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40 lines
1.2 KiB
40 lines
1.2 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2018 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include <test_common.h>
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#include <igl/barycentric_interpolation.h>
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#include <igl/readOBJ.h>
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#include <igl/blue_noise.h>
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#include <igl/knn.h>
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#include <igl/octree.h>
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#include <igl/slice.h>
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TEST_CASE("blue_noise: decimated-knight", "[igl]")
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{
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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igl::readOBJ(test_common::data_path("decimated-knight.obj"),V,F);
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const double r = 0.01;
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Eigen::MatrixXd B,P;
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{
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Eigen::VectorXi I;
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igl::blue_noise(V,F,r,B,I,P);
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}
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// There should be ~4000 samples on this model
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REQUIRE(P.rows() > 3000);
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std::vector<std::vector<int> > point_indices;
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Eigen::MatrixXi CH;
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Eigen::MatrixXd CN;
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Eigen::VectorXd W;
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igl::octree(P,point_indices,CH,CN,W);
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Eigen::MatrixXi I;
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igl::knn(P,2,point_indices,CH,CN,W,I);
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Eigen::MatrixXd P2;
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igl::slice(P,I.col(1).eval(),1,P2);
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Eigen::VectorXd D = (P-P2).rowwise().norm();
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REQUIRE(D.minCoeff() > r);
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}
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