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-rw-r--r--tests/automata.c453
1 files changed, 453 insertions, 0 deletions
diff --git a/tests/automata.c b/tests/automata.c
new file mode 100644
index 0000000..35629e0
--- /dev/null
+++ b/tests/automata.c
@@ -0,0 +1,453 @@
+#include <fcntl.h>
+#include <assert.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+#define __USE_GNU //for longer math constants
+#include <math.h>
+
+//#define DEBUG
+
+#define SPLIT_SCREEN 2
+#define CAMERA_SEPARATION 3
+
+#define DEPTH_FACTOR 0.965
+
+#define TRIANGLES 256
+
+#define min(a,b) (((a)<(b))?(a):(b))
+#define max(a,b) (((a)>(b))?(a):(b))
+
+//for one camera, not the whole thing.
+//3 camera
+//#define WIDTH 320
+//#define HEIGHT 240
+//1 camera
+//#define WIDTH 800
+//#define HEIGHT 600
+//2 camera
+#define WIDTH 400
+#define HEIGHT 300
+
+struct object_1 {
+ int type;
+ unsigned char x;
+ unsigned char y;
+ unsigned char z;
+};
+
+struct object_2 {
+ int type;
+ unsigned short x;
+ unsigned short y;
+ unsigned short z;
+};
+
+struct object_4 {
+ int type;
+ unsigned int x;
+ unsigned int y;
+ unsigned int z;
+};
+
+struct camera {
+ int x;
+ int y;
+ int z;
+ int xr;//rotations
+ int yr;
+ int zr;
+} camera;
+
+struct triangle {//use array or linked list?
+ char *id;
+ int x1;
+ int y1;
+ int z1;
+ int x2;
+ int y2;
+ int z2;
+ int x3;
+ int y3;
+ int z3;
+// int dist;//most recent distance calculated from the camera
+};
+
+struct mainwin {
+ int x;
+ int y;
+ int depth;
+ int mousex;
+ int mousey;
+ int rmousex;
+ int rmousey;
+ int buttonpressed;
+ int width;
+ int height;
+ int border_width;
+ int xoff;
+ int math_error;
+ char *user;
+ XColor green;
+ Colormap color_map;
+ Display *dpy;
+ Window w;
+ GC gc;
+ struct triangle *triangle[TRIANGLES];
+} global;
+
+
+float zmagic(int z) {
+ float tmp=pow(DEPTH_FACTOR,(camera.z-z));
+// float tmp=pow(DEPTH_FACTOR,(camera.z-z))/(camera.z-z);
+// float tmp=pow(DEPTH_FACTOR,(camera.z-z)*(camera.z-z)*(camera.z-z));
+ //measure the distance form the camera and error out if it is too far away.
+// if((camera.z - z) >= 0) return(global.math_error=1);
+ //return (float)1 / (float)(camera.z - z);
+ return tmp;
+}
+
+int to2D(int cw,int w,int z,int d) {
+ return (d/2) - (((w-cw) / zmagic(z)) * 16 );
+}
+
+
+float distance(int x1,int y1,int x2,int y2) {
+ return sqrt(((x2-x1)*(x2-x1))+((y2-y1)*(y2-y1)));
+}
+
+long double d2r(int d) {
+ while(d<0) d+=360;
+ return (long double)(d%360) / 180.0l * M_PIl;
+}
+
+int rotateXabout(int x1,int y1,int z1,int x2,int y2,int z2,int degrees) {
+ long double radians=(long double)degrees / (long double)180 * M_PIl;//M_PIl for long double
+ long double radius=distance(x1,z1,x2,z2);
+ if(radius == 0) return x2;
+ return x2 + radius * cosl(acosl(((long double)x2-(long double)x1)/radius)+radians);
+}
+
+int rotateZabout(int x1,int y1,int z1,int x2,int y2,int z2,int degrees) {
+ long double radians=(long double)degrees / (long double)180 * M_PIl;//M_PIl for long double
+ long double radius=distance(x1,z1,x2,z2);
+ if(radius == 0) return z2;
+ return z2 + radius * sinl(asinl(((long double)z2-(long double)z1)/radius)+radians);
