-// Copyright (C) 2006 Erik Dahlberg
-//
-// This file is part of LSystem3d.
-//
-// LSystem3D is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License
-// as published by the Free Software Foundation; either version 2
-// of the License, or (at your option) any later version.
-//
-// LSystem3D is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with LSystem3D; if not, write to the Free Software
-// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-
-
-#include <string>
-
-#include <glui.h>
-#include <GL/gl.h>
-#include <GL/glu.h>
-#include <GL/freeglut.h>
-
-#include "callbacks.h"
-#include "lindenmayersystem.h"
-#include "lsystemparameters.h"
-#include "model.h"
-#include "openglwindow.h"
-
-using namespace std;
-
-extern OpenGLWindow *openglWindow;
-
-
-
-/**
- * Constructor
- */
-OpenGLWindow::OpenGLWindow()
-{
- // misc init
-
- openglWindow = this;
- _busyGenerating = true;
- lsystemParametersPath = "lsystem.xml";
- defaultView();
-
-
-
- // init GLUT & GLUI
- // ----------------
-
- // drawing window
- glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
- glutInitWindowSize(800, 800);
- int _window = glutCreateWindow("lsystem");
-
- // return control after closing the window
- glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, 1);
-
- // register callbacks
- glutKeyboardFunc(glutKeyboardCB);
- glutSpecialFunc(glutSpecialCB);
- glutDisplayFunc(glutDisplayCB);
- GLUI_Master.set_glutIdleFunc(glutIdleCB);
-
- // GUI window
- _glui = GLUI_Master.create_glui("lsystem");
-
- // model and l-system creation
- _model = new Model;
- _lsystem = new LindenmayerSystem(_model);
-
- // load lsystem parameters
- _lsystemParameters.load(_lsystem, lsystemParametersPath.c_str());
-
-
-
- // create GLUI widgets
- // -------------------
-
- // axiom
- _axiomEditText = _glui->add_edittext("Axiom", GLUI_EDITTEXT_TEXT);
- _axiomEditText->set_text((char *)_lsystem->getAxiom().c_str());
-
- // rules
- // TODO: make dynamic!
- GLUI_Panel *panel = _glui->add_panel("Rules", GLUI_PANEL_EMBOSSED);
- _ruleEditTexts.push_back(_glui->add_edittext_to_panel(panel, "#1", GLUI_EDITTEXT_TEXT));
- _ruleEditTexts.push_back(_glui->add_edittext_to_panel(panel, "#2", GLUI_EDITTEXT_TEXT));
- _ruleEditTexts.push_back(_glui->add_edittext_to_panel(panel, "#3", GLUI_EDITTEXT_TEXT));
- _ruleEditTexts.push_back(_glui->add_edittext_to_panel(panel, "#4", GLUI_EDITTEXT_TEXT));
- _ruleEditTexts.push_back(_glui->add_edittext_to_panel(panel, "#5", GLUI_EDITTEXT_TEXT));
- _ruleEditTexts[0]->set_w(200);
- _ruleEditTexts[1]->set_w(200);
- _ruleEditTexts[2]->set_w(200);
- _ruleEditTexts[3]->set_w(200);
- _ruleEditTexts[4]->set_w(200);
-
- // sync gui and l-system
- map<string,string> rules = _lsystem->getRules();
- map<string,string>::iterator currentRule;
- int i = 0;
- for (currentRule = rules.begin(); currentRule != rules.end(); currentRule++)
- {
- string rule = currentRule->first + "=" + currentRule->second;
- // TODO: bounds?
