equal
deleted
inserted
replaced
140 qreal v = sina + cosa; |
140 qreal v = sina + cosa; |
141 qreal du = 2 * sina / bufw; |
141 qreal du = 2 * sina / bufw; |
142 qreal dv = -2 * cosa / bufw; |
142 qreal dv = -2 * cosa / bufw; |
143 |
143 |
144 for (int ray = 0; ray < bufw; ++ray, u += du, v += dv) { |
144 for (int ray = 0; ray < bufw; ++ray, u += du, v += dv) { |
145 // everytime this ray advances 'u' units in x direction, |
145 // every time this ray advances 'u' units in x direction, |
146 // it also advanced 'v' units in y direction |
146 // it also advanced 'v' units in y direction |
147 qreal uu = (u < 0) ? -u : u; |
147 qreal uu = (u < 0) ? -u : u; |
148 qreal vv = (v < 0) ? -v : v; |
148 qreal vv = (v < 0) ? -v : v; |
149 qreal duu = 1 / uu; |
149 qreal duu = 1 / uu; |
150 qreal dvv = 1 / vv; |
150 qreal dvv = 1 / vv; |