diff options
author | Aki <please@ignore.pl> | 2024-03-12 22:07:03 +0100 |
---|---|---|
committer | Aki <please@ignore.pl> | 2024-03-12 22:07:36 +0100 |
commit | 81bb6873f1c0291fecbf6e429ad15ac3db66a4c0 (patch) | |
tree | fd7552ecabeeffb45a1fbe3730ab62bc7a64dd85 /contrib/Opcode/Ice/IceRay.cpp | |
parent | f43d32d6d2cc7ecd04f4f06f20d5a6fc2c87c9ae (diff) | |
download | starshatter-81bb6873f1c0291fecbf6e429ad15ac3db66a4c0.zip starshatter-81bb6873f1c0291fecbf6e429ad15ac3db66a4c0.tar.gz starshatter-81bb6873f1c0291fecbf6e429ad15ac3db66a4c0.tar.bz2 |
Legal notices updated
Rename contrib -> third-party intendes to express the origin and purpose
of that part of the code better. I plan to readd contrib/ again but with
more in-project things like bash-completions, dev workflow scripts etc.
Diffstat (limited to 'contrib/Opcode/Ice/IceRay.cpp')
-rw-r--r-- | contrib/Opcode/Ice/IceRay.cpp | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/contrib/Opcode/Ice/IceRay.cpp b/contrib/Opcode/Ice/IceRay.cpp deleted file mode 100644 index d7c617a..0000000 --- a/contrib/Opcode/Ice/IceRay.cpp +++ /dev/null @@ -1,84 +0,0 @@ -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -/** - * Contains code for rays. - * \file IceRay.cpp - * \author Pierre Terdiman - * \date April, 4, 2000 - */ -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// - -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -/** - * Ray class. - * A ray is a half-line P(t) = mOrig + mDir * t, with 0 <= t <= +infinity - * \class Ray - * \author Pierre Terdiman - * \version 1.0 - */ -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// - -/* - O = Origin = impact IcePoint - i = normalized vector along the x axis - j = normalized vector along the y axis = actually the normal vector in O - D = Direction vector, norm |D| = 1 - N = Projection of D on y axis, norm |N| = normal reaction - T = Projection of D on x axis, norm |T| = tangential reaction - R = Reflexion vector - - ^y - | - | - | - _ _ _| _ _ _ - * * *| - \ | / - \ |N / | - R\ | /D - \ | / | - \ | / - _________\|/______*_______>x - O T - - Let define theta = angle between D and N. Then cos(theta) = |N| / |D| = |N| since D is normalized. - - j|D = |j|*|D|*cos(theta) => |N| = j|D - - Then we simply have: - - D = N + T - - To compute tangential reaction : - - T = D - N - - To compute reflexion vector : - - R = N - T = N - (D-N) = 2*N - D -*/ - -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// Precompiled Header -#include "StdAfx.h" - -using namespace IceMaths; - -float Ray::SquareDistance(const IcePoint& Point, float* t) const -{ - IcePoint Diff = Point - mOrig; - float fT = Diff | mDir; - - if(fT<=0.0f) - { - fT = 0.0f; - } - else - { - fT /= mDir.SquareMagnitude(); - Diff -= fT*mDir; - } - - if(t) *t = fT; - - return Diff.SquareMagnitude(); -} |