93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
/*
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Marching Hedrons LUT generator
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author: andrei (c) 2015
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*/
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#include "mh.h"
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const int MH::cell_edges[26][2] =
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{
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// the first 12 edges are the same as in MC
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{ 0, 1 }, { 1, 5 }, { 5, 4 }, { 4, 0 },
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{ 3, 2 }, { 2, 6 }, { 6, 7 }, { 7, 3 },
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{ 0, 3 }, { 1, 2 }, { 5, 6 }, { 4, 7 },
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// there are 14 more edges coming from the central point:
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// - 8 to corner
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{ 14, 0 }, { 14, 1 }, { 14, 2 }, { 14, 3 },
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{ 14, 4 }, { 14, 5 }, { 14, 6 }, { 14, 7 },
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// - and 6 to facenormal (center of each cube face)
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{ 14, 8 }, { 14, 9 }, { 14, 10 }, { 14, 11 }, { 14, 12 }, { 14, 13 },
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};
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#define E01 0.05
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#define E09 0.95
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#define V00 0.01
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#define V10 0.99
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const Vec3 MH::cell_vertices[8] =
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{
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Vec3(V00, V00, V00), Vec3(V10, V00, V00), Vec3(V10, V10, V00), Vec3(V00, V10, V00),
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Vec3(V00, V00, V10), Vec3(V10, V00, V10), Vec3(V10, V10, V10), Vec3(V00, V10, V10),
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};
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#define A05 0.2
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const float MH::cell_hedron_vertices[2][26][3] =
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{
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// low
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{
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// 12 cube edges
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// ++--
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// ++--
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{ A05, V00, V00 }, { V10, V00, A05 }, { A05, V00, V10 }, { V00, V00, A05 },
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{ A05, V10, V00 }, { V10, V10, A05 }, { A05, V10, V10 }, { V00, V10, A05 },
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{ V00, A05, V00 }, { V10, A05, V00 }, { V10, A05, V10 }, { V00, A05, V10 },
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// 8 center-to-corner edges
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{ E01, E01, E01 }, { E09, E01, E01 }, { E09, E09, E01 }, { E01, E09, E01 },
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{ E01, E01, E09 }, { E09, E01, E09 }, { E09, E09, E09 }, { E01, E09, E09 },
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// 6 center-to-facenormal edges
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{ 0.5, 1.0, 0.5 }, { 0.5, 0.5, 0.0 }, { 1.0, 0.5, 0.5 }, { 0.5, 0.5, 1.0 }, { 0.0, 0.5, 0.5 }, { 0.5, 0.0, 0.5 },
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},
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#undef A05
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#define A05 0.8
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// high
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{
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// 12 cube edges
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{ A05, V00, V00 }, { V10, V00, A05 }, { A05, V00, V10 }, { V00, V00, A05 },
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{ A05, V10, V00 }, { V10, V10, A05 }, { A05, V10, V10 }, { V00, V10, A05 },
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{ V00, A05, V00 }, { V10, A05, V00 }, { V10, A05, V10 }, { V00, A05, V10 },
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// 8 center-to-corner edges
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{ E01, E01, E01 }, { E09, E01, E01 }, { E09, E09, E01 }, { E01, E09, E01 },
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{ E01, E01, E09 }, { E09, E01, E09 }, { E09, E09, E09 }, { E01, E09, E09 },
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// 6 center-to-facenormal edges
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{ 0.5, 1.0, 0.5 }, { 0.5, 0.5, 0.0 }, { 1.0, 0.5, 0.5 }, { 0.5, 0.5, 1.0 }, { 0.0, 0.5, 0.5 }, { 0.5, 0.0, 0.5 },
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}
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};
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const int MH::faceVertices[6][9] =
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{
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{ 4, 5, 6, 7, 14, 15, 18, 19, 20 },
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{ 0, 8, 4, 9, 12, 13, 14, 15, 21 },
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{ 1, 9, 5, 10, 13, 14, 18, 17, 22 },
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{ 2, 10, 6, 11, 16, 17, 18, 19, 23 },
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{ 3, 8, 7, 11, 12, 15, 19, 16, 24 },
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{ 0, 1, 2, 3, 12, 13, 17, 16, 25 },
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};
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const int MH::edgeFacesCentralVertices[12][2] =
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{
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{ 13, 9 }, { 13, 10 }, { 13, 11 }, { 13, 12 },
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{ 8, 9 }, { 8, 10 }, { 8, 11 }, { 8, 12 },
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{ 9, 12 }, { 9, 10 }, { 10, 11 }, { 11, 12 },
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};
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int MH::edge_indices[16][4];
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