+}
+
+
+int to2Dx(int x,int y,int z) {
+ int newx=rotateXabout(x,y,z,camera.x,camera.y,camera.z,camera.yr);
+ int newy=y;//rotateYabout(x,y,z,camera.x,camera.y,camera.z,camera.xr);
+ int newz=rotateZabout(x,y,z,camera.x,camera.y,camera.z,camera.yr);
+ return to2D(camera.x,newx,newz,global.width/SPLIT_SCREEN);
+// return to2D(camera.x,x,z,global.width/SPLIT_SCREEN);
+}
+
+int to2Dy(int x,int y,int z) {
+ int newx=rotateXabout(x,y,z,camera.x,camera.y,camera.z,camera.yr);
+ int newy=y;//rotateYabout(x,y,z,camera.x,camera.y,camera.z,camera.yr);
+ int newz=rotateZabout(x,y,z,camera.x,camera.y,camera.z,camera.yr);
+ return to2D(camera.y,newy,newz,global.height);
+// return to2D(camera.y,y,z,global.height);
+}
+
+void XDrawTriangle(int x1,int y1,int x2,int y2,int x3,int y3) {
+ int x;
+ XDrawLine(global.dpy,global.w,global.gc,x1,y1,x2,y2);
+ XDrawLine(global.dpy,global.w,global.gc,x2,y2,x3,y3);
+ XDrawLine(global.dpy,global.w,global.gc,x3,y3,x1,y1);
+}
+
+void XDrawFilledTriangle(int x1,int y1,int x2,int y2,int x3,int y3,int density) {
+ int x,y;
+ int b;
+ float m;
+
+ XDrawLine(global.dpy,global.w,global.gc,x1,y1,x2,y2);
+ XDrawLine(global.dpy,global.w,global.gc,x2,y2,x3,y3);
+ XDrawLine(global.dpy,global.w,global.gc,x3,y3,x1,y1);
+
+ m=(float)(y1-y2)/(float)(x1-x2);
+ b=y1-(m*x1);
+ for(x=min(x1,x2);x<max(x1,x2);x+=4) {
+ y=m*x+b;
+ XDrawLine(global.dpy,global.w,global.gc,x3,y3,x,y);
+ }
+
+ m=(float)(y2-y3)/(float)(x2-x3);
+ b=y2-(m*x2);
+ for(x=min(x2,x3);x<max(x2,x3);x+=4) {
+ y=m*x+b;
+ XDrawLine(global.dpy,global.w,global.gc,x1,y1,x,y);
+ }
+
+ m=(float)(y3-y1)/(float)(x3-x1);
+ b=y3-(m*x3);
+ for(x=min(x3,x1);x<max(x3,x1);x+=4) {
+ y=m*x+b;
+ XDrawLine(global.dpy,global.w,global.gc,x2,y2,x,y);
+ }
+}
+
+void draw3Dtriangle(int x1,int y1,int z1,int x2,int y2,int z2,int x3,int y3,int z3) {
+ char coords[256];
+ global.math_error=0;
+ int tx1=to2Dx(x1,y1,z1);
+ int ty1=to2Dy(x1,y1,z1);
+ //draw string...
+ int tx2=to2Dx(x2,y2,z2);
+ int ty2=to2Dy(x2,y2,z2);
+ int tx3=to2Dx(x3,y3,z3);
+ int ty3=to2Dy(x3,y3,z3);
+ if(!global.math_error) {
+#ifdef DEBUG
+ snprintf(coords,sizeof(coords)-1,"(%d,%d,%d)",x1,y1,z1);
+ XDrawString(global.dpy,global.w,global.gc,global.xoff+tx1,ty1,coords,strlen(coords));
+ snprintf(coords,sizeof(coords)-1,"(%d,%d,%d)",x2,y2,z2);
+ XDrawString(global.dpy,global.w,global.gc,global.xoff+tx2,ty2,coords,strlen(coords));
+ snprintf(coords,sizeof(coords)-1,"(%d,%d,%d)",x3,y3,z3);
+ XDrawString(global.dpy,global.w,global.gc,global.xoff+tx3,ty3,coords,strlen(coords));
+#endif
+ XDrawTriangle(global.xoff+tx1,ty1,global.xoff+tx2,ty2,global.xoff+tx3,ty3);
+// XDrawFilledTriangle(global.xoff+tx1,ty1,global.xoff+tx2,ty2,global.xoff+tx3,ty3);
+ }
+}
+
+void draw3Dline(int x1,int y1,int z1,int x2,int y2,int z2) {
+ global.math_error=0;
+ int tx1=to2Dx(x1,y1,z1);
+ int ty1=to2Dy(x1,y1,z1);
+ int tx2=to2Dx(x2,y2,z2);
+ int ty2=to2Dy(x2,y2,z2);
+ if(!global.math_error) {
+ XDrawLine(global.dpy,global.w,global.gc,global.xoff+tx1,ty1,global.xoff+tx2,ty2);
+ }
+ global.math_error=0;
+}
+
+
+//is basing this all on triangles best, or should I use polygons?
