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This commit is contained in:
Jon Taylor
1999-08-21 06:27:37 +00:00
parent 95dcb43951
commit 035e96ec3c
12 changed files with 2978 additions and 0 deletions
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353
progs/ggi/asc-view.c Normal file
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/*
test program for the ggi-mesa driver
Copyright (C) 1997,1998 Uwe Maurer - uwe_maurer@t-online.de
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <sys/time.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <GL/gl.h>
#include <GL/ggimesa.h>
#include <ggi/ggi.h>
#include <stdlib.h>
ggi_visual_t vis,vis_mem;
GGIMesaContext ctx;
int screen_x=320,screen_y=200;
ggi_graphtype bpp=GT_16BIT;
//#define ZBUFFER
//#define SMOOTH_NORMALS
void Init()
{
GLfloat h=(GLfloat)3/4;
GLfloat pos[4]={5,5,-20,0};
GLfloat specular[4]={.4,.4,.4,1};
GLfloat diffuse[4]={.3,.3,.3,1};
GLfloat ambient[4]={.2,.2,.2,1};
int err;
if (ggiInit()<0)
{
printf("ggiInit() failed\n");
exit(1);
}
ctx=GGIMesaCreateContext();
if (ctx==NULL)
{
printf("Can't create Context!\n");
exit(1);
}
vis=ggiOpen(NULL);
vis_mem=ggiOpen("display-memory",NULL);
if (vis==NULL || vis_mem==NULL)
{
printf("Can't open ggi_visuals!\n");
exit(1);
}
err=ggiSetGraphMode(vis,screen_x,screen_y,screen_x,screen_y,bpp);
err+=ggiSetGraphMode(vis_mem,screen_x,screen_y,screen_x,screen_y,bpp);
if (err)
{
printf("Can't set %ix%i\n",screen_x,screen_y);
exit(1);
}
if (GGIMesaSetVisual(ctx,vis_mem,GL_TRUE,GL_FALSE)<0)
{
printf("GGIMesaSetVisual() failed!\n");
exit(1);
}
GGIMesaMakeCurrent(ctx);
glViewport(0,0,screen_x,screen_y);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1,1,-h,h,1,50);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0,0,-9);
glShadeModel(GL_FLAT);
glFrontFace(GL_CW);
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glLightfv(GL_LIGHT0,GL_POSITION,pos);
glLightfv(GL_LIGHT0,GL_DIFFUSE,diffuse);
glLightfv(GL_LIGHT0,GL_AMBIENT,ambient);
glLightfv(GL_LIGHT0,GL_SPECULAR,specular);
#ifdef ZBUFFER
glEnable(GL_DEPTH_TEST);
#endif
}
#define MAX_VERTS 1000
#define MAX_TRIS 2000
#define MAX_LEN 1024
#define MAX_F 100000000
void LoadAsc(GLuint *list,char *file)
{
FILE *fp;
GLfloat p[MAX_VERTS][3];
GLfloat normal[MAX_VERTS][3];
float ncount[MAX_VERTS];
int v[MAX_TRIS][3];
char line[MAX_LEN];
char *s;
int i,j;
int verts,faces;
GLuint v0,v1,v2;
GLfloat n[3];
GLfloat len,k;
GLfloat min[3]={MAX_F,MAX_F,MAX_F};
GLfloat max[3]={-MAX_F,-MAX_F,-MAX_F};
char *coord_str[]={"X","Z","Y"};
fp=fopen(file,"r");
if (!fp)
{
printf("Can't open %s!\n",file);
exit(1);
}
while (strncmp(fgets(line,MAX_LEN,fp),"Tri-mesh",8)) ;
s=strstr(line,":")+1;
verts=atoi(s);
s=strstr(s,":")+1;
faces=atoi(s);
if (verts>MAX_VERTS)
{
printf("Too many vertices..\n");
exit(1);
}
while (strncmp(fgets(line,MAX_LEN,fp),"Vertex list",11)) ;
for (i=0;i<verts;i++)
{
while (strncmp(fgets(line,MAX_LEN,fp),"Vertex",6)) ;
for (j=0;j<3;j++)
{
s=strstr(line,coord_str[j])+2;
k=atoi(s);
if (k>max[j]) max[j]=k;
if (k<min[j]) min[j]=k;
p[i][j]=k;
}
}
len=0;
for (i=0;i<3;i++)
{
k=max[i]-min[i];
if (k>len) {len=k;j=i;}
n[i]=(max[i]+min[i])/2;
}
len/=2;
for (i=0;i<verts;i++)
{
for (j=0;j<3;j++)
{
p[i][j]-=n[j];
p[i][j]/=len;
}
}
*list=glGenLists(1);
glNewList(*list,GL_COMPILE);
glBegin(GL_TRIANGLES);
memset(ncount,0,sizeof(ncount));
memset(normal,0,sizeof(normal));
while (strncmp(fgets(line,MAX_LEN,fp),"Face list",9)) ;
for (i=0;i<faces;i++)
{
while (strncmp(fgets(line,MAX_LEN,fp),"Face",4)) ;
s=strstr(line,"A")+2;
v0=v[i][0]=atoi(s);
s=strstr(line,"B")+2;
v1=v[i][1]=atoi(s);
s=strstr(line,"C")+2;
v2=v[i][2]=atoi(s);
n[0]=((p[v1][1]-p[v0][1])*(p[v2][2]-p[v0][2])
- (p[v1][2]-p[v0][2])*(p[v2][1]-p[v0][1]));
n[1]=((p[v1][2]-p[v0][2])*(p[v2][0]-p[v0][0])
- (p[v1][0]-p[v0][0])*(p[v2][2]-p[v0][2]));
n[2]=((p[v1][0]-p[v0][0])*(p[v2][1]-p[v0][1])
- (p[v1][1]-p[v0][1])*(p[v2][0]-p[v0][0]));
len=n[0]*n[0]+n[1]*n[1]+n[2]*n[2];
len=sqrt(len);
n[0]/=len;
n[1]/=len;
n[2]/=len;
#ifdef SMOOTH_NORMALS
for (j=0;j<3;j++){
normal[v[i][j]][0]+=n[0];
normal[v[i][j]][1]+=n[1];
normal[v[i][j]][2]+=n[2];
ncount[v[i][j]]++;
}
#else
glNormal3fv(n);
for (j=0;j<3;j++)
glVertex3fv(p[v[i][j]]);
#endif
}
#ifdef SMOOTH_NORMALS
for (i=0;i<verts;i++) {
for (j=0;j<3;j++) {
