void
NavigateAxisArray::ZoomHorizontal(double f)
{
vtkRenderWindowInteractor *rwi = Interactor;
//
// Calculate the zoom factor.
//
double zoomFactor = pow((double)1.1, f);
//
// Calculate the new parallel scale.
//
VisWindow *vw = proxy;
avtViewAxisArray newViewAxisArray = vw->GetViewAxisArray();
double xDist = newViewAxisArray.domain[1] - newViewAxisArray.domain[0];
double dX = ((1. / zoomFactor) - 1.) * (xDist / 2.);
newViewAxisArray.domain[0] -= dX;
newViewAxisArray.domain[1] += dX;
vw->SetViewAxisArray(newViewAxisArray);
}
void
NavigateAxisArray::ZoomVertical(double f)
{
vtkRenderWindowInteractor *rwi = Interactor;
//
// Calculate the zoom factor.
//
double zoomFactor = pow((double)1.1, f);
//
// Calculate the new parallel scale.
//
VisWindow *vw = proxy;
avtViewAxisArray newViewAxisArray = vw->GetViewAxisArray();
double yDist = newViewAxisArray.range[1] - newViewAxisArray.range[0];
double dY = ((1. / zoomFactor) - 1.) * (yDist / 2.);
newViewAxisArray.range[0] -= dY;
newViewAxisArray.range[1] += dY;
vw->SetViewAxisArray(newViewAxisArray);
}
void
NavigateAxisArray::ZoomVerticalFixed(double f)
{
vtkRenderWindowInteractor *rwi = Interactor;
VisWindow *vw = proxy;
avtViewAxisArray newViewAxisArray = vw->GetViewAxisArray();
newViewAxisArray.range[0] -= f;
newViewAxisArray.range[1] += f;
if (newViewAxisArray.range[0] >= newViewAxisArray.domain[1])
{
newViewAxisArray.range[0] += f;
newViewAxisArray.range[1] -= f;
}
vw->SetViewAxisArray(newViewAxisArray);
}
void
NavigateAxisArray::PanCamera(const int x, const int y, bool snap_horiz)
{
vtkRenderWindowInteractor *rwi = Interactor;
if ((OldX != x) || (OldY != y))
{
//
// Determine the size of the window.
//
int size[2];
rwi->GetSize(size);
//
// Get the current view information.
//
VisWindow *vw = proxy;
double pan[2];
avtViewAxisArray newView = vw->GetViewAxisArray();
double xscale = (newView.domain[1] - newView.domain[0]) /
((newView.viewport[1] - newView.viewport[0]) * (double)(size[0]));
double yscale = (newView.range[1] - newView.range[0]) /
((newView.viewport[3] - newView.viewport[2]) * (double)(size[0]));
pan[0] = (double)(x - OldX) * xscale;
pan[1] = (double)(y - OldY) * yscale;
newView.domain[0] -= pan[0];
newView.domain[1] -= pan[0];
newView.range[0] -= pan[1];
newView.range[1] -= pan[1];
// perform a horizontal snap
int newX = x;
if (snap_horiz)
{
double dx0 = newView.domain[0] - double(int(newView.domain[0]));
double dx1 = newView.domain[1] - double(int(newView.domain[1]));
double dx0check = dx0 / (newView.domain[1] - newView.domain[0]);
double dx1check = dx1 / (newView.domain[1] - newView.domain[0]);
const double threshold = 0.025;
if (fabs(dx0check) < threshold)
{
newView.domain[0] -= dx0;
newView.domain[1] -= dx0;
newX += int(.5 + dx0 / xscale);
}
else if (fabs(dx1check) < threshold)
{
newView.domain[0] -= dx1;
newView.domain[1] -= dx1;
newX += int(.5 + dx1 / xscale);
}
}
if (newX == OldX && OldY == y)
{
// do nothing
}
else
{
vw->SetViewAxisArray(newView);
OldX = newX;
OldY = y;
rwi->Render();
}
}
}