allemang.d/toddcox-visualize
1
0
Fork 0
mirror of https://github.com/allemangD/toddcox-visualize.git synced 2025-11-10 12:02:47 -05:00
Code Issues Packages Projects Releases Wiki Activity

Add wireframe hypercube

Browse Source
This commit is contained in:
David Allemang
2022-02-16 18:07:30 -05:00
parent ae10f00127
commit c302cc03a5
4 changed files with 185 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
include/ml/meshlib.hpp
View File

@@ -13,8 +13,12 @@ namespace ml {
using PointsType = Eigen::MatrixXf;
using CellsType = Eigen::MatrixXi;
[[nodiscard]] virtual Eigen::Index dim() const = 0;
[[nodiscard]] virtual PointsType points() const = 0;
[[nodiscard]] virtual Eigen::Index rank() const = 0;
[[nodiscard]] virtual CellsType cells() const = 0;
};
@@ -31,6 +35,10 @@ namespace ml {
DynamicMesh(PointsType points, CellsType cells)
: _points(std::move(points)), _cells(std::move(cells)) {}
Eigen::Index dim() const override {
return _points.rows();
}
[[nodiscard]] PointsType &points() {
return _points;
}
@@ -39,6 +47,10 @@ namespace ml {
return _points;
}
Eigen::Index rank() const override {
return _points.rows();
}
[[nodiscard]] CellsType &cells() {
return _cells;
}
@@ -55,6 +67,10 @@ namespace ml {
explicit CubeMesh(PointsType::Scalar radius = 0.5)
: radius(radius) {}
Eigen::Index dim() const override {
return 3;
}
[[nodiscard]] PointsType points() const override {
PointsType out(3, 8);
out.transpose() <<
@@ -69,6 +85,10 @@ namespace ml {
return out;
}
Eigen::Index rank() const override {
return 3;
}
CellsType cells() const override {
CellsType out(3, 12);
out.transpose() <<
@@ -83,4 +103,54 @@ namespace ml {
return out;
}
};
class WireCubeMesh : public MeshBase {
PointsType::Scalar radius;
long _dim;
long _npoints;
long _nlines;
public:
explicit WireCubeMesh(long dim = 3, PointsType::Scalar radius = 0.5)
: _dim(dim), radius(radius) {
_npoints = 1 << _dim;
_nlines = _dim * (_npoints >> 1);
}
Eigen::Index dim() const override {
return _dim;
}
[[nodiscard]] PointsType points() const override {
PointsType out(_dim, _npoints);
out.fill(radius);
for (int i = 0; i < out.cols(); ++i) {
for (int j = 0; j < _dim; ++j) {
if ((i >> j) & 1) {
out(j, i) *= -1;
}
}
}
return out;
}
Eigen::Index rank() const override {
return 2;
}
[[nodiscard]] CellsType cells() const override {
CellsType out(2, _nlines);
int k = 0;
for (int i = 0; i < _npoints; ++i) {
for (int j = 0; j < _dim; ++j) {
if ((i >> j) & 1) {
out(0, k) = i;
out(1, k) = i ^ (1 << j);
k++;
}
}
}
return out;
}
};
}