Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- /*! \file shapes.c
- \ingroup demos
- This program is a test harness for the various shapes
- in OpenGLUT. It may also be useful to see which
- parameters control what behavior in the OpenGLUT
- objects.
- Spinning wireframe and solid-shaded shapes are
- displayed. Some parameters can be adjusted.
- Keys:
- - <tt>Esc </tt> Quit
- - <tt>q Q </tt> Quit
- - <tt>i I </tt> Show info
- - <tt>= + </tt> Increase \a slices
- - <tt>- _ </tt> Decreate \a slices
- - <tt>, < </tt> Decreate \a stacks
- - <tt>. > </tt> Increase \a stacks
- - <tt>9 ( </tt> Decreate \a depth (Sierpinski Sponge)
- - <tt>0 ) </tt> Increase \a depth (Sierpinski Sponge)
- - <tt>up </tt> Increase "outer radius"
- - <tt>down </tt> Decrease "outer radius"
- - <tt>left </tt> Decrease "inner radius"
- - <tt>right</tt> Increase "inner radius"
- - <tt>PgUp </tt> Next shape-drawing function
- - <tt>PgDn </tt> Prev shape-drawing function
- \author Written by Nigel Stewart November 2003
- \author Portions Copyright (C) 2004, the OpenGLUT project contributors. <br>
- OpenGLUT branched from freeglut in February, 2004.
- \image html openglut_shapes.png OpenGLUT Geometric Shapes Demonstration
- \include demos/shapes/shapes.c
- */
- #include <GL/freeglut.h>
- #include <stdarg.h>
- #include <stdio.h>
- #include <stdlib.h>
- #ifdef _MSC_VER
- /* DUMP MEMORY LEAKS */
- #include <crtdbg.h>
- #endif
- /*
- * This macro is only intended to be used on arrays, of course.
- */
- #define NUMBEROF(x) ((sizeof(x))/(sizeof(x[0])))
- /*
- * These global variables control which object is drawn,
- * and how it is drawn. No object uses all of these
- * variables.
- */
- static int function_index;
- static int slices = 16;
- static int stacks = 16;
- static double irad = .25;
- static double orad = 1.0;
- static int depth = 4;
- static double offset[ 3 ] = { 0, 0, 0 };
- static GLboolean show_info = GL_TRUE;
- /*
- * These one-liners draw particular objects, fetching appropriate
- * information from the above globals. They are just thin wrappers
- * for the OpenGLUT objects.
- */
- static void drawSolidTetrahedron(void) { glutSolidTetrahedron (); }
- static void drawWireTetrahedron(void) { glutWireTetrahedron (); }
- static void drawSolidCube(void) { glutSolidCube(1); }
- static void drawWireCube(void) { glutWireCube(1); }
- static void drawSolidOctahedron(void) { glutSolidOctahedron (); }
- static void drawWireOctahedron(void) { glutWireOctahedron (); }
- static void drawSolidDodecahedron(void) { glutSolidDodecahedron (); }
- static void drawWireDodecahedron(void) { glutWireDodecahedron (); }
- static void drawSolidRhombicDodecahedron(void) { glutSolidRhombicDodecahedron (); }
- static void drawWireRhombicDodecahedron(void) { glutWireRhombicDodecahedron (); }
- static void drawSolidIcosahedron(void) { glutSolidIcosahedron (); }
- static void drawWireIcosahedron(void) { glutWireIcosahedron (); }
- static void drawSolidSierpinskiSponge(void) { glutSolidSierpinskiSponge (depth, offset, 1); }
- static void drawWireSierpinskiSponge(void) { glutWireSierpinskiSponge (depth, offset, 1); }
- static void drawSolidTeapot(void) { glutSolidTeapot(1); }
- static void drawWireTeapot(void) { glutWireTeapot(1); }
- static void drawSolidTorus(void) { glutSolidTorus(irad,orad,slices,stacks); }
- static void drawWireTorus(void) { glutWireTorus (irad,orad,slices,stacks); }
- static void drawSolidSphere(void) { glutSolidSphere(1,slices,stacks); }
- static void drawWireSphere(void) { glutWireSphere(1,slices,stacks); }
- static void drawSolidCone(void) { glutSolidCone(1,1,slices,stacks); }
- static void drawWireCone(void) { glutWireCone(1,1,slices,stacks); }
