Change getVolume to use visual clipping type

[Wakbub]

When merged this pull request will:

• Change getVolume to use visual instead of general clipping type for boundingBoxReal.

Arma 3's 1.92 update changed boundingBoxReal so that it can be passed a number for clipping type. Visual clipping type (0) gives more precise measurements when estimating the volume of an object compared to general clipping type (3).

Real bounding boxes with visual and general clipping types are shown below for certain objects (a vehicle, an ammo box, and a building) where the differences are profound. Some objects have almost identical real bounding boxes despite different clipping types (e.g., a Strider has less than 1% difference in volume). Real bounding boxes with visual clipping type are colored in white and those with general clipping type are colored in black.

Figure 1. Real bounding box of a vehicle (I_Truck_02_fuel_F). Visual clipping type: 105.406 m³. General clipping type: 280.191 m³. Difference: ≈62%.

Figure 2. Real bounding of an ammo box (Box_T_East_Ammo_F). Visual clipping type: 0.171219 m³. General clipping type: 1.37109 m³. Difference: ≈88%.

Figure 3. Real bounding box of a building (Land_cargo_house_slum_F). Visual clipping type: 69.1653 m³. General clipping type: 174.096 m³. Difference: ≈140%.

There exists two other clipping types: shadow (1) and geometry (2). For the tested objects there were no differences in volume between shadow, geometry, and general clipping types. Regarding performance, there was no noticeable difference between any of the four clipping types. It thus seems motivated to use visual.

[commy2]

This is cool. Do I understand correctly that the old unary command and the new binary command with left hand side argument 3 report the same result?

[dedmen]

Do I understand correctly that the old unary command and the new binary command with left hand side argument 3 report the same result?

Yes. We talked about implementing this command a year ago when I wrote it and sent it to BI and they didn't take it ^^

[commy2]

Thanks.