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/*
#
# File : scene3d.cpp
# ( C++ source file )
#
# Description : A simple program that demonstrates the use of the
# 3D functions of CImg, in conjonction with the Board library.
# This file is a part of the CImg Library project.
# ( http://cimg.eu )
#
# Copyright : David Tschumperlé
# ( http://tschumperle.users.greyc.fr/ )
#
# License : CeCILL v2.0
# ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html )
#
# This software is governed by the CeCILL license under French law and
# abiding by the rules of distribution of free software. You can use,
# modify and/ or redistribute the software under the terms of the CeCILL
# license as circulated by CEA, CNRS and INRIA at the following URL
# "http://www.cecill.info".
#
# As a counterpart to the access to the source code and rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty and the software's author, the holder of the
# economic rights, and the successive licensors have only limited
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading, using, modifying and/or developing or reproducing the
# software by the user in light of its specific status of free software,
# that may mean that it is complicated to manipulate, and that also
# therefore means that it is reserved for developers and experienced
# professionals having in-depth computer knowledge. Users are therefore
# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or
# data to be ensured and, more generally, to use and operate it in the
# same conditions as regards security.
#
# The fact that you are presently reading this means that you have had
# knowledge of the CeCILL license and that you accept its terms.
#
*/
// Uncomment the line below to use the Board library.
// ( You will need to link your code with the board library object ).
// ( Get the Board Library at : http://libboard.sourceforge.net/ )
//#define cimg_use_board
#include "CImg.h"
using namespace cimg_library;
#ifndef cimg_imagepath
#define cimg_imagepath "img/"
#endif
// Main procedure
//----------------
int main() {
// Define a simple 3D scene, composed of various basic objects (torus, cone, cube, ...)
//-------------------------------------------------------------------------------------
std::fprintf(stderr," - Create 3D Scene.\n");
// Define objects vertices and primitives.
CImgList<unsigned int> cube_prims, cone_prims, torus_prims, sphere_prims, plane_prims, scene_prims;
const CImg<float>
cube_pts = CImg<>::box3d(cube_prims,60,60,60).shift_object3d().shift_object3d(-50,50,0),
cone_pts = CImg<>::cone3d(cone_prims,30,40).shift_object3d().shift_object3d(50,50,0),
torus_pts = CImg<>::torus3d(torus_prims,30,10).shift_object3d().shift_object3d(-50,-50,0),
sphere_pts = CImg<>::sphere3d(sphere_prims,30).shift_object3d().shift_object3d(50,-50,0),
plane_pts = CImg<>::plane3d(plane_prims,200,200,20,20).shift_object3d().shift_object3d(0,0,40);
plane_prims.insert(plane_prims.get_reverse_object3d());
// Define objects colors and textures.
const CImgList<unsigned char>
cone_cols = CImgList<unsigned char>(cone_prims.size(),CImg<unsigned char>::vector(128,63,255)),
torus_cols = CImgList<unsigned char>(torus_prims.size(),CImg<unsigned char>::vector(255,55,163)),
sphere_cols = CImgList<unsigned char>(sphere_prims.size(),CImg<unsigned char>::vector(115,115,63)),
plane_cols = CImgList<unsigned char>(plane_prims.size(),CImg<unsigned char>::vector(60,120,180));
const CImg<unsigned char> texture = CImg<unsigned char>(cimg_imagepath "milla.bmp").resize(128,128);
CImgList<unsigned char> cube_cols;
cimglist_for(cube_prims,p) {
cube_cols.insert(texture,~0U,true);
cube_prims[p].append(CImg<unsigned int>::vector(0,0,127,0,127,127,0,127),'y');
}
// Define objects opacities.
const CImg<float>
cube_opacs(cube_prims.size(),1,1,1,1.0f),
cone_opacs(cone_prims.size(),1,1,1,0.8f),
torus_opacs(torus_prims.size(),1,1,1,0.6f),
sphere_opacs(sphere_prims.size(),1,1,1,0.4f),
plane_opacs(plane_prims.size(),1,1,1,0.4f);
// Append all object in a single 3D scene.
const CImg<float> scene_pts = CImg<float>().
append_object3d(scene_prims,cube_pts,cube_prims).
append_object3d(scene_prims,cone_pts,cone_prims).
append_object3d(scene_prims,torus_pts,torus_prims).
append_object3d(scene_prims,sphere_pts,sphere_prims).
append_object3d(scene_prims,plane_pts,plane_prims);
const CImgList<unsigned char> scene_cols = (+cube_cols,cone_cols,torus_cols,sphere_cols,plane_cols);
const CImg<float> scene_opacs = (cube_opacs,cone_opacs,torus_opacs,sphere_opacs,plane_opacs)>'x';
// Display object3D in a user-interacted window and get final position matrix.
std::fprintf(stderr," - Display 3D Scene.\n");
const CImg<unsigned char> visu = CImg<unsigned char>(3,512,512,1).fill(230,230,255).permute_axes("yzcx");
CImg<float> view_matrix = CImg<>::identity_matrix(4);
visu.display_object3d("3D Scene",scene_pts,scene_prims,scene_cols,scene_opacs,true,4,4,false,
500.0f,0,0,-5000,0.5f,0.1f,true,view_matrix.data());
// Save object 3D as OFF file.
std::fprintf(stderr," - Save .OFF 3D object file.\n");
scene_pts.save_off(scene_prims,scene_cols,"output.off");
// Save 3D view in SVG, EPS and FIG files.
// (using the Board library : https://github.com/GreycLab/libboard ).
#ifdef cimg_use_board
// Define a Board instance
LibBoard::Board B;
// Set Background color of the board.
B.clear(230,230,255);
// Draw object both in 'visu' and in the board.
(view_matrix.crop(0,0,2,2))*=2;
(+visu).draw_object3d(B,visu.width()/2,visu.height()/2,visu.depth()/2,
view_matrix*scene_pts,scene_prims,scene_cols,scene_opacs,3).
display("Snapshot for Board");
// Save board into a vector graphics file format.
std::fprintf(stderr," - Save .SVG, .EPS and .FIG snapshots\n");
B.save("output.svg");
B.save("output.eps");
B.save("output.fig");
#endif
// Exit.
std::fprintf(stderr," - Exit.\n");
return 0;
}
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