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-rw-r--r--src/graphics_cs_x11.c423
1 files changed, 423 insertions, 0 deletions
diff --git a/src/graphics_cs_x11.c b/src/graphics_cs_x11.c
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index 0000000..ab80368
--- /dev/null
+++ b/src/graphics_cs_x11.c
@@ -0,0 +1,423 @@
+#define _POSIX_C_SOURCE 200809L //for fileno and strdup
+#define _BSD_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdlib.h>
+//#include <sys/select.h> //code to use select instead of non-blocking is commented out. might decide to use it later.
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+#include <X11/cursorfont.h>
+#include <X11/Xutil.h> //for size hints
+#include <time.h>
+#define __USE_GNU //for longer math constants
+#include <math.h>
+
+#include "config.h"
+#include "common.h"
+#include "graphics_c3.h"//not needed?
+#include "graphics_x11.h"
+#include "graphics_cs.h"
+
+//typedef float real; //think this conflicts?
+
+//TODO: will have to make some pixmaps get resized when the window does.
+//for now set them to be as big as you think you'll ever resize the window to.
+
+//#define SKYRULE 90
+//#define SKYW (WIDTH*5)
+//#define SKYH (HEIGHT/2)
+
+//Pixmap skypixmap;
+//char sky[SKYH][SKYW];
+
+extern struct global global;
+extern struct gra_global gra_global;
+struct x11_global x11_global;
+
+#ifdef GRAPHICAL
+
+/*
+struct plane {
+ c3_t p;
+ real xr;
+ real yr;
+ real zr;
+}
+
+void calculate_shape_color(c3_s_t s,real d) {
+//given: at least 3 points on a plane.
+//needed: angles of the plane.
+//
+ xa=
+ ya=
+ za=
+ for(i=0;i<;i++) {
+ s.p.x
+ }
+}
+*/
+void set_color_based_on_distance(real d) {
+ int i=100-((int)((d+100.0) * 16.0) % 100);
+ XSetForeground(x11_global.dpy,x11_global.backgc,x11_global.colors[i].pixel);
+}
+
+void draw_cs_line(cs_t p1,cs_t p2) {
+ XDrawLine(x11_global.dpy,x11_global.backbuffer,x11_global.backgc,p1.x,p1.y,p2.x,p2.y);
+}
+
+void draw_cs_text(cs_t p,char *text) {
+ char t[256];
+ int direction,ascent,descent;
+ XFontStruct *font=XLoadQueryFont(x11_global.dpy,"fixed");
+ XCharStruct overall;
+ snprintf(t,sizeof(t)-1,"%s",text);
+ XTextExtents(font,text,strlen(text),&direction,&ascent,&descent,&overall);
+ XDrawString(x11_global.dpy,x11_global.backbuffer,x11_global.backgc,p.x,p.y+(descent+ascent),text,strlen(text));
+}
+
+void draw_cs_shape(cs_s_t s) {//this is implemented as draw_cs_line... hrm. it could be moved up to graphics.c? probl no.
+ int h;
+ int i;//all cs shapes can have 1, 2, or 3+ points. guess I gotta do that logic here too.
+ switch(s.len) {
+ case 1:
+ //cicle
+ h=max(s.p[0].y,s.p[1].y)-min(s.p[0].y,s.p[1].y);
+ XDrawArc(x11_global.dpy,x11_global.backbuffer,x11_global.backgc,s.p[0].x-h,s.p[0].y-h,h*2,h*2,0,360*64);
+ break;
+ default:
+ for(i=0;i<s.len+(s.len==1);i++) {//this shape is closed!
+ draw_cs_line(s.p[i],s.p[(i+1)%(s.len+(s.len==1))]);
+ }
+ break;
+ }
+}
+
+void draw_cs_filled_shape(cs_s_t s) {
+ int h;
+ int i;
+ XPoint Xp[s.len+(s.len==1)];
+ for(i=0;i<s.len+(s.len==1);i++) {
+ Xp[i]=(XPoint){s.p[i].x,s.p[i].y};
+ }
+ switch(s.len) {
+ case 1:
+ h=max(s.p[0].y,s.p[1].y)-min(s.p[0].y,s.p[1].y);
+ XFillArc(x11_global.dpy,x11_global.backbuffer,x11_global.backgc,s.p[0].x-h,s.p[0].y-h,h*2,h*2,0,360*64);
+ break;
+ default:
+ XFillPolygon(x11_global.dpy,x11_global.backbuffer,x11_global.backgc,Xp,s.len,Convex,CoordModeOrigin);
+ break;
+ }
+}
+
+//should I do clipping in each graphics lib or make graphics.c just have clipping stuff?
