• Simulation of fish-eye effect, that is, to achieve the visual effect of spherical protrusion.

  • The principle of

    1. Unrestricted distortion degree vector oc ‘is equal to the proportion of arc DC to the whole diameter and radian

    $$ r*asin(len(oc’)/r)/(pi*r)=fac/(2r) $$

    1. Limit distortion degree to be updated