702 lines
16 KiB
C++
702 lines
16 KiB
C++
#include <igl/OpenGL_convenience.h>
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#include <igl/per_face_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/polygon_mesh_to_triangle_mesh.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/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/cgal/selfintersect.h>
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#include <igl/cgal/intersect_other.h>
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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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// V,U Vertex positions
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// C,D Colors
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// N,W Normals
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// mid combined "centroid"
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Eigen::MatrixXd V,N,C,Z,mid,U,W,D;
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// F,G faces
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Eigen::MatrixXi F,G;
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bool has_other = false;
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bool show_A = true;
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bool show_B = true;
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int selected_col = 0;
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// Bounding box diagonal length
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double bbd;
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// Running ambient occlusion
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Eigen::VectorXd S;
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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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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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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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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_LEQUAL);
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glEnable(GL_NORMALIZE);
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glEnable(GL_COLOR_MATERIAL);
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glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
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push_object();
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// Draw the model
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// Set material properties
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glEnable(GL_COLOR_MATERIAL);
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const auto draw = [](
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const MatrixXd & V,
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const MatrixXi & F,
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const MatrixXd & N,
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const MatrixXd & C)
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{
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glEnable(GL_POLYGON_OFFSET_FILL); // Avoid Stitching!
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glPolygonOffset(1.0,1);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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draw_mesh(V,F,N,C);
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glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
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glDisable(GL_COLOR_MATERIAL);
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const float black[4] = {0,0,0,1};
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glColor4fv(black);
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glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, black);
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glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, black);
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glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
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glLightfv(GL_LIGHT0, GL_AMBIENT, black);
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glLightfv(GL_LIGHT0, GL_DIFFUSE, black);
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glLineWidth(1.0);
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glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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draw_mesh(V,F,N,C);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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glEnable(GL_COLOR_MATERIAL);
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};
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if(show_A)
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{
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draw(V,F,N,C);
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}
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if(show_B)
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{
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draw(U,G,W,D);
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}
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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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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)
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{
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using namespace igl;
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using namespace Eigen;
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if(is_rotating)
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{
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glutSetCursor(GLUT_CURSOR_CYCLE);
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Quaterniond q;
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auto & camera = s.camera;
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switch(rotation_type)
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{
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case ROTATION_TYPE_IGL_TRACKBALL:
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{
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// Rotate according to trackball
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igl::trackball<double>(
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width,
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height,
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2.0,
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down_camera.m_rotation_conj.coeffs().data(),
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down_x,
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down_y,
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mouse_x,
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mouse_y,
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q.coeffs().data());
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break;
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}
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case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
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{
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// Rotate according to two axis valuator with fixed up vector
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two_axis_valuator_fixed_up(
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width, height,
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2.0,
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down_camera.m_rotation_conj,
