public override int Prepare(ref TSBBox box)
{
bool flag = box.min.x < this.boundings.min.x;
if (flag)
{
this.minX = 0;
}
else
{
this.minX = (int)((long)FP.Floor((box.min.x - this.sphericalExpansion) / this.scaleX));
this.minX = (int)((long)TSMath.Max(this.minX, 0));
}
bool flag2 = box.max.x > this.boundings.max.x;
if (flag2)
{
this.maxX = this.heightsLength0 - 1;
}
else
{
this.maxX = (int)((long)FP.Ceiling((box.max.x + this.sphericalExpansion) / this.scaleX));
this.maxX = (int)((long)TSMath.Min(this.maxX, this.heightsLength0 - 1));
}
bool flag3 = box.min.z < this.boundings.min.z;
if (flag3)
{
this.minZ = 0;
}
else
{
this.minZ = (int)((long)FP.Floor((box.min.z - this.sphericalExpansion) / this.scaleZ));
this.minZ = (int)((long)TSMath.Max(this.minZ, 0));
}
bool flag4 = box.max.z > this.boundings.max.z;
if (flag4)
{
this.maxZ = this.heightsLength1 - 1;
}
else
{
this.maxZ = (int)((long)FP.Ceiling((box.max.z + this.sphericalExpansion) / this.scaleZ));
this.maxZ = (int)((long)TSMath.Min(this.maxZ, this.heightsLength1 - 1));
}
this.numX = this.maxX - this.minX;
this.numZ = this.maxZ - this.minZ;
return(this.numX * this.numZ * 2);
}
public static FP Ceil(FP i_Value)
{
return(FP.Ceiling(i_Value));
}
public static FP Ceiling(FP value)
{
return(FP.Ceiling(value));
}