diff options
| -rw-r--r-- | src/editor/view2d.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/src/editor/view2d.cpp b/src/editor/view2d.cpp index 1445cfc..faff736 100644 --- a/src/editor/view2d.cpp +++ b/src/editor/view2d.cpp @@ -727,12 +727,26 @@ void gui_editor_2dview_input_scroll( GUI_EDITOR_2DVIEW* view ) { U8 scroll = gui_mbutton_down( GUI_MBTNSCROLL ); gui_capture_scroll(); + F32 zoom_factor = 1.f; if( scroll == (U8)-1 && view->scale > 0.5f ) { - view->scale *= 0.75f; + zoom_factor = 0.75f; } else if( scroll == 1 && view->scale < 16.f ) { - view->scale *= 1.25f; + zoom_factor = 1.25f; } + + if( zoom_factor == 1.f ) + return; + + I32 mx, my; + gui_cursor_pos( &mx, &my ); + VEC2 world_before = gui_editor_2dview_screen_to_world( view, mx, my ); + + view->scale *= zoom_factor; + + VEC2 world_after = gui_editor_2dview_screen_to_world( view, mx, my ); + view->posx += world_before.x - world_after.x; + view->posy += world_before.y - world_after.y; } void gui_editor_2dview_input_tool_wall( GUI_EDITOR_2DVIEW* view ) { |