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72 lines
2.3 KiB
72 lines
2.3 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2020 Xiangyu Kong <xiangyu.kong@mail.utoronto.ca>
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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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#ifndef IGL_DIRECT_DELTA_MUSH_H
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#define IGL_DIRECT_DELTA_MUSH_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <Eigen/Sparse>
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#include <Eigen/Geometry>
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#include <vector>
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namespace igl {
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// Computes Direct Delta Mesh Skinning (Variant 0) from "Direct Delta Mush
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// Skinning and Variants"
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//
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// Inputs:
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// V #V by 3 list of rest pose vertex positions
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// T #T list of bone pose transformations
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// Omega #V by #T*10 list of precomputated matrix values
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// Outputs:
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// U #V by 3 list of output vertex positions
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template <
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typename DerivedV,
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typename DerivedOmega,
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typename DerivedU>
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IGL_INLINE void direct_delta_mush(
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const Eigen::MatrixBase<DerivedV> & V,
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const std::vector<
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Eigen::Affine3d, Eigen::aligned_allocator<Eigen::Affine3d>
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> & T, /* should eventually be templated more generally than double */
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const Eigen::MatrixBase<DerivedOmega> & Omega,
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Eigen::PlainObjectBase<DerivedU> & U);
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// Precomputation
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//
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// Inputs:
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// V #V by 3 list of rest pose vertex positions
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// F #F by 3 list of triangle indices into rows of V
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// W #V by #Edges list of weights
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// p number of smoothing iterations
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// lambda rotation smoothing step size
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// kappa translation smoothness step size
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// alpha translation smoothness blending weight
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// Outputs:
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// Omega #V by #T*10 list of precomputated matrix values
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedW,
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typename DerivedOmega>
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IGL_INLINE void direct_delta_mush_precomputation(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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const Eigen::MatrixBase<DerivedW> & W,
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const int p,
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const typename DerivedV::Scalar lambda,
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const typename DerivedV::Scalar kappa,
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const typename DerivedV::Scalar alpha,
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Eigen::PlainObjectBase<DerivedOmega> & Omega);
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} // namespace igl
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#ifndef IGL_STATIC_LIBRARY
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# include "direct_delta_mush.cpp"
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#endif
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#endif
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