FMudanyali/FreeGLUT-Vita
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Replacing the original \"freeglut\" \"shapes\" demo with the much snazzier OpenGLUT \"shapes\" demo. Many thanks to the OpenGLUT community for writing it. The copyright notice stays in the program.

Browse Source 
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@598 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
fayjf 2005-05-04 21:02:22 +00:00
parent 29339a69ee
commit c8f9a63d03
1 changed files with 276 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

335
freeglut/freeglut/progs/demos/shapes/shapes.c
View File

@ -1,23 +1,204 @@
/*
* FreeGLUT Shapes Demo
*
* Written by Nigel Stewart November 2003
*
* This program is test harness for the sphere, cone
* and torus shapes in FreeGLUT.
*
* Spinning wireframe and smooth shaded shapes are
* displayed until the ESC or q key is pressed. The
* number of geometry stacks and slices can be adjusted
* using the + and - keys.
*/
/*! \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 &nbsp;</tt> Quit
- <tt>q Q &nbsp;</tt> Quit
- <tt>= + &nbsp;</tt> Increase \a slices
- <tt>- _ &nbsp;</tt> Decreate \a slices
- <tt>, < &nbsp;</tt> Decreate \a stacks
- <tt>. > &nbsp;</tt> Increase \a stacks
- <tt>9 ( &nbsp;</tt> Decreate \a depth (Sierpinski Sponge)
- <tt>0 ) &nbsp;</tt> Increase \a depth (Sierpinski Sponge)
- <tt>up&nbsp; &nbsp;</tt> Increase "outer radius"
- <tt>down&nbsp;</tt> Decrease "outer radius"
- <tt>left&nbsp;</tt> Decrease "inner radius"
- <tt>right</tt> Increase "inner radius"
- <tt>PgUp&nbsp;</tt> Next shape-drawing function
- <tt>PgDn&nbsp;</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 WIN32
#include <crtdbg.h> // DUMP MEMORY LEAKS
#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 };
/*
* 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); }
static void drawSolidCuboctahedron(void)
{
#define RADIUS 1.0f
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();
#undef RADIUS
}
static void drawWireCuboctahedron(void)
{
}
/*
* 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.
\note Uses a fixed, 256-byte array for holding strings.
The best way around this would be to use vasprintf(),
but that is not available on WIN32, I believe.
Another alternative would be to write our own formatter
from scratch and emit the characters one at a time to
the GLUT bitmap single-character drawing routine.
We could also use vsnprintf(), but I'm not sure if
that is standard...
*/
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);
(void) vsprintf (buf, fmt, args);
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, buf);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
/* GLUT callback Handlers */
@ -27,6 +208,7 @@ 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);
@ -35,57 +217,43 @@ resize(int width, int height)
glLoadIdentity() ;
}
static void
display(void)
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);
glColor3d(1,0,0);
glPushMatrix();
glTranslated(-2.4,1.2,-6);
glRotated(60,1,0,0);
glRotated(a,0,0,1);
glutSolidSphere(1,slices,stacks);
glPopMatrix();
glEnable(GL_LIGHTING);
printf ( "Shape %d slides %d stacks %d\n", function_index, slices, stacks ) ;
glColor3d(1,0,0);
glPushMatrix();
glTranslated(0,1.2,-6);
glRotated(60,1,0,0);
glRotated(a,0,0,1);
glutSolidCone(1,1,slices,stacks);
glPopMatrix();
glPushMatrix();
glTranslated(2.4,1.2,-6);
glRotated(60,1,0,0);
glRotated(a,0,0,1);
glutSolidTorus(0.2,0.8,slices,stacks);
glPopMatrix();
glPushMatrix();
glTranslated(-2.4,-1.2,-6);
glRotated(60,1,0,0);
glRotated(a,0,0,1);
glutWireSphere(1,slices,stacks);
table [function_index].solid ();
glPopMatrix();
glPushMatrix();
glTranslated(0,-1.2,-6);
glRotated(60,1,0,0);
glRotated(a,0,0,1);
glutWireCone(1,1,slices,stacks);
table [function_index].wire ();
glPopMatrix();
glPushMatrix();
glTranslated(2.4,-1.2,-6);
glRotated(60,1,0,0);
glRotated(a,0,0,1);
glutWireTorus(0.2,0.8,slices,stacks);
glPopMatrix();
glDisable(GL_LIGHTING);
glColor3d(0.1,0.1,0.4);
/* 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);
*/
glutSwapBuffers();
}
@ -95,36 +263,59 @@ key(unsigned char key, int x, int y)
{
switch (key)
{
case 'n': glDisable ( GL_CULL_FACE ) ;
break ;
case 'f': glEnable ( GL_CULL_FACE ) ;
glCullFace ( GL_FRONT ) ;
break ;
case 'b': glEnable ( GL_CULL_FACE ) ;
glCullFace ( GL_BACK ) ;
break ;
case 27 :
case 'q':
exit(0);
break;
case 'Q':
case 'q': glutLeaveMainLoop () ; break;
case '+':
slices++;
stacks++;
break;
case '=':
case '+': slices++; break;
case '-':
if (slices>3 && stacks>3)
{
slices--;
stacks--;
}
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)
{
@ -146,28 +337,31 @@ const GLfloat high_shininess[] = { 100.0f };
int
main(int argc, char *argv[])
{
glutInit(&argc, argv);
glutInitWindowSize(640,480);
glutInitWindowPosition (40,40);
glutInitWindowPosition(40,40);
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("FreeGLUT Shapes");
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);
glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
@ -181,6 +375,9 @@ main(int argc, char *argv[])
glutMainLoop();
#ifdef WIN32
_CrtDumpMemoryLeaks () ; // DUMP MEMORY LEAK INFORMATION
#endif
return EXIT_SUCCESS;
}