+//void pushTriangle(x1,y1,z1,1) {
+// for(i=0;global.triangle[i];i++);
+// global.triangle[i]=malloc(sizeof(struct triangle));
+// global.triangle[i]->x1=x1;
+//}
+//void pushSquare() {
+// pushTriangle();
+// pushTriangle();
+//}
+
+void drawCube(int x,int y,int z,int i) {
+//this is just drawing the cube.
+ draw3Dline(x,y,z,x,y,z+i);
+ draw3Dline(x,y,z,x,y+i,z);
+ draw3Dline(x,y,z,x+i,y,z);
+
+ draw3Dline(x+i,y+i,z+0,x+i,y+0,z+0);
+ draw3Dline(x+i,y+i,z+0,x+0,y+i,z+0);
+
+ draw3Dline(x+0,y+i,z+i,x+0,y+i,z+0);
+ draw3Dline(x+0,y+i,z+i,x+0,y+0,z+i);
+
+ draw3Dline(x+i,y+0,z+i,x+i,y+0,z+0);
+ draw3Dline(x+i,y+0,z+i,x+0,y+0,z+i);
+
+ draw3Dline(x+i,y+i,z+i,x+i,y+i,z+0);
+ draw3Dline(x+i,y+i,z+i,x+i,y+0,z+i);
+ draw3Dline(x+i,y+i,z+i,x+0,y+i,z+i);
+}
+
+int applyrule(int a,int b,int c,int rule) {
+ return (rule >> ((!!a<<2) | (!!b<<1) | (!!c)) ) % 2;
+}
+
+char field[HEIGHT+1][WIDTH+1];
+
+void draw_screen(Display *dpy,Window w,GC gc) {
+ int i,j,k;
+ int cn=0;//camera number.
+ char **files;
+ static int offset=0;
+ XFontStruct *font=XLoadQueryFont(dpy,"fixed");
+ XCharStruct overall;
+ int direction,ascent,descent;
+ char coords[256];
+ int x,y,z,x1,y1,x2,y2;
+ XEvent e;
+ XClearWindow(dpy, w);
+
+ j=0;
+ for(i=0;i<HEIGHT;i++) {
+ for(j=0;j<WIDTH;j++) {
+ if(field[i][j]) XDrawPoint(dpy,w,gc,j,i);
+ }
+ }
+ XFlush(dpy);
+}
+
+int load_file(FILE *fp) {
+ struct triangle *to;
+ struct triangle t;
+ char *command;
+ static int i=0;//used to store the last triangle.
+
+ for(;global.triangle[i];i++) ;//hop to the end.
+
+ fcntl(fileno(fp),F_SETFL,O_NONBLOCK);
+
+ for(;;i++) {
+ if(feof(fp)) {
+ //printf("resetting EOF\n");
+ clearerr(fp);
+ }
+ if(fscanf(fp,"%ms %ms %d %d %d %d %d %d %d %d %d",&(t.id),&command,&(t.x1),&(t.y1),&(t.z1),&(t.x2),&(t.y2),&(t.z2),&(t.x3),&(t.y3),&(t.z3)) > 0) {
+ /*if(!strcmp(command,"addsquare")) { } */
+ if(!strcmp(command,"addtriangle")) {
+ global.triangle[i]=malloc(sizeof(struct triangle));
+ to=global.triangle[i];
+ memcpy(to,&t,sizeof(t));
+ }
+ if(!strcmp(command,"move")) {
+ for(i=0;global.triangle[i];i++) {
+ if(!strcmp(global.triangle[i]->id,t.id)) {
+ global.triangle[i]->x1+=t.x1;
+ global.triangle[i]->y1+=t.y1;
+ global.triangle[i]->z1+=t.z1;
+
+ global.triangle[i]->x2+=t.x1;
+ global.triangle[i]->y2+=t.y1;
+ global.triangle[i]->z2+=t.z1;
+
+ global.triangle[i]->x3+=t.x1;
+ global.triangle[i]->y3+=t.y1;
+ global.triangle[i]->z3+=t.z1;
+ }
+ }
+ }
+ global.triangle[i+1]=0;
+ draw_screen(global.dpy,global.w,global.gc);
+ } else {
+ global.triangle[i]=0;
+ break;
+ }
+ }
+}
+
+int export_file(FILE *fp) {
+ struct triangle *to;
+ int i;
+ for(i=0;global.triangle[i];i++) {
+ to=global.triangle[i];
+ printf("%s addtriangle %d %d %d %d %d %d %d %d %d\n",to->id,to->x1,to->y1,to->z1,to->x2,to->y2,to->z2,to->x3,to->y3,to->z3);
+ }
+}
+
+
+int main(int argc,char *argv[]) {
+ char redraw=0;
+ if(argc < 2) {
+ fprintf(stderr,"usage: hackvr yourname < from_others > to_others\n");
+ return 1;
+ } else {
+ global.user=strdup(argv[1]);
+ }
+ setbuf(stdin,0);
+ setbuf(stdout,0);
+ Display *dpy = XOpenDisplay(0);
+ assert(dpy);
+ global.dpy=dpy;
+ unsigned int mask;
+ int i;
+ XEvent e;
+ XSetWindowAttributes attributes;
+ int blackColor = BlackPixel(dpy, DefaultScreen(dpy));
+ int whiteColor = //WhitePixel(dpy, DefaultScreen(dpy));
+ attributes.background_pixel=blackColor;
+ Window w = XCreateWindow(dpy,DefaultRootWindow(dpy),0,0,WIDTH*SPLIT_SCREEN,HEIGHT,1,DefaultDepth(dpy,DefaultScreen(dpy)),InputOutput,DefaultVisual(dpy,DefaultScreen(dpy))\
+ ,CWBackPixel, &attributes);
+ global.w=w;
+ global.triangle[0]=0;//we'll allocate as we need more.