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down_x, down_y, mouse_x, mouse_y,
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q);
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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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camera.orbit(q.conjugate());
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}else
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{
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TwEventMouseMotionGLUT(mouse_x, mouse_y);
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}
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glutPostRedisplay();
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}
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void color_selfintersections(
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const Eigen::MatrixXd & V,
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const Eigen::MatrixXi & F,
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Eigen::MatrixXd & C)
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{
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using namespace igl;
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using namespace Eigen;
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MatrixXd SV;
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MatrixXi SF,IF;
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VectorXi J,IM;
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SelfintersectParam params;
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params.detect_only = true;
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selfintersect(V,F,params,SV,SF,IF,J,IM);
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C.resize(F.rows(),3);
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C.col(0).setConstant(0.4);
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C.col(1).setConstant(0.8);
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C.col(2).setConstant(0.3);
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for(int f = 0;f<IF.rows();f++)
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{
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C.row(IF(f,0)) = RowVector3d(1,0.4,0.4);
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C.row(IF(f,1)) = RowVector3d(1,0.4,0.4);
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}
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}
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void color_intersections(
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const Eigen::MatrixXd & V,
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const Eigen::MatrixXi & F,
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const Eigen::MatrixXd & U,
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const Eigen::MatrixXi & G,
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Eigen::MatrixXd & C,
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Eigen::MatrixXd & D)
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{
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using namespace igl;
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using namespace Eigen;
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MatrixXi IF;
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const bool first_only = false;
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intersect_other(V,F,U,G,first_only,IF);
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C.resize(F.rows(),3);
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C.col(0).setConstant(0.4);
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C.col(1).setConstant(0.8);
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C.col(2).setConstant(0.3);
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D.resize(G.rows(),3);
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D.col(0).setConstant(0.4);
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D.col(1).setConstant(0.3);
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D.col(2).setConstant(0.8);
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for(int f = 0;f<IF.rows();f++)
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{
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C.row(IF(f,0)) = RowVector3d(1,0.4,0.4);
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D.row(IF(f,1)) = RowVector3d(0.8,0.7,0.3);
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}
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}
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void key(unsigned char key, int mouse_x, int mouse_y)
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{
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using namespace std;
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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/truck.obj";
|
|
string filename_other = "";
|
|
switch(argc)
|
|
{
|
|
case 3:
|
|
// Read and prepare mesh
|
|
filename_other = argv[2];
|
|
has_other=true;
|
|
// fall through
|
|
case 2:
|
|
// Read and prepare mesh
|
|
filename = argv[1];
|
|
break;
|
|
default:
|
|
cerr<<"Usage:"<<endl<<" ./example input.obj [other.obj]"<<endl;
|
|
cout<<endl<<"Opening default mesh..."<<endl;
|
|
}
|
|
|
|
const auto read = []
|
|
(const string & filename, MatrixXd & V, MatrixXi & F, MatrixXd & N) -> bool
|
|
{
|
|
// dirname, basename, extension and filename
|
|
string d,b,ext,f;
|
|
pathinfo(filename,d,b,ext,f);
|
|
// Convert extension to lower case
|
|
transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
|
|
vector<vector<double > > vV,vN,vTC;
|
|
vector<vector<int > > vF,vFTC,vFN;
|
|
if(ext == "obj")
|
|
{
|
|
// Convert extension to lower case
|
|
if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
|
|
{
|
|
return false;
|
|
}
|
|
}else if(ext == "off")
|
|
{
|
|
// Convert extension to lower case
|
|
if(!igl::readOFF(filename,vV,vF,vN))
|
|
{
|
|
return false;
|
|
}
|
|
}else if(ext == "wrl")
|
|
{
|
|
// Convert extension to lower case
|
|
if(!igl::readWRL(filename,vV,vF))
|
|
{
|
|
return false;
|
|
}
|
|
//}else
|
|
//{
|
|
// // Convert extension to lower case
|
|
// MatrixXi T;
|
|
// if(!igl::readMESH(filename,V,T,F))
|
|
// {
|
|
// return false;
|
|
// }
|
|
// //if(F.size() > T.size() || F.size() == 0)
|
|
// {
|
|
// boundary_facets(T,F);
|
|
// }
|
|
}
|
|
if(vV.size() > 0)
|
|
{
|
|
if(!list_to_matrix(vV,V))
|
|
{
|
|
return false;
|
|
}
|
|
polygon_mesh_to_triangle_mesh(vF,F);
|
|
}
|
|
// Compute normals, centroid, colors, bounding box diagonal
|
|
per_face_normals(V,F,N);
|
|
return true;
|
|
};
|
|
|
|
if(!read(filename,V,F,N))
|
|
{
|
|
return 1;
|
|
}
|
|
if(has_other)
|
|
{
|
|
if(!read(argv[2],U,G,W))
|
|
{
|
|
return 1;
|
|
}
|
|
mid = 0.25*(V.colwise().maxCoeff() + V.colwise().minCoeff()) +
|
|
0.25*(U.colwise().maxCoeff() + U.colwise().minCoeff());
|
|
bbd = max(
|
|
(V.colwise().maxCoeff() - V.colwise().minCoeff()).maxCoeff(),
|
|
(U.colwise().maxCoeff() - U.colwise().minCoeff()).maxCoeff());
|
|
color_intersections(V,F,U,G,C,D);
|
|
}else
|
|
{
|
|
mid = 0.5*(V.colwise().maxCoeff() + V.colwise().minCoeff());
|
|
bbd = (V.colwise().maxCoeff() - V.colwise().minCoeff()).maxCoeff();
|
|
color_selfintersections(V,F,C);
|
|
}
|
|
|
|
// 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=[");
|
|
if(has_other)
|
|
{
|
|
rebar.TwAddVarRW("show_A",TW_TYPE_BOOLCPP,&show_A, "key=a",false);
|
|
rebar.TwAddVarRW("show_B",TW_TYPE_BOOLCPP,&show_B, "key=b",false);
|
|
}
|
|
rebar.load(REBAR_NAME);
|
|
|
|
glutInitDisplayString("rgba depth double samples>=8 ");
|
|
glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
|
|
glutCreateWindow("mesh-intersections");
|
|
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);
|
|
|
|
glutMainLoop();
|
|
return 0;
|
|
}
|