| private static InCircleDecimal ( System.Point pa, System.Point pb, System.Point pc, System.Point pd ) : decimal | ||
| pa | System.Point | |
| pb | System.Point | |
| pc | System.Point | |
| pd | System.Point | |
| return | decimal | |
private static decimal InCircleDecimal(Point pa, Point pb, Point pc, Point pd)
{
Statistic.InCircleCountDecimal++;
decimal adx, bdx, cdx, ady, bdy, cdy;
decimal bdxcdy, cdxbdy, cdxady, adxcdy, adxbdy, bdxady;
decimal alift, blift, clift;
adx = (decimal)pa.x - (decimal)pd.x;
bdx = (decimal)pb.x - (decimal)pd.x;
cdx = (decimal)pc.x - (decimal)pd.x;
ady = (decimal)pa.y - (decimal)pd.y;
bdy = (decimal)pb.y - (decimal)pd.y;
cdy = (decimal)pc.y - (decimal)pd.y;
bdxcdy = bdx * cdy;
cdxbdy = cdx * bdy;
alift = adx * adx + ady * ady;
cdxady = cdx * ady;
adxcdy = adx * cdy;
blift = bdx * bdx + bdy * bdy;
adxbdy = adx * bdy;
bdxady = bdx * ady;
clift = cdx * cdx + cdy * cdy;
return alift * (bdxcdy - cdxbdy)
+ blift * (cdxady - adxcdy)
+ clift * (adxbdy - bdxady);
}
public static double InCircle(Point pa, Point pb, Point pc, Point pd)
{
Statistic.InCircleCount = Statistic.InCircleCount + (long)1;
double num = pa.x - pd.x;
double num1 = pb.x - pd.x;
double num2 = pc.x - pd.x;
double num3 = pa.y - pd.y;
double num4 = pb.y - pd.y;
double num5 = pc.y - pd.y;
double num6 = num1 * num5;
double num7 = num2 * num4;
double num8 = num * num + num3 * num3;
double num9 = num2 * num3;
double num10 = num * num5;
double num11 = num1 * num1 + num4 * num4;
double num12 = num * num4;
double num13 = num1 * num3;
double num14 = num2 * num2 + num5 * num5;
double num15 = num8 * (num6 - num7) + num11 * (num9 - num10) + num14 * (num12 - num13);
if (Behavior.NoExact)
{
return(num15);
}
double num16 = (Math.Abs(num6) + Math.Abs(num7)) * num8 + (Math.Abs(num9) + Math.Abs(num10)) * num11 + (Math.Abs(num12) + Math.Abs(num13)) * num14;
double num17 = Primitives.iccerrboundA * num16;
if (num15 > num17 || -num15 > num17)
{
return(num15);
}
return((double)((double)Primitives.InCircleDecimal(pa, pb, pc, pd)));
}