701 lines
16 KiB
C++
701 lines
16 KiB
C++
#include <igl/svd3x3/arap.h>
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#include <igl/writeDMAT.h>
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#include <igl/partition.h>
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#include <igl/harmonic.h>
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#include <igl/cotmatrix.h>
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#include <igl/massmatrix.h>
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#include <igl/invert_diag.h>
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#include <igl/OpenGL_convenience.h>
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#include <igl/per_face_normals.h>
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#include <igl/per_vertex_normals.h>
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#include <igl/two_axis_valuator_fixed_up.h>
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#include <igl/normalize_row_lengths.h>
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#include <igl/draw_mesh.h>
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#include <igl/draw_floor.h>
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#include <igl/quat_to_mat.h>
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#include <igl/report_gl_error.h>
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#include <igl/readOBJ.h>
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#include <igl/readDMAT.h>
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#include <igl/readOFF.h>
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#include <igl/readMESH.h>
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#include <igl/jet.h>
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#include <igl/readWRL.h>
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#include <igl/trackball.h>
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#include <igl/list_to_matrix.h>
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#include <igl/snap_to_canonical_view_quat.h>
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#include <igl/snap_to_fixed_up.h>
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#include <igl/triangulate.h>
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#include <igl/material_colors.h>
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#include <igl/barycenter.h>
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#include <igl/matlab_format.h>
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#include <igl/material_colors.h>
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#include <igl/ReAntTweakBar.h>
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#include <igl/pathinfo.h>
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#include <igl/Camera.h>
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#include <igl/get_seconds.h>
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#include <igl/PI.h>
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#include <igl/STR.h>
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#include <YImage.hpp>
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#ifdef __APPLE__
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# include <GLUT/glut.h>
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#else
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# include <GL/glut.h>
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#endif
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#include <Eigen/Core>
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#include <vector>
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#include <iostream>
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#include <algorithm>
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struct State
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{
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igl::Camera camera;
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} s;
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enum RotationType
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{
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ROTATION_TYPE_IGL_TRACKBALL = 0,
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ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
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NUM_ROTATION_TYPES = 2,
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} rotation_type;
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bool is_rotating = false;
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int down_x,down_y;
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igl::Camera down_camera;
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bool is_animating = false;
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double animation_start_time = 0;
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double ANIMATION_DURATION = 0.5;
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Eigen::Quaterniond animation_from_quat;
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Eigen::Quaterniond animation_to_quat;
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// Use vector for range-based `for`
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std::vector<State> undo_stack;
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std::vector<State> redo_stack;
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void push_undo()
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{
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undo_stack.push_back(s);
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// Clear
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redo_stack = std::vector<State>();
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}
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void undo()
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{
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using namespace std;
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if(!undo_stack.empty())
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{
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redo_stack.push_back(s);
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s = undo_stack.front();
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undo_stack.pop_back();
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}
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}
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void redo()
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{
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using namespace std;
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if(!redo_stack.empty())
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{
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undo_stack.push_back(s);
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s = redo_stack.front();
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redo_stack.pop_back();
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}
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}
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void TW_CALL set_rotation_type(const void * value, void * clientData)
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{
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using namespace Eigen;
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using namespace std;
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using namespace igl;
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const RotationType old_rotation_type = rotation_type;
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rotation_type = *(const RotationType *)(value);
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if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
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old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
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{
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push_undo();
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animation_from_quat = s.camera.m_rotation_conj;
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snap_to_fixed_up(animation_from_quat,animation_to_quat);
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// start animation
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animation_start_time = get_seconds();
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is_animating = true;
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}
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}
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void TW_CALL get_rotation_type(void * value, void *clientData)
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{
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RotationType * rt = (RotationType *)(value);
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*rt = rotation_type;
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}
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// Width and height of window
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int width,height;
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// Position of light
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float light_pos[4] = {0.1,0.1,-0.9,0};
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// Vertex positions, normals, colors and centroid
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Eigen::MatrixXd V,U,N,C,mid;
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Eigen::VectorXi S;
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igl::ARAPData arap_data;
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Eigen::MatrixXi F;
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int selected_col = 0;
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// Faces
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// Bounding box diagonal length
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double bbd;
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int tot_num_samples = 0;
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#define REBAR_NAME "temp.rbr"
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igl::ReTwBar rebar; // Pointer to the tweak bar
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int num_in_selection(const Eigen::VectorXi & S)
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{
