diff options
Diffstat (limited to 'progs/ggi/gears2.c')
-rw-r--r-- | progs/ggi/gears2.c | 390 |
1 files changed, 0 insertions, 390 deletions
diff --git a/progs/ggi/gears2.c b/progs/ggi/gears2.c deleted file mode 100644 index 9468c03177..0000000000 --- a/progs/ggi/gears2.c +++ /dev/null @@ -1,390 +0,0 @@ -/* gears.c */ - -/* - * 3-D gear wheels. This program is in the public domain. - * - * Brian Paul - * modified by Uwe Maurer (uwe_maurer@t-online.de) - */ - -#include <string.h> -#include <math.h> -#include <stdlib.h> -#include <ggi/ggi.h> -#include <GL/ggimesa.h> -#ifndef M_PI -# define M_PI 3.14159265 -#endif - - -ggi_visual_t vis; -char text[100]; -int db_flag,vis_x, vis_y, vir_x, vir_y, gt; - -/* - * 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 ); - 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 ); - 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 GLuint limit; -static GLuint count = 1; - - -static void draw( void ) -{ - static int n = 0; - glClearColor(0,0,0,0); - glClearIndex(0); - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glPushMatrix(); - 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(); - glFlush(); - glFinish(); - -#if 0 - ggiSetGCForeground(vis,255); - ggiPuts(vis,0,0,"Mesa -> GGI"); - ggiPuts(vis,0,ggiGetInfo(vis)->mode->visible.y," Mesa -> GGI"); - - ggiPuts(vis,0,16,text); - ggiPuts(vis,0,ggiGetInfo(vis)->mode->visible.y+16,text); -#endif - - if(db_flag) - ggiMesaSwapBuffers(); - - count++; - if (count==limit) { - exit(1); - } - ++n; - /* - if (!(n%10)){ - ggi_color rgb = { 10000, 10000, 10000 }; - ggiSetSimpleMode(vis,vis_x+(n/10),vis_y+(n/10),db_flag?2:1, gt); - glViewport(0, 0,vis_x+(n/10),vis_y+(n/10)); - ggiSetGCForeground(vis, ggiMapColor(vis, &rgb)); - ggiDrawBox(vis, 20, 20, 100, 100); - if(db_flag) - ggiSetWriteFrame(vis, 1); - } - */ -} - -static void idle( void ) -{ - angle += 2.0; - draw(); -} - -/* new window size or exposure */ -static void reshape( int width, int height ) -{ - GLfloat h = (GLfloat) height / (GLfloat) width; - - if(db_flag) - glDrawBuffer(GL_BACK); - else - glDrawBuffer(GL_FRONT); - glViewport(0, 0, (GLint)width, (GLint)height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum( -1.0, 1.0, -h, h, 5.0, 60.0 ); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -40.0 ); - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - -} - - -static void init( void ) -{ - static GLfloat pos[4] = {5.0, 5.0, 10.0, 0.0 }; - static GLfloat red[4] = {0.9, 0.9, 0.9, 1.0 }; - static GLfloat green[4] = {0.0, 0.8, 0.9, 1.0 }; - static GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0 }; - - 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 ); - glIndexi(1); - 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 ); - glIndexi(2); - 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 ); - glIndexi(3); - gear( 1.3, 2.0, 0.5, 10, 0.7 ); - glEndList(); - - glEnable( GL_NORMALIZE ); -} - -static void usage(char *s) -{ - printf("%s visible_x visible_y virtual_x virtual_y bpp db_flag\n",s); - printf("example:\n"); - printf("%s 320 200 320 400 8 1\n",s); - exit(1); -} - -int main( int argc, char *argv[] ) -{ - ggi_mesa_context_t ctx; - ggi_mode mode; - int bpp; - - limit=0; - - if (argc<7) usage(argv[0]); - - vis_x=atoi(argv[1]); - vis_y=atoi(argv[2]); - vir_x=atoi(argv[3]); - vir_y=atoi(argv[4]); - bpp=atoi(argv[5]); - db_flag=atoi(argv[6]); - - switch(bpp) - { - case 4: gt=GT_4BIT;break; - case 8: gt=GT_8BIT;break; - case 15:gt=GT_15BIT;break; - case 16:gt=GT_16BIT;break; - case 24:gt=GT_24BIT;break; - case 32:gt=GT_32BIT;break; - default: - printf("%i Bits per Pixel ???\n",bpp); - exit(1); - } - sprintf(text,"%sx%s %i colors, RGB mode, %s", - argv[1],argv[2],1<<bpp, - (db_flag) ? "doublebuffer" : "no doublebuffer"); - - if (ggiInit()<0) - { - printf("ggiInit() failed\n"); - exit(1); - } - - if (ggiMesaInit() < 0) - { - printf("ggiMesaInit failed\n"); - exit(1); - } - - vis=ggiOpen(NULL); - if (vis==NULL) - { - printf("ggiOpen() failed\n"); - exit(1); - } - - if (ggiSetSimpleMode(vis,vis_x,vis_y,db_flag ? 2 : 1,gt)<0) - { - printf("%s: can't set graphmode (%i %i %i %i) %i BPP\n", - argv[0],vis_x,vis_y,vir_x,vir_y,bpp); - exit(1); - } - - if (ggiMesaAttach(vis) < 0) - { - printf("ggiMesaAttach failed\n"); - exit(1); - } - if (ggiMesaExtendVisual(vis, GL_FALSE, GL_FALSE, 16, - 0, 0, 0, 0, 0, 1) < 0) - { - printf ("GGIMesaSetVisual() failed\n"); - exit(1); - } - - ctx = ggiMesaCreateContext(vis); - if (ctx==NULL) - { - printf("GGIMesaCreateContext() failed\n"); - exit(1); - } - - ggiMesaMakeCurrent(ctx, vis); - ggiGetMode(vis,&mode); - - reshape(mode.visible.x,mode.visible.y); - - init(); - - while (!ggiKbhit(vis)) { /*sleep(1);*/ idle(); } - - ggiMesaDestroyContext(ctx); - ggiClose(vis); - - printf("%s\n",text); - - ggiExit(); - return 0; -} |