Eve error message

jeremym · September 26, 2020, 11:16pm

@matevz

Hi,

What does this error message mean?

Error in <TGLBoundingBox::SetAligned>: low/high vertex range error

Would this happen if I added some elements to the scene with invalid parameters for display?

I get it periodically but I’m not sure of the cause and seems to depend on the type of events I’m loading.

matevz · September 28, 2020, 5:19pm

Hi,

This comes from here:

github.com

root-project/root/blob/master/graf3d/gl/src/TGLBoundingBox.cxx#L204


//   /  3-------2
//  /  /|      /|
// z  7-------6 |
//    | 0-----|-1
//    |/      |/
//    4-------5
//

TGLVector3 diff = highVertex - lowVertex;
if (diff.X() < 0.0 || diff.Y() < 0.0 || diff.Z() < 0.0) {
   Error("TGLBoundingBox::SetAligned", "low/high vertex range error");
}
fVertex[0] = lowVertex;
fVertex[1] = lowVertex;  fVertex[1].X() += diff.X();
fVertex[2] = lowVertex;  fVertex[2].X() += diff.X(); fVertex[2].Y() += diff.Y();
fVertex[3] = lowVertex;  fVertex[3].Y() += diff.Y();
fVertex[4] = highVertex; fVertex[4].X() -= diff.X(); fVertex[4].Y() -= diff.Y();
fVertex[5] = highVertex; fVertex[5].Y() -= diff.Y();
fVertex[6] = highVertex;
fVertex[7] = highVertex; fVertex[7].X() -= diff.X();
// Could change cached volume/axes

Can you please run in debugger and set a breakpoint? Then we’ll see where we really need to look

Cheers,
Matevz

jeremym · September 28, 2020, 5:55pm

Okay, I should set a breakpoint on this method then?

void TGLBoundingBox::SetAligned(const TGLVertex3 & lowVertex, const TGLVertex3 & highVertex)

matevz · September 28, 2020, 6:11pm

No, just set it on the Error call itself, line 204 in the master (probably this file hasn’t been changed in years).