OMV.Vector3 ComputeAvatarScale(OMV.Vector3 size)
{
OMV.Vector3 newScale;
// Bullet's capsule total height is the "passed height + radius * 2";
// The base capsule is 1 diameter and 2 height (passed radius=0.5, passed height = 1)
// The number we pass in for 'scaling' is the multiplier to get that base
// shape to be the size desired.
// So, when creating the scale for the avatar height, we take the passed height
// (size.Z) and remove the caps.
// Another oddity of the Bullet capsule implementation is that it presumes the Y
// dimension is the radius of the capsule. Even though some of the code allows
// for a asymmetrical capsule, other parts of the code presume it is cylindrical.
// Scale is multiplier of radius with one of "0.5"
float heightAdjust = BSParam.AvatarHeightMidFudge;
if (BSParam.AvatarHeightLowFudge != 0f || BSParam.AvatarHeightHighFudge != 0f) {
const float AVATAR_LOW = 1.1f;
const float AVATAR_MID = 1.775f; // 1.87f
const float AVATAR_HI = 2.45f;
// An avatar is between 1.1 and 2.45 meters. Midpoint is 1.775m.
float midHeightOffset = size.Z - AVATAR_MID;
if (midHeightOffset < 0f) {
// Small avatar. Add the adjustment based on the distance from midheight
heightAdjust += ((-1f * midHeightOffset) / (AVATAR_MID - AVATAR_LOW)) * BSParam.AvatarHeightLowFudge;
} else {
// Large avatar. Add the adjustment based on the distance from midheight
heightAdjust += ((midHeightOffset) / (AVATAR_HI - AVATAR_MID)) * BSParam.AvatarHeightHighFudge;
}
}
newScale.X = size.X / 2f;
newScale.Y = size.Y / 2f;
// The total scale height is the central cylindar plus the caps on the two ends.
//newScale.Z = (size.Z + (Math.Min(size.X, size.Y) * 2)) / 2f;
newScale.Z = (size.Z + (Math.Min(size.X, size.Y) * 2) + heightAdjust) / 2f;
// If smaller than the endcaps, just fake like we're almost that small
if (newScale.Z < 0)
newScale.Z = 0.1f;
return newScale;
}
