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matrix: fix missed negation on one component of ortho

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This commit is contained in:
Danny Robson 2018-03-06 13:53:39 +11:00
parent b23c274742
commit c2a880c290
1 changed files with 10 additions and 10 deletions
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20
matrix.cpp
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@ -133,19 +133,19 @@ matrix<Rows,Cols,T>::is_affine (void) const
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
template <typename T> template <typename T>
util::matrix4<T> util::matrix4<T>
util::ortho (T left, T right, util::ortho (T l, T r, // left, right
T bottom, T top, T b, T t, // bottom, top
T near, T far) T n, T f) // near, far
{ {
CHECK_GT (far, near); CHECK_GT (f, n);
T tx = - (right + left) / (right - left); T tx = - (r + l) / (r - l);
T ty = - (top + bottom) / (top - bottom); T ty = - (t + b) / (t - b);
T tz = - (far + near) / (far - near); T tz = - (f + n) / (f - n);
T rl = 2 / (right - left); T rl = 2 / (r - l);
T tb = 2 / (top - bottom); T tb = 2 / (t - b);
T fn = 2 / (far - near); T fn = -2 / (f - n);
return {{ return {{
{ rl, 0, 0, tx }, { rl, 0, 0, tx },