[osg-users] osgText inconsistant size

[Romain Ouabdelkader]

Hi,

I have discovered an issue with osgText: under certain conditions,
Text::getBoundingBox() returns different values with the same text, font,
font resolution, etc.

You can reproduce the issue with this example:

int main() {
  const char *font_path = "museo500.ttf";

  osg::ref_ptr<osgText::Text> text0 = new osgText::Text;
  text0->setFont(font_path);
  text0->setFontResolution(128, 128);
  text0->setText("V");
  text0->setText("a");

  osg::ref_ptr<osgText::Text> text1 = new osgText::Text;
  text1->setFont(font_path);
  text1->setText("p");

  text0->setText("Va");
  float first_call = text0->getBoundingBox().xMax();

  text0->setText("c");

  text0->setText("Va");
  float second_call = text0->getBoundingBox().xMax();

  std::cout << first_call << std::endl;
  std::cout << second_call << std::endl;
  if (first_call != second_call) {
    std::cout << "Error!" << std::endl;
    return 1;
  }

  return 0;
}

Output:
36.4961
35.9961
Error!

The issue seems to be very specific, if I remove any of these lines the
issue doesn't appear.

I've attached the font if you want to reproduce it.

Regards,
Romain Ouabdelkader.
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