f09e17c3c5
- remove obsolete svn '$Id$' tags from all source files - update .fl files and generated files accordingly - replace 'http://www.fltk.org' URL's with 'https://...' - replace bug report URL 'str.php' with 'bugs.php' - remove trailing whitespace - fix other whitespace errors flagged by Git - add and/or fix missing or wrong standard headers - convert tabs to spaces in all source files The only relevant code changes are in the fluid/ folder where some .fl files and other source files were used to generate the '$Id' headers and footers.
160 lines
3.8 KiB
C++
160 lines
3.8 KiB
C++
//
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// CubeView class implementation for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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#include "CubeView.h"
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#include <math.h>
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#if HAVE_GL
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CubeView::CubeView(int x,int y,int w,int h,const char *l)
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: Fl_Gl_Window(x,y,w,h,l)
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#else
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CubeView::CubeView(int x,int y,int w,int h,const char *l)
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: Fl_Box(x,y,w,h,l)
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#endif /* HAVE_GL */
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{
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Fl::use_high_res_GL(1);
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vAng = 0.0;
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hAng=0.0;
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size=10.0;
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xshift=0.0;
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yshift=0.0;
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/* The cube definition. These are the vertices of a unit cube
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* centered on the origin.*/
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boxv0[0] = -0.5; boxv0[1] = -0.5; boxv0[2] = -0.5;
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boxv1[0] = 0.5; boxv1[1] = -0.5; boxv1[2] = -0.5;
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boxv2[0] = 0.5; boxv2[1] = 0.5; boxv2[2] = -0.5;
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boxv3[0] = -0.5; boxv3[1] = 0.5; boxv3[2] = -0.5;
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boxv4[0] = -0.5; boxv4[1] = -0.5; boxv4[2] = 0.5;
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boxv5[0] = 0.5; boxv5[1] = -0.5; boxv5[2] = 0.5;
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boxv6[0] = 0.5; boxv6[1] = 0.5; boxv6[2] = 0.5;
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boxv7[0] = -0.5; boxv7[1] = 0.5; boxv7[2] = 0.5;
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#if !HAVE_GL
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label("OpenGL is required for this demo to operate.");
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align(FL_ALIGN_WRAP | FL_ALIGN_INSIDE);
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#endif /* !HAVE_GL */
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}
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#if HAVE_GL
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void CubeView::drawCube() {
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/* Draw a colored cube */
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#define ALPHA 0.5
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glShadeModel(GL_FLAT);
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glBegin(GL_QUADS);
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glColor4f(0.0, 0.0, 1.0, ALPHA);
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glVertex3fv(boxv0);
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glVertex3fv(boxv1);
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glVertex3fv(boxv2);
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glVertex3fv(boxv3);
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glColor4f(1.0, 1.0, 0.0, ALPHA);
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glVertex3fv(boxv0);
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glVertex3fv(boxv4);
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glVertex3fv(boxv5);
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glVertex3fv(boxv1);
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glColor4f(0.0, 1.0, 1.0, ALPHA);
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glVertex3fv(boxv2);
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glVertex3fv(boxv6);
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glVertex3fv(boxv7);
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glVertex3fv(boxv3);
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glColor4f(1.0, 0.0, 0.0, ALPHA);
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glVertex3fv(boxv4);
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glVertex3fv(boxv5);
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glVertex3fv(boxv6);
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glVertex3fv(boxv7);
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glColor4f(1.0, 0.0, 1.0, ALPHA);
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glVertex3fv(boxv0);
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glVertex3fv(boxv3);
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glVertex3fv(boxv7);
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glVertex3fv(boxv4);
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glColor4f(0.0, 1.0, 0.0, ALPHA);
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glVertex3fv(boxv1);
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glVertex3fv(boxv5);
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glVertex3fv(boxv6);
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glVertex3fv(boxv2);
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glEnd();
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glColor3f(1.0, 1.0, 1.0);
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glBegin(GL_LINES);
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glVertex3fv(boxv0);
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glVertex3fv(boxv1);
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glVertex3fv(boxv1);
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glVertex3fv(boxv2);
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glVertex3fv(boxv2);
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glVertex3fv(boxv3);
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glVertex3fv(boxv3);
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glVertex3fv(boxv0);
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glVertex3fv(boxv4);
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glVertex3fv(boxv5);
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glVertex3fv(boxv5);
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glVertex3fv(boxv6);
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glVertex3fv(boxv6);
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glVertex3fv(boxv7);
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glVertex3fv(boxv7);
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glVertex3fv(boxv4);
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glVertex3fv(boxv0);
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glVertex3fv(boxv4);
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glVertex3fv(boxv1);
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glVertex3fv(boxv5);
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glVertex3fv(boxv2);
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glVertex3fv(boxv6);
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glVertex3fv(boxv3);
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glVertex3fv(boxv7);
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glEnd();
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}//drawCube
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void CubeView::draw() {
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if (!valid()) {
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glLoadIdentity();
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glViewport(0,0,pixel_w(),pixel_h());
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glOrtho(-10,10,-10,10,-20050,10000);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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}
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glPushMatrix();
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glTranslatef((GLfloat) xshift, (GLfloat) yshift, 0);
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glRotatef((GLfloat) hAng,0,1,0); glRotatef((GLfloat) vAng,1,0,0);
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glScalef(float(size),float(size),float(size));
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drawCube();
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glPopMatrix();
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}
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#endif /* HAVE_GL */
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