- static void drawSolidCylinder(void) { glutSolidCylinder(1,1,slices,stacks); }
- static void drawWireCylinder(void) { glutWireCylinder(1,1,slices,stacks); }
- #define RADIUS 1.0f
- static void drawSolidCuboctahedron(void)
- {
- glBegin( GL_TRIANGLES );
- glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d( RADIUS, 0.0, RADIUS );
- glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
- glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
- glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d( RADIUS, 0.0,-RADIUS );
- glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS );
- glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS );
- glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS );
- glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS );
- glEnd();
- glBegin( GL_QUADS );
- glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS );
- glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS );
- glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS );
- glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS );
- glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
- glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
- glEnd();
- }
- static void drawWireCuboctahedron(void)
- {
- glBegin( GL_LINE_LOOP );
- glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS );
- glEnd();
- glBegin( GL_LINE_LOOP );
- glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS );
- glEnd();
- glBegin( GL_LINE_LOOP );
- glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS );
- glEnd();
- glBegin( GL_LINE_LOOP );
- glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS );
- glEnd();
- glBegin( GL_LINE_LOOP );
- glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
- glEnd();
- glBegin( GL_LINE_LOOP );
- glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
- glEnd();
- }
- #undef RADIUS
- /*
- * This structure defines an entry in our function-table.
- */
- typedef struct
- {
- const char * const name;
- void (*solid) (void);
- void (*wire) (void);
- } entry;
- #define ENTRY(e) {#e, drawSolid##e, drawWire##e}
- static const entry table [] =
- {
- ENTRY (Tetrahedron),
- ENTRY (Cube),
- ENTRY (Octahedron),
- ENTRY (Dodecahedron),
- ENTRY (RhombicDodecahedron),
- ENTRY (Icosahedron),
- ENTRY (SierpinskiSponge),
- ENTRY (Teapot),
- ENTRY (Torus),
- ENTRY (Sphere),
- ENTRY (Cone),
- ENTRY (Cylinder),
- ENTRY (Cuboctahedron)
- };
- #undef ENTRY
- /*!
- Does printf()-like work using freeglut/OpenGLUT
- glutBitmapString(). Uses a fixed font. Prints
- at the indicated row/column position.
- Limitation: Cannot address pixels.
- Limitation: Renders in screen coords, not model coords.
- */
- static void shapesPrintf (int row, int col, const char *fmt, ...)
- {
- static char buf[256];
- int viewport[4];
- void *font = GLUT_BITMAP_9_BY_15;
- va_list args;
- va_start(args, fmt);
- #if defined(WIN32) && !defined(__CYGWIN__)
- (void) _vsnprintf (buf, sizeof(buf), fmt, args);
- #else
- (void) vsnprintf (buf, sizeof(buf), fmt, args);
- #endif
- va_end(args);
- glGetIntegerv(GL_VIEWPORT,viewport);
- glPushMatrix();
- glLoadIdentity();
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- glLoadIdentity();
- glOrtho(0,viewport[2],0,viewport[3],-1,1);
- glRasterPos2i
- (
- glutBitmapWidth(font, ' ') * col,
- - glutBitmapHeight(font) * (row+2) + viewport[3]
- );
- glutBitmapString (font, (unsigned char*)buf);
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
- }
- /* GLUT callback Handlers */
- static void
- resize(int width, int height)
- {
- const float ar = (float) width / (float) height;
- glViewport(0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity() ;
- }
- static void display(void)
- {
- const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
