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https://github.com/SoftFever/OrcaSlicer.git
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2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2014 Daniele Panozzo <daniele.panozzo@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 "frame_to_cross_field.h"
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#include <igl/local_basis.h>
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#include <igl/dot_row.h>
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IGL_INLINE void igl::frame_to_cross_field(
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const Eigen::MatrixXd& V,
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const Eigen::MatrixXi& F,
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const Eigen::MatrixXd& FF1,
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const Eigen::MatrixXd& FF2,
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Eigen::MatrixXd& X)
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{
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using namespace Eigen;
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// Generate local basis
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MatrixXd B1, B2, B3;
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igl::local_basis(V,F,B1,B2,B3);
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// Project the frame fields in the local basis
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MatrixXd d1, d2;
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d1.resize(F.rows(),2);
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d2.resize(F.rows(),2);
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d1 << igl::dot_row(B1,FF1), igl::dot_row(B2,FF1);
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d2 << igl::dot_row(B1,FF2), igl::dot_row(B2,FF2);
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X.resize(F.rows(), 3);
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for (int i=0;i<F.rows();i++)
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{
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Vector2d v1 = d1.row(i);
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Vector2d v2 = d2.row(i);
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// define inverse map that maps the canonical axis to the given frame directions
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Matrix2d A;
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A << v1[0], v2[0],
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v1[1], v2[1];
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// find the closest rotation
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Eigen::JacobiSVD<Matrix<double,2,2> > svd(A, Eigen::ComputeFullU | Eigen::ComputeFullV );
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Matrix2d C = svd.matrixU() * svd.matrixV().transpose();
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Vector2d v = C.col(0);
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X.row(i) = v(0) * B1.row(i) + v(1) * B2.row(i);
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}
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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#endif
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