//Good Game
private void CalcNearestPoint(out VInt3 cp, ref VInt3 start, ref VInt3 end, ref VInt3 p)
{
VInt2 b = new VInt2(end.x - start.x, end.z - start.z);
long sqrMagnitudeLong = b.sqrMagnitudeLong;
VInt2 a = new VInt2(p.x - start.x, p.z - start.z);
cp = new VInt3();
cp.y = p.y;
long num4 = VInt2.DotLong(ref a, ref b);
if (sqrMagnitudeLong != 0)
{
long num5 = (end.x - start.x) * num4;
long num6 = (end.z - start.z) * num4;
cp.x = (int)IntMath.Divide(num5, sqrMagnitudeLong);
cp.z = (int)IntMath.Divide(num6, sqrMagnitudeLong);
cp.x += start.x;
cp.z += start.z;
}
else
{
int num7 = (int)num4;
cp.x = start.x + ((end.x - start.x) * num7);
cp.z = start.z + ((end.z - start.z) * num7);
}
}
private void CalcNearestPoint(out VInt3 cp, ref VInt3 start, ref VInt3 end, ref VInt3 p)
{
VInt2 vInt = new VInt2(end.x - start.x, end.z - start.z);
long sqrMagnitudeLong = vInt.sqrMagnitudeLong;
VInt2 vInt2 = new VInt2(p.x - start.x, p.z - start.z);
cp = default(VInt3);
cp.y = p.y;
long num = VInt2.DotLong(ref vInt2, ref vInt);
if (sqrMagnitudeLong != 0L)
{
long a = (long)(end.x - start.x) * num;
long a2 = (long)(end.z - start.z) * num;
cp.x = (int)IntMath.Divide(a, sqrMagnitudeLong);
cp.z = (int)IntMath.Divide(a2, sqrMagnitudeLong);
cp.x += start.x;
cp.z += start.z;
}
else
{
int num2 = (int)num;
cp.x = start.x + (end.x - start.x) * num2;
cp.z = start.z + (end.z - start.z) * num2;
}
}
public static float NearestPointFactor(VInt2 lineStart, VInt2 lineEnd, VInt2 point)
{
VInt2 b = lineEnd - lineStart;
double sqrMagnitudeLong = b.sqrMagnitudeLong;
double num3 = VInt2.DotLong(point - lineStart, b);
if (sqrMagnitudeLong != 0.0)
{
num3 /= sqrMagnitudeLong;
}
return((float)num3);
}
public static float NearestPointFactor(VInt2 lineStart, VInt2 lineEnd, VInt2 point)
{
VInt2 b = lineEnd - lineStart;
double num = (double)b.sqrMagnitudeLong;
double num2 = (double)VInt2.DotLong(point - lineStart, b);
if (num != 0.0)
{
num2 /= num;
}
return((float)num2);
}
public static VFactor NearestPointFactorXZ(ref VInt3 lineStart, ref VInt3 lineEnd, ref VInt3 point)
{
VInt2 b = new VInt2(lineEnd.x - lineStart.x, lineEnd.z - lineStart.z);
VInt2 a = new VInt2(point.x - lineStart.x, point.z - lineStart.z);
long sqrMagnitudeLong = b.sqrMagnitudeLong;
VFactor zero = VFactor.zero;
zero.nom = VInt2.DotLong(a, b);
if (sqrMagnitudeLong != 0)
{
zero.den = sqrMagnitudeLong;
}
return(zero);
}
/** Factor of the nearest point on the segment.
* Returned value is in the range [0,1] if the point lies on the segment otherwise it just lies on the line.
* The closest point can be calculated using (end-start)*factor + start;
*/
public static long ClosestPointOnLineFactor(VInt2 lineStart, VInt2 lineEnd, VInt2 point)
{
var lineDirection = lineEnd - lineStart;
long magn = lineDirection.sqrMagnitudeLong;
long closestPoint = VInt2.DotLong(point - lineStart, lineDirection);
if (magn != 0)
{
closestPoint /= magn;
}
return(closestPoint);
}
public static VInt2 ClosestPointOnSegment(VInt2 lineStart, VInt2 lineEnd, VInt2 point)
{
var dir = lineEnd - lineStart;
long sqrMagn = dir.sqrMagnitudeLong;
if (sqrMagn <= 1)
{
return(lineStart);
}
long factor = VInt2.DotLong(point - lineStart, dir) / sqrMagn;
return(lineStart + dir * (int)IntMath.Clamp(0, 1000, factor));
}