+
+ if(me.forcedAspect <= -2)
+ {
+ me.imgSize_x = sz_x / me.size_x;
+ me.imgSize_y = sz_y / me.size_y;
+ if(me.zoomBox < 0 && (me.imgSize_x > 1 || me.imgSize_y > 1))
+ {
+ // image larger than the containing box, zoom it out to fit into the box
+ if(me.size_x > asp * me.size_y)
+ me.zoomBox = (me.size_y * asp / me.size_x) / me.imgSize_x;
+ else
+ me.zoomBox = (me.size_x / (asp * me.size_y)) / me.imgSize_y;
+ me.zoomFactor = me.zoomBox;
+ }
+ }
+ else
+ {
+ if(me.size_x > asp * me.size_y)
+ {
+ // x too large, so center x-wise
+ me.imgSize = eY + eX * (me.size_y * asp / me.size_x);
+ }
+ else
+ {
+ // y too large, so center y-wise
+ me.imgSize = eX + eY * (me.size_x / (asp * me.size_y));
+ }
+ }
+ }
+
+ if (me.zoomMax < 0)
+ {
+ if(me.zoomBox > 0)
+ me.zoomMax = me.zoomBox;
+ else
+ {
+ if(me.size_x > asp * me.size_y)
+ me.zoomMax = (me.size_y * asp / me.size_x) / me.imgSize_x;
+ else
+ me.zoomMax = (me.size_x / (asp * me.size_y)) / me.imgSize_y;
+ }
+ }
+
+ if (me.zoomMax > 0 && me.zoomFactor > me.zoomMax)
+ me.zoomFactor = me.zoomMax;
+ if (me.zoomFactor)
+ me.imgSize = me.imgSize * me.zoomFactor;
+
+ if(me.imgSize_x > 1 || me.imgSize_y > 1)
+ {
+ if(me.zoomSnapToTheBox)
+ {
+ if(me.imgSize_x > 1)
+ me.zoomOffset_x = bound(0.5/me.imgSize_x, me.zoomOffset_x, 1 - 0.5/me.imgSize_x);
+ else
+ me.zoomOffset_x = bound(1 - 0.5/me.imgSize_x, me.zoomOffset_x, 0.5/me.imgSize_x);
+
+ if(me.imgSize_y > 1)
+ me.zoomOffset_y = bound(0.5/me.imgSize_y, me.zoomOffset_y, 1 - 0.5/me.imgSize_y);
+ else
+ me.zoomOffset_y = bound(1 - 0.5/me.imgSize_y, me.zoomOffset_y, 0.5/me.imgSize_y);
+ }
+ else
+ {
+ me.zoomOffset_x = bound(0, me.zoomOffset_x, 1);
+ me.zoomOffset_y = bound(0, me.zoomOffset_y, 1);
+ }
+ }
+ else
+ me.zoomOffset = '0.5 0.5 0';
+
+ me.imgOrigin_x = 0.5 - me.zoomOffset_x * me.imgSize_x;
+ me.imgOrigin_y = 0.5 - me.zoomOffset_y * me.imgSize_y;
+}
+float Image_drag_setStartPos(entity me, vector coords)
+{
+ //if(me.imgSize_x > 1 || me.imgSize_y > 1) // check disabled: mousewheel zoom may start from a non-zoomed-in image
+ {
+ me.start_zoomOffset = me.zoomOffset;
+ me.start_coords = coords;
+ }
+ return 1;
+}
+float Image_drag(entity me, vector coords)
+{
+ if(me.imgSize_x > 1 || me.imgSize_y > 1)
+ {
+ me.zoomOffset_x = me.start_zoomOffset_x + (me.start_coords_x - coords_x) / me.imgSize_x;
+ me.zoomOffset_y = me.start_zoomOffset_y + (me.start_coords_y - coords_y) / me.imgSize_y;
+ me.updateAspect(me);
+ }
+ return 1;
+}
+void Image_setZoom(entity me, float z, float atMousePosition)
+{
+ float prev_zoomFactor;
+ prev_zoomFactor = me.zoomFactor;
+ if (z < 0) // multiply by the current zoomFactor (but can also snap to real dimensions or to box)
+ {
+ me.zoomFactor *= -z;
+ float realSize_in_the_middle, boxSize_in_the_middle;
+ realSize_in_the_middle = ((prev_zoomFactor - 1) * (me.zoomFactor - 1) < 0);
+ boxSize_in_the_middle = (me.zoomBox > 0 && (prev_zoomFactor - me.zoomBox) * (me.zoomFactor - me.zoomBox) < 0);
+ if (realSize_in_the_middle && boxSize_in_the_middle)