool TrackballManipulator::calcMovement()
// return if there is no movement.
if (dx==0 && dy==0) return false;
float focalLength = (_camera->getCenterPoint()-_camera->getEyePoint()).length();
unsigned int buttonMask = _ga_t1->getButtonMask();
if (buttonMask==GUIEventAdapter::LEFT_MOUSE_BUTTON)
{
@@ -284,8 +270,6 @@ bool TrackballManipulator::calcMovement()
_rotation = _rotation*new_rotate;
computeCameraFromLocalData();
return true;
}
@@ -295,16 +279,15 @@ bool TrackballManipulator::calcMovement()
// pan model.
float scale = -0.5f*focalLength;
float scale = -0.5f*_distance;
osg::Vec3 uv = _camera->getUpVector();
osg::Vec3 sv = _camera->getSideVector();
osg::Vec3 dv = uv*(dy*scale)+sv*(dx*scale);
osg::Matrix rotation_matrix;
_rotation.get(rotation_matrix);
_center += dv;
osg::Vec3 dv(dx*scale,dy*scale,0.0f);
_center += dv*rotation_matrix;
computeCameraFromLocalData();
return true;
}
@@ -313,15 +296,13 @@ bool TrackballManipulator::calcMovement()
// zoom model.
float fd = focalLength;
float fd = _distance;
float scale = 1.0f+dy;
if (fd*scale>_modelScale*_minimumZoomScale)
{
_distance *= scale;
computeCameraFromLocalData();
}
else
{
@@ -329,12 +310,14 @@ bool TrackballManipulator::calcMovement()
// notify(DEBUG_INFO) << "Pushing forward"<<std::endl;
// push the camera forward.
float scale = -fd;
osg::Vec3 dv = _camera->getLookVector()*(dy*scale);
osg::Matrix rotation_matrix;
_rotation.get(rotation_matrix);
osg::Vec3 dv = (osg::Vec3(0.0f,0.0f,-1.0f)*rotation_matrix)*(dy*scale);
_center += dv;
computeCameraFromLocalData();
}
return true;
@@ -373,9 +356,13 @@ void TrackballManipulator::trackball(osg::Vec3& axis,float& angle, float p1x, fl
* deformed sphere
*/
osg::Vec3 uv = _camera->getUpVector();
osg::Vec3 sv = _camera->getSideVector();
osg::Vec3 lv = _camera->getLookVector();
osg::Matrix rotation_matrix;
_rotation.get(rotation_matrix);
osg::Vec3 uv = osg::Vec3(0.0f,1.0f,0.0f)*rotation_matrix;
osg::Vec3 sv = osg::Vec3(1.0f,0.0f,0.0f)*rotation_matrix;
osg::Vec3 lv = osg::Vec3(0.0f,0.0f,-1.0f)*rotation_matrix;
osg::Vec3 p1 = sv*p1x+uv*p1y-lv*tb_project_to_sphere(TRACKBALLSIZE,p1x,p1y);
osg::Vec3 p2 = sv*p2x+uv*p2y-lv*tb_project_to_sphere(TRACKBALLSIZE,p2x,p2y);