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//
// "$Id: CubeView.cxx,v 1.1 1999/02/22 21:33:54 mike Exp $"
//
// CubeView class implementation for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-1999 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 to "fltk-bugs@easysw.com".
//
#include "CubeView.h"
#include <math.h>
CubeView::CubeView(int x,int y,int w,int h,const char *l)
: Fl_Gl_Window(x,y,w,h,l)
{
vAng = 0.0;
hAng=0.0;
size=10.0;
/* The cube definition. These are the vertices of a unit cube
* centered on the origin.*/
boxv0[0] = -0.5; boxv0[1] = -0.5; boxv0[2] = -0.5;
boxv1[0] = 0.5; boxv1[1] = -0.5; boxv1[2] = -0.5;
boxv2[0] = 0.5; boxv2[1] = 0.5; boxv2[2] = -0.5;
boxv3[0] = -0.5; boxv3[1] = 0.5; boxv3[2] = -0.5;
boxv4[0] = -0.5; boxv4[1] = -0.5; boxv4[2] = 0.5;
boxv5[0] = 0.5; boxv5[1] = -0.5; boxv5[2] = 0.5;
boxv6[0] = 0.5; boxv6[1] = 0.5; boxv6[2] = 0.5;
boxv7[0] = -0.5; boxv7[1] = 0.5; boxv7[2] = 0.5;
};
// The color used for the edges of the bounding cube.
#define CUBECOLOR 255,255,255,255
void CubeView::drawCube() {
/* Draw a colored cube */
glBegin(GL_LINE_LOOP); glColor4ub(CUBECOLOR); v3f(boxv0); v3f(boxv1); v3f(boxv2); v3f(boxv3); glEnd();
glBegin(GL_LINE_LOOP); glColor4ub(CUBECOLOR); v3f(boxv5); v3f(boxv4); v3f(boxv7); v3f(boxv6); glEnd();
glBegin(GL_LINE_LOOP); glColor4ub(CUBECOLOR); v3f(boxv0); v3f(boxv4); v3f(boxv5); v3f(boxv1); glEnd();
glBegin(GL_LINE_LOOP); glColor4ub(CUBECOLOR); v3f(boxv2); v3f(boxv6); v3f(boxv7); v3f(boxv3); glEnd();
glBegin(GL_LINE_LOOP); glColor4ub(CUBECOLOR); v3f(boxv0); v3f(boxv3); v3f(boxv7); v3f(boxv4); glEnd();
glBegin(GL_LINE_LOOP); glColor4ub(CUBECOLOR); v3f(boxv1); v3f(boxv5); v3f(boxv6); v3f(boxv2); glEnd();
#define ALPHA 128
glBegin(GL_QUADS); glColor4ub( 0, 0, 255, ALPHA); v3f(boxv0); v3f(boxv1); v3f(boxv2); v3f(boxv3); glEnd();
glBegin(GL_QUADS); glColor4ub(255, 255, 0, ALPHA); v3f(boxv0); v3f(boxv4); v3f(boxv5); v3f(boxv1); glEnd();
glBegin(GL_QUADS); glColor4ub( 0, 255, 255, ALPHA); v3f(boxv2); v3f(boxv6); v3f(boxv7); v3f(boxv3); glEnd();
glBegin(GL_QUADS); glColor4ub(255, 0, 0, ALPHA); v3f(boxv4); v3f(boxv5); v3f(boxv6); v3f(boxv7); glEnd();
glBegin(GL_QUADS); glColor4ub(255, 0, 255, ALPHA); v3f(boxv0); v3f(boxv3); v3f(boxv7); v3f(boxv4); glEnd();
glBegin(GL_QUADS); glColor4ub( 0, 255, 0, ALPHA); v3f(boxv1); v3f(boxv5); v3f(boxv6); v3f(boxv2); glEnd();
};//drawCube
void CubeView::draw() {
if (!valid()) {
glLoadIdentity();
glViewport(0,0,w(),h());
glOrtho(-10,10,-10,10,-20000,10000);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(xshift, yshift, 0);
glRotatef(hAng,0,1,0); glRotatef(vAng,1,0,0);
glScalef(float(size),float(size),float(size));
drawCube();
glPopMatrix();
};
//
// End of "$Id: CubeView.cxx,v 1.1 1999/02/22 21:33:54 mike Exp $".
//
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