コード例 #1
0
        private static bool InTriangle(EarPoint pointToCheck, EarPoint earTip, EarPoint earTipPlusOne, EarPoint earTipMinusOne)
        {
            bool isIntriangle = GeoTriangleUtils.IsPointInTriangle2(earTip.mPoint, earTipPlusOne.mPoint, earTipMinusOne.mPoint, ref pointToCheck.mPoint);

            if (isIntriangle)
            {
                if (pointToCheck.mPoint == earTip.mPoint || pointToCheck.mPoint == earTipPlusOne.mPoint || pointToCheck.mPoint == earTipMinusOne.mPoint) // 端点
                {
                    return(false);
                }
            }
            return(isIntriangle);
        }
コード例 #2
0
ファイル: GeoTriangleUtils.cs プロジェクト: ByteKay/Nullspace
        public static float PointClosest2Triangle3(Vector3 p1, Vector3 p2, Vector3 p3, ref Vector3 p, ref Vector3 close)
        {
            GeoPlane plane = new GeoPlane(p1, p2, p3);
            float    d     = GeoPlaneUtils.PointClosestToPlaneAbs(plane.mNormal, plane.mD, p, ref close);

            if (GeoTriangleUtils.IsPointInTriangle3(p1, p2, p3, ref close))
            {
                return(d);
            }
            else
            {
                Vector3 close1 = new Vector3();
                float   dt     = PointClosest2PlaneTriangle2(p1, p2, p3, plane, ref p, ref close1);
                return((float)Math.Sqrt(d * d + dt * dt));
            }
        }
コード例 #3
0
        public static bool IsSegmentInsectOrOverlapTriangle2(Vector2 seg1, Vector2 seg2, Vector2 p1, Vector2 p2, Vector2 p3, ref GeoInsectPointArrayInfo insect)
        {
            // 在三角形内部
            if (GeoTriangleUtils.IsPointInTriangle2(p1, p2, p3, ref seg1) && GeoTriangleUtils.IsPointInTriangle2(p1, p2, p3, ref seg2))
            {
                insect.mIsIntersect = true;
                insect.mHitGlobalPoint.mPointArray.Add(new Vector3(seg1.x, seg1.y, 0.0f));
                insect.mHitGlobalPoint.mPointArray.Add(new Vector3(seg2.x, seg2.y, 0.0f));
                return(true);
            }
            // 相交测试(不包含 边的重叠)
            bool isInsect = GeoSegmentUtils.IsSegmentInsectTriangle2(seg1, seg2, p1, p2, p3, ref insect);

            if (!isInsect)
            {
                // 边重叠 测试
                isInsect = GeoSegmentUtils.IsSegmentOverlapTriangle2(seg1, seg2, p1, p2, p3, ref insect);
            }
            return(insect.mIsIntersect);
        }