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