File size: 3,618 Bytes
5b89cb9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | #include <igl/read_triangle_mesh.h>
#include <igl/readTGF.h>
#include <igl/readDMAT.h>
#include <igl/lbs_matrix.h>
#include <igl/deform_skeleton.h>
#include <igl/direct_delta_mush.h>
#include <igl/opengl/glfw/Viewer.h>
#include <Eigen/Geometry>
#include <vector>
int main(int argc, char * argv[])
{
Eigen::MatrixXd V,U,C,W,T,M,Omega;
Eigen::MatrixXi F,BE;
igl::read_triangle_mesh(TUTORIAL_SHARED_PATH "/elephant.obj",V,F);
igl::readTGF( TUTORIAL_SHARED_PATH "/elephant.tgf",C,BE);
igl::readDMAT( TUTORIAL_SHARED_PATH "/elephant-weights.dmat",W);
igl::readDMAT( TUTORIAL_SHARED_PATH "/elephant-anim.dmat",T);
// convert weight to piecewise-rigid weights to stress test DDM
for (int i = 0; i < W.rows(); ++i)
{
int maxj;
W.row(i).maxCoeff(&maxj);
for (int j = 0; j < W.cols(); j++)
{
W(i, j) = double(maxj == j);
}
}
igl::lbs_matrix(V,W,M);
int p = 20;
float lambda = 3; // 0 < lambda
float kappa = 1; // 0 < kappa < lambda
float alpha = 0.8; // 0 <= alpha < 1
igl::direct_delta_mush_precomputation(V, F,W, p, lambda, kappa, alpha, Omega);
igl::opengl::glfw::Viewer viewer;
int frame = 0;
const int pr_id = viewer.selected_data_index;
viewer.append_mesh();
const int ddm_id = viewer.selected_data_index;
Eigen::RowVector3d offset(1.1*(V.col(0).maxCoeff()-V.col(0).minCoeff()),0,0);
viewer.callback_pre_draw = [&](igl::opengl::glfw::Viewer &) -> bool
{
if(viewer.core().is_animating)
{
const Eigen::Map<Eigen::MatrixXd> Tf(
T.data()+frame*T.rows(),4*W.cols(),3);
U = (M*Tf).rowwise()-offset;
Eigen::MatrixXd Cf;
Eigen::MatrixXi BEf;
igl::deform_skeleton(C,BE,Tf,Cf,BEf);
viewer.data(pr_id).set_edges(Cf,BEf, Eigen::RowVector3d(1,1,1));
viewer.data(pr_id).set_vertices(U);
viewer.data(pr_id).compute_normals();
{
std::vector<Eigen::Affine3d, Eigen::aligned_allocator<Eigen::Affine3d>>
T_list(BE.rows());
for (int e = 0; e < BE.rows(); e++)
{
T_list[e] = Eigen::Affine3d::Identity();
T_list[e].matrix().block(0,0,3,4) = Tf.block(e*4,0,4,3).transpose();
}
igl::direct_delta_mush(V, T_list, Omega, U);
}
U.rowwise() += offset;
viewer.data(ddm_id).set_vertices(U);
viewer.data(ddm_id).compute_normals();
frame++;
if(frame == T.cols())
{
frame = 0;
viewer.core().is_animating = false;
}
}
return false;
};
viewer.callback_key_pressed = [&](igl::opengl::glfw::Viewer &, unsigned int key, int mod)
{
switch(key)
{
case ' ':
viewer.core().is_animating = !viewer.core().is_animating;
return true;
}
return false;
};
for(auto & id : {pr_id,ddm_id})
{
if(id == pr_id)
{
viewer.data(id).set_mesh( (V.rowwise()-offset*1.0).eval() ,F);
viewer.data(id).set_colors(Eigen::RowVector3d(214./255.,170./255.,148./255.));
viewer.data(id).set_edges(C,BE, Eigen::RowVector3d(1,1,1));
}else if(id == ddm_id){
viewer.data(id).set_mesh( (V.rowwise()+offset*1.0).eval() ,F);
viewer.data(id).set_colors(Eigen::RowVector3d(132./255.,214./255.,105./255.));
}
viewer.data(id).show_lines = false;
viewer.data(id).set_face_based(true);
viewer.data(id).show_overlay_depth = false;
}
viewer.core().is_animating = false;
viewer.core().animation_max_fps = 24.;
//viewer.data().set_colors(V,F);
viewer.launch_init();
viewer.core().align_camera_center(V);
viewer.launch_rendering(true);
viewer.launch_shut();
}
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