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Polymost: New projection hack algorithm: Keep zoom equivalent to Classic when looking straight ahead.

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Patch from Fox.

git-svn-id: https://svn.eduke32.com/eduke32@6486 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
hendricks266 2017-10-16 03:32:37 +00:00
parent d6682d58d3
commit c746b486b7
1 changed files with 4 additions and 2 deletions
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6
source/build/src/polymost.cpp
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@ -522,8 +522,10 @@ static float get_projhack_ratio(void)
{
if (glprojectionhacks)
{
float const mul = (gshang * gshang);
return 1.05f + mul * mul * mul * mul;
static constexpr float const projhack_zoom = 1.3f;
static constexpr float const maxcoshoriz = 0.540971179375801f; // 128/sqrt(128^2+199^2) = cos of an horiz diff of 199
static constexpr float const factor = (projhack_zoom - 1.f) * (1.f / maxcoshoriz);
return 1.f + (factor * (1.f - Bfabsf(gchang)));
}
// No projection hacks (legacy or new-aspect)