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+ workaround for cropped images with Coin4

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This commit is contained in:
wmayer 2014-11-06 16:49:50 +01:00
parent ba97d17b2a
commit 4a28b93521
1 changed files with 30 additions and 10 deletions
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40
src/Gui/View3DInventorViewer.cpp
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@ -38,6 +38,7 @@
# include <Inventor/actions/SoHandleEventAction.h>
# include <Inventor/actions/SoToVRML2Action.h>
# include <Inventor/actions/SoWriteAction.h>
# include <Inventor/elements/SoViewportRegionElement.h>
# include <Inventor/manips/SoClipPlaneManip.h>
# include <Inventor/nodes/SoBaseColor.h>
# include <Inventor/nodes/SoCallback.h>
@ -631,9 +632,20 @@ void View3DInventorViewer::updateOverrideMode(const std::string& mode)
overrideMode = mode;
}
void setViewportRegionCB(void* userdata, SoAction* action)
{
// Make sure to override the value set inside SoOffscreenRenderer::render()
if (action->isOfType(SoGLRenderAction::getClassTypeId())) {
SoFCOffscreenRenderer& renderer = SoFCOffscreenRenderer::instance();
const SbViewportRegion& vp = renderer.getViewportRegion();
SoViewportRegionElement::set(action->getState(), vp);
static_cast<SoGLRenderAction*>(action)->setViewportRegion(vp);
}
}
void View3DInventorViewer::clearBuffer(void* userdata, SoAction* action)
{
if(action->isOfType(SoGLRenderAction::getClassTypeId())) {
if (action->isOfType(SoGLRenderAction::getClassTypeId())) {
// do stuff specific for GL rendering here.
glClear(GL_DEPTH_BUFFER_BIT);
}
@ -644,7 +656,7 @@ void View3DInventorViewer::setGLWidget(void* userdata, SoAction* action)
//FIXME: This causes the Coin error message:
// Coin error in SoNode::GLRenderS(): GL error: 'GL_STACK_UNDERFLOW', nodetype:
// Separator (set envvar COIN_GLERROR_DEBUGGING=1 and re-run to get more information)
if(action->isOfType(SoGLRenderAction::getClassTypeId())) {
if (action->isOfType(SoGLRenderAction::getClassTypeId())) {
QWidget* gl = reinterpret_cast<QWidget*>(userdata);
SoGLWidgetElement::set(action->getState(), qobject_cast<QGLWidget*>(gl));
}
@ -790,7 +802,7 @@ void View3DInventorViewer::savePicture(int w, int h, int eBackgroundType, QImage
bool useBackground = false;
SbViewportRegion vp(getSoRenderManager()->getViewportRegion());
if(w>0 && h>0)
if (w>0 && h>0)
vp.setWindowSize((short)w, (short)h);
//NOTE: To support pixels per inch we must use SbViewportRegion::setPixelsPerInch( ppi );
@ -802,9 +814,9 @@ void View3DInventorViewer::savePicture(int w, int h, int eBackgroundType, QImage
SoCallback* cb = 0;
// if we use transparency then we must not set a background color
switch(eBackgroundType) {
switch (eBackgroundType) {
case Current:
if(backgroundroot->findChild(pcBackGround) == -1) {
if (backgroundroot->findChild(pcBackGround) == -1) {
const QColor col = this->backgroundColor();
renderer.setBackgroundColor(SbColor(col.redF(), col.greenF(), col.blueF()));
}
@ -813,7 +825,6 @@ void View3DInventorViewer::savePicture(int w, int h, int eBackgroundType, QImage
cb = new SoCallback;
cb->setCallback(clearBuffer);
}
break;
case White:
@ -837,11 +848,20 @@ void View3DInventorViewer::savePicture(int w, int h, int eBackgroundType, QImage
SoCamera* camera = getSoRenderManager()->getCamera();
if(useBackground) {
if (useBackground) {
root->addChild(backgroundroot);
root->addChild(cb);
}
#if (COIN_MAJOR_VERSION >= 4)
// The behaviour in Coin4 has changed so that when using the same instance of 'SoFCOffscreenRenderer'
// multiple times internally the biggest viewport size is stored and set to the SoGLRenderAction.
// The trick is to add a callback node and override the viewport size with wath we want.
SoCallback* cbvp = new SoCallback;
cbvp->setCallback(setViewportRegionCB);
root->addChild(cbvp);
#endif
root->addChild(getHeadlight());
root->addChild(camera);
SoCallback* gl = new SoCallback;
@ -849,20 +869,20 @@ void View3DInventorViewer::savePicture(int w, int h, int eBackgroundType, QImage
root->addChild(gl);
root->addChild(pcViewProviderRoot);
if(useBackground)
if (useBackground)
root->addChild(cb);
root->addChild(foregroundroot);
try {
// render the scene
if(!renderer.render(root))
if (!renderer.render(root))
throw Base::Exception("Offscreen rendering failed");
renderer.writeToImage(img);
root->unref();
}
catch(...) {
catch (...) {
root->unref();
throw; // re-throw exception
}