CubeView.h

//
// "$Id$"
//
// CubeView class definitions for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2006 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
//    http://www.fltk.org/str.php
//

#ifndef CUBEVIEW_H
#define CUBEVIEW_H 1

#include <config.h>

#include <fltk/run.h>

#if HAVE_GL
#  include <fltk/GlWindow.h>
#  include <fltk/gl.h>
#else
#  include <fltk/Widget.h>
#endif /* HAVE_GL */

#include <stdlib.h>

#if HAVE_GL
class CubeView : public fltk::GlWindow {
#else
class CubeView : public fltk::Widget {
#endif /* HAVE_GL */

public:
    CubeView(int x,int y,int w,int h,const char *l=0);

    /* Set the rotation about the vertical (y ) axis.
     *
     * This function is called by the horizontal roller in CubeViewUI and the
     * initialize button in CubeViewUI.
     */
    void v_angle(float angle) { vAng=angle; }
    
    // Return the rotation about the vertical (y) axis.
    float v_angle() { return vAng; }

    /* Set the rotation about the horizontal (x) axis.
     *
     * This function is called by the vertical roller in CubeViewUI
     */
    void h_angle(float angle) { hAng=angle; }

    // the rotation about the horizontal (x) axis.
    float h_angle() { return hAng; }

    /* Sets the x shift of the cube view camera.
     *
     * This function is called by the slider in CubeViewUI
     */
    void panx(float x) { xshift=x; }

    /* Sets the y shift of the cube view camera.
     *
     * This function is called by the slider in CubeViewUI
     */
    void pany(float y) { yshift=y; }

    /* Sets the scale factor of the cube view camera.
     *
     * This function is called by the slider in CubeViewUI
     */
    void setsize(float v) { size=v; }

#if HAVE_GL
    /*The widget class draw() override.
     *
     *The draw() function initialize Gl for another round o f drawing
     * then calls specialized functions for drawing each of the
     * entities displayed in the cube view.
     *
     */
    void draw();    
#endif /* HAVE_GL */

private:
    /* Draw the cube boundaries
     *
     * Draw the faces of the cube using the boxv[] vertices, using
     * GL_LINE_LOOP for the faces. The color is \#defined by CUBECOLOR.
     */
#if HAVE_GL
    void drawCube();
#else
    void drawCube() { }
#endif /* HAVE_GL */

    // this value determines the scaling factor used to draw the cube.
    double size;
    
    float vAng, hAng;
    float xshift, yshift;

    float boxv0[3]; float boxv1[3];
    float boxv2[3]; float boxv3[3];
    float boxv4[3]; float boxv5[3];
    float boxv6[3]; float boxv7[3];
};

#endif

//
// End of "$Id$".
//