45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
#include "GroundFlatMesh.hpp"
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#include <vector>
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const int GroundFlatMesh::MIN_I = -40;
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const int GroundFlatMesh::MAX_I = 100;
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const int GroundFlatMesh::MIN_J = -40;
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const int GroundFlatMesh::MAX_J = 100;
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GroundFlatMesh::GroundFlatMesh(const Point& center, double decay_speed)
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: center(center), decay_speed(decay_speed)
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{
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std::vector<std::vector<size_t> > vertice_at(MAX_I - MIN_I + 1,
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std::vector<size_t>(MAX_J - MIN_J + 1));
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for(int i=MIN_I; i < MAX_I + 1; ++i) {
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for(int j=MIN_J; j < MAX_J + 1; ++j) {
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vertice_at[i - MIN_I][j - MIN_J] =
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output.add_vertice(
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tile_position(i, j),
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Point(0., 1., 0.));
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}
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}
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for(int i=MIN_I; i < MAX_I; ++i) {
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for(int j=MIN_J; j < MAX_J; ++j) {
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output.add_face(Face(
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vertice_at[i - MIN_I][j - MIN_J],
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vertice_at[i - MIN_I][j + 1 - MIN_J],
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vertice_at[i + 1 - MIN_I][j + 1 - MIN_J]));
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output.add_face(Face(
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vertice_at[i - MIN_I][j - MIN_J],
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vertice_at[i + 1 - MIN_I][j + 1 - MIN_J],
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vertice_at[i + 1- MIN_I][j - MIN_J]));
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}
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}
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}
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double GroundFlatMesh::ith_dist(int i) const {
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return ((i < 0) ? -1 : 1) * decay_speed * i * i;
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}
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Point GroundFlatMesh::tile_position(int i, int j) const {
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return Point(ith_dist(i), 0., ith_dist(j));
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}
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