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Gui: determine the view size of the focal plane in perspective mode

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This commit is contained in:
wmayer
2022-11-10 13:34:59 +01:00
parent c726b69d7e
commit 45dc6d3a49
1 changed files with 27 additions and 19 deletions
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46
src/Gui/View3DInventorViewer.cpp
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@@ -2381,25 +2381,35 @@ void View3DInventorViewer::setSeekMode(SbBool on)
void View3DInventorViewer::printDimension()
{
SoCamera* cam = getSoRenderManager()->getCamera();
if (!cam) // no camera there
SoCamera* camera = getSoRenderManager()->getCamera();
if (!camera) // no camera there
return;
SoType t = getSoRenderManager()->getCamera()->getTypeId();
if (t.isDerivedFrom(SoOrthographicCamera::getClassTypeId())) {
const SbViewportRegion& vp = getSoRenderManager()->getViewportRegion();
const SbVec2s& size = vp.getWindowSize();
short dimX, dimY;
size.getValue(dimX, dimY);
float aspectRatio = getViewportRegion().getViewportAspectRatio();
float fHeight = -1.0;
float fWidth = -1.0;
float fHeight = static_cast<SoOrthographicCamera*>(getSoRenderManager()->getCamera())->height.getValue();
float fWidth = fHeight;
SoType type = camera->getTypeId();
if (type.isDerivedFrom(SoOrthographicCamera::getClassTypeId())) {
fHeight = static_cast<SoOrthographicCamera*>(camera)->height.getValue();
fWidth = fHeight;
}
else if (type.isDerivedFrom(SoPerspectiveCamera::getClassTypeId())) {
float fHeightAngle = static_cast<SoPerspectiveCamera*>(camera)->heightAngle.getValue();
fHeight = std::tan(fHeightAngle / 2.0) * 2.0 * camera->focalDistance.getValue();
fWidth = fHeight;
}
if (dimX > dimY)
fWidth *= ((float)dimX)/((float)dimY);
else if (dimX < dimY)
fHeight *= ((float)dimY)/((float)dimX);
if (aspectRatio > 1.0) {
fWidth *= aspectRatio;
}
else {
fHeight *= aspectRatio;
}
QString dim;
if (fWidth >= 0.0 && fHeight >= 0.0) {
// Translate screen units into user's unit schema
Base::Quantity qWidth(Base::Quantity::MilliMetre);
Base::Quantity qHeight(Base::Quantity::MilliMetre);
@@ -2409,12 +2419,10 @@ void View3DInventorViewer::printDimension()
QString hStr = Base::UnitsApi::schemaTranslate(qHeight);
// Create final string and update window
QString dim = QString::fromLatin1("%1 x %2")
.arg(wStr, hStr);
getMainWindow()->setPaneText(2, dim);
dim = QString::fromLatin1("%1 x %2").arg(wStr, hStr);
}
else
getMainWindow()->setPaneText(2, QLatin1String(""));
getMainWindow()->setPaneText(2, dim);
}
void View3DInventorViewer::selectAll()