normal[i][j]/=ncount[i];
}
}
for (i=0;i<faces;i++) {
for (j=0;j<3;j++) {
glNormal3f(normal[v[i][j]][0],
normal[v[i][j]][1],
normal[v[i][j]][2]);
glVertex3fv(p[v[i][j]]);
}
}
#endif
glEnd();
glEndList();
fclose(fp);
}
double Display(GLuint l,int *maxframes)
{
int x,y;
GLfloat col[]={.25,0,.25,1};
int frames=0;
struct timeval start,stop;
double len;
GLfloat rotate=0;
gettimeofday(&start,NULL);
while(1)
{
glClearColor(0,0,0,0);
glClearIndex(0);
#ifdef ZBUFFER
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
#else
glClear(GL_COLOR_BUFFER_BIT);
#endif
glPushMatrix();
glRotatef(30,1,0,0);
glRotatef(rotate/10,0,0,1);
glTranslatef(-6,-4,0);
for (y=0;y<3;y++)
{
glPushMatrix();
for (x=0;x<5;x++)
{
glPushMatrix();
glRotatef(rotate,y+1,-x-1,0);
col[0]=(GLfloat)(x+1)/4;
col[1]=0;
col[2]=(GLfloat)(y+1)/2;
glMaterialfv(GL_FRONT,GL_AMBIENT,col);
glCallList(l);
glPopMatrix();
glTranslatef(3,0,0);
}
glPopMatrix();
glTranslatef(0,4,0);
}
glPopMatrix();
glFinish();
ggiPutBox(vis,0,0,screen_x,screen_y,ggiDBGetBuffer(vis,0)->read);
rotate+=10;
frames++;
if (frames==(*maxframes)) break;
if (ggiKbhit(vis))
{
*maxframes=frames;
break;
}
}
gettimeofday(&stop,NULL);
len=(double)(stop.tv_sec-start.tv_sec)+
(double)(stop.tv_usec-start.tv_usec)/1e6;
return len;
}
int main(int argc,char **argv)
{
GLuint l;
char *file;
int maxframes=0;
double len;
Init();
file=(argc>1) ? argv[1] : "asc/box.asc";
if (argc>2) maxframes=atoi(argv[2]);
if (argc==1)
{
printf("usage: %s filename.asc\n",argv[0]);
}
LoadAsc(&l,file);
len=Display(l,&maxframes);
printf("\ttime: %.3f sec\n",len);
printf("\tframes: %i\n",maxframes);
printf("\tfps: %.3f \n",(double)maxframes/len);
GGIMesaDestroyContext(ctx);
ggiClose(vis);
ggiClose(vis_mem);
ggiExit();
return 0;
}

2
progs/ggi/blah Normal file
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Terminating on signal 11

7
progs/ggi/blat Normal file
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@@ -0,0 +1,7 @@
#!/bin/sh
function foobar() {
echo "foo!"
}
foobar

66
progs/ggi/box.asc Normal file
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Ambient light color: Red=0.039216 Green=0.039216 Blue=0.039216
Named object: "Object01"
Tri-mesh, Vertices: 8 Faces: 12
Vertex list:
Vertex 0: X: -20 Y: -19.999998 Z: 20.000002
Vertex 1: X: 20 Y: -19.999998 Z: 20.000002
Vertex 2: X: 20 Y: 20.000002 Z: 19.999998
Vertex 3: X: -20 Y: 20.000002 Z: 19.999998
Vertex 4: X: -20 Y: -20.000002 Z: -19.999998
Vertex 5: X: 20 Y: -20.000002 Z: -19.999998
Vertex 6: X: 20 Y: 19.999998 Z: -20.000002
Vertex 7: X: -20 Y: 19.999998 Z: -20.000002
Face list:
Face 0: A:0 B:1 C:2 AB:1 BC:1 CA:0
Smoothing: 1
Face 1: A:0 B:2 C:3 AB:0 BC:1 CA:1
Smoothing: 1
Face 2: A:0 B:4 C:5 AB:1 BC:1 CA:0
Smoothing: 2
Face 3: A:0 B:5 C:1 AB:0 BC:1 CA:1
Smoothing: 2
Face 4: A:1 B:5 C:6 AB:1 BC:1 CA:0
Smoothing: 3
Face 5: A:1 B:6 C:2 AB:0 BC:1 CA:1
Smoothing: 3
Face 6: A:2 B:6 C:7 AB:1 BC:1 CA:0
Smoothing: 4
Face 7: A:2 B:7 C:3 AB:0 BC:1 CA:1
Smoothing: 4
Face 8: A:3 B:7 C:4 AB:1 BC:1 CA:0
Smoothing: 5
Face 9: A:3 B:4 C:0 AB:0 BC:1 CA:1
Smoothing: 5
Face 10: A:4 B:7 C:6 AB:1 BC:1 CA:0
Smoothing: 6
Face 11: A:4 B:6 C:5 AB:0 BC:1 CA:1
Smoothing: 6
Page 1

198
progs/ggi/cone.asc Normal file
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Ambient light color: Red=0.039216 Green=0.039216 Blue=0.039216
Named object: "Object01"
Tri-mesh, Vertices: 34 Faces: 64
Vertex list:
Vertex 0: X: 60.167416 Y: -87.419525 Z: -53.3088
Vertex 1: X: 76.70787 Y: -87.419518 Z: -29.84565
Vertex 2: X: 83.0103 Y: -87.419518 Z: -1.838764
Vertex 3: X: 78.115204 Y: -87.419518 Z: 26.448057
Vertex 4: X: 62.767834 Y: -87.41951 Z: 50.708401
Vertex 5: X: 39.304672 Y: -87.41951 Z: 67.248848
Vertex 6: X: 11.297782 Y: -87.41951 Z: 73.551254
Vertex 7: X: -16.989004 Y: -87.41951 Z: 68.656158
Vertex 8: X: -41.249344 Y: -87.41951 Z: 53.308777
Vertex 9: X: -57.789783 Y: -87.419518 Z: 29.845612
Vertex 10: X: -64.092194 Y: -87.419518 Z: 1.838721
Vertex 11: X: -59.197079 Y: -87.419518 Z: -26.448097
Vertex 12: X: -43.849678 Y: -87.419525 Z: -50.708427
Vertex 13: X: -20.386503 Y: -87.419525 Z: -67.248856
Vertex 14: X: 7.62039 Y: -87.419525 Z: -73.551239
Vertex 15: X: 35.907204 Y: -87.419525 Z: -68.656105
Vertex 16: X: 101.684875 Y: 94.590591 Z: -96.955391