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int count = 0;
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for(int v = 0;v<S.rows(); v++)
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{
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if(S(v) >= 0)
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{
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count++;
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}
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}
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return count;
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}
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bool init_arap()
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{
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using namespace igl;
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using namespace Eigen;
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using namespace std;
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VectorXi b(num_in_selection(S));
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assert(S.rows() == V.rows());
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C.resize(S.rows(),3);
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MatrixXd bc = MatrixXd::Zero(b.size(),S.maxCoeff()+1);
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// get b from S
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{
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int bi = 0;
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for(int v = 0;v<S.rows(); v++)
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{
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if(S(v) >= 0)
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{
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b(bi) = v;
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bc(bi,S(v)) = 1;
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bi++;
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switch(S(v))
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{
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case 0:
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C.row(v) = RowVector3d(0.039,0.31,1);
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break;
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case 1:
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C.row(v) = RowVector3d(1,0.41,0.70);
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break;
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default:
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C.row(v) = RowVector3d(0.4,0.8,0.3);
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break;
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}
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}else
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{
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C.row(v) = RowVector3d(
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GOLD_DIFFUSE[0],
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GOLD_DIFFUSE[1],
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GOLD_DIFFUSE[2]);
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}
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}
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}
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// Store current mesh
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U = V;
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VectorXi _S;
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VectorXd _D;
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MatrixXd W;
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if(!harmonic(V,F,b,bc,1,W))
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{
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return false;
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}
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partition(W,100,arap_data.G,_S,_D);
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return arap_precomputation(V,F,b,arap_data);
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}
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bool update_arap()
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{
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using namespace Eigen;
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using namespace igl;
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using namespace std;
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MatrixXd bc(num_in_selection(S),V.cols());
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// get b from S
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{
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int bi = 0;
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for(int v = 0;v<S.rows(); v++)
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{
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if(S(v) >= 0)
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{
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bc.row(bi) = V.row(v);
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switch(S(v))
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{
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case 0:
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{
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const double r = mid(0)*0.25;
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bc(bi,0) += r*cos(0.5*get_seconds()*2.*PI);
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bc(bi,1) -= r+r*sin(0.5*get_seconds()*2.*PI);
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break;
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}
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case 1:
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{
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const double r = mid(1)*0.15;
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bc(bi,1) += r+r*cos(0.15*get_seconds()*2.*PI);
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bc(bi,2) -= r*sin(0.15*get_seconds()*2.*PI);
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//// Pull-up
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//bc(bi,0) += 0.42;//mid(0)*0.5;
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//bc(bi,1) += 0.55;//mid(0)*0.5;
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//// Bend
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//Vector3d t(-1,0,0);
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//Quaterniond q(AngleAxisd(PI/1.5,Vector3d(0,1.0,0.1).normalized()));
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//const Vector3d a = bc.row(bi);
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//bc.row(bi) = (q*(a-t) + t) + Vector3d(1.5,0.1,0.9);
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break;
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}
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default:
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break;
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}
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bi++;
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}
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}
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}
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if(!arap_solve(bc,arap_data,U))
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{
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cerr<<"arap_solve failed."<<endl;
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return false;
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}
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per_face_normals(U,F,N);
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return true;
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}
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void reshape(int width,int height)
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{
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using namespace std;
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// Save width and height
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::width = width;
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::height = height;
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glViewport(0,0,width,height);
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// Send the new window size to AntTweakBar
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TwWindowSize(width, height);
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// Set aspect for all cameras
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s.camera.m_aspect = (double)width/(double)height;
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for(auto & s : undo_stack)
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{
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s.camera.m_aspect = (double)width/(double)height;
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}
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for(auto & s : redo_stack)
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{
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s.camera.m_aspect = (double)width/(double)height;
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}
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}
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void push_scene()
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{
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using namespace igl;
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using namespace std;
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glMatrixMode(GL_PROJECTION);
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glPushMatrix();
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glLoadIdentity();
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auto & camera = s.camera;
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gluPerspective(camera.m_angle,camera.m_aspect,camera.m_near,camera.m_far);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glLoadIdentity();
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gluLookAt(
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camera.eye()(0), camera.eye()(1), camera.eye()(2),
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camera.at()(0), camera.at()(1), camera.at()(2),
