Added OpenGL classical gears.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33430 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Philippe Houdoin
parent
7d9b05f10d
commit
a02fe27649
@ -1,3 +1,4 @@
|
||||
SubDir HAIKU_TOP src tests kits opengl ;
|
||||
|
||||
SubInclude HAIKU_TOP src tests kits opengl direct_mode ;
|
||||
SubInclude HAIKU_TOP src tests kits opengl demos ;
|
||||
|
||||
3
src/tests/kits/opengl/demos/Jamfile
Normal file
3
src/tests/kits/opengl/demos/Jamfile
Normal file
@ -0,0 +1,3 @@
|
||||
SubDir HAIKU_TOP src tests kits opengl demos ;
|
||||
|
||||
SubInclude HAIKU_TOP src tests kits opengl demos gears ;
|
||||
15
src/tests/kits/opengl/demos/gears/Jamfile
Normal file
15
src/tests/kits/opengl/demos/gears/Jamfile
Normal file
@ -0,0 +1,15 @@
|
||||
SubDir HAIKU_TOP src tests kits opengl demos gears ;
|
||||
|
||||
SetSubDirSupportedPlatformsBeOSCompatible ;
|
||||
|
||||
if $(TARGET_PLATFORM) != haiku {
|
||||
# Needed for <GL/glut.h>, not present in R5.
|
||||
# Unfortunately we also get the other headers there,
|
||||
# that we don't really want.
|
||||
UsePublicHeaders opengl ;
|
||||
}
|
||||
|
||||
SimpleTest GLGears :
|
||||
gears.c
|
||||
: be libGL.so $(TARGET_LIBSUPC++)
|
||||
;
|
||||
407
src/tests/kits/opengl/demos/gears/gears.c
Normal file
407
src/tests/kits/opengl/demos/gears/gears.c
Normal file
@ -0,0 +1,407 @@
|
||||
/*
|
||||
* 3-D gear wheels. This program is in the public domain.
|
||||
*
|
||||
* Command line options:
|
||||
* -info print GL implementation information
|
||||
* -exit automatically exit after 30 seconds
|
||||
*
|
||||
*
|
||||
* Brian Paul
|
||||
*/
|
||||
|
||||
/* Conversion to GLUT by Mark J. Kilgard */
|
||||
|
||||
|
||||
|
||||
#include <math.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <GL/glut.h>
|
||||
|
||||
#ifndef M_PI
|
||||
#define M_PI 3.14159265
|
||||
#endif
|
||||
|
||||
static GLint T0 = 0;
|
||||
static GLint Frames = 0;
|
||||
static GLint autoexit = 0;
|
||||
static GLint win = 0;
|
||||
static GLboolean Visible = GL_TRUE;
|
||||
static GLboolean Animate = GL_TRUE;
|
||||
static GLfloat viewDist = 40.0;
|
||||
|
||||
|
||||
/**
|
||||
|
||||
Draw a gear wheel. You'll probably want to call this function when
|
||||
building a display list since we do a lot of trig here.
|
||||
|
||||
Input: inner_radius - radius of hole at center
|
||||
outer_radius - radius at center of teeth
|
||||
width - width of gear
|
||||
teeth - number of teeth
|
||||
tooth_depth - depth of tooth
|
||||
|
||||
**/
|
||||
|
||||
static void
|
||||
gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
|
||||
GLint teeth, GLfloat tooth_depth)
|
||||
{
|
||||
GLint i;
|
||||
GLfloat r0, r1, r2;
|
||||
GLfloat angle, da;
|
||||
GLfloat u, v, len;
|
||||
|
||||
r0 = inner_radius;
|
||||
r1 = outer_radius - tooth_depth / 2.0;
|
||||
r2 = outer_radius + tooth_depth / 2.0;
|
||||
|
||||
da = 2.0 * M_PI / teeth / 4.0;
|
||||
|
||||
glShadeModel(GL_FLAT);
|
||||
|
||||
glNormal3f(0.0, 0.0, 1.0);
|
||||
|
||||
/* draw front face */
|
||||
glBegin(GL_QUAD_STRIP);
|
||||
for (i = 0; i <= teeth; i++) {
|
||||
angle = i * 2.0 * M_PI / teeth;
|
||||
glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
|
||||
glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
|
||||
if (i < teeth) {
|
||||
glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
|
||||
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5);
|
||||
}
|
||||
}
|
||||
glEnd();
|
||||
|
||||
/* draw front sides of teeth */
|
||||
glBegin(GL_QUADS);
|
||||
da = 2.0 * M_PI / teeth / 4.0;
|
||||
for (i = 0; i < teeth; i++) {
|
||||
angle = i * 2.0 * M_PI / teeth;
|
||||
|
||||
glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
|
||||
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
|
||||
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), width * 0.5);
|
||||
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5);
|
||||
}
|
||||
glEnd();
|
||||
|
||||
glNormal3f(0.0, 0.0, -1.0);
|
||||
|
||||
/* draw back face */
|
||||
glBegin(GL_QUAD_STRIP);
|
||||
for (i = 0; i <= teeth; i++) {
|
||||
angle = i * 2.0 * M_PI / teeth;
|
||||
glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
|
||||
glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
|
||||
if (i < teeth) {
