From 2b3094d61de80dc029f66d4a78e75c1963076a5a Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Fri, 13 Sep 2019 11:31:11 +0200 Subject: [PATCH] avfilter/vf_v360: fix flat projection field of view calculation --- libavfilter/vf_v360.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c index 552cb24581..098bc07ef5 100644 --- a/libavfilter/vf_v360.c +++ b/libavfilter/vf_v360.c @@ -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; }