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avfilter/vf_v360: fix cylindrical input format

This commit is contained in:
Paul B Mahol 2020-03-01 11:24:31 +01:00
parent db8146f4dd
commit 1281399135
1 changed files with 2 additions and 2 deletions
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4
libavfilter/vf_v360.c
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@ -2641,10 +2641,10 @@ static int xyz_to_cylindrical(const V360Context *s,
int16_t us[4][4], int16_t vs[4][4], float *du, float *dv)
{
const float phi = atan2f(vec[0], -vec[2]) * s->input_mirror_modifier[0] / s->iflat_range[0];
const float theta = atan2f(-vec[1], hypotf(vec[0], vec[2])) * s->input_mirror_modifier[1] / s->iflat_range[1];
const float theta = asinf(-vec[1]) * s->input_mirror_modifier[1];
const float uf = (phi + 1.f) * (width - 1) / 2.f;
const float vf = (tanf(theta) + 1.f) * height / 2.f;
const float vf = (tanf(theta) / s->iflat_range[1] + 1.f) * height / 2.f;
const int ui = floorf(uf);
const int vi = floorf(vf);