|
||||
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5);
|
||||
glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
|
||||
}
|
||||
}
|
||||
glEnd();
|
||||
|
||||
/* draw back sides of teeth */
|
||||
glBegin(GL_QUADS);
|
||||
da = 2.0 * M_PI / teeth / 4.0;
|
||||
for (i = 0; i < teeth; i++) {
|
||||
angle = i * 2.0 * M_PI / teeth;
|
||||
|
||||
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5);
|
||||
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), -width * 0.5);
|
||||
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
|
||||
glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
|
||||
}
|
||||
glEnd();
|
||||
|
||||
/* draw outward faces of teeth */
|
||||
glBegin(GL_QUAD_STRIP);
|
||||
for (i = 0; i < teeth; i++) {
|
||||
angle = i * 2.0 * M_PI / teeth;
|
||||
|
||||
glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
|
||||
glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
|
||||
u = r2 * cos(angle + da) - r1 * cos(angle);
|
||||
v = r2 * sin(angle + da) - r1 * sin(angle);
|
||||
len = sqrt(u * u + v * v);
|
||||
u /= len;
|
||||
v /= len;
|
||||
glNormal3f(v, -u, 0.0);
|
||||
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
|
||||
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
|
||||
glNormal3f(cos(angle), sin(angle), 0.0);
|
||||
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), width * 0.5);
|
||||
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), -width * 0.5);
|
||||
u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);
|
||||
v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);
|
||||
glNormal3f(v, -u, 0.0);
|
||||
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5);
|
||||
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5);
|
||||
glNormal3f(cos(angle), sin(angle), 0.0);
|
||||
}
|
||||
|
||||
glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5);
|
||||
glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5);
|
||||
|
||||
glEnd();
|
||||
|
||||
glShadeModel(GL_SMOOTH);
|
||||
|
||||
/* draw inside radius cylinder */
|
||||
glBegin(GL_QUAD_STRIP);
|
||||
for (i = 0; i <= teeth; i++) {
|
||||
angle = i * 2.0 * M_PI / teeth;
|
||||
glNormal3f(-cos(angle), -sin(angle), 0.0);
|
||||
glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
|
||||
glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
|
||||
}
|
||||
glEnd();
|
||||
|
||||
}
|
||||
|
||||
static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
|
||||
static GLint gear1, gear2, gear3;
|
||||
static GLfloat angle = 0.0;
|
||||
|
||||
static void
|
||||
cleanup(void)
|
||||
{
|
||||
glDeleteLists(gear1, 1);
|
||||
glDeleteLists(gear2, 1);
|
||||
glDeleteLists(gear3, 1);
|
||||
glutDestroyWindow(win);
|
||||
}
|
||||
|
||||
static void
|
||||
draw(void)
|
||||
{
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
|
||||
glPushMatrix();
|
||||
|
||||
glTranslatef(0.0, 0.0, -viewDist);
|
||||
|
||||
glRotatef(view_rotx, 1.0, 0.0, 0.0);
|
||||
glRotatef(view_roty, 0.0, 1.0, 0.0);
|
||||
glRotatef(view_rotz, 0.0, 0.0, 1.0);
|
||||
|
||||
glPushMatrix();
|
||||
glTranslatef(-3.0, -2.0, 0.0);
|
||||
glRotatef(angle, 0.0, 0.0, 1.0);
|
||||
glCallList(gear1);
|
||||
glPopMatrix();
|
||||
|
||||
glPushMatrix();
|
||||
glTranslatef(3.1, -2.0, 0.0);
|
||||
glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
|
||||
glCallList(gear2);
|
||||
glPopMatrix();
|
||||
|
||||
glPushMatrix();
|
||||
glTranslatef(-3.1, 4.2, 0.0);
|
||||
glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
|
||||
glCallList(gear3);
|
||||
glPopMatrix();
|
||||
|
||||
glPopMatrix();
|
||||
|
||||
glutSwapBuffers();
|
||||
|
||||
Frames++;
|
||||
|
||||
{
|
||||
GLint t = glutGet(GLUT_ELAPSED_TIME);
|
||||
if (t - T0 >= 5000) {
|
||||
GLfloat seconds = (t - T0) / 1000.0;
|
||||
GLfloat fps = Frames / seconds;
|
||||
printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
|
||||
fflush(stdout);
|
||||
T0 = t;
|
||||
Frames = 0;
|
||||
if ((t >= 999.0 * autoexit) && (autoexit)) {
|
||||
cleanup();
|
||||
exit(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
idle(void)
|
||||
{
|
||||
static double t0 = -1.;
|
||||
double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
|
||||
if (t0 < 0.0)
|
||||
t0 = t;
|
||||
dt = t - t0;
|
||||
t0 = t;
|
||||
