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Code Issues 155 Wiki Activity

fix(track): the blending at the joints exactly as long as set, however far apart the vertices

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Hirek
2026-10-22 00:29:00 +02:00
parent c17d77fe6c
commit c7f4790aa9
3 changed files with 21 additions and 17 deletions
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11
world/TrackBlend.h
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@@ -20,7 +20,7 @@ http://mozilla.org/MPL/2.0/.
class TTrack;
// the rails and the ballast of a track blended into those of the tracks joined at its ends, where their textures differ: near
// an end the vertices carry the weight of the track joined there (y, z, w of their user data for the ends p1, p2 and p4 of a
// an end the vertices carry how far they are from it (y, z, w of their user data for the ends p1, p2 and p4 of a
// switch) and the track is drawn with a material fading its texture into theirs. a plain track blends its rails and its
// ballast, a switch the trackbed made for it
namespace track_blend {
@@ -47,9 +47,14 @@ struct blending {
bool any() const {
return material != null_handle; }
// the weights of the ends put in the user data of the vertices (relative to the origin of the track), made as long as the
// vertices where it's shorter; what the user data hold at x is kept
// how far the vertices (relative to the origin of the track) are into it from each end, in the length of its blending, put
// in their user data: distance / length where the track joined blends back, single_mark - distance / length where it doesn't,
// none_mark where nothing's blended at the end. a distance runs straight along the vertices, so it's led between them exactly
// and the shader (trackblend.glsl) works the weight out of it for each fragment, however far apart the vertices are. the user
// data are made as long as the vertices where they're shorter; what they hold at x is kept
void weigh( gfx::vertex_array const &Vertices, gfx::userdata_array &Userdata ) const;
static float constexpr single_mark { -100.f };
static float constexpr none_mark { 10000.f };
};
// how the rails or the ballast of the track blend into those of the tracks joined to it, nothing for the tracks which don't