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spherical textures in cylindrical projections are now read in a better way

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Zeno Rogue 2018-04-18 20:57:25 +02:00
parent 2f9eebbb51
commit 02ae1b442a
1 changed files with 13 additions and 1 deletions
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14
textures.cpp
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@ -236,7 +236,19 @@ void texture_config::mapTextureTriangle(textureinfo &mi, const array<hyperpoint,
inmodel[0] *= vid.radius * 1. / vid.scrsize;
inmodel[1] *= vid.radius * 1. / vid.scrsize;
mi.tvertices.push_back(make_array<GLfloat>((inmodel[0]+1)/2, (inmodel[1]+1)/2, 0));
}
}
// when reading a spherical band in a cylindrical projection,
// take care that texture vertices are mapped not around the sphere
if(sphere && mdBandAny()) {
int s = size(mi.tvertices)-3;
ld xmin = min(mi.tvertices[s][0], min(mi.tvertices[s+1][0], mi.tvertices[s+2][0]));
ld xmax = max(mi.tvertices[s][0], max(mi.tvertices[s+1][0], mi.tvertices[s+2][0]));
if(xmax - xmin > .5) {
for(int ss=s; ss<s+3; ss++)
if(mi.tvertices[ss][0] < .5) mi.tvertices[ss][0] += 1;
}
}
}
texture_triangle *edited_triangle;