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camera.up()(0), camera.up()(1), camera.up()(2));
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}
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void pop_scene()
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{
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glMatrixMode(GL_PROJECTION);
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glPopMatrix();
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glMatrixMode(GL_MODELVIEW);
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glPopMatrix();
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}
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void pop_object()
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{
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glPopMatrix();
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}
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// Scale and shift for object
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void push_object()
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{
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glPushMatrix();
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glScaled(2./bbd,2./bbd,2./bbd);
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glTranslated(-mid(0,0),-mid(0,1),-mid(0,2));
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}
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// Set up double-sided lights
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void lights()
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{
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using namespace std;
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glEnable(GL_LIGHTING);
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glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
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//glEnable(GL_LIGHT0);
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glEnable(GL_LIGHT1);
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float amb[4];
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amb[0] = amb[1] = amb[2] = 0;
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amb[3] = 1.0;
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float diff[4] = {0.0,0.0,0.0,0.0};
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diff[0] = diff[1] = diff[2] = (1.0 - 0/0.4);;
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diff[3] = 1.0;
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float zeros[4] = {0.0,0.0,0.0,0.0};
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float pos[4];
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copy(light_pos,light_pos+4,pos);
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glLightfv(GL_LIGHT0,GL_AMBIENT,amb);
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glLightfv(GL_LIGHT0,GL_DIFFUSE,diff);
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glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
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glLightfv(GL_LIGHT0,GL_POSITION,pos);
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pos[0] *= -1;
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pos[1] *= -1;
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pos[2] *= -1;
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glLightfv(GL_LIGHT1,GL_AMBIENT,amb);
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glLightfv(GL_LIGHT1,GL_DIFFUSE,diff);
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glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
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glLightfv(GL_LIGHT1,GL_POSITION,pos);
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}
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//const float back[4] = {30.0/255.0,30.0/255.0,50.0/255.0,0};
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const float back[4] = {255.0/255.0,255.0/255.0,255.0/255.0,0};
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void display()
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{
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using namespace Eigen;
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using namespace igl;
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using namespace std;
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// Update
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update_arap();
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glClearColor(back[0],back[1],back[2],0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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if(is_animating)
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{
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double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
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if(t > 1)
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{
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t = 1;
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is_animating = false;
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}
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const Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
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s.camera.orbit(q.conjugate());
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}
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glDisable(GL_LIGHTING);
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lights();
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push_scene();
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glEnable(GL_DEPTH_TEST);
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glDepthFunc(GL_LESS);
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glEnable(GL_NORMALIZE);
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push_object();
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// Draw the model
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// Set material properties
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//glDisable(GL_COLOR_MATERIAL);
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//glMaterialfv(GL_FRONT, GL_AMBIENT, GOLD_AMBIENT);
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//glMaterialfv(GL_FRONT, GL_DIFFUSE, GOLD_DIFFUSE );
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//glMaterialfv(GL_FRONT, GL_SPECULAR, GOLD_SPECULAR);
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//glMaterialf (GL_FRONT, GL_SHININESS, 128);
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//glMaterialfv(GL_BACK, GL_AMBIENT, SILVER_AMBIENT);
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//glMaterialfv(GL_BACK, GL_DIFFUSE, FAST_GREEN_DIFFUSE );
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//glMaterialfv(GL_BACK, GL_SPECULAR, SILVER_SPECULAR);
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//glMaterialf (GL_BACK, GL_SHININESS, 128);
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glEnable(GL_COLOR_MATERIAL);
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draw_mesh(U,F,N,C);
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glDisable(GL_COLOR_MATERIAL);
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pop_object();
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// Draw a nice floor
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glPushMatrix();
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const double floor_offset =
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-2./bbd*(V.col(1).maxCoeff()-mid(1));
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glTranslated(0,floor_offset,0);
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const float GREY[4] = {0.5,0.5,0.6,1.0};
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const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
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//draw_floor(GREY,DARK_GREY);
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draw_floor();
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glPopMatrix();
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pop_scene();
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report_gl_error();
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TwDraw();
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glutSwapBuffers();
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//if(is_animating)
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//{
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glutPostRedisplay();
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//}
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}
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void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
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{
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using namespace std;
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using namespace igl;
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using namespace Eigen;
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GLint viewport[4];
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glGetIntegerv(GL_VIEWPORT,viewport);
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if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
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{
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static double mouse_scroll_y = 0;
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const double delta_y = 0.125*direction;
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mouse_scroll_y += delta_y;
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TwMouseWheel(mouse_scroll_y);
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return;
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}
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push_undo();
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auto & camera = s.camera;
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if(wheel==0)
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{
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// factor of zoom change
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double s = (1.-0.01*direction);
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//// FOV zoom: just widen angle. This is hardly ever appropriate.
