Can't select interactive markers

[wolfv]

The PR of #1519 in release 1.13.13 brea makes RViz unable to select interactive marker arrows for me (cf. ros-visualization/interactive_markers#76)

replacing the size==3 case with:

      else { // otherwise perform "official" transformation into float-based Ogre::ColourValue and back
        uint32_t pos = (x + y * w) * 3;
        uint8_t* data = (uint8_t*)box.data + pos;
        uint32_t pix_val = 0;
        memcpy((uint8_t*)&pix_val, (uint8_t*)box.data + pos, 3);
        pixels.push_back(colorToHandle(box.format, pix_val));
      }

works fine.

The conversion to float is probably (too) lossy.

[rhaschke]

Please file a PR if this fixes your issue. Thanks for debugging.

[wolfv]

I did that: #1528

Thanks for the awesome RViz work!

[rhaschke]

Closed via #1528. Sorry, I didn't notice the PR in first place. Thanks for your fix.