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Fix horizontal scrolling of background images.

1008-fix
immibis 2017-08-05 19:54:13 +12:00
parent 2e8798b33d
commit 8b0ccf6667
1 changed files with 3 additions and 2 deletions
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5
src/graphics/engine/engine.cpp
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@ -4741,8 +4741,9 @@ void CEngine::DrawBackgroundImage()
if (a > Math::PI/4.0f) a = Math::PI/4.0f;
if (a < -Math::PI/4.0f) a = -Math::PI/4.0f;
u1 = -m_eyeDirH/Math::PI;
u2 = u1+1.0f/Math::PI;
// Note the background covers Math::PI radians, i.e. it repeats twice per rotation!
u1 = (-m_eyeDirH - GetHFovAngle()/2.0f) / Math::PI;
u2 = u1 + (GetHFovAngle() / Math::PI);
v1 = (1.0f-h)*(0.5f+a/(2.0f*Math::PI/4.0f))+0.1f;
v2 = v1+h;