Some primitives are drawn with an incorrect offset

[zommerfelds]

When you setup a scene with high scale (where a difference of 0.1 is visible), some primitives have a small value added that distorts the position. Examples:

heaps/h2d/SpriteBatch.hx

Line 403 in 2215e97

tmp[pos++] = sx + t.width + 0.1;

heaps/h2d/Graphics.hx

Lines 563 to 564 in 8f7f439

	var e = 0.01; // see #776
	tmpPoints[0].x += e;

I think a scale like that is very reasonable, given some people recommend 1 unit = 1 m (depending on your world). However, the code was probably written assuming 1 unit = 1 pixel.

Maybe this is a duplicate of #776 but I wanted to know if anybody knows the reason why we add 0.1. I can create a PR to remove those, but they were probably added for a reason :)

[ncannasse]

I don't like hardcoded offsets as well :'( But there is definitely some reason for this, although I haven't played with 2D recently. Let's discuss first this in #776 for h2d.Graphics and see if it can be resolved for the sample I posted there, and then we can apply the same reasoning to SpriteBatch

[zommerfelds]

For the SpriteBatch case: do you have an example to reproduce a problem? Since there are no lines there it feels like a different problem.