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avfilter/vf_v360: fix flat projection field of view calculation

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This commit is contained in:
Paul B Mahol 2019-09-13 11:31:11 +02:00
parent 0993327939
commit 2b3094d61d
1 changed files with 3 additions and 8 deletions
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11
libavfilter/vf_v360.c
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@ -1777,14 +1777,9 @@ static int prepare_flat_out(AVFilterContext *ctx)
const float h_angle = 0.5f * s->h_fov * M_PI / 180.f;
const float v_angle = 0.5f * s->v_fov * M_PI / 180.f;
const float sin_phi = sinf(h_angle);
const float cos_phi = cosf(h_angle);
const float sin_theta = sinf(v_angle);
const float cos_theta = cosf(v_angle);
s->flat_range[0] = cos_theta * sin_phi;
s->flat_range[1] = sin_theta;
s->flat_range[2] = -cos_theta * cos_phi;
s->flat_range[0] = tan(h_angle);
s->flat_range[1] = tan(v_angle);
s->flat_range[2] = -1.f;
return 0;
}