Allow drag & dop of the mid-photo mark

[Wikinaut]

On my touch screen, I cannot select and move the "M" point. Also, the (first) selection of the other points is somehow difficult if they lie close to the image borders.

Perhaps the diameter of the handles (the circles) can be simply increased substantially?

[hollma]

Point M is fixed because it marks the camera's position. If you were to move the camera, the content of the entire photo moved as well.

The size of the handles seems to depend on the screen resolution. For low resolutions the handles are quite large.

TODO: Adaptive handle size (based on the resolution of the screen).

[martin-ueding]

I have the problem that my camera is neither mounted in an exact level way, not in the middle of the bike. So I would have to rotate the horizon (could do that beforehand) and would have to crop the picture (could also do that beforehand). I guess this is a calibration issue on my side, which I should take care of with an ImageMagick script first?

[hollma]

Not being mounted in the middle of the handlebar is not a problem at all. Just keep in mind to subtract the distance between the left-hand end of the handlebar and the camera.

The software does not rotate the picture, but thanks for the idea. Fixing the point M and rotating the rest of the picture should work, but I need to check the jsxgraph library.