diff options
Diffstat (limited to '')
| -rw-r--r-- | source/BoundingBox.cpp | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/source/BoundingBox.cpp b/source/BoundingBox.cpp index e2b8c313e..d8a1bc679 100644 --- a/source/BoundingBox.cpp +++ b/source/BoundingBox.cpp @@ -239,42 +239,50 @@ bool cBoundingBox::CalcLineIntersection(const Vector3d & a_Line1, const Vector3d bool cBoundingBox::CalcLineIntersection(const Vector3d & a_Min, const Vector3d & a_Max, const Vector3d & a_Line1, const Vector3d & a_Line2, double & a_LineCoeff, char & a_Face) { + if (IsInside(a_Min, a_Max, a_Line1)) + { + // The starting point is inside the bounding box. + a_LineCoeff = 0; + a_Face = BLOCK_FACE_YM; // Make it look as the top face was hit, although none really are. + return true; + } + char Face = 0; double Coeff = Vector3d::NO_INTERSECTION; // Check each individual bbox face for intersection with the line, remember the one with the lowest coeff double c = a_Line1.LineCoeffToXYPlane(a_Line2, a_Min.z); - if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) + if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) { Face = (a_Line1.z > a_Line2.z) ? BLOCK_FACE_ZP : BLOCK_FACE_ZM; Coeff = c; } c = a_Line1.LineCoeffToXYPlane(a_Line2, a_Max.z); - if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) + if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) { Face = (a_Line1.z > a_Line2.z) ? BLOCK_FACE_ZP : BLOCK_FACE_ZM; Coeff = c; } c = a_Line1.LineCoeffToXZPlane(a_Line2, a_Min.y); - if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) + if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) { Face = (a_Line1.y > a_Line2.y) ? BLOCK_FACE_YP : BLOCK_FACE_YM; Coeff = c; } c = a_Line1.LineCoeffToXZPlane(a_Line2, a_Max.y); - if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) + if ((c >= 0) && (c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) { Face = (a_Line1.y > a_Line2.y) ? BLOCK_FACE_YP : BLOCK_FACE_YM; Coeff = c; } c = a_Line1.LineCoeffToYZPlane(a_Line2, a_Min.x); - if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) + if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) { Face = (a_Line1.x > a_Line2.x) ? BLOCK_FACE_XP : BLOCK_FACE_XM; Coeff = c; } c = a_Line1.LineCoeffToYZPlane(a_Line2, a_Max.x); - if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) + if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c)) { Face = (a_Line1.x > a_Line2.x) ? BLOCK_FACE_XP : BLOCK_FACE_XM; Coeff = c; |