Vertex 17: X: 131.767838 Y: 94.590591 Z: -54.281792
Vertex 18: X: 143.230377 Y: 94.590599 Z: -3.344275
Vertex 19: X: 134.327423 Y: 94.590607 Z: 48.102379
Vertex 20: X: 106.414383 Y: 94.590607 Z: 92.225876
Vertex 21: X: 63.740765 Y: 94.590607 Z: 122.3088
Vertex 22: X: 12.803238 Y: 94.590614 Z: 133.771301
Vertex 23: X: -38.643349 Y: 94.590607 Z: 124.868355
Vertex 24: X: -82.766846 Y: 94.590607 Z: 96.955307
Vertex 25: X: -112.849762 Y: 94.590607 Z: 54.281677
Vertex 26: X: -124.312256 Y: 94.590599 Z: 3.344152
Vertex 27: X: -115.409271 Y: 94.590591 Z: -48.102493
Vertex 28: X: -87.496201 Y: 94.590591 Z: -92.225967
Vertex 29: X: -44.822552 Y: 94.590591 Z: -122.308861
Vertex 30: X: 6.114983 Y: 94.590584 Z: -133.771332
Vertex 31: X: 57.561623 Y: 94.590591 Z: -124.868301
Vertex 32: X: 9.459057 Y: -87.419518 Z: 0.000008
Vertex 33: X: 9.459057 Y: 94.590599 Z: -0.000008
Face list:
Face 0: A:0 B:1 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 1: A:1 B:2 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 2: A:2 B:3 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 3: A:3 B:4 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 4: A:4 B:5 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 5: A:5 B:6 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 6: A:6 B:7 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 7: A:7 B:8 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 8: A:8 B:9 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 9: A:9 B:10 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 10: A:10 B:11 C:32 AB:1 BC:0 CA:0
Page 1
Smoothing: 1
Face 11: A:11 B:12 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 12: A:12 B:13 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 13: A:13 B:14 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 14: A:14 B:15 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 15: A:15 B:0 C:32 AB:1 BC:0 CA:0
Smoothing: 1
Face 16: A:0 B:16 C:17 AB:1 BC:1 CA:0
Smoothing: 2
Face 17: A:0 B:17 C:1 AB:0 BC:1 CA:1
Smoothing: 2
Face 18: A:1 B:17 C:18 AB:1 BC:1 CA:0
Smoothing: 3
Face 19: A:1 B:18 C:2 AB:0 BC:1 CA:1
Smoothing: 3
Face 20: A:2 B:18 C:19 AB:1 BC:1 CA:0
Smoothing: 4
Face 21: A:2 B:19 C:3 AB:0 BC:1 CA:1
Smoothing: 4
Face 22: A:3 B:19 C:20 AB:1 BC:1 CA:0
Smoothing: 5
Face 23: A:3 B:20 C:4 AB:0 BC:1 CA:1
Smoothing: 5
Face 24: A:4 B:20 C:21 AB:1 BC:1 CA:0
Smoothing: 6
Face 25: A:4 B:21 C:5 AB:0 BC:1 CA:1
Smoothing: 6
Face 26: A:5 B:21 C:22 AB:1 BC:1 CA:0
Smoothing: 7
Face 27: A:5 B:22 C:6 AB:0 BC:1 CA:1
Smoothing: 7
Face 28: A:6 B:22 C:23 AB:1 BC:1 CA:0
Smoothing: 8
Face 29: A:6 B:23 C:7 AB:0 BC:1 CA:1
Smoothing: 8
Face 30: A:7 B:23 C:24 AB:1 BC:1 CA:0
Smoothing: 9
Face 31: A:7 B:24 C:8 AB:0 BC:1 CA:1
Smoothing: 9
Face 32: A:8 B:24 C:25 AB:1 BC:1 CA:0
Smoothing: 10
Face 33: A:8 B:25 C:9 AB:0 BC:1 CA:1
Smoothing: 10
Face 34: A:9 B:25 C:26 AB:1 BC:1 CA:0
Smoothing: 11
Face 35: A:9 B:26 C:10 AB:0 BC:1 CA:1
Smoothing: 11
Face 36: A:10 B:26 C:27 AB:1 BC:1 CA:0
Smoothing: 12
Face 37: A:10 B:27 C:11 AB:0 BC:1 CA:1
Smoothing: 12
Face 38: A:11 B:27 C:28 AB:1 BC:1 CA:0
Smoothing: 13
Face 39: A:11 B:28 C:12 AB:0 BC:1 CA:1
Smoothing: 13
Face 40: A:12 B:28 C:29 AB:1 BC:1 CA:0
Smoothing: 14
Page 2
Face 41: A:12 B:29 C:13 AB:0 BC:1 CA:1
Smoothing: 14
Face 42: A:13 B:29 C:30 AB:1 BC:1 CA:0
Smoothing: 15
Face 43: A:13 B:30 C:14 AB:0 BC:1 CA:1
Smoothing: 15
Face 44: A:14 B:30 C:31 AB:1 BC:1 CA:0
Smoothing: 16
Face 45: A:14 B:31 C:15 AB:0 BC:1 CA:1
Smoothing: 16
Face 46: A:15 B:31 C:16 AB:1 BC:1 CA:0
Smoothing: 17
Face 47: A:15 B:16 C:0 AB:0 BC:1 CA:1
Smoothing: 17
Face 48: A:16 B:33 C:17 AB:0 BC:0 CA:1
Smoothing: 18
Face 49: A:17 B:33 C:18 AB:0 BC:0 CA:1
Smoothing: 18
Face 50: A:18 B:33 C:19 AB:0 BC:0 CA:1
Smoothing: 18
Face 51: A:19 B:33 C:20 AB:0 BC:0 CA:1
Smoothing: 18
Face 52: A:20 B:33 C:21 AB:0 BC:0 CA:1
Smoothing: 18
Face 53: A:21 B:33 C:22 AB:0 BC:0 CA:1
Smoothing: 18
Face 54: A:22 B:33 C:23 AB:0 BC:0 CA:1
Smoothing: 18
Face 55: A:23 B:33 C:24 AB:0 BC:0 CA:1
Smoothing: 18
Face 56: A:24 B:33 C:25 AB:0 BC:0 CA:1
Smoothing: 18
Face 57: A:25 B:33 C:26 AB:0 BC:0 CA:1
Smoothing: 18
Face 58: A:26 B:33 C:27 AB:0 BC:0 CA:1
Smoothing: 18
Face 59: A:27 B:33 C:28 AB:0 BC:0 CA:1
Smoothing: 18
Face 60: A:28 B:33 C:29 AB:0 BC:0 CA:1
