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Compositor: Fixed intersection checking for hotspots

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This commit is contained in:
Fernando García Liñán 2019-05-20 22:53:16 +02:00
parent 4915b7d3a5
commit b9e3ed67f0
1 changed files with 49 additions and 6 deletions
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55
src/Viewer/CameraGroup_compositor.cxx
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@ -830,23 +830,66 @@ osg::Camera* getGUICamera(CameraGroup* cgroup)
return cgroup->getGUICamera()->compositor->getPass(0)->camera; return cgroup->getGUICamera()->compositor->getPass(0)->camera;
} }
static bool
computeCameraIntersection(const CameraGroup *cgroup,
const CameraInfo *cinfo,
const osg::Vec2d &windowPos,
osgUtil::LineSegmentIntersector::Intersections &intersections)
{
if (!(cinfo->flags & CameraInfo::DO_INTERSECTION_TEST))
return false;
const osg::Viewport *viewport = cinfo->compositor->getViewport();
SGRect<double> viewportRect(viewport->x(), viewport->y(),
viewport->x() + viewport->width() - 1.0,
viewport->y() + viewport->height()- 1.0);
double epsilon = 0.5;
if (!viewportRect.contains(windowPos.x(), windowPos.y(), epsilon))
return false;
osg::Vec4d start(windowPos.x(), windowPos.y(), 0.0, 1.0);
osg::Vec4d end(windowPos.x(), windowPos.y(), 1.0, 1.0);
osg::Matrix windowMat = viewport->computeWindowMatrix();
osg::Matrix invViewMat = osg::Matrix::inverse(cinfo->viewMatrix);
osg::Matrix invProjMat = osg::Matrix::inverse(cinfo->projMatrix * windowMat);
start = start * invProjMat;
end = end * invProjMat;
start /= start.w();
end /= end.w();
start = start * invViewMat;
end = end * invViewMat;
osg::ref_ptr<osgUtil::LineSegmentIntersector> picker =
new osgUtil::LineSegmentIntersector(osgUtil::Intersector::MODEL,
osg::Vec3d(start.x(), start.y(), start.z()),
osg::Vec3d(end.x(), end.y(), end.z()));
osgUtil::IntersectionVisitor iv(picker);
iv.setTraversalMask(simgear::PICK_BIT);
const_cast<CameraGroup *>(cgroup)->getViewer()->getCamera()->accept(iv);
if (picker->containsIntersections()) {
intersections = picker->getIntersections();
return true;
}
return false;
}
bool computeIntersections(const CameraGroup* cgroup, bool computeIntersections(const CameraGroup* cgroup,
const osg::Vec2d& windowPos, const osg::Vec2d& windowPos,
osgUtil::LineSegmentIntersector::Intersections& intersections) osgUtil::LineSegmentIntersector::Intersections& intersections)
{ {
// test the GUI first // test the GUI first
CameraInfo* guiCamera = cgroup->getGUICamera(); CameraInfo* guiCamera = cgroup->getGUICamera();
if (guiCamera && guiCamera->compositor->computeIntersection(windowPos, intersections)) if (guiCamera && computeCameraIntersection(cgroup, guiCamera, windowPos, intersections))
return true; return true;
// Find camera that contains event // Find camera that contains event
for (const auto &info : cgroup->_cameras) { for (const auto &cinfo : cgroup->_cameras) {
if (info == guiCamera) if (cinfo == guiCamera)
continue;
if (!(info->flags & CameraInfo::DO_INTERSECTION_TEST))
continue; continue;
if (info->compositor->computeIntersection(windowPos, intersections)) if (computeCameraIntersection(cgroup, cinfo, windowPos, intersections))
return true; return true;
} }