diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/progs/demos/bounce.c')
-rw-r--r-- | nx-X11/extras/Mesa_6.4.1/progs/demos/bounce.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/progs/demos/bounce.c b/nx-X11/extras/Mesa_6.4.1/progs/demos/bounce.c deleted file mode 100644 index 2f3fa9fd9..000000000 --- a/nx-X11/extras/Mesa_6.4.1/progs/demos/bounce.c +++ /dev/null @@ -1,228 +0,0 @@ - -/* - * Bouncing ball demo. - * - * This program is in the public domain - * - * Brian Paul - * - * Conversion to GLUT by Mark J. Kilgard - */ - - -#include <math.h> -#include <stdlib.h> -#include <string.h> -#include <GL/glut.h> -#include <sys/time.h> -#include <time.h> - -#define COS(X) cos( (X) * 3.14159/180.0 ) -#define SIN(X) sin( (X) * 3.14159/180.0 ) - -#define RED 1 -#define WHITE 2 -#define CYAN 3 - -GLboolean IndexMode = GL_FALSE; -GLuint Ball; -GLenum Mode; -GLfloat Zrot = 0.0, Zstep = 180.0; -GLfloat Xpos = 0.0, Ypos = 1.0; -GLfloat Xvel = 2.0, Yvel = 0.0; -GLfloat Xmin = -4.0, Xmax = 4.0; -GLfloat Ymin = -3.8, Ymax = 4.0; -GLfloat G = -9.8; - -static GLuint -make_ball(void) -{ - GLuint list; - GLfloat a, b; - GLfloat da = 18.0, db = 18.0; - GLfloat radius = 1.0; - GLuint color; - GLfloat x, y, z; - - list = glGenLists(1); - - glNewList(list, GL_COMPILE); - - color = 0; - for (a = -90.0; a + da <= 90.0; a += da) { - - glBegin(GL_QUAD_STRIP); - for (b = 0.0; b <= 360.0; b += db) { - - if (color) { - glIndexi(RED); - glColor3f(1, 0, 0); - } else { - glIndexi(WHITE); - glColor3f(1, 1, 1); - } - - x = radius * COS(b) * COS(a); - y = radius * SIN(b) * COS(a); - z = radius * SIN(a); - glVertex3f(x, y, z); - - x = radius * COS(b) * COS(a + da); - y = radius * SIN(b) * COS(a + da); - z = radius * SIN(a + da); - glVertex3f(x, y, z); - - color = 1 - color; - } - glEnd(); - - } - - glEndList(); - - return list; -} - -static void -reshape(int width, int height) -{ - float aspect = (float) width / (float) height; - glViewport(0, 0, (GLint) width, (GLint) height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(-6.0 * aspect, 6.0 * aspect, -6.0, 6.0, -6.0, 6.0); - glMatrixMode(GL_MODELVIEW); -} - -/* ARGSUSED1 */ -static void -key(unsigned char k, int x, int y) -{ - switch (k) { - case 27: /* Escape */ - exit(0); - } -} - -static void -draw(void) -{ - GLint i; - - glClear(GL_COLOR_BUFFER_BIT); - - glIndexi(CYAN); - glColor3f(0, 1, 1); - glBegin(GL_LINES); - for (i = -5; i <= 5; i++) { - glVertex2i(i, -5); - glVertex2i(i, 5); - } - for (i = -5; i <= 5; i++) { - glVertex2i(-5, i); - glVertex2i(5, i); - } - for (i = -5; i <= 5; i++) { - glVertex2i(i, -5); - glVertex2f(i * 1.15, -5.9); - } - glVertex2f(-5.3, -5.35); - glVertex2f(5.3, -5.35); - glVertex2f(-5.75, -5.9); - glVertex2f(5.75, -5.9); - glEnd(); - - glPushMatrix(); - glTranslatef(Xpos, Ypos, 0.0); - glScalef(2.0, 2.0, 2.0); - glRotatef(8.0, 0.0, 0.0, 1.0); - glRotatef(90.0, 1.0, 0.0, 0.0); - glRotatef(Zrot, 0.0, 0.0, 1.0); - - glCallList(Ball); - - glPopMatrix(); - - glFlush(); - glutSwapBuffers(); -} - -static void -idle(void) -{ - static float vel0 = -100.0; - static double t0 = -1.; - double t, dt; - t = glutGet(GLUT_ELAPSED_TIME) / 1000.; - if (t0 < 0.) - t0 = t; - dt = t - t0; - t0 = t; - - Zrot += Zstep*dt; - - Xpos += Xvel*dt; - if (Xpos >= Xmax) { - Xpos = Xmax; - Xvel = -Xvel; - Zstep = -Zstep; - } - if (Xpos <= Xmin) { - Xpos = Xmin; - Xvel = -Xvel; - Zstep = -Zstep; - } - Ypos += Yvel*dt; - Yvel += G*dt; - if (Ypos < Ymin) { - Ypos = Ymin; - if (vel0 == -100.0) - vel0 = fabs(Yvel); - Yvel = vel0; - } - glutPostRedisplay(); -} - -static void -visible(int vis) -{ - if (vis == GLUT_VISIBLE) - glutIdleFunc(idle); - else - glutIdleFunc(NULL); -} - -int main(int argc, char *argv[]) -{ - glutInit(&argc, argv); - glutInitWindowPosition(0, 0); - glutInitWindowSize(600, 450); - - - IndexMode = argc > 1 && strcmp(argv[1], "-ci") == 0; - if (IndexMode) - glutInitDisplayMode(GLUT_INDEX | GLUT_DOUBLE); - else - glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE); - - glutCreateWindow("Bounce"); - Ball = make_ball(); - glCullFace(GL_BACK); - glEnable(GL_CULL_FACE); - glDisable(GL_DITHER); - glShadeModel(GL_FLAT); - - glutDisplayFunc(draw); - glutReshapeFunc(reshape); - glutVisibilityFunc(visible); - glutKeyboardFunc(key); - - if (IndexMode) { - glutSetColor(RED, 1.0, 0.0, 0.0); - glutSetColor(WHITE, 1.0, 1.0, 1.0); - glutSetColor(CYAN, 0.0, 1.0, 1.0); - } - - glutMainLoop(); - return 0; /* ANSI C requires main to return int. */ -} |