Smoothing: 18
Face 61: A:29 B:33 C:30 AB:0 BC:0 CA:1
Smoothing: 18
Face 62: A:30 B:33 C:31 AB:0 BC:0 CA:1
Smoothing: 18
Face 63: A:31 B:33 C:16 AB:0 BC:0 CA:1
Smoothing: 18
Page 3

359
progs/ggi/gears.c Normal file
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/* $Id: gears.c,v 1.1 1999/08/21 06:27:37 jtaylor Exp $ */
/*
* 3-D gear wheels. This program is in the public domain.
*
* Brian Paul
*/
/* Conversion to GLUT by Mark J. Kilgard */
/*
* $Log: gears.c,v $
* Revision 1.1 1999/08/21 06:27:37 jtaylor
* *** empty log message ***
*
* Revision 1.5 1999/07/31 21:51:09 jtaylor
* *** empty log message ***
*
* Revision 3.2 1999/06/03 17:07:36 brianp
* an extra quad was being drawn in front and back faces
*
* Revision 3.1 1998/11/03 02:49:10 brianp
* added fps output
*
* Revision 3.0 1998/02/14 18:42:29 brianp
* initial rev
*
*/
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <GL/glut.h>
#ifndef M_PI
#define M_PI 3.14159265
#endif
static GLint T0 = 0;
static GLint Frames = 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
draw(void)
{
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();
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 %g seconds = %g FPS\n", Frames, seconds, fps);
T0 = t;
Frames = 0;
}
}
}
static void
idle(void)
{
angle += 2.0;
glutPostRedisplay();
}
/* 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 27: /* Escape */
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, 60.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0, 0.0, -40.0);
}
static void
init(void)
{
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};
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);
}
void
visible(int vis)
{
if (vis == GLUT_VISIBLE)
glutIdleFunc(idle);
else
glutIdleFunc(NULL);
}
int main(int argc, char *argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
glutInitWindowPosition(0, 0);
glutInitWindowSize(300, 300);
glutCreateWindow("Gears");
init();
glutDisplayFunc(draw);
glutReshapeFunc(reshape);
glutKeyboardFunc(key);
glutSpecialFunc(special);
glutVisibilityFunc(visible);
glutMainLoop();
return 0; /* ANSI C requires main to return int. */
}

359
progs/ggi/gears2.c Normal file
View File

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/* 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];
/*
* 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 )
{
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
GGIMesaSwapBuffers();
count++;
if (count==limit) {
exit(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;
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] = {0.8, 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 };
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[] )
{
GGIMesaContext ctx;
int vis_x,vis_y,vir_x,vir_y,bpp,db_flag,gt;
ggi_mode mode;
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);
}
ctx=GGIMesaCreateContext();
if (ctx==NULL)
{
printf("GGIMesaCreateContext() failed\n");
exit(1);
}
vis=ggiOpen(NULL);
if (vis==NULL)
{
printf("ggiOpen() failed\n");
exit(1);
}
if (ggiSetGraphMode(vis,vis_x,vis_y,vir_x,vir_y,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 (GGIMesaSetVisual(ctx,vis,GL_TRUE,db_flag)<0)
{
printf ("GGIMesaSetVisual() failed\n");
exit(1);
}
GGIMesaMakeCurrent(ctx);
ggiGetMode(vis,&mode);
reshape(mode.visible.x,mode.visible.y);
init();
while (!ggiKbhit(vis)) idle();
GGIMesaDestroyContext(ctx);
ggiClose(vis);
printf("%s\n",text);
ggiExit();
return 0;
}

132
progs/ggi/sphere.asc Normal file
View File

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Ambient light color: Red=0.039216 Green=0.039216 Blue=0.039216
Named object: "Object01"
Tri-mesh, Vertices: 20 Faces: 36
Vertex list:
Vertex 0: X: -210 Y: -432.781738 Z: 180.000031
Vertex 1: X: -610.810303 Y: 144.260559 Z: 103.580154
Vertex 2: X: 56.586655 Y: 144.260544 Z: -128.902023
Vertex 3: X: -75.776352 Y: 144.260605 Z: 565.321838
Vertex 4: X: -462.815979 Y: -347.937683 Z: 131.797302
Vertex 5: X: -616.506042 Y: -126.67173 Z: 102.494209
Vertex 6: X: -41.847229 Y: -347.937683 Z: -14.843644
Vertex 7: X: 60.375015 Y: -126.671753 Z: -133.291641
Vertex 8: X: -125.336807 Y: -347.937653 Z: 423.046448
Vertex 9: X: -73.868958 Y: -126.671692 Z: 570.797424
Vertex 10: X: -448.353271 Y: 237.304672 Z: -92.34951
