Nyall Dawson 9b07075fae Add a switch to QgsTessellator to avoid z handling and fallback to a
purely 2d tesselation

Optimises tessellation when only a 2d tessellation is required by
skipping unnecessary/unwanted calculations
2019-10-02 21:37:52 +10:00
..
2019-09-26 09:05:22 +10:00