diff options
Diffstat (limited to 'progs/ggi/asc-view.c')
| -rw-r--r-- | progs/ggi/asc-view.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/progs/ggi/asc-view.c b/progs/ggi/asc-view.c new file mode 100644 index 0000000000..16f53e5509 --- /dev/null +++ b/progs/ggi/asc-view.c @@ -0,0 +1,353 @@ +/* + 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; +} + |