Vertex 11: X: -192.440964 Y: 237.304672 Z: -181.494431
Vertex 12: X: 145.038193 Y: 237.304672 Z: 109.754745
Vertex 13: X: 94.283768 Y: 237.304688 Z: 375.953766
Vertex 14: X: -326.684937 Y: 237.304733 Z: 522.594727
Vertex 15: X: -531.842834 Y: 237.304718 Z: 345.540588
Vertex 16: X: -331.419525 Y: -225.964966 Z: -168.564438
Vertex 17: X: 152.575485 Y: -225.964935 Z: 249.129868
Vertex 18: X: -451.155914 Y: -225.964905 Z: 459.434662
Vertex 19: X: -298.413483 Y: 423.31897 Z: 163.142761
Face list:
Face 0: A:0 B:4 C:6 AB:1 BC:1 CA:1
Face 1: A:4 B:5 C:16 AB:1 BC:1 CA:1
Face 2: A:4 B:16 C:6 AB:1 BC:1 CA:1
Face 3: A:6 B:16 C:7 AB:1 BC:1 CA:1
Face 4: A:5 B:1 C:10 AB:1 BC:1 CA:1
Face 5: A:5 B:10 C:16 AB:1 BC:1 CA:1
Face 6: A:16 B:10 C:11 AB:1 BC:1 CA:1
Face 7: A:16 B:11 C:7 AB:1 BC:1 CA:1
Face 8: A:7 B:11 C:2 AB:1 BC:1 CA:1
Face 9: A:0 B:6 C:8 AB:1 BC:1 CA:1
Face 10: A:6 B:7 C:17 AB:1 BC:1 CA:1
Face 11: A:6 B:17 C:8 AB:1 BC:1 CA:1
Face 12: A:8 B:17 C:9 AB:1 BC:1 CA:1
Face 13: A:7 B:2 C:12 AB:1 BC:1 CA:1
Face 14: A:7 B:12 C:17 AB:1 BC:1 CA:1
Face 15: A:17 B:12 C:13 AB:1 BC:1 CA:1
Face 16: A:17 B:13 C:9 AB:1 BC:1 CA:1
Face 17: A:9 B:13 C:3 AB:1 BC:1 CA:1
Face 18: A:0 B:8 C:4 AB:1 BC:1 CA:1
Face 19: A:8 B:9 C:18 AB:1 BC:1 CA:1
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Face 21: A:4 B:18 C:5 AB:1 BC:1 CA:1
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Face 25: A:18 B:15 C:5 AB:1 BC:1 CA:1
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Face 27: A:1 B:15 C:10 AB:1 BC:1 CA:1
Face 28: A:15 B:14 C:19 AB:1 BC:1 CA:1
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Face 30: A:10 B:19 C:11 AB:1 BC:1 CA:1
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Face 34: A:19 B:12 C:11 AB:1 BC:1 CA:1
Page 1
Face 35: A:11 B:12 C:2 AB:1 BC:1 CA:1
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glutInit
glutSwapBuffers

840
src/glut/ggi/ggiglut.c Normal file
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/* **************************************************************************
* ggiglut.c
* **************************************************************************
*
* Copyright (C) 1998 Uwe Maurer - uwe_maurer@t-online.de
* Copyright (C) 1999 James Simmons
* Copyright (C) 1999 Jon Taylor
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* **************************************************************************
* To-do:
* - Make everything use the portable ggi_* types
*
*/
#define WIDTH 640
#define HEIGHT 480
#define GRAPHTYPE_RGB GT_16BIT
#define GRAPHTYPE_INDEX GT_8BIT
/*************************************************************************/
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
#include <malloc.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include "GL/ggimesa.h"
#include <ggi/ggi.h>
#include <ggi/gii.h>
char *__glutProgramName = "GGI";
static ggi_visual_t __glut_vis;
static GGIMesaContext __glut_ctx;
static int __glut_width = WIDTH;
static int __glut_height = HEIGHT;
static ggi_graphtype __glut_gt_rgb = GRAPHTYPE_RGB;
static ggi_graphtype __glut_gt_index = GRAPHTYPE_INDEX;
static int __glut_init = GL_FALSE;
static int mousex = WIDTH / 2;
static int mousey = HEIGHT / 2;
static int mouse_moved = GL_FALSE;
static int mouse_down = GL_FALSE;
static int mouse_showcursor = GL_FALSE;
static void (*__glut_reshape)(int, int);
static void (*__glut_display)(void);
static void (*__glut_idle)(void);
static void (*__glut_keyboard)(unsigned char, int, int);
static void (*__glut_special)(int, int, int);
static void (*__glut_mouse)(int, int, int, int);
static void (*__glut_motion)(int, int);
static void (*__glut_passive_motion)(int, int);
static void (*__glut_visibility)(int);
static unsigned int __glut_mode = GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH;
static int __glut_mod_keys = 0;
static int __glut_redisplay = GL_FALSE;
/* Menu */
static int __glut_menubutton = -1;
static int __glut_menuactive = GL_FALSE;
#define MAX_ENTRIES 64
typedef struct menu_s
{
char *label[MAX_ENTRIES];
int value[MAX_ENTRIES];
struct menu_s * submenu[MAX_ENTRIES];
void (*func)(int);
int max_strlen;
int num_entries;
} menu_t;
static menu_t *mainmenu;
static menu_t *curmenu;
static menu_t *activemenu;
int glut_ggi_debug = GL_FALSE;
void glut_ggiPRINT(char *format, ...)
