300 lines
8.6 KiB
C
300 lines
8.6 KiB
C
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/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.1 2005/03/15 07:00:54 ganovell
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*** empty log message ***
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****************************************************************************/
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#include <iostream>
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#include <fstream>
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#include <SDL/SDL.h>
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#include <gl/glew.h>
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#include <GL/glu.h>
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#include <GL/glut.h>
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#ifdef _SHOW_A_MESH
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// the trimesh drawer
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#include "mesh_type.h"
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#include <wrap/gl/trimesh.h>
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#endif //_SHOW_A_MESH
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#include <wrap/gui/trackball.h>
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bool fullscreen = false, quit = false,keepdrawing = true;
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int width =1024;
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int height = 768;
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int x,y;
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vcg::GlTrimesh<MyMesh> glWrap;
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int drawMode;
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int keypress;
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int pic_x,pic_y,doPick;
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float sc;
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MyMesh::FaceType * Pick(int x, int y, int width=4, int height=4);
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SDL_Surface *screen = NULL;
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vcg::Trackball track;
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void gl_print(float x, float y, char *str);
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bool init(const std::string &str) {
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if(SDL_Init(SDL_INIT_VIDEO) != 0) {
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return false;
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}
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const SDL_VideoInfo *info = SDL_GetVideoInfo();
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int bpp = info->vfmt->BitsPerPixel;
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SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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int flags = SDL_OPENGL;
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if(fullscreen)
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flags |= SDL_FULLSCREEN;
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screen = SDL_SetVideoMode(width, height, bpp, flags);
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if(!screen) {
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return false;
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}
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SDL_WM_SetIcon(SDL_LoadBMP("inspector.bmp"), NULL);
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SDL_WM_SetCaption(str.c_str(), str.c_str());
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glDisable(GL_DITHER);
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glShadeModel(GL_SMOOTH);
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glHint( GL_FOG_HINT, GL_NICEST );
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glEnable(GL_DEPTH_TEST);
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glDepthFunc( GL_LEQUAL );
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glDisable(GL_LIGHTING);
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glEnableClientState(GL_VERTEX_ARRAY);
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#ifdef _SHOW_A_MESH
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glWrap.Update();
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#endif
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return true;
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}
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void display(){
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(40, width/(float)height, 0.1, 100);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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gluLookAt(0,0,5, 0,0,0, 0,1,0);
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glViewport(0,0,width,height);
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track.GetView();
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track.Apply();
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track.Draw();
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#ifdef _SHOW_A_MESH
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glScalef(1-sc,1-sc,1-sc);
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glScalef(1/glWrap.m->bbox.Diag(),1/glWrap.m->bbox.Diag(),1/glWrap.m->bbox.Diag());
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glTranslate(-glWrap.m->bbox.Center());
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// to do some picking
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MyMesh::FaceType* fp=NULL;
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if(doPick)
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{
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fp = Pick(pic_x,pic_y,1,1);
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doPick=false;
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}
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// the trimesh drawing calls
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switch(drawMode)
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{
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case 0: glWrap.Draw<vcg::GLW::DMSmooth,vcg::GLW::CMNone,vcg::GLW::TMNone> ();break;
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case 1: glWrap.Draw<vcg::GLW::DMPoints,vcg::GLW::CMNone,vcg::GLW::TMNone> (); break;
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case 2: glWrap.Draw<vcg::GLW::DMWire,vcg::GLW::CMNone,vcg::GLW::TMNone> ();break;
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case 3: glWrap.Draw<vcg::GLW::DMFlatWire,vcg::GLW::CMNone,vcg::GLW::TMNone> ();break;
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case 4: glWrap.Draw<vcg::GLW::DMHidden,vcg::GLW::CMNone,vcg::GLW::TMNone> ();break;
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case 5: glWrap.Draw<vcg::GLW::DMFlat,vcg::GLW::CMNone,vcg::GLW::TMNone> ();break;
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case 6: break;
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}
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#endif
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// glScalef(scale, scale, scale);
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// Point3f center = sphere.Center();
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// glTranslatef(-center[0], -center[1], -center[2]);
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SDL_GL_SwapBuffers();
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}
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int sdl_idle() {
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SDL_Event event;
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while( !quit ) {
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unsigned int anything = SDL_PollEvent(&event);
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if(!anything && !keepdrawing) {
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SDL_WaitEvent(&event);
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anything = true;
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}
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if(anything) {
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switch( event.type ) {
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case SDL_QUIT: quit = 1; break;
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case SDL_KEYDOWN:
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switch(event.key.keysym.sym) {
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case SDLK_RCTRL:
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case SDLK_LCTRL: track.ButtonDown(vcg::Trackball::KEY_CTRL); break;
