Viewer.cpp

/// \file Viewer.cpp
#include "Viewer.h"

using namespace std;

// Draws a tetrahedron with 4 colors.
void Viewer::draw() {
    float colorBronzeDiff[4] = { 0.8, 0.6, 0.0, 1.0 };
    float colorBronzeSpec[4] = { 1.0, 1.0, 0.4, 1.0 };
    float colorNull      [4] = { 0.0, 0.0, 0.0, 1.0 };
    // OpenGL met en place par défaut le modèle de Phong d'illumination.
    glBegin(GL_TRIANGLES);
    glEnable(GL_COLOR_MATERIAL); // le materiau peut changer à chaque triangle.
    // Si vous les écrivez là, ces couleurs/réglages seront partagés par tous
    // les triangles.
    glColor4fv(colorBronzeDiff);
    glMaterialfv(GL_FRONT, GL_DIFFUSE, colorBronzeDiff);
    glMaterialfv(GL_FRONT, GL_SPECULAR, colorBronzeSpec);
    glMaterialf(GL_FRONT, GL_SHININESS, 20.0f );

    for (auto triangle : ptrSoup->triangles) {
        Vecteur n = triangle.normal();
        glNormal3f( n[ 0 ], n[ 1 ], n[ 2 ] );
        glVertex3f(triangle.v1[0], triangle.v1[1], triangle.v1[2]);
        glVertex3f(triangle.v2[0], triangle.v2[1], triangle.v2[2]);
        glVertex3f(triangle.v3[0], triangle.v3[1], triangle.v3[2]);
    }
    glDisable(GL_COLOR_MATERIAL);
    glEnd();
}


void Viewer::init() {
    // Restore previous viewer state.
    restoreStateFromFile();

    Vecteur v1;
    Vecteur v2;
    ptrSoup->boundingBox(v1, v2);
    camera()->setSceneBoundingBox(qglviewer::Vec(v1[0], v1[1], v1[2]), qglviewer::Vec(v2[0], v2[1], v2[2]));
    camera()->showEntireScene();

    // Opens help window
    help();
}

QString Viewer::helpString() const {
    QString text("<h2>S i m p l e V i e w e r</h2>");
    text += "Use the mouse to move the camera around the object. ";
    text += "You can respectively revolve around, zoom and translate with the three mouse buttons. ";
    text += "Left and middle buttons pressed together rotate around the camera view direction axis<br><br>";
    text += "Pressing <b>Alt</b> and one of the function keys (<b>F1</b>..<b>F12</b>) defines a camera keyFrame. ";
    text += "Simply press the function key again to restore it. Several keyFrames define a ";
    text += "camera path. Paths are saved when you quit the application and restored at next start.<br><br>";
    text += "Press <b>F</b> to display the frame rate, <b>A</b> for the world axis, ";
    text += "<b>Alt+Return</b> for full screen mode and <b>Control+S</b> to save a snapshot. ";
    text += "See the <b>Keyboard</b> tab in this window for a complete shortcut list.<br><br>";
    text += "Double clicks automates single click actions: A left button double click aligns the closer axis with the camera (if close enough). ";
    text += "A middle button double click fits the zoom of the camera and the right button re-centers the scene.<br><br>";
    text += "A left button double click while holding right button pressed defines the camera <i>Revolve Around Point</i>. ";
    text += "See the <b>Mouse</b> tab and the documentation web pages for details.<br><br>";
    text += "Press <b>Escape</b> to exit the viewer.";
    return text;
}