{
va_list args;
va_start(args, format);
fprintf(stderr, "GGIGLUT: ");
vfprintf(stderr, format, args);
va_end(args);
}
void glut_ggiDEBUG(char *format, ...)
{
va_list args;
if (glut_ggi_debug)
{
va_start(args, format);
fprintf(stderr, "GGIGLUT: ");
vfprintf(stderr, format, args);
va_end(args);
}
}
void glutInit(int *argc, char **argv)
{
ggi_graphtype gt;
int i, k;
char *s;
#define REMOVE {for (k=i;k<*argc-1;k++) argv[k]=argv[k+1]; \
(*argc)--; i--; }
if (__glut_init) return;
s = getenv("GGIGLUT_DEBUG");
glut_ggi_debug = (s && atoi(s));
if (argc && argv)
{
for (i = 1; i < *argc; i++)
{
if (strcmp(argv[i], "-mouse") == 0)
{
mouse_showcursor = GL_TRUE;
REMOVE;
}
else
if (strcmp(argv[i], "-bpp") == 0 && (i + 1) < (*argc))
{
switch(atoi(argv[i + 1]))
{
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:
glut_ggiDEBUG("\"%s\" bits per pixel?\n",
argv[i+1]);
exit(1);
}
__glut_gt_rgb = __glut_gt_index = gt;
REMOVE;
REMOVE;
}
else
if (strcmp(argv[i], "-size") == 0 && (i + 2) < (*argc))
{
__glut_width=atoi(argv[i+1]);
__glut_height=atoi(argv[i+2]);
REMOVE;
REMOVE;
REMOVE;
}
}
}
if (ggiInit()<0)
{
ggiPanic("ggiInit() failed!\n");
}
__glut_init=GL_TRUE;
#undef REMOVE
}
void glutInitWindowPosition(int x, int y)
{
}
void glutInitWindowSize(int x, int y)
{
}
void glutFullScreen(void)
{
}
void glutInitDisplayMode(unsigned int mode)
{
__glut_mode = mode;
}
void glutInitDisplayString(const char *string)
{
glut_ggiPRINT("glutInitDisplayString: %s\n", string);
}
int glutCreateWindow(const char *title)
{
ggi_graphtype gt;
ggi_mode mode =
{
1,
{ GGI_AUTO, GGI_AUTO },
{ GGI_AUTO, GGI_AUTO },
{ 0, 0 },
GT_AUTO,
{ GGI_AUTO, GGI_AUTO }
};
int frames;
int rgb;
int err;
if (!__glut_init)
glutInit(NULL, NULL);
glut_ggiPRINT("GGIGLUT: %s\n", title);
rgb = !(__glut_mode & GLUT_INDEX);
frames = (__glut_mode & GLUT_DOUBLE) ? 2 : 1;
gt = (rgb) ? __glut_gt_rgb : __glut_gt_index;
__glut_ctx = GGIMesaCreateContext();
if (__glut_ctx == NULL)
ggiPanic("Can't create mesa-context\n");
__glut_vis = ggiOpen(NULL);
if (__glut_vis == NULL)
{
ggiPanic("ggiOpen() failed!\n");
/* return GL_FALSE; */
}
ggiSetFlags(__glut_vis, GGIFLAG_ASYNC);
ggiCheckMode(__glut_vis, &mode);
err = ggiSetMode(__glut_vis, &mode);
if (err < 0)
{
ggiPanic("Can't set graphic mode!\n");
/* return GL_FALSE; */
}
ggiGetMode(__glut_vis, &mode);
if (GGIMesaSetVisual(__glut_ctx, __glut_vis, rgb, frames > 1) < 0)
{
ggiPanic("GGIMesaSetVisual failed!\n");
}
GGIMesaMakeCurrent(__glut_ctx);
if (__glut_reshape)
__glut_reshape(__glut_width, __glut_height);
return GL_TRUE;
}
void glutReshapeFunc(void (*func)(int, int))
{
__glut_reshape = func;
if (__glut_vis && __glut_reshape)
__glut_reshape(__glut_width, __glut_height);
}
void glutKeyboardFunc(void (*keyboard)(unsigned char key, int x, int y))
{
__glut_keyboard = keyboard;
}
int glutGetModifiers(void)
{
return __glut_mod_keys;
}
void glutEntryFunc(void (*func)(int state))
{
}
void glutVisibilitFunc(void (*func)(int state))
{
}
void glutTimerFunc(unsigned int millis, void (*func)(int value), int value)
{
}
void glutMenuStateFunc(void (*func)(int state))
{
}
int glutGet(GLenum type)
{
switch(type)
{
case GLUT_WINDOW_X:
return 0;
case GLUT_WINDOW_Y:
return 0;
case GLUT_WINDOW_WIDTH:
return __glut_width;
case GLUT_WINDOW_HEIGHT:
return __glut_height;
case GLUT_MENU_NUM_ITEMS:
if (curmenu)
return curmenu->num_entries;
else
return 0;
default:
glut_ggiDEBUG("glutGet: unknown type %i\n", type);
}
return 0;
}
void glutSpecialFunc(void (*special)(int key, int x, int y))
{
__glut_special=special;
}
void glutDisplayFunc(void (*disp)(void))
{
__glut_display=disp;
}
void glutSetColor(int index, GLfloat red, GLfloat green, GLfloat blue)
{
ggi_color c;
GLfloat max;
if (red > 1.0) red = 1.0;
if (red < 0.0) red = 0.0;
if (green > 1.0) green = 1.0;
if (green < 0.0) green = 0.0;
if (blue > 1.0) blue = 1.0;
if (blue < 0.0) blue = 0.0;