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//camera.m_angle *= s;
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//camera.m_angle = min(max(camera.m_angle,1),89);
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camera.push_away(s);
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}else
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{
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// Dolly zoom:
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camera.dolly_zoom((double)direction*1.0);
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}
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}
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void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
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{
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using namespace std;
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using namespace Eigen;
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using namespace igl;
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bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
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switch(glutButton)
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{
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case GLUT_RIGHT_BUTTON:
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case GLUT_LEFT_BUTTON:
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{
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switch(glutState)
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{
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case 1:
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// up
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glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
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is_rotating = false;
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break;
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case 0:
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// down
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if(!tw_using)
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{
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glutSetCursor(GLUT_CURSOR_CYCLE);
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// collect information for trackball
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is_rotating = true;
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down_camera = s.camera;
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down_x = mouse_x;
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down_y = mouse_y;
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}
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break;
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}
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break;
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}
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// Scroll down
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case 3:
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{
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mouse_wheel(0,-1,mouse_x,mouse_y);
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break;
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}
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// Scroll up
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case 4:
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{
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mouse_wheel(0,1,mouse_x,mouse_y);
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break;
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}
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// Scroll left
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case 5:
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{
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mouse_wheel(1,-1,mouse_x,mouse_y);
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break;
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}
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// Scroll right
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case 6:
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{
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mouse_wheel(1,1,mouse_x,mouse_y);
