blind

suckless command-line video editing utility
git clone git://git.suckless.org/blind
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commit d7d10a866df51c219dc06589ab4c0c1704b90bbb
parent 3094d5ae9311818bb7bdceca0e08ccf52832a7df
Author: Mattias Andrée <maandree@kth.se>
Date:   Mon,  3 Jul 2017 16:35:20 +0200

blind-cone-gradient: make the singularity's value 0.5

Signed-off-by: Mattias Andrée <maandree@kth.se>

Diffstat:
src/blind-cone-gradient.c | 28++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/src/blind-cone-gradient.c b/src/blind-cone-gradient.c @@ -44,18 +44,22 @@ static int with_multiplier = 0; y = (TYPE)iy - y1;\ for (ix = 0; ix < width; ix++) {\ x = (TYPE)ix - x1;\ - v = atan2(y, x);\ - v -= u;\ - v += 2 * (TYPE)M_PI;\ - v = mod(v, 2 * (TYPE)M_PI);\ - v /= 2 * (TYPE)M_PI;\ - if (anticlockwise)\ - v = 1 - v;\ - v *= m;\ - if (symmetric) {\ - v = mod(2 * v, (TYPE)2);\ - if (v > 1)\ - v = 2 - v;\ + if (!x && !y) {\ + v = 0.5;\ + } else {\ + v = atan2(y, x);\ + v -= u;\ + v += 2 * (TYPE)M_PI;\ + v = mod(v, 2 * (TYPE)M_PI);\ + v /= 2 * (TYPE)M_PI;\ + if (anticlockwise)\ + v = 1 - v;\ + v *= m;\ + if (symmetric) {\ + v = mod(2 * v, (TYPE)2);\ + if (v > 1)\ + v = 2 - v;\ + }\ }\ buf[ptr][0] = buf[ptr][1] = buf[ptr][2] = buf[ptr][3] = v;\ if (++ptr == ELEMENTSOF(buf)) {\