max = (float)((1 << GGI_COLOR_PRECISION) - 1);
c.r = (int)(max * red);
c.g = (int)(max * green);
c.b = (int)(max * blue);
ggiSetPalette(__glut_vis, index, 1, &c);
}
void glutPostRedisplay(void)
{
__glut_redisplay = GL_TRUE;
}
void glutPostWindowRedisplay(int win)
{
__glut_redisplay = GL_TRUE;
}
void glutSwapBuffers(void)
{
GGIMesaSwapBuffers();
}
void glutIdleFunc(void (*idle)(void))
{
__glut_idle = idle;
}
static void keyboard(ggi_event *ev)
{
int sym;
int modifer = 0, key = 0;
sym = ev->key.sym;
modifer = ev->key.modifiers;
if (modifer == GII_KM_SHIFT)
__glut_mod_keys |= GLUT_ACTIVE_SHIFT;
if (modifer == GII_KM_CTRL)
__glut_mod_keys |= GLUT_ACTIVE_CTRL;
if (modifer == GII_KM_ALT)
__glut_mod_keys |= GLUT_ACTIVE_ALT;
/* if (__glut_special && key) __glut_special(GII_KTYP(key),0,0); */
if (__glut_keyboard)
// __glut_keyboard(GII_UNICODE(sym), 0, 0);
__glut_keyboard(sym, 0, 0);
}
static void mouseabs(ggi_event *ev)
{
int oldx=mousex;
int oldy=mousey;
mousex=ev->pmove.x;
mousey=ev->pmove.y;
if (mousex<0) mousex=0;
if (mousey<0) mousey=0;
if (mousex>=__glut_width) mousex=__glut_width-1;
if (mousey>=__glut_height) mousey=__glut_height-1;
if (mousex!=oldx || mousey!=oldy) mouse_moved=GL_TRUE;
}
static void mouse(ggi_event *ev)
{
int oldx=mousex;
int oldy=mousey;
mousex+=ev->pmove.x>>1;
mousey+=ev->pmove.y>>1;
if (mousex<0) mousex=0;
if (mousey<0) mousey=0;
if (mousex>=__glut_width) mousex=__glut_width-1;
if (mousey>=__glut_height) mousey=__glut_height-1;
if (mousex!=oldx || mousey!=oldy) mouse_moved=GL_TRUE;
}
/* FIXME: Prototypes belong in headers, not here! [JMT] */
static void showmenu(void);
static int clickmenu(void);
static void updatemouse(void);
static void drawmouse(void);
static void mousemove(void)
{
if (mouse_moved) {
if (__glut_motion && mouse_down) {
__glut_motion(mousex,mousey);
}
if (__glut_passive_motion && (!mouse_down)) {
__glut_passive_motion(mousex,mousey);
}
if (__glut_menuactive) updatemouse();
mouse_moved=GL_FALSE;
}
}
static void button(ggi_event *ev)
{
int i;
int btn[4]={0,GLUT_LEFT_BUTTON,GLUT_RIGHT_BUTTON,GLUT_MIDDLE_BUTTON};
mousemove();
if (ev->pbutton.button <= 3) { /* GGI can have >3 buttons ! */
char state = ev->any.type == evPtrButtonPress ?GLUT_DOWN:GLUT_UP;
if (__glut_menuactive) {
if (state==GLUT_UP && clickmenu()) {
glutPostRedisplay();
__glut_menuactive=GL_FALSE;
}
} else
if (btn[ev->pbutton.button]==__glut_menubutton) {
__glut_menuactive=GL_TRUE;
activemenu=mainmenu;
showmenu();
} else
if (__glut_mouse) {
__glut_mouse(btn[ev->pbutton.button],state,mousex,mousey);
}
if (state==GLUT_DOWN) {
mouse_down|=(1<<(ev->pbutton.button-1));
}
else mouse_down&=~(1<<(ev->pbutton.button-1));
}
}
void glutMainLoop(void)
{
ggi_event ev;
ggi_event_mask evmask = (emKeyPress | emKeyRepeat | emPtrMove | emPtrButton);
ggiSetEventMask(__glut_vis, evmask);
glutPostRedisplay();
if (__glut_visibility)
__glut_visibility(GLUT_VISIBLE);
while (1)
{
if (!__glut_menuactive)
{
if (__glut_idle)
__glut_idle();
if (__glut_redisplay && __glut_display)
{
__glut_redisplay = GL_FALSE;
__glut_display();
}
}
while (1)
{
struct timeval t = {0, 0};
if (ggiEventPoll(__glut_vis, evmask, &t) == 0)
break;
ggiEventRead(__glut_vis, &ev, evmask);
switch (ev.any.type)
{
case evKeyPress:
case evKeyRepeat:
keyboard(&ev);
break;
case evPtrAbsolute:
mouseabs(&ev);
break;
case evPtrRelative:
mouse(&ev);
break;
case evPtrButtonPress:
case evPtrButtonRelease:
button(&ev);
break;
}
}
mousemove();
}
}
static void showmenu()
{
int y,i;
ggi_color col={0xffff,0xffff,0xffff};
ggiSetGCForeground(__glut_vis,ggiMapColor(__glut_vis,&col));
ggiSetOrigin(__glut_vis,0,0);
for (y=i=0;i<activemenu->num_entries;i++,y+=8) {
ggiPuts(__glut_vis,0,y,activemenu->label[i]);
}
drawmouse();
}
static int clickmenu(void)
{
int i;
int w,h;
i=mousey/8;
if (i>=activemenu->num_entries) return GL_TRUE;
if (mousex>=8*strlen(activemenu->label[i])) return GL_TRUE;
