graphicalmarkers.cpp

/********************************************************************************
 *  FARSA Experiments Library                                                   *
 *  Copyright (C) 2007-2012                                                     *
 *  Stefano Nolfi <stefano.nolfi@istc.cnr.it>                                   *
 *  Onofrio Gigliotta <onofrio.gigliotta@istc.cnr.it>                           *
 *  Gianluca Massera <emmegian@yahoo.it>                                        *
 *  Tomassino Ferrauto <tomassino.ferrauto@istc.cnr.it>                         *
 *                                                                              *
 *  This program 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.                                         *
 *                                                                              *
 *  This program 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 this program; if not, write to the Free Software                 *
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA  *
 ********************************************************************************/

#include "graphicalmarkers.h"

#ifndef GLMultMatrix
#define GLMultMatrix glMultMatrixf
// for double glMultMatrixd
#endif

namespace farsa {

CircularGraphicalMarker::CircularGraphicalMarker(real radius, World* world, QString name, const wMatrix& tm) :
    GraphicalWObject(world, name, tm),
    m_radius(radius)
{
}

CircularGraphicalMarker::~CircularGraphicalMarker()
{
}

void CircularGraphicalMarker::render(RenderWObject* renderer, QGLContext* gw)
{
    // Pushing our transformation matrix
    renderer->container()->setupColorTexture(gw, renderer);
    glPushMatrix();
    GLMultMatrix(&tm[0][0]);

    // Drawing the disk. We disable lightining
    glPushAttrib(GL_LIGHTING_BIT);
    glDisable(GL_LIGHTING);
    glColor3f(color().redF(), color().greenF(), color().blueF());

    // Actually drawing the disk
    GLUquadricObj *pObj = gluNewQuadric();
    gluDisk(pObj, 0.0f, m_radius, 20, 1);
    gluDeleteQuadric(pObj);

    // Restoring lighting status
    glPopAttrib();

    glPopMatrix();
}

PlanarArrowGraphicalMarker::PlanarArrowGraphicalMarker(real arrowLength, real arrowTailWidth, real arrowHeadWidth, real arrowTailPortion, World* world, QString name, const wMatrix& tm):
    GraphicalWObject(world, name, tm),
    m_arrowLength(arrowLength),
    m_arrowTailWidth(arrowTailWidth),
    m_arrowHeadWidth(arrowHeadWidth),
    m_arrowTailPortion(max(min(arrowTailPortion, 1.0), 0.0))
{
}

PlanarArrowGraphicalMarker::~PlanarArrowGraphicalMarker()
{
}

void PlanarArrowGraphicalMarker::render(RenderWObject* renderer, QGLContext* gw)
{
    // Pushing our transformation matrix
    renderer->container()->setupColorTexture(gw, renderer);
    glPushMatrix();
    GLMultMatrix(&tm[0][0]);

    // Drawing the arrow. We disable lightining
    glPushAttrib(GL_LIGHTING_BIT);
    glDisable(GL_LIGHTING);
    glColor3f(color().redF(), color().greenF(), color().blueF());

    // First drawing the tail
    const real tailLength = m_arrowLength * m_arrowTailPortion;
    glBegin(GL_QUADS);
    glNormal3f(0.0, 0.0, 1.0);
    glVertex3f(0.0, -m_arrowTailWidth / 2.0, 0.0);
    glVertex3f(0.0, m_arrowTailWidth / 2.0, 0.0);
    glVertex3f(tailLength, m_arrowTailWidth / 2.0, 0.0);
    glVertex3f(tailLength, -m_arrowTailWidth / 2.0, 0.0);
    glEnd();

    // Now drawing the tip
    glBegin(GL_TRIANGLES);
    glNormal3f(0.0, 0.0, 1.0);
    glVertex3f(tailLength, -m_arrowHeadWidth / 2.0, 0.0);
    glVertex3f(tailLength, m_arrowHeadWidth / 2.0, 0.0);
    glVertex3f(m_arrowLength, 0.0, 0.0);
    glEnd();

    // Restoring lighting status
    glPopAttrib();

    glPopMatrix();
}

}