|
||||
angle += 70.0 * dt; /* 70 degrees per second */
|
||||
angle = fmod(angle, 360.0); /* prevents eventual overflow */
|
||||
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
static void
|
||||
update_idle_func(void)
|
||||
{
|
||||
if (Visible && Animate)
|
||||
glutIdleFunc(idle);
|
||||
else
|
||||
glutIdleFunc(NULL);
|
||||
}
|
||||
|
||||
/* change view angle, exit upon ESC */
|
||||
/* ARGSUSED1 */
|
||||
static void
|
||||
key(unsigned char k, int x, int y)
|
||||
{
|
||||
switch (k) {
|
||||
case 'z':
|
||||
view_rotz += 5.0;
|
||||
break;
|
||||
case 'Z':
|
||||
view_rotz -= 5.0;
|
||||
break;
|
||||
case 'd':
|
||||
viewDist += 1.0;
|
||||
break;
|
||||
case 'D':
|
||||
viewDist -= 1.0;
|
||||
break;
|
||||
case 'a':
|
||||
Animate = !Animate;
|
||||
update_idle_func();
|
||||
break;
|
||||
case 27: /* Escape */
|
||||
cleanup();
|
||||
exit(0);
|
||||
break;
|
||||
default:
|
||||
return;
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
/* change view angle */
|
||||
/* ARGSUSED1 */
|
||||
static void
|
||||
special(int k, int x, int y)
|
||||
{
|
||||
switch (k) {
|
||||
case GLUT_KEY_UP:
|
||||
view_rotx += 5.0;
|
||||
break;
|
||||
case GLUT_KEY_DOWN:
|
||||
view_rotx -= 5.0;
|
||||
break;
|
||||
case GLUT_KEY_LEFT:
|
||||
view_roty += 5.0;
|
||||
break;
|
||||
case GLUT_KEY_RIGHT:
|
||||
view_roty -= 5.0;
|
||||
break;
|
||||
default:
|
||||
return;
|
||||
}
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
/* new window size or exposure */
|
||||
static void
|
||||
reshape(int width, int height)
|
||||
{
|
||||
GLfloat h = (GLfloat) height / (GLfloat) width;
|
||||
|
||||
glViewport(0, 0, (GLint) width, (GLint) height);
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glFrustum(-1.0, 1.0, -h, h, 5.0, 200.0);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
}
|
||||
|
||||
static void
|
||||
init(int argc, char *argv[])
|
||||
{
|
||||
static GLfloat pos[4] = {5.0, 5.0, 10.0, 0.0};
|
||||
static GLfloat red[4] = {0.8, 0.1, 0.0, 1.0};
|
||||
static GLfloat green[4] = {0.0, 0.8, 0.2, 1.0};
|
||||
static GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0};
|
||||
GLint i;
|
||||
|
||||
glLightfv(GL_LIGHT0, GL_POSITION, pos);
|
||||
glEnable(GL_CULL_FACE);
|
||||
glEnable(GL_LIGHTING);
|
||||
glEnable(GL_LIGHT0);
|
||||
glEnable(GL_DEPTH_TEST);
|
||||
|
||||
/* make the gears */
|
||||
gear1 = glGenLists(1);
|
||||
glNewList(gear1, GL_COMPILE);
|
||||
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
|
||||
gear(1.0, 4.0, 1.0, 20, 0.7);
|
||||
glEndList();
|
||||
|
||||
gear2 = glGenLists(1);
|
||||
glNewList(gear2, GL_COMPILE);
|
||||
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
|
||||
gear(0.5, 2.0, 2.0, 10, 0.7);
|
||||
glEndList();
|
||||
|
||||
gear3 = glGenLists(1);
|
||||
glNewList(gear3, GL_COMPILE);
|
||||
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
|
||||
gear(1.3, 2.0, 0.5, 10, 0.7);
|
||||
glEndList();
|
||||
|
||||
glEnable(GL_NORMALIZE);
|
||||
|
||||
for ( i=1; i<argc; i++ ) {
|
||||
if (strcmp(argv[i], "-info")==0) {
|
||||
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
|
||||
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
|
||||
printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
|
||||
printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
|
||||
}
|
||||
else if ( strcmp(argv[i], "-exit")==0) {
|
||||
autoexit = 30;
|
||||
printf("Auto Exit after %i seconds.\n", autoexit );
|
||||
}
|
||||
}
|
||||
|
||||
glClearColor(1.0, 1.0, 1.0, 0.0);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
visible(int vis)
|
||||
{
|
||||
Visible = vis;
|
||||
update_idle_func();
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
glutInit(&argc, argv);
|
||||
glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
|
||||
|
||||
glutInitWindowPosition(0, 0);
|
||||
glutInitWindowSize(300, 300);
|
||||
win = glutCreateWindow("Gears");
|
||||
init(argc, argv);
|
||||
|
||||
glutDisplayFunc(draw);
|
||||
glutReshapeFunc(reshape);
|
||||
glutKeyboardFunc(key);
|
||||
glutSpecialFunc(special);
|
||||
glutVisibilityFunc(visible);
|
||||
update_idle_func();
|
||||
|
||||
glutMainLoop();
|
||||
return 0; /* ANSI C requires main to return int. */
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user