+
+ int j;
+
+ for(i=0;i<HEIGHT;i++) {
+ for(j=0;j<WIDTH;j++) {
+ if(i==0) field[i][j]=rand()%2;
+ else field[i][j]=(j==0 || j==WIDTH)?0:applyrule(field[i-1][j-1],field[i-1][j],field[i-1][j+1],22);
+ }
+ }
+
+ Window root,child;
+ XSelectInput(dpy, w, PointerMotionMask|StructureNotifyMask|ButtonPressMask|ButtonReleaseMask|ResizeRedirectMask|KeyPressMask);
+ XMapWindow(dpy, w);
+ XStoreName(dpy,w,"hackvr");
+ GC gc = XCreateGC(dpy, w, 0, 0);
+ global.gc=gc;
+ global.color_map=DefaultColormap(dpy, DefaultScreen(dpy));
+ XAllocNamedColor(dpy, global.color_map, "green", &global.green, &global.green);
+ XSetForeground(dpy, gc, global.green.pixel);
+// XSetForeground(dpy, gc, whiteColor);
+ for(;;) {
+ load_file(stdin);
+ XNextEvent(dpy, &e);
+ redraw=1;
+ switch(e.type) {
+ case MotionNotify:
+ XQueryPointer(dpy,w,&root,&child,&global.rmousex,&global.rmousey,&global.mousex,&global.mousey,&mask);
+ break;
+ case ButtonPress:
+ global.buttonpressed=e.xbutton.button;
+ break;
+ case ButtonRelease:
+ global.buttonpressed=0;
+ break;
+ case ResizeRequest:
+ XGetGeometry(dpy,w,&root,&global.x,&global.y,&global.width,&global.height,&global.border_width,&global.depth);
+ case KeyPress:
+ switch(XLookupKeysym(&e.xkey,0)) {
+ case XK_Up:
+ //fix these to use calculated values down there.
+ //printf("%s move 0 0 1 0 0 0 0 0 0\n",global.user);
+ camera.z+=5*cosl(d2r(camera.yr));
+ camera.x+=5*sinl(d2r(camera.yr)); break;
+ case XK_Down:
+ //printf("%s move 0 0 -1 0 0 0 0 0 0\n",global.user);
+ camera.z+=5*cosl(d2r(camera.yr+180));
+ camera.x+=5*sinl(d2r(camera.yr+180)); break;
+ case XK_Left:
+ //printf("%s move 1 0 0 0 0 0 0 0 0\n",global.user);
+ camera.z+=5*cosl(d2r(camera.yr+90));
+ camera.x+=5*sinl(d2r(camera.yr+90)); break;
+ case XK_Right:
+ //printf("%s move -1 0 0 0 0 0 0 0 0\n",global.user);
+ camera.z+=5*cosl(d2r(camera.yr+270));
+ camera.x+=5*sinl(d2r(camera.yr+270)); break;
+ case XK_w:
+ //printf("%s move 0 1 0 0 0 0 0 0 0\n",global.user);
+ camera.y+=5; break;
+ case XK_s:
+ //printf("%s move 0 -1 0 0 0 0 0 0 0\n",global.user);
+ camera.y-=5; break;
+ case XK_q:
+ camera.yr+=5; break;
+ case XK_e:
+ camera.yr-=5; break;
+ case XK_Escape: return 0;
+ default:
+ redraw=0;
+ break;
+ }
+ default:
+ redraw=0;
+ break;
+ }
+ //if(redraw)
+ draw_screen(dpy,w,gc);
+ }
+ return 0;
+}
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