SbBool
SoXipPolygon::isConsistent() const
{
// check if the contour size is greater than the minimum size.
const SbVec3f* pointPtr = point.getValues(0);
SbBox3f bbox;
for( int i = 0; i < point.getNum(); ++ i )
bbox.extendBy( pointPtr[i] );
SbVec3f bbSize;
bbox.getSize(bbSize[0], bbSize[1], bbSize[2]);
float screenScale = mViewVolume.getHeight() / mViewport.getViewportSizePixels()[1];
float bbLengthPix = bbSize.length() / screenScale;
return ( bbLengthPix >= (2 * CLOSING_MIN_PIXEL_DISTANCE) );
}
void
SoSurroundScale::updateMySurroundParams(SoAction *action,
const SbMatrix &myInv )
//
////////////////////////////////////////////////////////////////////////
{
const SoFullPath *curPath = (const SoFullPath *) action->getCurPath();
int curPathLength = curPath->getLength();
// If the container node is out of range, just return.
int numUpCon = (int) numNodesUpToContainer.getValue();
if ( (numUpCon <= 0) || (numUpCon > (curPathLength - 1)) ){
cachedScale.setValue(1,1,1);
cachedInvScale.setValue(1,1,1);
cachedTranslation.setValue(0,0,0);
cacheOK = FALSE;
return;
}
// CHECK TO SEE IF OUR CACHED VALUES ARE OKAY
// IF SO, JUST RETURN
if ( cacheOK )
return;
// Find the path to apply the bounding box action to. It should end
// 'numUpCon' above this one.
SoPath *applyPath = curPath->copy(0, (curPathLength - numUpCon));
applyPath->ref();
// See if there is a node to do a reset at. If so, build a resetPath
SoPath *resetPath = NULL;
int numUpReset = (int) numNodesUpToReset.getValue();
if (numUpReset >= 0 && (numUpReset < numUpCon) ) {
// Build a path ending at the reset node.
resetPath = curPath->copy(0, curPathLength - numUpReset );
resetPath->ref();
}
SoFullPath *fullResetPath = (SoFullPath *) resetPath;
// Create a getBoundingBox action
// Set the reset path if we have one.
// Apply the bounding box action and find out how big the box was.
// Temporarily set the ignoreInBbox flag TRUE, so we don't infinite loop!
SbViewportRegion vpRegion(0,0);
SoState *state = action->getState();
vpRegion = SoViewportRegionElement::get(state);
static SoGetBoundingBoxAction *boundingBoxAction = NULL;
if (boundingBoxAction == NULL)
boundingBoxAction = new SoGetBoundingBoxAction(vpRegion);
else
boundingBoxAction->setViewportRegion(vpRegion);
if (fullResetPath)
boundingBoxAction->setResetPath( fullResetPath, FALSE,
SoGetBoundingBoxAction::BBOX);
SbBool oldFlag = isIgnoreInBbox();
setIgnoreInBbox( TRUE );
boundingBoxAction->apply( applyPath );
setIgnoreInBbox( oldFlag );
SbXfBox3f &myXfBox = boundingBoxAction->getXfBoundingBox();
// Transform the box into our local space, then project it.
myXfBox.transform( myInv );
SbBox3f myBox = myXfBox.project();
// Get the scale for this node to add to the ctm.
if (myBox.isEmpty()) {
cachedScale.setValue(1,1,1);
cachedInvScale.setValue(1,1,1);
cachedTranslation.setValue(0,0,0);
cacheOK = TRUE;
return;
}
else {
float x, y, z;
myBox.getSize(x,y,z);
cachedScale.setValue( .5*x, .5*y, .5*z );
float minLength = .01 * cachedScale.length();
// Macro defined just before beginning of this method.
FUDGE(cachedScale[0],minLength);
FUDGE(cachedScale[1],minLength);
FUDGE(cachedScale[2],minLength);
// Find the inverse values
for (int j = 0; j < 3; j++ )
cachedInvScale[j] = 1.0 / cachedScale[j];
}
// Get the translation for this node to add to the ctm.
// This will get the cube centered about the bbox center.
// If the bounding box is not centered at the origin, we have to
// move the cube to the correct place.
if (doTranslations)
cachedTranslation = 0.5 * ( myBox.getMin() + myBox.getMax() );
else
cachedTranslation.setValue(0,0,0);
// Establish the cached values to save us some time later...
cacheOK = TRUE;
if (resetPath)
resetPath->unref();
if (applyPath)
applyPath->unref();
}
