Implicitly increase size to compensate for moving an entity below the y=0 line

This was, previously, explicitly handled with a factor of (1 / (1 - x)).
I just regex'd away these factors, so there are probably a few errors.

macrovision.js

@@ -110,7 +110,9 @@ function updateEntityElement(entity, element, zIndex) {
     element.style.left = position.x + "px";
     element.style.top = position.y + "px";
     const pixels = math.divide(entity.views[view].height, config.height) * (canvasHeight - 50);
-    const bonus = (entity.views[view].image.extra ? entity.views[view].image.extra : 1);
+    const extra = entity.views[view].image.extra;
+    const bottom = entity.views[view].image.bottom;
+    const bonus = (extra ? extra : 1) * (1 / (1 - (bottom ? bottom : 0)));
     element.style.setProperty("--height", pixels * bonus + "px");
     element.style.setProperty("--extra", pixels * bonus - pixels + "px");
 
@@ -1382,10 +1384,8 @@ function fitWorld(manual=false, factor=1.1) {
 
         let extra = entity.views[view].image.extra;
         extra = extra === undefined ? 1 : extra;
-        let bottom = entity.views[view].image.bottom;
-        bottom = bottom === undefined ? 0 : bottom;
 
-        max = fitMode.binop(max, math.multiply(extra * (1 - bottom), entity.views[view].height.toNumber("meter")));
+        max = fitMode.binop(max, math.multiply(extra, entity.views[view].height.toNumber("meter")));
         count += 1;
     });