- _ruleEditTexts[i++]->set_text((char *)rule.c_str());
- }
-
- // angle
- _angleSpinner = _glui->add_spinner("Angle", GLUI_SPINNER_FLOAT, NULL, -1, (GLUI_Update_CB)gluiSpinnerAngleCB);
- _angleSpinner->set_float_val(_lsystem->getAngle());
- _angleSpinner->set_speed(1.0);
-
- // iterations
- _iterationsSpinner = _glui->add_spinner("Iterations", GLUI_SPINNER_INT);
- _iterationsSpinner->set_int_val(_lsystem->getNumIterations());
-
-
- _glui->add_separator();
-
-
- // live update
- _liveUpdates = 1;
- _liveCheckbox = _glui->add_checkbox("Live update", &_liveUpdates);
-
- // reset
- _glui->add_button("Reset view", -1, (GLUI_Update_CB)gluiButtonResetCB);
-
- // generate
- _glui->add_button("Generate", -1, (GLUI_Update_CB)gluiButtonGenerateCB);
-
-
- _glui->set_main_gfx_window(_window);
-
-
-
-
- // init OpenGL view
- // ----------------
-
- // projection
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(65, 1, 1, 100);
-
- // model view
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- gluLookAt(0.0, 0.0, 2.0,
- 0.0, 0.0, 0.0,
- 0.0, 1.0, 0.0);
-
- glClearColor(0.0, 0.0, 0.0, 0.0);
-
- glShadeModel(GL_SMOOTH);
-
- // light
- GLfloat lightPosition[] = {0.0, 0.0, 2.0, 0.0};
- GLfloat white[] = {1.0, 1.0, 1.0, 1.0};
- glLightfv(GL_LIGHT0, GL_DIFFUSE, white);
- glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
-
- glEnable(GL_COLOR_MATERIAL);
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
-
- glutMainLoop();
-}
-
-
-
-/**
- * Destructor
- */
-OpenGLWindow::~OpenGLWindow()
-{
- // save current l-system to disk
- _lsystemParameters.save(_lsystem, lsystemParametersPath.c_str());
-
- delete _lsystem;
- delete _model;
-}
-
-
-
-/**
- * Start generation of l-system data
- */
-void OpenGLWindow::generate()
-{
- _busyGenerating = true;
-
- // read GLUI widgets and set corresponding l-system parameters
-
- // axiom
- char *axiom = _axiomEditText->get_text();
- _lsystem->setAxiom(axiom);
-
- // rules
- vector<char *> rules;
- rules.push_back(_ruleEditTexts[0]->get_text());
- rules.push_back(_ruleEditTexts[1]->get_text());
- rules.push_back(_ruleEditTexts[2]->get_text());
- rules.push_back(_ruleEditTexts[3]->get_text());
- rules.push_back(_ruleEditTexts[4]->get_text());
-
- for (int i = 0; i < rules.size(); i++)
- {
- if (rules[i][0] != '\0')
- {
- // non-empty rule
-
- // separate rule name from the actual rule
- string ruleName(rules[i], 1);
- string theRule(rules[i]+2);
-
- _lsystem->setRule(ruleName, theRule);
- }
- }
-
- // angle
- float angle = _angleSpinner->get_float_val();
- _lsystem->setAngle(angle);
-
- // iterations
- int iterations = _iterationsSpinner->get_int_val();
- _lsystem->setNumIterations(iterations);
-
-
- // start generation
- _model->begin();
- _lsystem->generate();
- _model->end();
-
- _busyGenerating = false;
-}
-
-
-
-/**
- * Move camera left
- */
-void OpenGLWindow::left()
-{
- _xModel += 0.1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Move camera right
- */
-void OpenGLWindow::right()
-{
- _xModel -= 0.1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Move camera up
- */
-void OpenGLWindow::up()
-{
- _yModel -= 0.1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Move camera down
- */
-void OpenGLWindow::down()
-{
- _yModel += 0.1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Move camera forth
- */
-void OpenGLWindow::forth()
-{
- _zModel += 1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Move camera back
- */
-void OpenGLWindow::back()
-{
- _zModel -= 1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Zoom in
- */
-void OpenGLWindow::zoomIn()
-{
- _scaleModel *= 1.1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Zoom out
- */
-void OpenGLWindow::zoomOut()
-{
- _scaleModel /= 1.1;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Rotate around y-axis
- */
-void OpenGLWindow::rotateY()
-{
- _yRotationModel = int(_yRotationModel + 5.0) % 360;
- glutPostRedisplay();
-}
-
-
-
-/**
- * Draw l-system model to screen
- */
-void OpenGLWindow::draw()
-{
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- if (!_busyGenerating)
- {
- // ready for rendering
-
- glPushMatrix();
- glTranslatef(_xModel, _yModel, _zModel);
- glScalef(_scaleModel, _scaleModel, _scaleModel);
- glRotatef(_yRotationModel, 0.0, 1.0, 0.0);
-
- _model->draw();
- glPopMatrix();
- }
-
- glutSwapBuffers();
-}
-
-
-
-/**
- * Reset to default view
- */
-void OpenGLWindow::defaultView()
-{
- _xModel = _yModel = _zModel = 0.0;
- _scaleModel = 1.0;
- _yRotationModel = 0.0;
-}
-
-
-
-/**
- * Check if live mode is activated
- * @return true, if activated
- */
-bool OpenGLWindow::liveActivated()
-{
- return _liveUpdates;
-}
repositories / lsystem3d.git / commitdiff
