709903c6bb
This is apart of a code cleanup to make ED_view3d_project_short/ED_view3d_project_int/ED_view3d_project_float interchangeable. Currently they work very differently in a way thats quite confusing (and cause of bugs in blender that remain uncorrected) - fixes coming. There are also cases where ED_view3d_project_short is used, then the values are converted from shorts into int's after because ED_view3d_project_int() behaves differently, will unify behavior of these functions after this commit. - rather then clip/noclip versions, pass flags (for bound-box clip, window clip). - rather then store the invalid clip-value, return success (or error value clip_near, clip_bb, clip_win, overflow). - remove local copies of project functions from drawobject.c: view3d_project_short_clip, view3d_project_short_noclip, view3d_project_short_clip_persmat. add functions: - ED_view3d_project_short_global() global space projection - ED_view3d_project_short_object() object space projection. - ED_view3d_project_short_ex() take perspective matrix and local space option as args. - ED_view3d_project_base() - special function to set the Object 'Base' screen coords (sx, sy), since this is a common enough operation.