148 lines
3.9 KiB
C++
148 lines
3.9 KiB
C++
/* demo08 rewritten to not use Forms compatability */
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// Modified to have 2 cubes to test multiple OpenGL contexts
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#include <config.h>
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Box.H>
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#include <FL/Fl_Button.H>
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#include <FL/Fl_Radio_Light_Button.H>
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#include <FL/Fl_Slider.H>
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#include <stdlib.h>
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#if !HAVE_GL
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class cube_box : public Fl_Box {
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public:
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double lasttime;
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int wire;
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double size;
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double speed;
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cube_box(int x,int y,int w,int h,const char *l=0)
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:Fl_Box(FL_DOWN_BOX,x,y,w,h,l){
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label("This demo does\nnot work without GL");
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}
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};
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#else
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#include <FL/Fl_Gl_Window.H>
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#include <FL/gl.h>
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class cube_box : public Fl_Gl_Window {
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void draw();
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public:
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double lasttime;
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int wire;
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double size;
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double speed;
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cube_box(int x,int y,int w,int h,const char *l=0)
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: Fl_Gl_Window(x,y,w,h,l) {lasttime = 0.0;}
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};
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/* The cube definition */
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float v0[3] = {0.0, 0.0, 0.0};
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float v1[3] = {1.0, 0.0, 0.0};
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float v2[3] = {1.0, 1.0, 0.0};
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float v3[3] = {0.0, 1.0, 0.0};
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float v4[3] = {0.0, 0.0, 1.0};
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float v5[3] = {1.0, 0.0, 1.0};
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float v6[3] = {1.0, 1.0, 1.0};
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float v7[3] = {0.0, 1.0, 1.0};
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#define v3f(x) glVertex3fv(x)
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void drawcube(int wire) {
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/* Draw a colored cube */
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glBegin(wire ? GL_LINE_LOOP : GL_POLYGON);
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glColor3ub(0,0,255);
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v3f(v0); v3f(v1); v3f(v2); v3f(v3);
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glEnd();
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glBegin(wire ? GL_LINE_LOOP : GL_POLYGON);
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glColor3ub(0,255,255); v3f(v4); v3f(v5); v3f(v6); v3f(v7);
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glEnd();
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glBegin(wire ? GL_LINE_LOOP : GL_POLYGON);
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glColor3ub(255,0,255); v3f(v0); v3f(v1); v3f(v5); v3f(v4);
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glEnd();
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glBegin(wire ? GL_LINE_LOOP : GL_POLYGON);
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glColor3ub(255,255,0); v3f(v2); v3f(v3); v3f(v7); v3f(v6);
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glEnd();
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glBegin(wire ? GL_LINE_LOOP : GL_POLYGON);
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glColor3ub(0,255,0); v3f(v0); v3f(v4); v3f(v7); v3f(v3);
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glEnd();
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glBegin(wire ? GL_LINE_LOOP : GL_POLYGON);
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glColor3ub(255,0,0); v3f(v1); v3f(v2); v3f(v6); v3f(v5);
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glEnd();
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}
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void cube_box::draw() {
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lasttime = lasttime+speed;
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if (!valid()) {
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glLoadIdentity();
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glViewport(0,0,w(),h());
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glEnable(GL_DEPTH_TEST);
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glFrustum(-1,1,-1,1,2,10000);
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glTranslatef(0,0,-10);
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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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glRotatef(float(lasttime*1.6),0,0,1);
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glRotatef(float(lasttime*4.2),1,0,0);
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glRotatef(float(lasttime*2.3),0,1,0);
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glTranslatef(-1.0, 1.2f, -1.5);
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glScalef(float(size),float(size),float(size));
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drawcube(wire);
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glPopMatrix();
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}
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#endif
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Fl_Window *form;
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Fl_Slider *speed, *size;
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Fl_Button *button, *wire, *flat;
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cube_box *cube, *cube2;
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void makeform(const char *name) {
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form = new Fl_Window(510+390,390,name);
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new Fl_Box(FL_DOWN_FRAME,20,20,350,350,"");
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new Fl_Box(FL_DOWN_FRAME,510,20,350,350,"");
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speed = new Fl_Slider(FL_VERT_SLIDER,390,90,40,220,"Speed");
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size = new Fl_Slider(FL_VERT_SLIDER,450,90,40,220,"Size");
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wire = new Fl_Radio_Light_Button(390,20,100,30,"Wire");
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flat = new Fl_Radio_Light_Button(390,50,100,30,"Flat");
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button = new Fl_Button(390,340,100,30,"Exit");
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cube = new cube_box(23,23,344,344, 0);
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cube2 = new cube_box(513,23,344,344, 0);
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Fl_Box *b = new Fl_Box(FL_NO_BOX,cube->x(),size->y(),
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cube->w(),size->h(),0);
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form->resizable(b);
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b->hide();
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form->end();
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}
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main(int argc, char **argv) {
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makeform(argv[0]);
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speed->bounds(4,0);
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speed->value(cube->speed = cube2->speed = 1.0);
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size->bounds(4,0.01);
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size->value(cube->size = cube2->size = 1.0);
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flat->value(1); cube->wire = 0; cube2->wire = 1;
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form->label("cube");
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form->show(argc,argv);
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cube->show();
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cube2->show();
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for (;;) {
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if (form->visible() && speed->value())
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{if (!Fl::check()) break;} // returns immediately
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else
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{if (!Fl::wait()) break;} // waits until something happens
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cube->wire = wire->value();
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cube2->wire = !wire->value();
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cube->size = cube2->size = size->value();
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cube->speed = cube2->speed = speed->value();
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cube->redraw();
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cube2->redraw();
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if (Fl::readqueue() == button) break;
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}
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return 0;
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}
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