+void clear_backbuffer() {
+ XCopyArea(x11_global.dpy,x11_global.cleanbackbuffer,x11_global.backbuffer,x11_global.gc,0,0,gra_global.width,gra_global.height,0,0);
+}
+
+void set_clipping_rectangle(int x,int y,int width,int height) {
+ XRectangle cliprect;
+ cliprect.x=0;
+ cliprect.y=0;
+ cliprect.width=width;
+ cliprect.height=height;
+ XSetClipRectangles(x11_global.dpy,x11_global.backgc,x,y,&cliprect,1,Unsorted);
+}
+
+void red_and_blue_magic() {
+ XGCValues gcval;
+ gcval.function=GXor;
+ XChangeGC(x11_global.dpy,x11_global.backgc,GCFunction,&gcval);
+}
+
+//void draw_sky() {
+// XCopyArea(x11_global.dpy,skypixmap,x11_global.backbuffer,x11_global.backgc,((global.camera.yr.d*5)+SKYW)%SKYW,0,WIDTH,gra_global.height/2,0,0);
+//}
+
+void set_color() {
+ XSetForeground(x11_global.dpy,x11_global.backgc,x11_global.green.pixel);
+}
+
+void set_color_red() {
+ XSetForeground(x11_global.dpy,x11_global.backgc,x11_global.red.pixel);
+}
+
+void set_color_blue() {
+ XSetForeground(x11_global.dpy,x11_global.backgc,x11_global.blue.pixel);
+}
+
+void flipscreen() {
+ XCopyArea(x11_global.dpy,x11_global.backbuffer,x11_global.w,x11_global.gc,0,0,gra_global.width,gra_global.height,0,0);
+}
+
+void set_aspect_ratio() {
+ XSizeHints *hints=XAllocSizeHints();
+ hints->min_aspect.x=AR_W*(gra_global.split_screen / (gra_global.red_and_blue ? gra_global.split_screen : 1));
+ hints->min_aspect.y=AR_H;
+ hints->max_aspect.x=AR_W*(gra_global.split_screen / (gra_global.red_and_blue ? gra_global.split_screen : 1));
+ hints->max_aspect.y=AR_H;
+ hints->flags=PAspect;
+ XSetWMNormalHints(x11_global.dpy,x11_global.w,hints);
+}
+
+void x11_keypress_handler(int sym,int x,int y) {
+ char line[1024];
+ radians tmprad;
+ radians tmprad2;
+ real tmpx;
+// real tmpy; //unused atm
+ real tmpz;
+ switch(sym) {
+ case XK_Return:
+ snprintf(line,sizeof(line)-1,"%s action %s\n",global.user,global.selected_object);
+ selfcommand(line);
+ break;
+ case XK_Up:
+ tmprad=d2r((degrees){global.camera.r.y.d+90});
+ tmprad2=d2r((degrees){global.camera.r.y.d+90});
+ tmpx=WALK_SPEED*sinl(tmprad.r);
+ tmpz=WALK_SPEED*cosl(tmprad2.r);
+ snprintf(line,sizeof(line)-1,"%s move %Lf 0 %Lf 0 0 0 0 0 0\n",global.user,-tmpx,tmpz);
+ selfcommand(line);
+ break;
+ case XK_Down:
+ tmprad=d2r((degrees){global.camera.r.y.d+270});
+ tmprad2=d2r((degrees){global.camera.r.y.d+270});
+ tmpx=WALK_SPEED*sinl(tmprad.r);
+ tmpz=WALK_SPEED*cosl(tmprad2.r);
+ snprintf(line,sizeof(line)-1,"%s move %Lf 0 %Lf 0 0 0 0 0 0\n",global.user,-tmpx,tmpz);
+ selfcommand(line);
+ break;
+ case XK_Left:
+ tmprad=d2r(global.camera.r.y);
+ tmprad2=d2r(global.camera.r.y);
+ tmpx=WALK_SPEED*sinl(tmprad.r);
+ tmpz=WALK_SPEED*cosl(tmprad2.r);
+ snprintf(line,sizeof(line)-1,"%s move %Lf 0 %Lf 0 0 0 0 0 0\n",global.user,-tmpx,tmpz);
+ selfcommand(line);
+ break;
+ case XK_Right:
+ tmprad=d2r((degrees){global.camera.r.y.d+180});
+ tmprad2=d2r((degrees){global.camera.r.y.d+180});
+ tmpx=WALK_SPEED*sinl(tmprad.r);
+ tmpz=WALK_SPEED*cosl(tmprad2.r);
+ snprintf(line,sizeof(line)-1,"%s move %Lf 0 %Lf 0 0 0 0 0 0\n",global.user,-tmpx,tmpz);
+ selfcommand(line);
+ break;
+ case XK_w:
+ snprintf(line,sizeof(line)-1,"%s move 0 1 0 0 0 0 0 0 0\n",global.user);
+ selfcommand(line);
+ break;
+ case XK_s:
+ snprintf(line,sizeof(line)-1,"%s move 0 -1 0 0 0 0 0 0 0\n",global.user);
+ selfcommand(line);
+ break;
+ case XK_r:
+ snprintf(line,sizeof(line)-1,"%s rotate %d 0 0\n",global.user,global.camera.r.x.d+5);
+ selfcommand(line);
+ break;
+ case XK_y:
+ snprintf(line,sizeof(line)-1,"%s rotate %d 0 0\n",global.user,global.camera.r.x.d-5);
+ selfcommand(line);
+ break;
+ case XK_q:
+ snprintf(line,sizeof(line)-1,"%s rotate 0 %d 0\n",global.user,global.camera.r.y.d+5);
+ selfcommand(line);
+ break;
+ case XK_e:
+ snprintf(line,sizeof(line)-1,"%s rotate 0 %d 0\n",global.user,global.camera.r.y.d-5);
+ selfcommand(line);
+ break;
+ case XK_u:
+ snprintf(line,sizeof(line)-1,"%s rotate 0 0 %d\n",global.user,global.camera.r.z.d+5);
+ selfcommand(line);
+ break;
+ case XK_o:
+ snprintf(line,sizeof(line)-1,"%s rotate 0 0 %d\n",global.user,global.camera.r.z.d-5);
+ selfcommand(line);
+ break;
+ case XK_p:
+ gra_global.split+=.1;
+ break;
+ case XK_l:
+ gra_global.split-=.1;
+ break;
+ case XK_z: global.zoom+=1; break;
+ case XK_x: global.zoom-=1; break;
+ case XK_c: global.mmz*=1.1; break;
+ case XK_v: global.mmz/=1.1; break;
+ case XK_h: global.split+=1; break;
+ case XK_j: global.split-=1; break;
+ case XK_6: gra_global.maxshapes+=10; break;
+ case XK_7: gra_global.maxshapes-=10; break;
+ case XK_d:
+ global.debug ^= 1;
+ break;
+ case XK_f:
+ global.derp ^= 1;
+ break;
+ case XK_m:
+ gra_global.drawminimap += 1;
+ gra_global.drawminimap %= 4;
+ break;
+ case XK_a:
+ gra_global.drawsky ^= 1;
+ break;
+ case XK_3:
+ gra_global.draw3d += 1;
+ gra_global.draw3d %= 4;
+ break;
+ case XK_Escape:
+ exit(0);
+ default:
+ break;
+ }
+}
+#endif
+
+int graphics_sub_init() {
+ int i;
+ char tmp[64];
+ Cursor cursor;
+ XSetWindowAttributes attributes;
+// Window root,child;//why do I have this?
+// XColor toss;
+ printf("# Opening X Display... (%s)\n",getenv("DISPLAY"));
+ if((x11_global.dpy = XOpenDisplay(0)) == NULL) {
+ printf("# failure.\n");
+ exit(1);
+ }
+ else printf("# done.\n");
+ x11_global.color_map=DefaultColormap(x11_global.dpy, DefaultScreen(x11_global.dpy));
+ printf("# generating grays...\n");
+ for(i=0;i<=100;i++) {
+ snprintf(tmp,sizeof(tmp),"gray%d",i);
+ XAllocNamedColor(x11_global.dpy,x11_global.color_map,tmp,&x11_global.colors[i],&x11_global.colors[i]);
+ }
+ printf("# done.\n");
+ assert(x11_global.dpy);
+ x11_global.root_window=0;
+ //global.colors[0]=BlackPixel(x11_global.dpy,DefaultScreen(x11_global.dpy));
+// int whiteColor = //WhitePixel(x11_global.dpy, DefaultScreen(x11_global.dpy));
+ attributes.background_pixel=x11_global.colors[0].pixel;
+ if(x11_global.root_window) {
+ x11_global.w = DefaultRootWindow(x11_global.dpy); //this is still buggy.
+ } else {
+ x11_global.w = XCreateWindow(x11_global.dpy,DefaultRootWindow(x11_global.dpy),0,0,WIDTH*(gra_global.split_screen / (gra_global.red_and_blue ? gra_global.split_screen : 1)),HEIGHT,1,DefaultDepth(x11_global.dpy,DefaultScreen(x11_global.dpy)),InputOutput,DefaultVisual(x11_global.dpy,DefaultScreen(x11_global.dpy))\
+ ,CWBackPixel, &attributes);
+ set_aspect_ratio();
+ XSelectInput(x11_global.dpy, x11_global.w, PointerMotionMask|StructureNotifyMask|ButtonPressMask|ButtonReleaseMask|KeyPressMask|ExposureMask);
+ }
+ XMapWindow(x11_global.dpy,x11_global.w);
+ XStoreName(x11_global.dpy,x11_global.w,"hackvr");
+ global.shape[0]=0;//we'll allocate as we need more.
+ global.camera.id=global.user;
+ global.group_rot[0]=&global.camera;
+ global.group_rot[1]=0;
+ x11_global.gc=XCreateGC(x11_global.dpy,x11_global.w, 0, 0);
+ x11_global.backbuffer=XCreatePixmap(x11_global.dpy,x11_global.w,gra_global.width,gra_global.height,DefaultDepth(x11_global.dpy,DefaultScreen(x11_global.dpy)));
+ x11_global.cleanbackbuffer=XCreatePixmap(x11_global.dpy,x11_global.w,gra_global.width,gra_global.height,DefaultDepth(x11_global.dpy,DefaultScreen(x11_global.dpy)));
+
+//backbuffer is uninitialized
+ x11_global.backgc=XCreateGC(x11_global.dpy,x11_global.backbuffer,0,0);
+
+ cursor=XCreateFontCursor(x11_global.dpy,XC_crosshair);
+ XDefineCursor(x11_global.dpy, x11_global.w, cursor);
+
+ XAllocNamedColor(x11_global.dpy, x11_global.color_map, "green", &x11_global.green, &x11_global.green);
+ XAllocNamedColor(x11_global.dpy, x11_global.color_map, "red", &x11_global.red, &x11_global.red);
+ XAllocNamedColor(x11_global.dpy, x11_global.color_map, "blue", &x11_global.blue, &x11_global.blue);
+ XAllocNamedColor(x11_global.dpy, x11_global.color_map, "red", &x11_global.redblue[0], &x11_global.redblue[0]);
+ XAllocNamedColor(x11_global.dpy, x11_global.color_map, "blue", &x11_global.redblue[1], &x11_global.redblue[1]);
+ XSetForeground(x11_global.dpy, x11_global.gc, x11_global.green.pixel);
+ XSetForeground(x11_global.dpy, x11_global.backgc, x11_global.colors[0].pixel);//black. we're about to draw the blank background using this.
+ XSetBackground(x11_global.dpy, x11_global.gc, x11_global.colors[160].pixel);
+ XSetBackground(x11_global.dpy, x11_global.backgc, x11_global.colors[140].pixel);
+
+ XFillRectangle(x11_global.dpy, x11_global.cleanbackbuffer,x11_global.backgc,0,0,gra_global.width,gra_global.height);
+ XSetForeground(x11_global.dpy, x11_global.backgc,x11_global.green.pixel);
+
+// XSetForeground(x11_global.dpy, gc, whiteColor);
+// this was taking a "long" time.
+/*
+ printf("# generating sky... ");
+ skypixmap=XCreatePixmap(x11_global.dpy,x11_global.w,SKYW,SKYH,DefaultDepth(x11_global.dpy,DefaultScreen(x11_global.dpy)));
+ for(i=0;i<SKYH;i++) {
+ for(j=0;j<SKYW;j++) {
+ if(i==0) sky[i][j]=rand()%2;
+ else {
+ sky[i][j]=(SKYRULE >> ((!!sky[i-1][(j+(SKYW)-1)%(SKYW)]<<2) | (!!sky[i-1][j]<<1) | (!!sky[i-1][j+1%(SKYW)])) & 1);
+ if(sky[i][j]) {
+ XDrawPoint(x11_global.dpy,skypixmap,x11_global.backgc,j,i);
+ }
+ }
+ }
+ }
+ printf("done.\n");
+*/
+
+ return 0;//we're fine
+}
+
+int graphics_event_handler() {
+ int redraw=0;
+ XEvent e;
+ Window child,root;
+ //what sets mask?
+ unsigned int mask;
+ while(XPending(x11_global.dpy)) {//these are taking too long?
+ XNextEvent(x11_global.dpy, &e);
+// printf("# handling event with type: %d\n",e.type);
+ switch(e.type) {
+// case Expose:
+// if(e.xexpose.count == 0) redraw=1;
+// break;
+ case MotionNotify:
+ if(global.debug >= 2) printf("# MotionNotify\n");
+ XQueryPointer(x11_global.dpy,x11_global.w,&root,&child,&gra_global.rmousex,&gra_global.rmousey,&gra_global.mousex,&gra_global.mousey,&mask);
+ redraw=1;
+ break;
+ case ButtonPress:
+ if(global.debug >= 2) printf("# ButtonPress\n");
+ redraw=1;
+ gra_global.buttonpressed=e.xbutton.button;//what's this for? mouse?
+ break;
+ case ButtonRelease:
+ if(global.debug >= 2) printf("# ButtonRelease\n");
+ redraw=1;
+ gra_global.buttonpressed=0;//what's this for???
+ break;
+ case ConfigureNotify:
+ if(global.debug >= 2) printf("# ConfigureNotify\n");
+ redraw=1;
+ XGetGeometry(x11_global.dpy,x11_global.w,&root,&global.x,&global.y,&gra_global.width,&gra_global.height,&gra_global.border_width,&gra_global.depth);
+ if(gra_global.height * AR_W / AR_H != gra_global.width / (gra_global.split_screen / (gra_global.red_and_blue ? gra_global.split_screen : 1))) {
+ // height / AR_H * AR_W = width / (ss / (rab ? ss : 1))
+ if(global.debug >= 2) {
+ printf("# %d != %d for some reason. probably your WM not respecting aspect ratio hints or calculating based on them differently. (would cause an off-by-one or so)\n",gra_global.height * AR_W / AR_H , gra_global.width / (gra_global.split_screen / (gra_global.red_and_blue ? gra_global.split_screen : 1)));
+ }
+ if(gra_global.width / (gra_global.red_and_blue ? 1 : gra_global.split_screen) * AR_H / AR_W < gra_global.height) {
+ gra_global.height=gra_global.width / (gra_global.red_and_blue ? 1 : gra_global.split_screen) * AR_H / AR_W;
+ } else {
+ gra_global.width=gra_global.height * AR_W / AR_H * (gra_global.red_and_blue ? 1 : gra_global.split_screen);
+ }
+ }
+ gra_global.mapxoff=gra_global.width/(gra_global.split_screen / (gra_global.red_and_blue ? gra_global.split_screen : 1))/2;
+ gra_global.mapyoff=gra_global.height/2;
+ break;
+ case KeyPress:
+ if(global.debug >= 2) printf("# KeyPress\n");
+ redraw=1;
+ x11_keypress_handler(XLookupKeysym(&e.xkey,0),gra_global.mousex,gra_global.mousey);
+ break;
+ default:
+// printf("# received unknown event with type: %d\n",e.type);
+ break;
+ }
+ }
+ return redraw;
+}
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