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case SDLK_q: exit(0); break;
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}
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break;
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case SDL_KEYUP:
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switch(event.key.keysym.sym) {
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case SDLK_RCTRL:
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case SDLK_LCTRL:
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track.ButtonUp(vcg::Trackball::KEY_CTRL); break;
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}
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break;
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case SDL_MOUSEBUTTONDOWN:
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x = event.button.x;
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y = height - event.button.y;
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#ifdef SDL_BUTTON_WHEELUP
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if(event.button.button == SDL_BUTTON_WHEELUP)
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track.MouseWheel(1);
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else if(event.button.button == SDL_BUTTON_WHEELDOWN)
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track.MouseWheel(-1);
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else
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#endif
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if(event.button.button == SDL_BUTTON_LEFT)
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track.MouseDown(x, y, vcg::Trackball::BUTTON_LEFT);
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else if(event.button.button == SDL_BUTTON_RIGHT)
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track.MouseDown(x, y, vcg::Trackball::BUTTON_RIGHT);
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break;
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case SDL_MOUSEBUTTONUP:
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x = event.button.x;
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y = height - event.button.y;
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if(event.button.button == SDL_BUTTON_LEFT)
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track.MouseUp(x, y, vcg::Trackball::BUTTON_LEFT);
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else if(event.button.button == SDL_BUTTON_RIGHT)
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track.MouseUp(x, y, vcg::Trackball::BUTTON_RIGHT);
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break;
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case SDL_MOUSEMOTION:
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while(SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_MOUSEMOTIONMASK));
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x = event.motion.x;
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y = height - event.motion.y;
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track.MouseMove(x, y);
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break;
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case SDL_VIDEOEXPOSE:
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default: break;
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}
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}
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display();
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}
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SDL_Quit();
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return -1;
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}
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void gl_print(float x, float y, char *str) {
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glRasterPos2f(x, y);
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int len = (int)strlen(str);
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for(int i = 0; i < len; i++)
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glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, str[i]);
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}
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#ifdef _SHOW_A_MESH
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// you can use this funcion replacing the face with your own pickable primitive
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MyMesh::FaceType * Pick(int x, int y,int w,int h)
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{
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long hits;
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int sz=glWrap.m->face.size()*5;
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unsigned int *selectBuf =new unsigned int[sz];
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// static unsigned int selectBuf[16384];
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glSelectBuffer(sz, selectBuf);
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glRenderMode(GL_SELECT);
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glInitNames();
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/* Because LoadName() won't work with no names on the stack */
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glPushName(-1);
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double mp[16];
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int viewport[4];
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glGetIntegerv(GL_VIEWPORT,viewport);
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glMatrixMode(GL_PROJECTION);
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glGetDoublev(GL_PROJECTION_MATRIX ,mp);
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glPushMatrix();
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glLoadIdentity();
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//gluPickMatrix(x, viewport[3]-y, 4, 4, viewport);
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gluPickMatrix(x, viewport[3]-y, width, height, viewport);
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glMultMatrixd(mp);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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int tricnt=0;
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MyMesh::FaceIterator ti;
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for(ti=glWrap.m->face.begin();ti!=glWrap.m->face.end();++ti)
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{
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if(!(*ti).IsD())
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{
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glLoadName(tricnt);
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glBegin(GL_TRIANGLES);
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glVertex((*ti).P(0));
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glVertex((*ti).P(1));
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glVertex((*ti).P(2));
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glEnd();
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}
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tricnt++;
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}
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glPopMatrix();
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glMatrixMode(GL_PROJECTION);
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glPopMatrix();
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glMatrixMode(GL_MODELVIEW);
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hits = glRenderMode(GL_RENDER);
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//xstring buf;
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//if (hits <= 0) return 0;
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std::vector< std::pair<double,int> > H;
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for(int ii=0;ii<hits;ii++){
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//TRACE("%ui %ui %ui %ui\n",selectBuf[ii*4],selectBuf[ii*4+1],selectBuf[ii*4+2],selectBuf[ii*4+3]);
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H.push_back( std::pair<double,int>(selectBuf[ii*4+1]/4294967295.0,selectBuf[ii*4+3]));
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}
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if(H.empty()) return NULL;
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std::sort(H.begin(),H.end());
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return (MyMesh::FaceType *)&glWrap.m->face[H[0].second];
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}
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#endif //_SHOW_A_MESH
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