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Change 2d transform snapping from floor to round

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Two common problems have emerged as a result of transform snapping:
1) Camera jitter with a camera following a snapped object
2) Pixel gaps between e.g. a platform and a player, where a platform rounds down and a player rounds up

Using round seems to greatly reduce problems due to camera jitter. It also may prove better for  pixel gaps because pixel art is often designed on a grid, so whole numbers are too expected, which are unstable with floor().
This commit is contained in:
lawnjelly
2021-02-28 10:30:15 +00:00
parent 8385a0d8ad
commit 847a37b196
4 changed files with 12 additions and 5 deletions
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2
servers/visual/visual_server_canvas.cpp
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@@ -100,7 +100,7 @@ void VisualServerCanvas::_render_canvas_item(Item *p_canvas_item, const Transfor
Rect2 rect = ci->get_rect();
Transform2D xform = ci->xform;
if (snap_2d_transforms) {
xform.elements[2] = xform.elements[2].floor();
xform.elements[2] = xform.elements[2].round();
}
xform = p_transform * xform;