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break;
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}
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}
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glutPostRedisplay();
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}
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|
void mouse_drag(int mouse_x, int mouse_y)
|
|
{
|
|
using namespace igl;
|
|
using namespace Eigen;
|
|
|
|
if(is_rotating)
|
|
{
|
|
glutSetCursor(GLUT_CURSOR_CYCLE);
|
|
Quaterniond q;
|
|
auto & camera = s.camera;
|
|
switch(rotation_type)
|
|
{
|
|
case ROTATION_TYPE_IGL_TRACKBALL:
|
|
{
|
|
// Rotate according to trackball
|
|
igl::trackball<double>(
|
|
width,
|
|
height,
|
|
2.0,
|
|
down_camera.m_rotation_conj.coeffs().data(),
|
|
down_x,
|
|
down_y,
|
|
mouse_x,
|
|
mouse_y,
|
|
q.coeffs().data());
|
|
break;
|
|
}
|
|
case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
|
|
{
|
|
// Rotate according to two axis valuator with fixed up vector
|
|
two_axis_valuator_fixed_up(
|
|
width, height,
|
|
2.0,
|
|
down_camera.m_rotation_conj,
|
|
down_x, down_y, mouse_x, mouse_y,
|
|
q);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
camera.orbit(q.conjugate());
|
|
}else
|
|
{
|
|
TwEventMouseMotionGLUT(mouse_x, mouse_y);
|
|
}
|
|
glutPostRedisplay();
|
|
}
|
|
|
|
void key(unsigned char key, int mouse_x, int mouse_y)
|
|
{
|
|
using namespace std;
|
|
switch(key)
|
|
{
|
|
// ESC
|
|
case char(27):
|
|
rebar.save(REBAR_NAME);
|
|
// ^C
|
|
case char(3):
|
|
exit(0);
|
|
default:
|
|
if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
|
|
{
|
|
cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
|
|
}
|
|
}
|
|
|
|
glutPostRedisplay();
|
|
}
|
|
|
|
int main(int argc, char * argv[])
|
|
{
|
|
using namespace Eigen;
|
|
using namespace igl;
|
|
using namespace std;
|
|
|
|
// init mesh
|
|
string filename = "../shared/decimated-knight.obj";
|
|
string sfilename = "../shared/decimated-knight-selection.dmat";
|
|
if(argc < 3)
|
|
{
|
|
cerr<<"Usage:"<<endl<<" ./example input.obj selection.dmat"<<endl;
|
|
cout<<endl<<"Opening default mesh..."<<endl;
|
|
}else
|
|
{
|
|
// Read and prepare mesh
|
|
filename = argv[1];
|
|
sfilename = argv[2];
|
|
}
|
|
|
|
vector<vector<double > > vV,vN,vTC;
|
|
vector<vector<int > > vF,vTF,vFN;
|
|
// Convert extension to lower case
|
|
if(!igl::readOBJ(filename,vV,vTC,vN,vF,vTF,vFN))
|
|
{
|
|
return 1;
|
|
}
|
|
if(vV.size() > 0)
|
|
{
|
|
if(!list_to_matrix(vV,V))
|
|
{
|
|
cerr<<"Bad V"<<endl;
|
|
return 1;
|
|
}
|
|
triangulate(vF,F);
|
|
}
|
|
per_face_normals(V,F,N);
|
|
|
|
if(!readDMAT(sfilename,S))
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
// Compute normals, centroid, colors, bounding box diagonal
|
|
mid = 0.5*(V.colwise().maxCoeff() + V.colwise().minCoeff());
|
|
bbd = (V.colwise().maxCoeff() - V.colwise().minCoeff()).maxCoeff();
|
|
|
|
// Init glut
|
|
glutInit(&argc,argv);
|
|
|
|
if( !TwInit(TW_OPENGL, NULL) )
|
|
{
|
|
// A fatal error occured
|
|
fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
|
|
return 1;
|
|
}
|
|
// Create a tweak bar
|
|
rebar.TwNewBar("TweakBar");
|
|
rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
|
|
s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
|
|
s.camera.push_away(3);
|
|
s.camera.dolly_zoom(25-s.camera.m_angle);
|
|
TwType RotationTypeTW = ReTwDefineEnumFromString("RotationType",
|
|
"igl_trackball,two-a...-fixed-up");
|
|
rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
|
|
set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
|
|
rebar.load(REBAR_NAME);
|
|
|
|
glutInitDisplayString( "rgba depth double samples>=8 ");
|
|
glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
|
|
glutCreateWindow("colored-mesh");
|
|
glutDisplayFunc(display);
|
|
glutReshapeFunc(reshape);
|
|
glutKeyboardFunc(key);
|
|
glutMouseFunc(mouse);
|
|
glutMotionFunc(mouse_drag);
|
|
glutPassiveMotionFunc(
|
|
[](int x, int y)
|
|
{
|
|
TwEventMouseMotionGLUT(x,y);
|
|
glutPostRedisplay();
|
|
});
|
|
static std::function<void(int)> timer_bounce;
|
|
auto timer = [] (int ms) {
|
|
timer_bounce(ms);
|
|
};
|
|
timer_bounce = [&] (int ms) {
|
|
glutTimerFunc(ms, timer, ms);
|
|
glutPostRedisplay();
|
|
};
|
|
glutTimerFunc(500, timer, 500);
|
|
|
|
if(!init_arap())
|
|
{
|
|
cerr<<"Initializing arap failed."<<endl;
|
|
return 1;
|
|
}
|
|
|
|
glutMainLoop();
|
|
return 0;
|
|
}
|