if (activemenu->submenu[i]) {
ggi_color col={0,0,0};
ggiSetGCForeground(__glut_vis,ggiMapColor(__glut_vis,&col));
h=activemenu->num_entries*8;
w=activemenu->max_strlen*8;
ggiDrawBox(__glut_vis,0,0,w,h);
activemenu=activemenu->submenu[i];
showmenu();
return GL_FALSE;
}
curmenu=activemenu;
activemenu->func(activemenu->value[i]);
return GL_TRUE;
}
static int oldx=-1;
static int oldy=-1;
static char buffer[16*16*4];
static void updatemouse()
{
ggiPutBox(__glut_vis,oldx,oldy,16,16,buffer);
drawmouse();
}
static void drawmouse()
{
int x,y;
x=mousex-8;
if (x<0) x=0;
y=mousey-8;
if (y<0) y=0;
ggiGetBox(__glut_vis,x,y,16,16,buffer);
ggiDrawLine(__glut_vis,mousex-2,mousey,mousex+2,mousey);
ggiDrawLine(__glut_vis,mousex,mousey-2,mousex,mousey+2);
oldx=x;
oldy=y;
}
int glutCreateMenu(void(*func)(int))
{
menu_t *m;
m=malloc(sizeof(menu_t));
memset(m,0,sizeof(menu_t));
curmenu=m;
curmenu->func=func;
return (int)curmenu;
}
static void addEntry(const char *label,int value,menu_t *submenu)
{
int i=curmenu->num_entries;
/* printf("%i %i %s %p\n",i,value,label,submenu); */
if (i<MAX_ENTRIES) {
curmenu->label[i]=strdup(label);
curmenu->value[i]=value;
curmenu->submenu[i]=submenu;
if (strlen(label)>curmenu->max_strlen)
curmenu->max_strlen=strlen(label);
curmenu->num_entries++;
}
}
void glutAddMenuEntry(const char *label,int value)
{
addEntry(label,value,NULL);
}
void glutAddSubMenu(const char *label,int submenu)
{
char text[100];
if (!curmenu) return;
strncpy(text,label,98);
text[98]=0;
text[strlen(text)+1]=0;
text[strlen(text)]='>';
addEntry(text,0,(menu_t *) submenu);
}
void glutAttachMenu(int button)
{
mainmenu=curmenu;
__glut_menubutton=button;
}
void glutDetachMenu(int button)
{
}
void glutVisibilityFunc(void (*func)(int state))
{
__glut_visibility=func;
}
void glutMouseFunc(void (*mouse)(int, int, int, int))
{
__glut_mouse=mouse;
}
void glutMotionFunc(void (*motion)(int,int))
{
__glut_motion=motion;
}
void glutPassiveMotionFunc(void (*motion)(int,int))
{
__glut_passive_motion=motion;
}
void glutSetWindowTitle(const char *title)
{
}
void glutSetIconTitle(const char *title)
{
}
void glutChangeToMenuEntry(int item,const char *label,int value)
{
if (item>0 && item<=curmenu->num_entries) {
item--;
free(curmenu->label[item]);
curmenu->label[item]=strdup(label);
curmenu->value[item]=value;
curmenu->submenu[item]=NULL;
}
}
void glutChangeToSubMenu(int item,const char *label,int submenu)
{
if (item>0 && item<=curmenu->num_entries) {
item--;
free(curmenu->label[item]);
curmenu->label[item]=strdup(label);
curmenu->value[item]=0;
curmenu->submenu[item]=(menu_t *)submenu;
}
}
void glutDestroyMenu(int menu)
{
menu_t *m=(menu_t *)menu;
int i;
for (i=0;i<m->num_entries;i++) {
free(m->label[i]);
}
free(m);
}
int glutCreateSubWindow(int win,int x,int y,int w,int h)
{
return 0;
}
void glutDestroyWindow(int win)
{
}
int glutGetWindow(void)
{
return 0;
}
void glutSetWindow(int win)
{
}
void glutPositionWindow(int x,int y)
{
}
void glutReshapeWindow(int x,int y)
{
}
void glutPushWindow(void)
{
}
void glutPopWindow(void)
{
}
void glutIconifyWindow(void)
{
}
void glutShowWindow()
{
}
void glutHideWindow()
{
}
void glutSetCursor(int cursor)
{
}
void glutWarpPointer(int x,int y)
{
}
void glutEstablishOverlay(void)
{
}
void glutRemoveOverlay(void)
{
}
void glutUseLayer(GLenum layer)
{
}
int glutLayerGet(GLenum type)
{
return 0;
}
void glutPostOverlayRedisplay(void)
{
}
void glutPostWindowOverlayRedisplay(int w)
{
}
void glutShowOverlay(void)
{
}
void glutHideOverlay(void)
{
}
int glutGetMenu(void)
{
return 0;
}
void glutSetMenu(int menu)
{
}
void glutRemoveMenuItem(int item)
{
}
void glutSpaceBallMotionFunc(void (*func)(int key,int x,int y))
{
}
void glutSpaceBallRotateFunc(void (*func)(int x,int y,int z))
{
}
void glutSpaceBallButtonFunc(void (*func)(int button,int state))
{
}
void glutCopyColormap(int win)
{
}
int glutDeviceGet(GLenum param)
{
return 0;
}