- const double a = t*90.0;
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glEnable(GL_LIGHTING);
- glColor3d(1,0,0);
- glPushMatrix();
- glTranslated(0,1.2,-6);
- glRotated(60,1,0,0);
- glRotated(a,0,0,1);
- table [function_index].solid ();
- glPopMatrix();
- glPushMatrix();
- glTranslated(0,-1.2,-6);
- glRotated(60,1,0,0);
- glRotated(a,0,0,1);
- table [function_index].wire ();
- glPopMatrix();
- glDisable(GL_LIGHTING);
- glColor3d(0.1,0.1,0.4);
- if( show_info ) {
- shapesPrintf (1, 3, "Shape PgUp PgDn: %s", table [function_index].name);
- shapesPrintf (2, 3, "Slices +-: %d Stacks <>: %d", slices, stacks);
- shapesPrintf (3, 3, "nSides +-: %d nRings <>: %d", slices, stacks);
- shapesPrintf (4, 3, "Depth (): %d", depth);
- shapesPrintf (5, 3, "Outer radius Up Down : %f", orad);
- shapesPrintf (6, 3, "Inner radius Left Right: %f", irad);
- } else {
- printf ( "Shape %d slides %d stacks %d\n", function_index, slices, stacks ) ;
- }
- glutSwapBuffers();
- }
- static void
- key(unsigned char key, int x, int y)
- {
- switch (key)
- {
- case 27 :
- case 'Q':
- case 'q': glutLeaveMainLoop () ; break;
- case 'I':
- case 'i': show_info = ( show_info == GL_TRUE ) ? GL_FALSE : GL_TRUE; break;
- case '=':
- case '+': slices++; break;
- case '-':
- case '_': if( slices > -1 ) slices--; break;
- case ',':
- case '<': if( stacks > -1 ) stacks--; break;
- case '.':
- case '>': stacks++; break;
- case '9':
- case '(': if( depth > -1 ) depth--; break;
- case '0':
- case ')': ++depth; break;
- default:
- break;
- }
- glutPostRedisplay();
- }
- static void special (int key, int x, int y)
- {
- switch (key)
- {
- case GLUT_KEY_PAGE_UP: ++function_index; break;
- case GLUT_KEY_PAGE_DOWN: --function_index; break;
- case GLUT_KEY_UP: orad *= 2; break;
- case GLUT_KEY_DOWN: orad /= 2; break;
- case GLUT_KEY_RIGHT: irad *= 2; break;
- case GLUT_KEY_LEFT: irad /= 2; break;
- default:
- break;
- }
- if (0 > function_index)
- function_index = NUMBEROF (table) - 1;
- if (NUMBEROF (table) <= ( unsigned )function_index)
- function_index = 0;
- }
- static void
- idle(void)
- {
- glutPostRedisplay();
- }
- const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
- const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
- const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
- const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };
- const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };
- const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };
- const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
- const GLfloat high_shininess[] = { 100.0f };
- /* Program entry point */
- int
- main(int argc, char *argv[])
- {
- glutInitWindowSize(640,480);
- glutInitWindowPosition(40,40);
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_MULTISAMPLE);
- glutCreateWindow("OpenGLUT Shapes");
- glutReshapeFunc(resize);
- glutDisplayFunc(display);
- glutKeyboardFunc(key);
- glutSpecialFunc(special);
- glutIdleFunc(idle);
- glutSetOption ( GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_CONTINUE_EXECUTION ) ;
- glClearColor(1,1,1,1);
- glEnable(GL_CULL_FACE);
- glCullFace(GL_BACK);
- glEnable(GL_DEPTH_TEST);
- glDepthFunc(GL_LESS);
- glEnable(GL_LIGHT0);
- glEnable(GL_NORMALIZE);
- glEnable(GL_COLOR_MATERIAL);
- glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position);
- glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
- glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
- glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);
- glutMainLoop();
- #ifdef _MSC_VER
- /* DUMP MEMORY LEAK INFORMATION */
- _CrtDumpMemoryLeaks () ;
- #endif
- return EXIT_SUCCESS;
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement